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Piper PA-34-200T Seneca II, Service Manual

The Piper PA-34-200T Seneca II Service Manual is a comprehensive guide for maintenance and repairs of this popular twin-engine aircraft. Download your free copy of the manual from 88.208.23.73:8080 to ensure optimal performance and safety while operating the Seneca II. Get the information you need to keep your aircraft in top condition.

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PIPER SENECA II SERVICE MANUAL

14-72. TROUBLESHOOTING. 

A troubleshooting chart is located at the back of the oxygen system portion of this section. See Table XIV-IX.

14-73. SAFETY PRECAUTIONS. 

WARNING: FAILURE TO CONSULT APPLICABLE VENDOR PUBLICATION(S) WHEN

SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER
AIRCRAFT MAY RENDER THE AIRCRAFT UNAIRWORTHY. (SEE
INTRODUCTION - SUPPLEMENTARY PUBLICATIONS.)

CAUTION: DO NOT ATTEMPT TO TIGHTEN ANY CONNECTIONS WHILE THE SYSTEM IS

CHARGED.

CAUTION: BOTTLES WHICH HAVE BEEN EVACUATED TO 200 PSI FOR A SIGNIFICANT

LENGTH OF TIME, OR THOSE THAT DO NOT PRODUCE AN AUDIBLE HISSING
SOUND WHEN THE VALVE IS CRACKED, SHOULD BE REMOVED AND
HYDROSTATICALLY TESTED. IF EITHER OF THESE CONDITIONS HAS EXISTED
FOR A SIGNIFICANT LENGTH OF TIME IT IS ALSO RECOMMENDED THAT THE
SYSTEM BE PURGED.

CAUTION: MAKE SURE THERE IS NO OIL, GREASE, HYDRAULIC FLUID, OR FUEL IN THE

VICINITY OF ANY FITTINGS BEING SERVICED.

CAUTION: DO NOT USE THREAD LUBRICANTS OF ANY KIND.  USE TEFLON TAPE (3M NO.

48) ON TAPERED PIPE THREADS, WITHOUT TAPE EXTENDING BEYOND THE
FIRST THREAD. REFER TO AFFECTIVE INFORMATION IN THIS CHAPTER.

CAUTION: BEFORE WORKING WITH THE SYSTEM, MAKE SURE AIRCRAFT IS

ELECTRICALLY GROUNDED AND YOUR HANDS, TOOLS, AND CLOTHES ARE
FREE OF OIL, GREASE AND DIRT.

14-74. INSPECTION AND MAINTENANCE. 

WARNING: FAILURE TO CONSULT APPLICABLE VENDOR PUBLICATION(S) WHEN

SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER
AIRCRAFT MAY RENDER THE AIRCRAFT UNAIRWORTHY. (SEE
INTRODUCTION - SUPPLEMENTARY PUBLICATIONS.)

Due to the nature of the process used to test compressed gas tanks, servicing and hydrostatic tests must
be conducted by a DOT or manufacturer (Scott Aviation) approved shop. The following material gives
recommended inspection and maintenance information for the various parts of the oxygen systems.

NOTE: Oxygen cylinders are identified by the ICC or DOT identification stamped on the cylinder.

Standard weight cylinders (ICC or DOT 3AA1800) must be hydrostatically tested every 5 years.
Lightweight cylinders of composite construction (DOT E8162), must be hydrostatically tested
every 3 years, and the service life may not exceed 15 years. The month and year of the last test
should be stamped on the cylinder beneath the ICC, DOT identification.

a.

Check the outlets for leakage both in the use and non-use condition and for leakage around an
inserted connector. For leak testing information, refer to the appropriate subject in this section.

b.

Check the high pressure gauge for accuracy by comparing its indicated pressure with that of a
gauge of known accuracy connected to the fill port.

c.

Inspect tank for dents, bulges, corrosion, and major strap chaffing marks. Should any of these
problems exist, the tank should be removed and hydrostatically tested.

XIV - ACCESSORIES AND UTILITIES

01/01/09

3C12

Summary of Contents for PA-34-200T Seneca II

Page 1: ...1A1 PART NUMBER 761 590 OCTOBER 31 2019 1A1 SERVICE MANUAL PA 34 200T PIPERAIRCRAFT CORPORATION PIPER seneca II...

Page 2: ...ation Manufacturers Association 1A2 Published by Piper Aircraft Inc Attn Technical Publications 2926 Piper Drive Vero Beach Florida 32960 U S A 1974 1979 1983 1986 1987 1996 1997 2007 2009 2019 Piper...

Page 3: ...cation Date Publication Date usage has varied over the years 1974 1996 is unknown 1997 2013 it generally was synchronized with the revision date regardless of when the revision was published In mid 20...

Page 4: ...ice publications SB SL etc and other Piper publications are available as described in the Owner Publications Catalog part of the Customer Service Information File see below Consult the Customer Servic...

Page 5: ...tion 1A8 Assignment of Subject Material 1A8 Pagination 1A8 Aerofiche Grid Numbering 1A8 Identifying Revised Material 1A9 Indexing 1A10 Warnings Cautions and Notes 1A10 Accident Incident Reporting 1A10...

Page 6: ...PIPER SENECA II SERVICE MANUAL INTRODUCTION TABLE OF CONTENTS 01 01 09 1A6 THIS PAGE INTENTIONALLY BLANK...

Page 7: ...ly indicated where a special application is required To confirm the correct hardware used refer to the PA 34 200T Parts Catalog P N 761 589 and FAR 43 for proper utilization Genuine PIPER parts are pr...

Page 8: ...ly indicated where a special application is required To confirm the correct hardware used refer to the PA 34 200T Parts Catalog P N 761 589 and FAR 43 for proper utilization Genuine PIPER parts are pr...

Page 9: ...his publication is divided into logical subject groupings based on aircraft system or task function Refer to paragraph 13 Section Index Guide 6 Pagination A modified legacy Aerofiche grid numbering sy...

Page 10: ...his publication is divided into logical subject groupings based on aircraft system or task function Refer to paragraph 13 Section Index Guide 6 Pagination A modified legacy Aerofiche grid numbering sy...

Page 11: ...his publication is divided into logical subject groupings based on aircraft system or task function Refer to paragraph 13 Section Index Guide 6 Pagination A modified legacy Aerofiche grid numbering sy...

Page 12: ...margin of the frame opposite revised or added material Revision lines indicate only current revisions with changes or additions to existing text and illustrations Changes in capitalization spelling p...

Page 13: ...r immediately To expedite and assist in reporting all incidents and accidents Piper Form 420 01 has been created See Service Letter 1041 for latest revision This procedure is to be used by all Dealers...

Page 14: ...070 A Division of Teledyne Continental Motors http www gillbatteries com 6 BRAKES AND WHEELS Vendor Parker Hannifin Corp PH 800 272 5464 Aircraft Wheel and Brake Division 1160 Center Road Avon Ohio 44...

Page 15: ...438 Rockmart Georgia 30153 0548 http www kandfindustries com 12 GEAR LOCKING ACTUATORS HYDRAULIC PUMP AND ALL HYDRAULIC COMPONENTS Vendor Parker Hannifin Corporation PH 800 C PARKER 6035 Parkland Boul...

Page 16: ...2 Instructions S 20 S 200 Series High Tension Magnetos or if installed Vendor Slick Aircraft Products PH 904 739 4000 Unison Industries FAX 904 739 4006 Attn Subscription Dept 7575 Baymeadows Way Jack...

Page 17: ...ies Service Manual P N MPC500 20 STARTER Vendor See listing under Alternator above or Sky Tec Partners Ltd PH 800 476 7896 350 Howard Clemmons Rd FAX 817 573 2252 Granbury TX 76048 http www skytecair...

Page 18: ...TATIONS 1A13 II HANDLING AND SERVICING 1A16C III INSPECTION 1C31 IV STRUCTURES 1D11 V SURFACE CONTROLS 1F20A VI HYDRAULIC SYSTEM 1I1 VII LANDING GEAR AND BRAKES 1J4C VIII POWERPLANT 2A7 IX FUEL SYSTEM...

Page 19: ...PIPER SENECA II SERVICE MANUAL SECTION INDEX GUIDE 01 01 09 1A12D THIS PAGE INTENTIONALLY BLANK...

Page 20: ...1 Cherrylock Rivet Removal 1D15 4 1a Hose Line Markings 1D16 4 1b Flareless Tube Fittings 1D18 4 1b1 Millivolt Drop Test 1D20B 4 1c Aileron and Flap Installation 1D22 4 2 Wing Installation 1E1 4 2a R...

Page 21: ...ing Tool 1G9 5 4 Aileron Rigging Tool 1G10 5 5 Stabilator and Stabilator Trim Controls 1G13 5 6 Stabilator Rigging Tool 1G16 5 7 Methods of Securing Trim Cables 1G16 5 8 Rudder and Brake Pedal Assembl...

Page 22: ...tch 1K22 7 10 Adjust Main Gear Down Limit Switch 1K22 7 11 Throttle Warning Switch 1K24 7 12 Nose Wheel Assembly 1L5 7 13 Main Wheel Assembly 1L7 7 14 Wheel Brake Assembly 1L8 7 15 Removal and Install...

Page 23: ...ts 2C6 8 31 Schematic Diagram of Fuel Injection System 2C8 8 32 Fuel Injector Nozzle Assembly 2C9 8 33 Engine Controls 2C10 8 34 Idle Speed and Mixture Adjustment Points 2C12 8 35 Sectional View of Al...

Page 24: ...3 are listed separately in Section XI see 2F18 12 1 Two Year Magnesium Battery Connections 2I22 12 2 Garrett ELT Schematic 2I23 12 3 Communications Components ELT Schematic 2J1 12 4 Emergency Locator...

Page 25: ...6 14 7 Centering of Brushes on Slip Rings 3A17 14 8 Wiring Schematic Electric Propeller Deicing System 3A19 14 9 Brush Block Assembly 3A20 14 10 Brush Module Assembly 3E2011 3A22 14 10a Alternate Modu...

Page 26: ...harging Hookup 3D12 14 31 Top Dead Center Casting Mark Sankyo Compressor 3D15 14 32 Rotation of Clutch Front Plate Sankyo Compressor 3D15 14 33 Condenser Air Scoop Installation 3D19 14 34 Expansion Va...

Page 27: ...PIPER SENECA II SERVICE MANUAL LIST OF ILLUSTRATIONS 01 01 09 1A12L THIS PAGE INTENTIONALLY BLANK...

Page 28: ...rials Thermoplastic Repair 1F7 IV IV Balance Specifications 1F17 V I Control Surface Travels and Cable Tensions 1F23 V II Cable Tension Vs Ambient Temperature 1F24 V III Troubleshooting Chart Surface...

Page 29: ...shooting Chart Electrical System 2H8 XI VI Lamp Replacement Guide 2H20 XI VII Electrical Wire Coding 2H21 XI VIII Electrical Symbols 2H22 XI IX Electrical System Component Loads 2H23 XIII I Inspection...

Page 30: ...PIPER SENECA II SERVICE MANUAL 01 01 09 LIST OF TABLES 1A12O THIS PAGE INTENTIONALLY BLANK...

Page 31: ...PIPER SENECA II SERVICE MANUAL LIST OF TABLES 01 01 09 1A12P END OF SECTION...

Page 32: ...1A13 PIPER SENECA II SERVICE MANUAL SECTION I AIRWORTHINESS LIMITATIONS...

Page 33: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 1A14...

Page 34: ...PIPER SENECA II SERVICE MANUAL SECTION I AIRWORTHINESS LIMITATIONS TABLE OF CONTENTS Paragraph Grid No Limitations 1A16A Inspections 1A16A Major Repairs to Life Limited Components 1A16A Life Limited P...

Page 35: ...I TABLE OF CONTENTS 01 01 09 1A16 PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK...

Page 36: ...r to Section III for Piper s recommended Inspection Programs 3 MAJOR REPAIRS TO LIFE LIMITED COMPONENTS Major repairs to areas defined in FAR Part 43 Appendix A must be shown using approved data to no...

Page 37: ...I AIRWORTHINESS LIMITATIONS 01 01 09 1A16B PIPER SENECA II SERVICE MANUAL END OF SECTION...

Page 38: ...PIPER SENECA II SERVICE MANUAL SECTION II HANDLING AND SERVICING 1A16C...

Page 39: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 1A16D...

Page 40: ...Jacking 1B7 2 13 Weighing 1B8 2 14 Leveling 1B8 2 15 Mooring 1B9 2 16 Locking Airplane 1B9 2 17 Parking 1B10 2 18 Towing 1B10 2 19 Taxiing 1B10 2 20 External Power Receptacle 1B11 2 21 Operation of E...

Page 41: ...Gear 1B21 2 49 Cleaning Exterior Surfaces 1B21 2 50 Cleaning Windshield and Windows 1B21 2 51 Cleaning Headliner Side Panels and Seats 1B22 2 52 Cleaning Carpets 1B22 2 53 Lubrication 1B22 2 54 Oil S...

Page 42: ...s of structural members of the airplane 2 4 WEIGHT AND BALANCE DATA When figuring various weight and balance computations the empty static and gross weight and center of gravity of the airplane may be...

Page 43: ...ER SENECA II SERVICE MANUAL II HANDLING AND SERVICING 01 01 09 1A20 Figure 2 1 Three View 1983 i 38 10 87 1 12 5 4 11 87 1 _ _______ 2 7 47 i i 11 2 1 CENTER LINE MAIN SPAR STA 106 628 STATIC GROUND L...

Page 44: ...PIPER SENECA II SERVICE MANUAL 01 01 09 II HANDLING AND SERVICING 1A21 Figure 2 2 Station References 1945 1 r W L 95 13 W L 60 36...

Page 45: ...20 18L Right Right Engine 10 79020 19R Magneto Timing 20 BTC Magneto Point Clearance 018 Spark Plugs Shielded Refer to latest revision of Teledyne Continental Aircraft Engine Service Bulletin M77 10 S...

Page 46: ...5 Governor Control Woodward Governor Model Left Engine C210659 Right Engine 210C58 Alternate Governor Model Hartzell Left Engine E 3 Right Engine E 3L Right Engine When Synchrophaser 49E 8L is instal...

Page 47: ...6 00 x 6 Cleveland 40 90 6 00 x 6 Cleveland 40 120 6 00 x 6 Heavy Duty Brake Type Cleveland 30 65 or 30 83 6 Tires Nose 6 00 x 6 6 ply or Nylon T T Type III 6 Tires Main 6 00 x 6 8 ply or Nylon T T T...

Page 48: ...to a maximum of two standard filler washers under the fastener head c Self locking Fasteners The use of self locking nuts fasteners and screws including fasteners with non metallic inserts is subject...

Page 49: ...l 412 Pitot and Static TT A 580 TT S 1732 Anti Seize Compound CAUTION LUBRICATE ENGINE FITTINGS ONLY WITH THE FLUID CONTAINED IN THE PARTICULAR LINE 2 7b THREAD LUBRICATION Lubricate all fittings on e...

Page 50: ...ly b If the fastener screw or nut is listed in Table II IV but the mating fastener is not listed tighten only to the low end of the torque range specified for the listed fastener In addition the follo...

Page 51: ...ange When the nut is stationary and the fastener is torqued use the higher side of the torque range In this case ensure one 1 washer is installed under the head as follows a If the subject chapter sec...

Page 52: ...the friction drag torque of the nut is 80 in lbs i e Table II IV Sheet 2 torque minus Table II IV Sheet 1 torque torque to a value of Maximum Permissible Gap Closing Torque Table II IV Sheet 1 torque...

Page 53: ...PIPER SENECA II SERVICE MANUAL II HANDLING AND SERVICING 01 01 09 1A30 THIS PAGE INTENTIONALLY BLANK...

Page 54: ...be used Refer to Figure 2 2a T Torque desired at the part A Basic lever length from center of wrench shank to center of handle This may be stamped on the wrench itself or it may be listed elsewhere B...

Page 55: ...5 110 200 250 120 150 75 110 45 70 7 16 20 450 500 270 300 520 630 300 400 180 280 110 170 1 2 20 480 690 290 410 770 950 450 550 280 410 160 260 9 16 18 800 1 000 480 600 1 100 1 300 650 800 380 580...

Page 56: ...e Limits Torque Limits Torque Limits Torque Limits Torque Limits Torque Limits Size In Lbs In Lbs In Lbs In Lbs In Lbs In Lbs Min Max Min Max Min Max Min Max Min Max Min Max 10 32 38 43 30 33 43 48 33...

Page 57: ...M TAB SCREW 5 STABILATOR ANO RUDDER STOPS STABILATOR TRIM TAB SCREW 2 FAIRING FIN 2 VENTILATING AIR INTAKE STABILATOR AND RUDDER STOPS STABILATOR TRIM TAB SCREW COMBUSTION HEATER COMBUSTION AIR INTAKE...

Page 58: ...VALVE 5 FAIRING 10 COWL OUTBOARD 11 HATCH NACELLE SKETCH A 1978 t 3 14 2 13 12 15 11 10 l FUELGAUGESENDER 2 COWL FLAP 3 PROPELLER RECHARGE VALVE 4 SPINNER PROPELLER 5 ENGINE OIL DRAIN 6 LINES WIRES CA...

Page 59: ...PIPER SENECA II SERVICE MANUAL II HANDLING AND SERVICING 01 01 09 1B6 THIS PAGE INTENTIONALLY BLANK...

Page 60: ...the airplane is handled in the manner described in the following paragraphs damage to the airplane and its equipment will be prevented 2 12 JACKING Jack the airplane as specified to perform various s...

Page 61: ...les or while the wheels are on the ground To level the airplane for purposes of weighing or rigging the following procedures may be used NOTE Always level the airplane laterally first then level the a...

Page 62: ...ropes to the wing tie down rings and the tail skid at approximately 45 degree angles to the ground When using rope constructed of non synthetic material leave sufficient slack to avoid damage to the a...

Page 63: ...d steering mechanism CAUTION When moving the aircraft forward by hand avoid pushing on the trailing edge of the ailerons as this will cause the aileron contour to change resulting in an out of trim co...

Page 64: ...24 FUEL SYSTEM 2 25 SERVICING FUEL SYSTEM At intervals of 50 hours or 90 days whichever comes first clean the fuel filter pack Remove and clean the filters in accordance with the instructions outlined...

Page 65: ...ible a blender supplied by the manufacturer should be used CAUTION Make sure that when adding an anti icing additive it is directed into the flowing fuel stream starting after and stopping before the...

Page 66: ...flow into a suitable container To clean the brake system flush with denatured alcohol 2 33 OLEO STRUTS 2 34 SERVICING OLEO STRUTS The air oil type oleo strut should be maintained at proper strut pist...

Page 67: ...PIPER SENECA II SERVICE MANUAL 940 _____________ M T D MINIMUM TURNING DISTANCE M T D 60 4 Ft Figure 2 7 Turning Distance Reissued 10 11 79 HANDLING AND SERVICING 1Bl4...

Page 68: ...is below the surface of the fluid NOTE An air tight connection is necessary between the plastic tube and the valve stem Without such a connection a small amount of air will be sucked into the oleo str...

Page 69: ...CTION SCREEN 4 ENGINE OIL FILTERS 14 PROPELLER Al R CHARGE 5 FUEL FILTERS 15 BRAKE RESERVOIR 6 INSTRUMENT A_IR FILTERS 16 NOSE GEAR STRUT 7 FUEL SYSTEM DRAINS 17 NOSE GEAR Tl RE 8 FUEL METERING CONTRO...

Page 70: ...hamber By watching the fluid pass through the plastic hose it can be determined when the strut is full and no air is present in the chamber 8 When air bubbles cease to flow through the hose fully comp...

Page 71: ...PIPER SENECA II SERVICE MANUAL II HANDLING AND SERVICING 01 01 09 1B18 THIS PAGE INTENTIONALLY BLANK...

Page 72: ...50 to the bungee e Within the fuselage disconnect the bungee from the rudder pedal arm by removing the nut washer and bolt f Remove the steering bungee from the aircraft g Cut the safety wire from the...

Page 73: ...aircraft wheel 4 The 7 bushings may be made from one inch phenolic or aluminum using a 1 1 2 inch hole saw to cut out the smaller bushing and a 1 3 4 hole saw to cut out the larger By inserting a 1 4...

Page 74: ...should not be more than one ounce out of balance 2 41 HYDRAULIC SYSTEM 2 42 SERVICING HYDRAULIC SYSTEM The hydraulic pump and landing gear actuating cylinders should be checked for leaks tightness of...

Page 75: ...presence of corrosion should be conducted at intervals of 50 hours or 30 days whichever comes first When corrosion is found at each 100 hour inspection or every 90 days the battery should be removed...

Page 76: ...irplane should be washed with a mild soap and water Harsh abrasive or alkaline soaps or detergents used on painted or plastic surfaces could make scratches or cause corrosion of metal surfaces Cover a...

Page 77: ...M ENGINE 2 55 SERVICING OIL SYSTEM The engine oil level should be checked before each flight and changed after each 50 hours or four months of engine operation During oil change the oil screen s shoul...

Page 78: ...might be found these are generally of no consequence and should not be confused with particles produced by impacting abrasion or pressure Evidence of internal engine damage found in the oil filter jus...

Page 79: ...HING AIRPLANE ENSURE LANDING GEAR FLIGHT CONTROLS FLAP TRACKS STABILATOR TRIM SCREW AND ENGINE COMPARTMENT ARE STILL PROPERLY LUBRICATED 1 Use recommended lubricants Where general purpose lubricating...

Page 80: ...if available lubricants listed in the Lubrication Charts should all be considered or equivalent Lubricant specifications become problematic over time Where a specific product is called out that manuf...

Page 81: ...27C above MIL G 81322 MIL PRF 81322G See MIL PRF 81322G above MIL H 5606 MIL PRF 5606H Hydraulic Fluid Petroleum Base Aircraft Missile and Ordnance MIL L 6082 SAE J 1966 Oil Lubricating Aircraft Pisto...

Page 82: ...Dry Lubricant MS 122 6075 MS 122AD Dry Lubricant Parker O Ring Lube Parker O LUBE O Ring Lubricant Parker 6PB or 6PB Parker MIL PRF 907E aka Kopr Kote Anti Seize Thread Compound High Temp up to 566 D...

Page 83: ...ean filter tap gently to remove dirt particles or wash in warm water and mild detergent and dry Do not blow out with compressed air Do not use oil Replace filter if damaged 8 OIL AND FILTER Continenta...

Page 84: ...2E MOBIL GREASE 28 100 HRS 6 MAIN GEAR DOOR CONTROL ROD ENDS MIL PRF 7870 100 HRS 7 MAIN GEAR SIDE BRACE LINK ASSEMBLY MIL PRF 23827 100 HRS 8 UPPER SIDE BRACE SWIVEL FITTING MIL PRF 23827 100 HRS 9 M...

Page 85: ...LINK ASSY See Spec Instr 2 MIL PRF 7870 100 HRS 8 NOSE GEAR TORQUE LINK ASSEMBLY AND STRUT HOUSING See Spec Instr 2 MIL PRF 7870 100 HRS 9 NOSE GEAR PIVOT POINT DRAG LINK ASSEMBLY DOWNLOCK AND CYLIND...

Page 86: ...REQUIRED 7 TEE BAR PIVOT POINTS AILERON AND STABILATOR CONTROL PULLEYS See Spec Instr 1 2 and 6 MIL PRF 7870 100 HRS 8 RUDDER TRIM TAB CONTROL ROD ROD END BEARINGS AND ARM ASSEMBLY See Spec Instr 1 a...

Page 87: ...TIONS TUBE CABLE ENDS AND STEERING ROD ENDS See Spec Instr 2 MIL PRF 7870 100 HRS 8 TOE BRAKE ATTACHMENTS See Spec Instr 2 MIL PRF 7870 100 HRS 9 BRAKE ROD ENDS Left Right See Spec Instr 2 MIL PRF 787...

Page 88: ...PIPER SENECA II SERVICE MANUAL 01 01 09 II HANDLING AND SERVICING 1C5 Figure 2 12 Lubrication Chart Control System Part II cont 938 SKETCH A 2016 SKETCH B C188 SKETCHC...

Page 89: ...PIPER SENECA II SERVICE MANUAL II HANDLING AND SERVICING 01 01 09 1C6 THIS PAGE INTENTIONALLY BLANK...

Page 90: ...Instr 8 and 13 REPLACE 50 HRS 3 AIR FILTER See Spec Instr 7 CLEAN 50 HRS 4 ALTERNATE AIR DOORS See Spec Instr 2 MIL PRF 7870 100 HRS 5 GOVERNOR CONTROLS See Spec Instr 2 MIL PRF 7870 100 HRS 6 CONTROL...

Page 91: ...ANISM See Spec Instr 2 MIL PRF 7870 500 HRS 3 PILOT COPILOT SEAT ADJUSTMENT See Spec Instr 2 and 15 MIL PRF 81322G 100 HRS 4 MAIN DOOR HINGES AND LATCH MECHANISM See Spec Instr 2 MIL PRF 7870 500 HRS...

Page 92: ...the English system to the metric system or back again Table II VII Torque Conversion Table II VIII Decimal Conversions Table II IX Temperature Conversion Table II X Weights and Measures Conversion Tab...

Page 93: ...PIPER SENECA II SERVICE MANUAL II HANDLING AND SERVICING 01 01 09 1C10 THIS PAGE INTENTIONALLY BLANK...

Page 94: ...27 5 3 802 30 4 148 32 5 4 493 35 4 839 37 5 5 185 40 5 530 42 5 5 876 45 6 222 47 5 6 567 50 6 913 52 5 7 258 55 7 604 57 5 7 950 60 8 295 62 5 8 641 65 8 987 67 5 9 332 70 9 678 72 5 10 024 75 10 3...

Page 95: ...672 67 17 065 3 16 188 19 4 762 11 16 688 69 17 462 13 64 203 20 5 159 45 64 703 70 17 859 7 32 219 22 5 556 23 32 f 719 72 18 256 15 64 234 23 5 593 47 64 734 73 18 653 1 4 250 25 6 350 3 4 750 75 19...

Page 96: ...0 17 8 0 32 0 143 33 290 554 0 12 22 10 50 0 148 89 300 572 0 6 67 20 68 0 154 44 310 590 0 1 11 30 86 0 160 00 320 608 0 4 44 40 104 0 165 56 330 626 0 10 00 50 122 0 171 11 340 644 0 15 56 60 140 0...

Page 97: ...Q 231 0 CU IN 0 1337 CU FT 3 785 LITERS 0 8327 IMPERIAL GAL 128 FLUID OZ IN 2 540 CM 08333 FT JOULES 0 000948 BTU 0 7376 FT LB MULTIPLY BY TO OBTAIN KILOGRAMS 2 205 LB 35 27 OZ 1000 GRAMS LITERS 1000...

Page 98: ...422 1 447 1 473 1 498 0 06 1 524 1 549 1 574 1 600 1 625 1 651 1 676 1 701 1 727 1 752 0 07 1 778 1 803 1 828 1 854 1 879 1 905 1 930 1 955 1 981 2 006 0 08 2 032 2 057 2 082 2 108 2 133 2 159 2 184...

Page 99: ...64 0 3593 9 1262 13 64 0 2031 5 1594 35 0 110 2 794 64 0 036 0 9144 T 0 358 9 1281 7 0 201 5 1054 7 64 0 1093 2 7781 65 0 035 0 899 S 0 346 8 7884 8 0 199 5 0546 36 0 1065 2 7051 66 0 033 0 8382 11 3...

Page 100: ...manufacturer s identification Uses Hose is approved for use in aircraft hydraulic pneumatic coolant fuel and oil systems Operating Temperatures Sizes 3 thru 12 Minus 65 F to plus 250 F Sizes 16 thru...

Page 101: ...A 580 Armite Product Armite Laboratories TT S 1732 Anti Seize Thread Fel Pro C5 A Fel Pro Incorporated Compound HIGH TEMPERATURE Buffing and Rubbing Automotive Type DuPont Company Compounds DuPont 7 R...

Page 102: ...28 Socony Mobil Oil Co Castrolease A1 Burmah Castrol LTD Low Temp Grease E P Texaco Incorp 5114 E P Grease Standard Oil of Calif AV55 Aeroshell Grease 7 Shell Oil Company Braycote 627S Mobil Grease 2...

Page 103: ...urpose Wide Temperature Aeroshell No 6 Shell Oil Company Mobil Grease 77 Mobil Oil Corporation or Mobilux EP2 Shell Alvania EP2 Shell Oil Company Royco 22 Royal Lubricants Company Mobil Grease 28 Mobi...

Page 104: ...Rockwell 950 Rockwell International Grease Waterproof Lubriplate Aero LUBRIPLATE High and Low Lubricants Co Temperature Hot Melt Adhesive Stick Form 1 2 in Sears Roebuck and Polyamids and Hot diameter...

Page 105: ...r R12 Frigidaire 525 Virginia Chemical Suniso 5 Sun Oil Company of Pennsylvania Texaco Capilla E Texaco Incorporated Oil Lubricating MIL PRF 7870C Caltex Low Temp Caltex Oil Products General Purpose O...

Page 106: ...sistency Company PR 1422 B 2 Sealant Trowling Consistency PR 1431G Faying Surface Seal Type 1 PR 1321 B 1 2 Access Panel Sealant PR 1560 MK Primer Anti Bacteriological Coating BJO 0930 Phenolic Union...

Page 107: ...Electric Co Silicone Products Dept Solvents Methylethyl Ketone Local Suppliers Methylene Chloride Acetone Y2900 Union Carbide Plastic Division Fed Spec PD 680 Local Supplier Type I Stoddard Solvent T...

Page 108: ...xtrex Chemical Industries Inc Turco 4217 Turco Products Inc Vinyl Foam 1 in x 1 8 in 530 Series Type I Norton Tape Division Vinyl Foam Tape 1 8 in x 1 in 501 Series Type II Norton Tape Division Vinyl...

Page 109: ...PIPER SENECA II SERVICE MANUAL II HANDLING AND SERVICING 01 01 09 1C26 THIS PAGE INTENTIONALLY BLANK...

Page 110: ...Irvine CA 92614 800 544 3338 www deftfinishes com Dextrex Chemical P O Box 501 Detroit MI 48232 Dow Corning Corporation Alpha Molykote Plant 64 Harvard Avenue Stanford CT 06902 Dukes Astronautics Co 7...

Page 111: ...01 United Street Mojave California 93501 661 824 4532 818 549 7999 http corporateportal ppg com na aerospace Products Research Co 2919 Empire Avenue Burbank CA 91504 213 849 3992 R Radiator Specialty...

Page 112: ...P O Box 233 Stoney Brook NY 11790 212 683 9221 Unelko Corporation 727 E 110th Street Chicago IL 60628 Union Carbide Plastic Div 270 Park Avenue New York NY 10017 212 551 3763 V Virginia Chemical 3340...

Page 113: ...PIPER SENECA II SERVICE MANUAL II HANDLING AND SERVICING 01 01 09 1C30 END OF SECTION...

Page 114: ...PIPER SENECA II SERVICE MANUAL 1C31 SECTION III INSPECTION...

Page 115: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 1C32...

Page 116: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK III TABLE OF CONTENTS 01 01 09 1C34...

Page 117: ...r Inspection Procedure 1C43 Special Inspections 1C59 Requirements 1C59 Per Flight Hour 1C59 Per Calendar Year 1C62 Per Specific Operation Operating Environment 1C64 Procedures 1C66 Control Cable Inspe...

Page 118: ...nt location or locations and or by a person or persons other than those recorded on the aircraft registration then the registered owner s is responsible for forwarding these to the operating location...

Page 119: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK III INSPECTION 01 01 09 1C36...

Page 120: ...ral inspection procedure required for type certification 2 Refer to paragraph 6 for Piper s recommended Inspection Programs They include the frequency and extent of the inspections required for the co...

Page 121: ...PIPER SENECA II SERVICE MANUAL III INSPECTION 01 01 09 1C38 THIS PAGE INTENTIONALLY BLANK...

Page 122: ...or replacement of components should be performed at the given periods The condition of various components can then be used as criteria for determining subsequent periods applicable to the individual...

Page 123: ...Bench Test Means removal of component from the aircraft to inspect for cleanliness impending failure need for lubrication repair or replacement of parts and calibration to at least the manufacturers...

Page 124: ...each subsequent installation to each subsequent removal if any or c the calendar time elapsed since the installation NOTE Dates stamped on individual components at the time of manufacture are typicall...

Page 125: ...ubscription to the Avantext TechPubs Maintenance Libraries for Piper Aircraft see www Avantext com P N 767 592 for the Piper PA 34 200T Refer to Piper s Customer Service Information Aerofiche P N 1753...

Page 126: ...for instructions on how to gain access to remove any item that must be removed and is not completely accessible 3 Inspection Report Forms To help in the performance of periodic inspections Inspection...

Page 127: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK III INSPECTION 01 01 09 1C44...

Page 128: ...corrosion O O O 8 Rotate blades and check for tightness in hub pilot tube Refer to Section VIII O O O 9 Inspect complete propeller and spinner assembly for security chafing cracks deterioration wear...

Page 129: ...O 15 Inspect magnetos See Note 18 O O O 16 Check breaker felts for proper lubrication O O O 17 Check magnetos to engine timing O O O 18 Remove induction air filter and tap gently to remove dirt partic...

Page 130: ...vel O O 41 Check condition and tension of compressor drive belt Refer to Service Manual Section XIV O O 42 Check security of compressor mounting O O 43 Inspect compressor clutch security and condition...

Page 131: ...nts lines and attachments O 14 Inspect gyro operated instruments and electric turn and bank Overhaul or replace as required O 15 If installed replace filters in gyro horizon and directional gyro instr...

Page 132: ...fuel lines valves and gauges for damage and operation O 16 Check security of all lines O 17 Inspect vertical fin for surface damage or irregularities i e skin cracks distortion dents corrosion and exc...

Page 133: ...curity routing chafing deterioration wear and correct installation O 34 Inspect ELT battery for condition date per FAR 91 207 O 35 Inspect ELT installation and antenna for condition and security Repla...

Page 134: ...ct installation O 20 Install inspection plates and fairings O G LANDING GEAR GROUP NOTE The following inspections incorporate the requirements of Piper Service Bulletin PSB No 1123B Any later revision...

Page 135: ...retraction links bolts and bushings for condition and security See Note 10 O 28 Inspect nose gear upper drag link AN7 35 attach bolt or the alternate NAS6207 50D bolt per Nose Landing Gear 100 Hour U...

Page 136: ...t of the P N 95712 004 retraction link assembly to the actuator mounting bracket Replace if wear grooves are noted in either the bolt or bushing O 35 Inspect the AN23 25 stop bolt in the actuator moun...

Page 137: ...ne idle O O O O 16 Check electronic equipment operation Refer to Section XII for ELT check O O 17 Check air condition compressor clutch operation O O 18 Check air conditioner condenser scoop operation...

Page 138: ...n and servicing as well as inspecting critical components b The 100 hour inspection is a complete inspection of the airplane identical to an annual inspection NOTE A log book entry should be made upon...

Page 139: ...lowable rudder tab and trim free play 15 Maintain cable tensions specified in Section V 16 Replacement brushes are no longer available When brushes wear out replace the Prestolite pump with a new Oild...

Page 140: ...their entire length Visually inspect the cable thoroughly for damage not detected by the cloth Replace any damaged or frayed cables a See Special Inspections Procedures Control Cable Inspection or th...

Page 141: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK III INSPECTION 01 01 09 1C58...

Page 142: ...ar trunnion assemblies P N s 67926 030 67926 032 67926 040 or 67926 042 Left and 67926 031 67926 033 67926 041 or 67926 043 Right each embossed with forging number 02599 2 and have accumulated 2000 ho...

Page 143: ...ort Manual available from Teledyne Continental Motors Inc PH 800 718 3411 or http www tcmlink com 6 Lubricate per Lubrication Charts Section II 7 If installed replace the pressure system in line air f...

Page 144: ...overhaul or as specified by the pump manufacturer c Replace engine driven fuel pumps at engine overhaul or each twelve 12 years whichever comes first j Each 2000 Hours 1 Each 2000 hours or seven 7 yea...

Page 145: ...stortion security of mounting and current hydrostatic test date b Each Thirty 30 Days 1 Check propeller air pressure 2 Inspect battery box or shelf and cables Flush box as required and fill battery pe...

Page 146: ...or replace Hartzell propellers each five 5 or six 6 years or each 2000 or 2400 hours Refer to latest revision of Hartzell Service Letter No 61 to determine specific requirements for individual airpla...

Page 147: ...PIPER SENECA II SERVICE MANUAL III INSPECTION 07 31 09 1C62B THIS PAGE INTENTIONALLY BLANK...

Page 148: ...No fluid hose may exceed twenty 20 years total time in service 2 Replace each Airborne 1H24 series check valve manifold at ten years from date of manufacture m Each Twelve 12 Years Each twelve 12 yea...

Page 149: ...leos Clean Before each flight Inspect 100 Hours Landing Gear Wheel Clean inspect and repack 50 Hours Bearings Windows Inspect for cracks erosion crazing Daily visibility and cleanliness Structure drai...

Page 150: ...alt or high humidity environments d Operation in Extreme Cold Item Inspection Inspection Interval Hydraulic Pneumatic Check all fittings and attachments for First 100 Hour then and Environmental secur...

Page 151: ...ley or through a fairlead remove cable from aircraft to the extent necessary to expose that particular section Examine cables for broken wires by passing a cloth along length of cable This will clean...

Page 152: ...e same condition is taking place internally particularly in the sections of the cable which pass over pulleys and quadrants This condition shown in Figure 3 3 is not easily detected unless the strands...

Page 153: ...NOTE Check all exposed sections of cable for corrosion after a cleaning and or metal brightening operation has been accomplished in that area e Cable Maintenance CAUTION TO AVOID REMOVAL OF CORROSION...

Page 154: ...corrosion or cracking however minute is cause for replacement A logbook entry documenting the replacement of a cable terminal turnbuckle or other cable fitting relieves the inspection requirement for...

Page 155: ...A II SERVICE MANUAL Figure 3 4 Pulley Wear Patterns III INSPECTION 01 01 09 1C70 EXCESSIVE CABLE WEAR PULLEY MISALIGNMENT PULLEY TOO LARGE FOR CABLE CABLE MISALIGNMENT J l Jill j FROZEN BEARING NORMAL...

Page 156: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 01 01 09 III INSPECTION 1C71...

Page 157: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK III INSPECTION 01 01 09 1C72...

Page 158: ...anual No 115 McCauley Propellers see latest revision of McCauley SB 177 Engine See latest revisions of appropriate Each occurrence Teledyne Continental Service Bulletins before further flight and Over...

Page 159: ...tion and Each occurrence Attachments damage Replace or repair before further flight as required C Severe Turbulence Hard or Overweight Landing CAUTION MINOR OR APPARENTLY SUPERFICIAL DAMAGE MAY INDICA...

Page 160: ...ng before further flight skins for wrinkles cracks popped or loose rivets Remove access plates and inspect for internal damage to ribs stringers and sparwebs and fuel tanks for damage attachment and l...

Page 161: ...If there are any questions regarding repairs or procedures contact your Piper Dealer s Service Advisor DSA 3 Determine the water level on the aircraft Determine which operating and or electrical comp...

Page 162: ...er operation Engine Remove disassemble and inspect If immersed each event Examine all parts paying particular before further flight attention for evidence of corrosion rust or contaminants imbedded on...

Page 163: ...onnectors clean and inspect for corrosion Replace all corroded or pitted connectors Inspect for wire corrosion at connector Check all harness assemblies for entrapped contaminants Clean and check for...

Page 164: ...and ducting Fuel System Remove and clean fuel cells and fuel cells If immersed each event wing area Clean all associated lines and before further flight pumps Clean and inspect all fuel tank vents ca...

Page 165: ...r MIL I 5585A Remove and clean regulator valve per appropriate Scott publication Replace pressure gauge Avionics Systems Replace avionics If immersed each event before further flight Clean and inspect...

Page 166: ...Modification SB 491 761 018V Pneumatic Deicer Tubing Inspection SB 553 761 133 Avionics Bus Bar Inspection and Modification SL 742 Seneca II Refinement Modifications SL 754 760 926 Auxiliary Fuel Sys...

Page 167: ...0 SB 669 Altimatic IIIC Autopilot Trim Servo Cable Alignment Modification 1975 1981 SB 677 Publications for Aircraft Operation SB 787C Main Landing Gear Trunnion Housing SB 798 Turbo Marking Removal S...

Page 168: ...king and Disposition SL 1069 Flight Control Cable Terminal Corrosion Inspection SL 1074 S TEC Autopilot Component Seating Procedure SL 1086 Propeller Blade De ice Boots Maintenance VSP 69 Bendix Servi...

Page 169: ...PIPER SENECA II SERVICE MANUAL III INSPECTION 01 01 09 1D10 END OF SECTION...

Page 170: ...PIPER SENECA II SERVICE MANUAL 1D11 SECTION IV STRUCTURES...

Page 171: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 1D12...

Page 172: ...1D21 4 11 Wing Flap 1D21 4 12 Removal of Wing Flap 1D21 4 13 Installation of Wing Flap 1D21 4 14 Wing 1D24 4 15 Removal of Wing 1D24 4 16 Installation of Wing 1E3 4 16a Rib Assembly Inspection and Mod...

Page 173: ...m 1E21 4 49 Removal of Door Lock Assembly 1E21 4 50 Installation of Door Lock Assembly 1E21 4 51 Removal of Door Safety Auxiliary Latch 1E21 4 52 Installation of Door Safety Auxiliary Latch 1E21 4 53...

Page 174: ...Preparation for Liquid Safety Walk 1F13 4 69 Product Listing for Liquid Safety Walk Compound 1F13 4 70 Application of Liquid Safety Walk Compound 1F13 4 71 Surface Preparation for Pressure Sensitive S...

Page 175: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK IV TABLE OF CONTENTS 01 01 09 1D12D...

Page 176: ...e construction with a removable fiberglass or thermoplastic tip Installed in each wing ahead of the main spar are two metal fuel tanks with a capacity of 24 5 U S gallons each or 49 0 U S gallons tota...

Page 177: ...PIPER SENECA II SERVICE MANUAL IV STRUCTURES 01 01 09 1D14 THIS PAGE INTENTIONALLY BLANK...

Page 178: ...8361 VIEW2 Added 8 10 80 PIPER SENECA II SERVICE MANUAL SMALL CENTER DRILL VIEW 1 VIEW3 Figure 4 1 Cherrylock Rivet Removal 1D15 STRUCTURES...

Page 179: ...ALS LETTERS AND STRIPE E SELF SEALING AROMATIC RESISTANT HOSE C FLAME AROMATIC AND OIL RESISTANT HOSE lE T l Al QN ELECT l Al Elfe l Al ELECTRICAL CONDUIT GREEN llfAIHING l fN Ut r 11NG YGEN Uf 4 IM N...

Page 180: ...each compartment through which the line runs In addition identification markers are placed immediately adjacent to each valve regulator filter or other accessory within a line Where paint or tags are...

Page 181: ...NG AND HOSE LUBRICANTS SLEEVE PILO TUBE SHOULDER SLEEVE FITTIN STEP 1 Added 8 10 80 SLEEVE CUTTING EDGE rnn TU f i f NUT FLARELESS 11JBE FITfING STEP 2 3 32 TO 1 8 INCH STEP 3 SLIGlff DEFORMATION PERM...

Page 182: ...s resilient it does not provide as good a vibration damping effect as other cushion materials Use bonded clamps to secure metal hydraulic fuel and oil lines in place Unbonded clamps should be used onl...

Page 183: ...on of moveable components of the aircraft 3 No self tapping screws used for bonding purposes 4 Exposed conducting frames or parts of electrical or electronic equipment should have a low resistance bon...

Page 184: ...is permissible for this grounding Battery Ground Point 010 Static wick mounting plates TCO Model B 4 P N 452 094 1 00 NOTE Where jumper wires or cables are used to accomplish a proper bond resistance...

Page 185: ...nnected at the point of connection on the wing rib and the positive lead may be disconnected at the wire terminal or unscrewed from the light assembly c Inspect the fiberglass wing tip to ascertain th...

Page 186: ...ng and install the bolts washers and nuts at the hinges b Connect the aileron control rod to the aileron at the center hinge brackets with bolt washers and nut 4 11 WING FLAP CAUTION FLAP SKINS MUST B...

Page 187: ...CA II SERVICE MANUAL B BOLT AN3 10A AN960 10 MS20365 l 032C SKETCH B D A322 BOLT AN3 11A WASHER AN960 10 NUT MS20365 1032C BUSHING 63900 19 2 REQ 2 REQ SKETCH D 1 Figure 4 lc Aileron and Flap Installa...

Page 188: ...E MANUAL BOLTAN3 l0A AN960 l0 MS20365 1032ct SKETCH A 0 0 0 A3 22 BOLT AN3 13A WASHER AN960 10 NUT MS20365 1032C BUSHING 63900 20 2 REQ SKETCH E 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ J __...

Page 189: ...of the spar j If the left wing is being removed remove the cotter pin from the pulley bracket assembly to allow the left aileron balance cable end to pass between the pulley and bracket k Disconnect...

Page 190: ...ETCH A en PIPER SENECA II SERVICE MANUAL A366 o o o 0 t I _ _ M O O O 0 o O I o o 10 0 I o o__o_o__ iii iiiiaiiii i WASHER AN960 616 0 WASHER AN960 616 L 5 BOLT NAS464 P6 LAS NUT 21042 6 MAX TORQUE 36...

Page 191: ...N960 616L 1 AN960 616 2 MAX NAS4 64 P6 LA2 l MS2 l 04 2 6 1 AN960 616 L 1 96352 3 3 NAS464P5LA21 MS2 l 042 5 1 AN960 516L I 96352 2 3 NAS4 64 PS LA2 0 MS21042 5 l AN960 516L 1 AN960 516 2 MAX NAS464P6...

Page 192: ...fittings against each other in which case the AN960 616L washer should be used under the bolt head The AN960 616 washer may be added under the nut when not used as a shim Refer to Sketch B Section B B...

Page 193: ...refill the brake system with hydraulic fluid in accordance with Servicing Brake System Section II Bleed the system as outlined in Section VII and check for fluid leaks s Check the fluid level of the...

Page 194: ...Place the airplane on jacks per Paragraph 2 12 2 In both the right and left wings a Inspect the Aft Rib Assembly at W S 49 25 for any evidence of cracks see Figure 4 2a Sheet 1 b Inspection shall be...

Page 195: ...AL IV STRUCTURES 01 01 09 1E4B Figure 4 2a Wing Rib Inspection W S 49 25 Sheet 1 of 2 WING RIB ASSY W S 49 25 URIN TION AREA OF CONCENTRATION AFT MAIN SPAR 0 0 0 TRIM LINE IS 0 21 INCH PARALLEL TO AFT...

Page 196: ...bly for evidence of cracks in the bend radius of the flange common to the Main Spar Web as show in Figure 4 2a Sheet 1 using dye penetrant inspection techniques 3 If a crack is detected identify the p...

Page 197: ...utside of allowable limits The specified hole size for each fitting is 0 3745 0 3765 inch diameter b If the holes meet the requirements specified above inspect gap between the fittings 1 If gap is bel...

Page 198: ...on use the following method to inspect stabilator attach brackets for rust and corrosion between the steel attach fittings and the adjacent fuselage structure Take corrective action as required a Remo...

Page 199: ...tal and diagonal support brackets i Move the trim assembly up through the tail cone fairing cutout in the stabilator and remove with cable from the airplane j Remove the stabilator by disconnecting th...

Page 200: ...a Place the trim tab in position on the aft end of the stabilator b Replace the old hinge pins with new pins Refer to Parts Catalog P N 761 589 c Insert the pins and secure by bending the end to a 45...

Page 201: ...and operation of the rudder b Connect the rudder trim tab push rod to the actuating link with bolt washer nut and cotter pin c Connect the tail position light electrical lead at the quick disconnect...

Page 202: ...0253PZ SKETCH C AJOO A299 BOLT AN173 1A SKETCH A JO 000 01 L_ _ _ _ _ _ _ _ _J SKETCH F BOLT AN4 5A WASHER AN960 416L TORQUE TO 100 IN LBS WASHER AN960 10 2 REQ 1 UNDER HEAD 1 UNDER NUT NUT MS20365 10...

Page 203: ...5 1032C 4 REQ TORQUE NUT 35 TO 4 0 IN LBS BOLT NAS464P3A4 WASHER AN960 10 2 REQ NUT MS21045 L3 4 REQ TORQUE NUT TO 65 5 IN LBS SEE CAUTION CAUTION IDENTIFY HARDWARE BEFORE TORQUING BOLT NAS I04 17 WAS...

Page 204: ...ER NUT BOLT ANl 73 I0A WASHER AN960 10 2 REQ NUT MS20365 1032C BOLT AN4 7A WASHER AN960 PD10 NUT MS20365 1032C V r 1 _ _ __ _ TORQUE BOLT TO 70 80 IN LBS WASHER AN960 WASHER AN960 I0L AS REQ TO CENTER...

Page 205: ...01 09 1E10 4 27 RUDDER TRIM TAB 4 28 REMOVAL OF RUDDER TRIM TAB Refer to Figure 4 3 a Remove the bolt assembly which connects the trim tab actuating arm to the tab assembly b Remove the trim tab hinge...

Page 206: ...the fin tip cover and the fairing at the forward base of the fin b Remove the rudder per instructions given in Paragraph 4 25 c Disconnect the leads from the antenna terminals optional and attach a l...

Page 207: ...mination will wet the insulation around the aft wing attach fittings creating a highly corrosive environment B Procedure Each 100 hours inspect to determine condition of the aircraft window and door s...

Page 208: ...continued operation 5 If sealing windows use P N 279 058 Sealant Bostik 1100 FS or equivalent 6 If using insulation other than Piper original material be sure that the insulation is flame resistant a...

Page 209: ...ivets screws inner panels channels and brackets necessary to remove attach fitting NOTE In order to remove some channels removal of the wings may be required 7 Remove wing attach fitting from the airc...

Page 210: ...01 01 09 IV STRUCTURES 1E12C Figure 4 4b Fuselage Drain Hole Installation FROM BOTTOM OF AIRCRAFT LOCATE DRILL ONE 191 DRAIN HOLE EACH SIDE BENEATH EACH ATTACH FITTING USING MEASUREMENTS SHOWN jALL S...

Page 211: ...ter edge of the entire windshield c Apply a strip of vinyl foam tape 1 8 x 1 wide type 1 P V C over the plastic tape completely around the top and outboard edges of the windshield d Apply white PR307...

Page 212: ...ALANT BLACK VINYL TAPE VINYL J FOAMT J i r t D D Reissued 10 11 79 957 WHITE SEALANT 899 B B E E F VINYL FOAM TAPE F Figure 4 5 Windshield Installation 1E13 965 VINYL FOAM TAPE BLACK VINYL TAPE c c WH...

Page 213: ...A damaged window should be saved to provide a pattern for shaping the new window 4 39 INSTALLATION OF WINDOWS SIDE Refer to Figure 4 6 a Cut or grind the new window to the same dimension as the window...

Page 214: ...oor s skin 2 With the tape aligned on the window apply pressure to force the seal against the window 3 Remove the protective paper from the tape and set window in place on the door 4 With a narrow han...

Page 215: ...VIEWED INSIDE LOOKING OUT EXTERNAL SKIN OF DOOR T SIDE PANEL COVER PANEL WINDOW RETAINER B COVER PANEL SEALANT SKIN OF DOOR SECTION C C COVER i 1 PANEL 1 I WINDOW AND PANEL RETAINER SIDE PANEL WINDOW...

Page 216: ...proceeding with installation instructions make sure the windlacing is rolled back far enough to prevent adhesive from coming in contact with it c If the door jamb is flaking or excessively scuffed pro...

Page 217: ...F INSTALLATION I 1 SNUBBER BUTT JOINT SHOULD OCCUR AT DOOR DRAIN AREA AS APPLICABLE 2 ORIENT SNUBBER FLAT WITH SURFACE INDICATED BY NOTE DESIGNATION C i SEE NOTE 2 Added 8 10 80 SEE NOTE 1 SECTION A A...

Page 218: ...STALLATION NOTES 2 ORIENT SNUBBER FLAT WITH SURFACE INDICATED WITH NOTE DESIGNATION 3 TRY TO KEEP WIND LACING AT LEAST 03 TO 06 IN FROM SNUBBER OUTS SEE NOTE j 3 SECTION E E SNUBBER FUSELAGE SKIN ROTA...

Page 219: ...y peeling back a small local area of the snubber leg k With adhesive properly cured remove the masking tape Replace scuff plates and windlacing If the snubber for the aft cabin door has just been inst...

Page 220: ...OF DOOR LOCK ASSEMBLY a Remove the door trim upholstery by removing the attachment screws b Loosen the nut on the lock assembly and remove the lock by turning it sideways 4 50 INSTALLATION OF DOOR LOC...

Page 221: ...he baggage door using the flats of the doubler and baggage door as the locators Drill the three 30 129 Diameter attachment holes Remove the doubler and countersink 100 degrees the three holes on the o...

Page 222: ...ng Figure 4 7f Latch Plate Lock Tab Modification Forward Latch Plate I 96936 00 I MODIFIED TAB SPLIT HALF BENT DOWN A Doubler 36521 02 1 25 L 129 Dia Holes Rivet MS20426 A4 5 3 required VIEW LOOKING A...

Page 223: ...ation Modification 1 25 P C D RIVET SYMBOLS FORWARD LOCK APERTURE REF LATCH MECHANISM ATTACH FLANGE VIEW LOOKING ON INSIDE FACE OF DOOR EXISTING RIVET LOCATIONS RIVET MS 20426 AD4 ADDITIONAL RIVET LOC...

Page 224: ...ER SENECA II SERVICE MANUAL 01 01 09 IV STRUCTURES 1E22G Figure 4 7h Roll Pin Safety Wire I I LATCH ASSEMBLY COVER PLATE C I J ____ ORIENT SAFETY WIRE AS SHOWN TO AVOID INTERFERENCE WITH OTHER COMPONE...

Page 225: ...he baggage door using the flats of the doubler and baggage door as the locators Drill the three 30 129 Diameter attachment holes Remove the doubler and countersink 100 degrees the three holes on the o...

Page 226: ...ng Figure 4 7f Latch Plate Lock Tab Modification Forward Latch Plate I 96936 00 I MODIFIED TAB SPLIT HALF BENT DOWN A Doubler 36521 02 1 25 L 129 Dia Holes Rivet MS20426 A4 5 3 required VIEW LOOKING A...

Page 227: ...ation Modification 1 25 P C D RIVET SYMBOLS FORWARD LOCK APERTURE REF LATCH MECHANISM ATTACH FLANGE VIEW LOOKING ON INSIDE FACE OF DOOR EXISTING RIVET LOCATIONS RIVET MS 20426 AD4 ADDITIONAL RIVET LOC...

Page 228: ...ER SENECA II SERVICE MANUAL 01 01 09 IV STRUCTURES 1E22G Figure 4 7h Roll Pin Safety Wire I I LATCH ASSEMBLY COVER PLATE C I J ____ ORIENT SAFETY WIRE AS SHOWN TO AVOID INTERFERENCE WITH OTHER COMPONE...

Page 229: ...ne or door by drilling out the rivets and removing the hinge 4 60 INSTALLATION OF BAGGAGE DOOR HINGE a Place the hinge halves together and install the hinge pin b Install the door into the closed posi...

Page 230: ...ICE MANUAL I SCREW 2 SCREW 3 CLAMP 4 CLAMP 5 BUSHING 6 CABLE 7 STOP ASSY STOP SHOULD BE LUBRICATED AND FREE TO SWIVEL WITHOUT EXCESSIVE PLAY Figure 4 8 Seat Back Lock THIS SPACE INTENTIONALLY LEFT BLA...

Page 231: ...ENT The inertia reel locking feature prevents the shoulder strap from extending and holds occupant in place For normal movement strap will extend and retract as required If required adust inertia reel...

Page 232: ...dd Instructions for Continued Airworthiness ICA to the maintenance record Any such ICA must be based on approved data 4 62a METAL WIRE STITCHING REPAIR See Figure 4 8a PIR PPS20024 Rev A CAUTION METAL...

Page 233: ...gainst hardest material Install washer agains opposite side of joint and upset rivet bucktail against washer NAS 1149CN432R Washer MS20615M4 Rivet Mone When materials being joined include only aluminu...

Page 234: ...fiberglass millings mixed with the gel d Work the mixture of resin fibers and catalyst into the damaged area using the sharp point of a putty knife or stick to press it into the bottom of the hole an...

Page 235: ...bubbles will show white in the patch and they should all be worked out to the edge Remove excess resin before it gels on the part Allow patch to cure completely j Remove cardboard or aluminum sheet f...

Page 236: ...A317 5 4 5 Reissued 10 11 79 PIPER SENECA II SERVICE MANUAL 5 5 A318 5 5 5 Figure 4 9 Skin Material and Thickness 1F3 STRUCTURES...

Page 237: ...024 0 020 3 2024 T3 020 4 2024 T3 025 5 2024 T3 032 6 2024 T3 040 7 2024 T3 051 8 2024 T3 025 9 FIBERGLASS 10 2024 T3 020 11 THERMOPLASTIC OR FIBERGLASS 12 2024 0 025 13 5052 H34 040 14 321AST STL 016...

Page 238: ...e being repaired insolvent until the desired paste like consistency is achieved 2 This mixture is then applied to the damaged area Upon solvent evaporation the hard durable solids remaining can easily...

Page 239: ...sanding and finishing after the repair has cured If patching compound is used the repair should be made in layers not exceeding a 1 2 inch in thickness at a time thus allowing the compound to ure d i...

Page 240: ...antastic Spray Obtain From Local Suppliers Perchlorethylene VM P Naphtha Lighter Fluid ABS Solvent Cements Solarite 11 Series Solar Compounds Corp Linden N J 07036 Solvents Methylethyl Ketone Obtain F...

Page 241: ...PIPER SENECA II SERVICE MANUAL 871 Figur 4 10 Surface Scratches Abrasions or Ground in Dirt 871 Figure 4 11 Deep Scratches Shallow Nicks and Small Holes Reissued 10 11 79 1F8 STRUCTURE...

Page 242: ...826 870 Reissued 10 11 79 PIPER SENECA II SERVICE MANUAL THOROUGHLY MIX USING FIGURE EIGHT MOTION Figure 4 12 Mixing of Epoxy Patching Compound Figure 4 13 Welding Repair Method 1F9 STRUCTURE...

Page 243: ...827 Reissued 10 11 79 PIPER SENECA II SERVICE MANUAL Figure 4 14 Repairing of Cracks lFlO DOUBLER PLATE BONDED TO UNDERSIDE OF DAMAGED AREA STRUCTURE...

Page 244: ...PIPER SENECA II SERVICE MANUAL 828 DAMAGED A REA 1 1 1 l1 H I iii Figure 4 15 Various Repairs Reissued 10 11 79 lFll STRUCTURE...

Page 245: ...827 829 Reissued 10 11 79 PIPER SENECA II SERVICE MANUAL Figure 4 16 Repair of Stress Lines 832 I PROFILE VIEW INDICATING DAMAGED AREA Figure 4 17 Repair of Impacted Damage 1F12 STRUCTURE...

Page 246: ...ay Matting Nonslip included in Piper Part No 179 872 4 70 APPLICATION OF LIQUID SAFETY WALK COMPOUND Liquid safety walk compound shall be applied in an area free of moisture for a period of 24 hours m...

Page 247: ...both lengthwise directions Make sure all edges adhere to the wing skin e Install leading edge retainer by inserting between wing leading edge fairing and forward wing spar Hold all parts in position b...

Page 248: ...ol from the control surface and balance the tool itself by adding or removing nuts or washers from the beam balancing bolt When balancing the tool the movable weight must be at the bar s hinge centerl...

Page 249: ...NTERLINE NUTS AND OR WASHERS ADDED AS REQUIRED I TO BALANCE TOOL ITSELF BEAM BALANCING BOLT USED FOR BALANCING THE TOOL ITSELF ONCE THE TRAILING EDGE SUPPORT HAS BEEN SETI HINGE CENTERLINE PLACED DIRE...

Page 250: ...the stabilator the assembly must be complete including the trim tab the tab push rod and end bearing stabilator tips and all attaching screws Before balancing tape the trim tab in neutral position wit...

Page 251: ...MANUAL STATIC BALANCE IN LB WEIGHT X INCHES LOCATE TOOL BALANCE POINTS DIRECTLY OVER HINGE CENTERLINE 2020 Reissued 10 11 79 LOCATE TOOL DIRECTLY OVER AILERON HINGE CENTERLINE Figure 4 19 Aileron and...

Page 252: ...ight b Stabilator and Rudder Tabs Move the stabilator or rudder to one of its limits of travel and secure Insert a scale type straight edge in the groove between the surface and its tab Grasping the t...

Page 253: ...PIPER SENECA II SERVICE MANUAL IV STRUCTURES 01 01 09 1F20 END OF SECTION...

Page 254: ...PIPER SENECA II SERVICE MANUAL 1F20A SECTION V SURFACE CONTROLS...

Page 255: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 1F20B...

Page 256: ...ment of Stabilator Controls 1G15 5 16 Stabilator Trim Controls 1G17 5 17 Removal of Stabilator Trim Assembly Forward 1G17 5 18 Installation of Stabilator Trim Assembly Forward 1G18 5 19 Removal of Sta...

Page 257: ...ontinued Paragraph Grid No 5 35 Wing Flap Controls 1H8 5 35a Flap Handle Control Cable Attachment Bolt 100 Hour Inspection 1H8 5 36 Removal of Wing Flap Controls 1H8 5 37 Installation of Wing Flap Con...

Page 258: ...the cables f When installing rod end jam nuts refer to Figure 5 1a for proper installation method After adjusting a jam nut ensure that it is securely tightened and thoroughly inspected g If the push...

Page 259: ...SERVO ONLY 0 1 TY j 25 1 TRIM 7 1 SERVO ONLY Maximum tab ree play must not excee 0 25 inches CONTROL WHEEL TEE BAR BOBWEIGHT TRAVEL 27 30 1 J 10 r 1 17 30 75 i 70 47 30 27 30 ct_ VERTICAL TEE BAR NEU...

Page 260: ...NSION CAUTION CABLE TENSIONS GIVEN IN TABLE V I APPLY ONLY TO AIRPLANES WITHOUT AUTOPILOT BRIDLE CABLE INSTALLATIONS IF AN AUTOPILOT USING BRIDLE CABLES HAS BEEN INSTALLED CONSULT THE APPROPRIATE AUTO...

Page 261: ...NSION CAUTION CABLE TENSIONS GIVEN IN TABLE V I APPLY ONLY TO AIRPLANES WITHOUT AUTOPILOT BRIDLE CABLE INSTALLATIONS IF AN AUTOPILOT USING BRIDLE CABLES HAS BEEN INSTALLED CONSULT THE APPROPRIATE AUTO...

Page 262: ...from the tee bar assembly separate the control wheel tubes 4 at the flexible joints 2 by removing the nuts washers and bolts 3 6 Disconnect the bobweight actuating rod 24 at the tee bar 7 Remove the t...

Page 263: ...ING 9 WASHER CONTROL WHEEL l 0 PLATE CONTROL WHEEL 11 WASHER CONTROL WHEEL 12 SPACER STOP 13 SPROCKET LEFT CON f ROL WHEEL 14 CHAIN LEFT ROLLER 15 IDLERSPROCKET AFT 16 CHAIN RIGHT ROLLER 17 PIN 18 IDL...

Page 264: ...RFACE CONTROLS 01 01 09 1G2 Figure 5 1a Correct Method of Installing Rod End Bearing 901A WRONG METHOD DAMAGE HERE DAMAGE HERE IMPROPER TOOL RESULTS IN LOCKED BALL ONLY CORRECT METHOD A SPECIAL WRENCH...

Page 265: ...ellcranks should contact their stops before the control wheel hits its stop Models which have adjustable aileron tee bar stops must maintain 030 to 040 clearance between the sprocket pin and the adjus...

Page 266: ...thread protrusion for proper installation d Install pin through tube and shaft 1 If pin shoulder does not protrude past sprocket hub install a AN960 10 washer 2 If pin shoulder does protrude past tube...

Page 267: ...rimary control cables 8 and 9 that are located in the fuselage the following procedure may be used 1 Remove the tunnel plate just aft of the tee bar by laying back enough tunnel carpet to remove the p...

Page 268: ...PIPER SENECA II SERVICE MANUAL V SURFACE CONTROLS 01 01 09 1G4 THIS PAGE INTENTIONALLY BLANK...

Page 269: ...19 44 3 2 0 r J c1t A102 31 L DETAIL A 18 28 32 Reissued 10 11 79 PIPER SENECA II SERVICE MANUAL 4 L 10 A 15 6 16 4 SKETCH A 2041 Figure 5 2 Aileron Controls SURFACE CONTROLS 1G5...

Page 270: ...12 PULLEYS 13 TURNBUCKLE CONTROi CHAINS 14 BOBWEIGHT ACTUATOR ROD 15 CABLE BALANCE LEFT 16 CONTROL ROD LEFT y SKETCH B 930 1 I COTTER PIN 1 7 CABLE CONTROL LEFT 18 BELLCRANK ASSY LEFT 19 BOLT ASSY 20...

Page 271: ...rimary control cables 8 and 9 that are located in the fuselage the following procedure may be used 1 Remove the tunnel plate just aft of the tee bar by laying back enough tunnel carpet to remove the p...

Page 272: ...PIPER SENECA II SERVICE MANUAL V SURFACE CONTROLS 01 01 09 1G4 THIS PAGE INTENTIONALLY BLANK...

Page 273: ...19 44 3 2 0 r J c1t A102 31 L DETAIL A 18 28 32 Reissued 10 11 79 PIPER SENECA II SERVICE MANUAL 4 L 10 A 15 6 16 4 SKETCH A 2041 Figure 5 2 Aileron Controls SURFACE CONTROLS 1G5...

Page 274: ...12 PULLEYS 13 TURNBUCKLE CONTROi CHAINS 14 BOBWEIGHT ACTUATOR ROD 15 CABLE BALANCE LEFT 16 CONTROL ROD LEFT y SKETCH B 930 1 I COTTER PIN 1 7 CABLE CONTROL LEFT 18 BELLCRANK ASSY LEFT 19 BOLT ASSY 20...

Page 275: ...of the wing forward of the aileron center hinge 4 Disconnect the cable from the aft end of the aileron bellcrank by removing the cotter pin nut washer and bolt 5 Draw the cable from the wing 5 8 INST...

Page 276: ...ted on the underside of the wing forward of the aileron center hinge c Relieve tension from the aileron control cables by loosening the balance cable turnbuckle 6 located in the floor opening aft of t...

Page 277: ...the wheel and tee bar in these positions Tee bar may be maintained in the full forward position by placing weights on the aft side of the stabilator if the stabilator cables have been previously tens...

Page 278: ...st the rigging tools finish with approximately even tension on all cables Primary cable tensions may be slightly less than balance cable tension but should be within the tension specified 4 Remove bel...

Page 279: ...and down and check the degree of travel for each direction The degree of travel on the protractor is determined by taking the difference between the protractor reading at neutral and up and neutral an...

Page 280: ...at the pulley cluster 4 in the aft area of the opening 5 Remove the tunnel plate just aft of the tee bar by removing enough carpet from the tunnel to allow the plate attachment screws and plate to be...

Page 281: ...949 2 6 STABILATOR CONTROL CABLE STABILATOR CONTROL CABLE 0 _ RUB BLOCK FAIRLEAD STABILATOR TRIM CABLE SKETCH A STABILATOR TRIM CABLE SKETCH B Figure 5 5 Stabilator and Stabilator Trim Controls Revise...

Page 282: ...9 8 PULLEY STA 261 458 PULLEY STA 276 991 TRIM SCREW ASSY CONTROL ROD PULLEYS STA 29 2 34 PULLEY STA 279 49 BALANCE ARM T 06 INITIAL SETTING I 0 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 2...

Page 283: ...cable to the stabilator balance arm and secure with bolt washer nut and cotter pin Ensure bushing is installed with bolt 3 Connect the aft cable to the forward cable at the turnbuckle 17 in the aft se...

Page 284: ...n be fabricated from dimensions given in Figure 5 18 3 Check the stabilator travel by placing a rigging tool on the upper surface of the stabilator as shown in Figure 5 6 4 Using a bubble protractor s...

Page 285: ...al adjust the stabilator tab pushrod to streamline the tab with the stabilator This is the neutral position of the tab 10 Check the full travel of the control wheel with relation to the full travel of...

Page 286: ...TRIM ASSEMBLY FORWARD Refer to Figure 5 5 a The trim control wheel with drum may be installed by the following procedure 1 Wrap the right trim cable on the trim drum by inserting the swaged ball of t...

Page 287: ...tall the aft floor tunnel and secure with screws 16 Install the heater duct and carpet over the aft floor tunnel c Install the panel to the aft section of the airplane and the seats 5 19 REMOVAL OF ST...

Page 288: ...ink assembly 29 then install the bolt assembly 23 and secure g Route the cable 16 around the pulleys at station 292 34 and forward to the turnbuckles 17 in the fuselage h Ascertain that the cables are...

Page 289: ...or out as required Reconnect the rod end to the link i Secure the jam nut 31 on the rod assembly j Turn the trim wheel to full travel and check for turnbuckle clearance and location of tab indicator k...

Page 290: ...Position the vee brace s 4 on the torque tube install the strap bracket 7 around the torque tube and brace and secure with bolts washers and nuts 8 g Connect the ends of the brake cylinder rods 31 and...

Page 291: ...13 TUBE LEFT CENTER 14 CLAMP BEARING SUPPORT 15 TUBE RIGHT OUTER 16 BEARING ASSEMBLY 17 WASHER SPACER 18 BRAKE PEDAL 19 RUDDER PEDAL 20 CLEVIS ROD 21 BOLT WASHER NUT 22 CONTROL CABLE RUDDER 23 BRACKET...

Page 292: ...right as required 7 Disconnect the end of the cable from the arm on the rudder pedal torque tube by removing the cotter pin nut washer and bolt Refer to Figure 5 8 8 Draw the cable from the floor tunn...

Page 293: ...ER SENECA II SERVICE MANUAL RUDDER CONTROL CABLES RUDDER CONTROL CABLES I _GUARDPIN SKETCH A RUDDER TRIM CABLES SKETCH B Figure 5 9 Rudder and Rudder Trim Controls Reissued 10 11 79 lHl SURFACE CONTRO...

Page 294: ...TOR ASSY TORQUE TUBE 14 PULLEYS STA 279 032 15 CABLE TRIM AFT 16 TURNBUCKLES 17 BUNGEE NOSE WHEEL CONTROL 18 ARM ASSY STEERING 19 MOUNTING BRACKET 20 BOLT ASSY 21 SUPPORT ASSY BARREL MOUNT 22 BARREL T...

Page 295: ...e cover and carpet of the aft floor tunnel b The aft rudder control cable 10 may be installed by the following procedure 1 Position the control cable in the fuselage with the swaged ball next to the r...

Page 296: ...dder pedals to swing the rudder 2 With the rudder against its stop place a rigging tool against the side of the rudder and vertical stabilizer as shown in Figure 5 10 Ascertain that the tool is not co...

Page 297: ...just the cables evenly to avoid uneven strain on aircraft components Neutral position can be determined by standing behind the airplane and sighting the rudder with the vertical stabilizer or the cent...

Page 298: ...PIPER SENECA II SERVICE MANUAL V SURFACE CONTROLS 01 01 09 1H4 THIS PAGE INTENTIONALLY BLANK...

Page 299: ...nting hardware 4 Disconnect the turnbuckles 16 and remove the guard plate see Sketch C at pulley cluster 8 5 Remove the rub block see Sketch B at pulley cluster 6 6 Remove the nut washers and bolt sec...

Page 300: ...ter duct and carpet 12 Install the carpet over the aft floor plate c Install the panel to the aft section of the fuselage and the seats 5 32 REMOVAL OF RUDDER TRIM CONTROLS AFn Refer to Figure 5 9 a R...

Page 301: ...TRIM TAB TRAILING EDGE MOVES LEFT WHEN THE RUDDER TRIM WHEEL IS TRIMMED NOSE RIGHT a The following items must be accomplished as a preadjustment check before proceeding with the rigging and adjustmen...

Page 302: ...ted replace existing bolt with a new Clevis Bolt AN23 11 P N 400 673 4 Re install hardware ensuring a bushing P N 63900 174 is in the flap handle lever bolt hole If bolt hole has not previously been e...

Page 303: ...M NUT 13 ROD FLAP CONTROL 14 FITTING TORQUE TUBE STOP 15 SCREW FLAP ADJUSTMENT 16 BOLT WASHER BUSHING 17 CRANK ARM TORQUE TUBE 18 SPRING RETURN 19 BRACKET BEARING BLOCK 20 CHAIN TENSION SPRING 9 21 CL...

Page 304: ...unnel cover that is between the flap handle and the spar cover Remove the cover 8 Remove the cotter pin cable guard from the flap cable pulley 26 located inside the floor tunnel just ahead of the spar...

Page 305: ...d through a hole in the side of the fuselage located over the torque tube b To install the flap handle 30 with bracket 29 place the assembly on the floor tunnel and secure with bolts c The flap contro...

Page 306: ...ht torque tube stop screw located in the floor opening along the outer end of the flap torque tube and turn the stop screw to obtain approximately 0 60 of an inch between the stop fitting and the bear...

Page 307: ...e wing contacts the tool at its forward surface and at the spacer and the aft end of the flap contacts the aft end of the tool The flap is neutral at this position i Should the three points not contac...

Page 308: ...or evidence of distortion a If the paint is cracked or peeling anywhere along the torque tube arm or pushrod torsional movement has occurred b Remove the paint and inspect for cracks 1 In the welds at...

Page 309: ...A II SERVICE MANUAL A291 MATERIAL 125 X 3 750 X 1 0 ALUM PLATE 062 R TYP 3 750 t 125 625 1 0 l l 1 J_ r 3 130 62 250 Figure 5 16 Fabricated Aileron Bellcrank Rigging Tool Reissued 10 11 79 1H13 SURFAC...

Page 310: ...I I I I I I I I I I I I I I 375 Ht 750 4 It SEE NOTE l l NOTE I I I I I I I I I I I I I I 31 50 l DRILL AND TAP TO 1 4 28 NF SOLT AND FILE TO REQUIRED LENGTH 13 250 Figure 5 17 Fabricated Aileron and...

Page 311: ...INE STABILATOR CONTOUR I 4 5 _____ I _ ___ l 27 45 24 02 20 59 17 17 13 74 BASE LINE MATERIAL 1 0 X 28 45 X 4 5 ALUM BAR 10 31 6 88 45 88 1 74 2 59 3 45 5 16 1 0 LEADING EDGE Figure 5 18 Fabricated St...

Page 312: ...65 PIPER SENECA II SERVICE MANUAL 16 5 12 5 t 8 5 56 43 TRAILING EDGE OF FIN 26 HINGE LINE 70 15 45 4 5 l 14 45 _ _ ___ BASE LINE I USE AT ROOT RIB j_ ____ _ _ _ _ __ J Figure 5 19 Fabricated Rudder R...

Page 313: ...te system wheel rotation properly Cable tension too high Adjust cable tension Refer to Paragraph 5 11 Control column hori Adjust chain tension zontal chain improperly Refer to Paragraph adjusted 5 5 P...

Page 314: ...cordance travel not adjusted properly with Paragraph 5 11 Aileron bellcrank stops Adjust in accordance not adjusted properly with Paragraph 5 11 Correct aileron travel Incorrect rigging of Rig in acco...

Page 315: ...system control movement properly Cable tension too high Adjust cable tension per Paragraph 5 15 Binding control column Adjust and lubricate per Paragraph 5 5 Pulleys binding or Replace binding pulley...

Page 316: ...inkage loose or worn System not lubricated properly Cable tension too high Pulleys binding or rubbing Cables not in place on pulleys Trim tab hinge binding Cables crossed or routed incorrectly 1H20 Re...

Page 317: ...usted properly with Paragraph 5 21 trim position RUDDER CONTROL SYSTEM Lost motion between Cable tension too low Adjust cable tension rudder pedals and per Paragraph 5 28 rudder Linkage loose or worn...

Page 318: ...op incorrectly adjusted Nose wheel contacts stops before rudder RUDDER TRIM CONTROL SYSTEM Cable tension too low Cables not in place on pulleys Broken pulley Linkage loose or worn 1H22 Remedy Replace...

Page 319: ...ll cables according pulleys to Paragraphs 5 31 and 5 33 Trim tab hinge binding Lubricate hinge Replace if necessary Cables crossed or Check routing of control routed incorrectly cables Trim tab fails...

Page 320: ...ROL SYSTEM Flaps fail to extend Control cable broken Replace or reconnect or retract or disconnected control cable Refer to Paragraph 5 37 Flaps not synchro Incorrect rigging Adjust flaps per in nized...

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Page 322: ...PIPER SENECA II SERVICE MANUAL V SURFACE CONTROLS 01 01 09 1H26 END OF SECTION...

Page 323: ...PIPER SENECA II SERVICE MANUAL 1I1 SECTION VI HYDRAULIC SYSTEM...

Page 324: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 1I2...

Page 325: ...Repair 1I15 6 13 Removal 1I15 6 14 Installation 1I15 6 15 Gear Actuating Cylinder 1I15 6 16 Removal of Nose Gear Actuating Cylinder 1I15 6 17 Removal of Main Gear Actuating Cylinder 1I16 6 18 Disassem...

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Page 327: ...ines serve either as pressure or return passages depending on the rotation of the pump to retract or extend the gear A pressure switch is mounted on the pressure line in the right aft side of the nose...

Page 328: ...O UNLOCK THE DOWNLOCK MECHANISM ALLOWING THE GEAR TO COLLAPSE WHEN THE WING JACKS ARE REMOVED PRIOR TO REMOVING THE AIRPLANE FROM JACKS PUSH THE FREE FALL VALVE KNOB IN TURN ON THE MASTER SWITCH AND S...

Page 329: ...vice of the Oildyne hydraulic pump is limited to motor replacement and removal cleaning inspection and or replacement of the hydraulic fluid reservoir Should pump malfunction replace pump or return pu...

Page 330: ...PIPER SENECA II SERVICE MANUAL VI HYDRAULIC SYSTEM 01 01 09 1I4 THIS PAGE INTENTIONALLY BLANK...

Page 331: ...RIAL NOS NOSE GEAR HYDRAULIC CYLINDER UP DOWN 34 757001 TO 34 7770148 INCL _ _ LEFT MAIN GEAR H YDRA ULIC CYLINDER UP DOWN 1 r 0 1 f HPRESSURE SWITCH RESTR ICTOR 0 4 1 FREE FALL CONTROL OFF 1800 100 P...

Page 332: ...HYDRAULIC SYSTEM GEAR SHOWN DOWN CHECK VALVE RETRACTION RELIEF 2350 50 PSI RESTRICTOR NOSE GEAR HYDRAULIC CYLINDER UP t DOWN 020 Diameter BLEED HOLE LEFT MAIN GEAR HYDRAULIC CYLINDER UP t DOWN 0 r 1 r...

Page 333: ...alve cut safety wire and remove bolt spring and steel ball Replace O ring at reassembly b Pump Motor The pump motor may be removed from the pump and disassembled as follows 1 Remove thru bolts 4 from...

Page 334: ...EFT MAIN GEAR HYDRAULIC CYLINDER 3 FREE FALL CONTROL 4 PRESSURE SWITCH S FREE FALL VALVE 6 NOSE GEAR HYDRAULIC CYLINDER 7 HYD RAULIC PUMP 8 THERMAL RELIEF VALVE ON 0 ONLY A342 I Figure 6 2 Hydraulic S...

Page 335: ...ded wire is in the holder slot for proper brush movement 6 Install the head assembly with new brushes to the frame and commutator in accordance with instructions given in Paragraph 6 8 Step a 6 8 ASSE...

Page 336: ...ching bolts with washers and torque to 70 inch pounds 3 Safety attaching bolts with MS20995 C32 wire d Conduct motor operational check not to exceed 10 seconds running time 6 9 TEST AND ADJUSTMENT Ref...

Page 337: ...SYSTEM 1I11 2024 2 3 1 HEAO MOTOR 2 SPRING BRUSH 3 BRUSH 4 SOLT TH ROUGH 5 0 RING MS28775 012 6 WIRE LEAC 7 BALL TH RUST 8 ARMATURE 9 FRAME MOTOR 10 SLEEVE 11 WASHER THRUST 12 SCREW VENT AND FILLER 1...

Page 338: ...rdingly to obtain the desired reading NOTE When increasing pressure the pump running time must not exceed 12 seconds There should be no external leakage while performing Steps 5 thru 8 7 Disconnect bl...

Page 339: ...Negative ground Negative ground Operating Current 75 amps max at 12 volts 25 amps max at 12 DC both rotations volts both rotations Operating Time 12 seconds max with a current Continuous with circuit...

Page 340: ...Test and Adjustments of Hydraulic Pump Original Equipment Prestolite VI HYDRAULIC SYSTEM 01 01 09 1I14 A369 0 0 0 HIGH PRESSURE PORT 11 1 14 V D C ONE ONLY G LO BL 100 AMP FUSE 14 v o c GROUND BLACK...

Page 341: ...3 bottom washers 7 and shelf 4 Mount nut 8 and washer 5 on bolt and tighten c Connect hydraulic lines to pump d Connect pump electrical leads Blue wire to outboard lower solenoid green wire in inboar...

Page 342: ...washers securing pump mount to deck f Lift assembly from airplane 2 Installation a Position assembled pump bracket and pump mount on pump deck in airplane b Secure pump assembly to deck by installing...

Page 343: ...assembly to bracket d Safety bolts with MS20995 C41 wire d Replacing Hydraulic Pump Motor See In Aircraft above to remove install pump in aircraft 1 Disassembly a Remove two each mounting bolts on fl...

Page 344: ...RAULIC SYSTEM 01 01 09 1I14D 11 5 H 12 s 1 VIEWA 3 PLACES 1 MOTOR ASSEMBLY 2 BASIC PUMP ADAPTER 3 RESERVOIR ASSEMBLY 4 BRACKET MOUNTING 5 BASE PUMP 6 RESTRICTOR ELBOW PIPER P N 01970 2 7 BOLT 3 EA 8 W...

Page 345: ...6 5a Hydraulic Pump Oildyne Sheet 2 of 2 01 01 09 VI HYDRAULIC SYSTEM 1I14E CAUTION AFTER FILLING RESERVOIR TIGHTEN DIPSTICK THEN BACKOFF 1 1 2 TURNS THIS IS REQUIRED TO ALLOW RESERVOIR TO BE VENTED...

Page 346: ...n pad It will have to be bonded to the new reservoir base using Scotch Grip 2210 or Contact Adhesive B 10161 rubber cement 2 Assembly a Locate the cushion pad and bond it to the bottom surface of the...

Page 347: ...reassembly Remove fittings and two bolts securing the valve to the bracket 6 14 INSTALLATION Refer to Figure 6 6 a Apply Loctite No 567 PST Sealant or equivalent to MALE threads of elbows and tees an...

Page 348: ...cylinder and cover open line ends to prevent contamination c Disconnect gear downlock spring from swivel fitting at upper end of spring d Remove downlock spring swivel fitting and disconnect cylinder...

Page 349: ...RINGS IN ROD END SKETCH C CROSS SECTION OF INSTALLED T RING ASSEMBLY SKETCH E INSTALLATION OF SEALING RING ON PISTON SKETCH B INSTALLATION OF NON EXTRUSION RINGS ON PISTON SKETCH D PROPER MATING OF S...

Page 350: ...r body 7 Reverse rotation of gland clockwise direction allowing retainer ring to move out of slot It may be necessary to give the ring an assist in starting out of the slot If so insert a strong wire...

Page 351: ...en installed Refer to Sketch E c Insert one end of the non extrusion ring formed by the scarf cut into the space between the side of the groove and the side of the seal Refer to Sketch E d Work the en...

Page 352: ...en installed Refer to Sketch E c Insert one end of the non extrusion ring formed by the scarf cut into the space between the side of the groove and the side of the seal Refer to Sketch E d Work the en...

Page 353: ...ctive fittings on the actuating cylinder d Check adjustment of cylinder rod end Refer to Adjustment of Nose Landing Gear Section VII e Operate pump to purge system of air and check fluid level in rese...

Page 354: ...ld light up until the gear is fully retracted The hydraulic pump should stop operating after full retraction of the gear c Place gear selector handle in DOWN position The gear should extend and lock i...

Page 355: ...roken Safety squat switch Readjust switch Refer out of adjustment to Adjustment of Safety Switch Section VII Squat switch inoperative Replace switch Pressure switch in Replace switch operative Pump re...

Page 356: ...verhaul system fails to operate erative pump cont Hydraulic fluid in Fill reservoir with reservoir below oper hydraulic fluid ating level Battery low or dead Check condition of battery Check for intem...

Page 357: ...cuit breaker open and determine cause for open circuit breaker Landing gear actuator Check wiring circuit wires broken Landing gear selector Check wiring circuit wires broken Pump extension solenoid R...

Page 358: ...ydraulic fluid in Fill reservoir with extremely slow reservoir below oper hydraulic fluid ating level Restriction in hydraulic Isolate and check lines hydraulic lines Pump stops during gear Landing ge...

Page 359: ...ff Pressure switch inop Replace switch though gear has fully erative retracted Pressure switch out of Replace switch adjustment Pump retraction solenoid Replace solenoid sticking inboard sole noid Int...

Page 360: ...itch Refer switch out of adjust to Adjustment of Main ment Gear Down Limit Switch Section VII Main gear down limit Replace switch switch failed NOTE The out of adjustment or failed switch may be deter...

Page 361: ...ef valve out of to run adjustment Internal leakage of Check gear actuating cyl system inders and free fall valve for internal leakage Check for broken or damaged hydraulic lines Hydraulic fluid in Fil...

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Page 363: ...PIPER SENECA II SERVICE MANUAL END OF SECTION VI HYDRAULIC SYSTEM 01 01 09 1J4B...

Page 364: ...PIPER SENECA II SERVICE MANUAL 1J4C SECTION VII LANDING GEAR AND BRAKE SYSTEM...

Page 365: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 1J4D...

Page 366: ...ssembly 1K2 7 13a Cleaning Inspection and Repair 1K2 7 14 Removal 1K2 7 15 Installation 1K3 7 16 Adjustment 1K3 7 17 Main Gear Oleo 1K3 7 18 Inspection 1K3 7 19 Disassembly 1K4 7 20 Assembly 1K4 7 20a...

Page 367: ...n System 1L1 7 41 Wheels 1L4 7 42 Removal and Disassembly of Nose Wheel 1L4 7 43 Inspection of Nose Wheel Assembly 1L4 7 44 Assembly and Installation of Nose Wheel 1L4 7 45 Removal and Disassembly of...

Page 368: ...ring maintains pressure on each hook in the locked position until released by hydraulic pressure In the event the airplane is sitting on the ground and the gear selector knob is in the UP position a s...

Page 369: ...removed and disassembled from the trunnion assembly with the gear removed from or installed in the airplane NOTE Prior to proceeding with instructions contained in this section the airplane must be pl...

Page 370: ...VALVE 14 CORE AIR VALVE 15 BODY AIR VALVE 16 WASHER 17 BUSHING SHOULDER UPPER 18 SCREW WASHER AND NUT 19 ROLLER ASSY AND BUSHING 20 TILLER 21 DELETED 22 BUSHING SHOULDER LOWER 23 TRUNNION ASSY 24 PLAC...

Page 371: ...PIPER SENECA II SERVICE MANUAL VII LANDING GEAR AND BRAKE SYSTEM 04 30 07 1J10 Figure 7 1 Nose Gear Oleo Strut Assembly Sheet 2 of 2 1884 _ 21 o _ J a J n HiW 38...

Page 372: ...VICE MANUAL 01 01 09 VII LANDING GEAR AND BRAKE SYSTEM 1J11 Figure 7 1A Nose Gear Service Tolerances DETAIL A LOOKING UP 8 11 r Q c 2 I i i I I lo l SEE TABLE Vll 1 FOR LEGEND SEE ALSO FIGURE 7 2b 319...

Page 373: ...0005 7 95061 89 Bushing 189 004 8 95061 28 Bushing 252 Note 4 004 250 9 452 334 Bungee Bolt Hole PS10020 1 6RX Bearing 1900 0015 0005 10 95061 20 Bushing O D 312 x 058 004 11 95061 24 Bushing O D 312...

Page 374: ...the oleo cylinder into the trunnion assembly 23 The base of the trunnion must seat firmly on the lower shoulder bushing k Carefully insert the upper shoulder bushing 17 between the oleo cylinder and t...

Page 375: ...o steel and a recent change adding reinforcements to increase the bearing surfaces for the P N 95061 089 bushing In S N s 34 7570001 through 34 7570050 with aluminum bracket visually inspect the alumi...

Page 376: ...onnections or conditions which could lead to failures b Service Wear Limits Use the wear limits in Figure 7 2b to determine the condition of the listed parts when performing the following inspections...

Page 377: ...ND BRAKE SYSTEM 04 30 07 1J16 Figure 7 2 Nose Gear Installation Sheet 1 of 2 3046 24 J TORQUE 50 70 IN LBS 46 Replace bolt each 500 hours see Airworthiness Limitations Section I AN960 716L AN320 7 MS2...

Page 378: ...SEMBLY 27 SPLASH SHIELD MOUNTING CLAMP 28 GREASE FITTING 29 HARDWARE TILLER OLEO ATTACHMENT 30 TILLER ASSEMBLY 31 CHANNEL STEERING ARM 32 STEERING ARM ASSEMBLY 33 STEERING ROD 2 34 JAM NUT 35 LINK ASS...

Page 379: ...llows for overcenter measurement NOTE The standard overcenter dimension is measured from the centerlines of the drag link mounting holes When measuring off the bolts the different bolt sizes must be t...

Page 380: ...ints making certain the tiller roller is properly inserted in the steering arm channel b Align the mounting points of the strut with those on the mount and install the appropriate hardware The bolt he...

Page 381: ...LER RIGGING TRACK 0 03 IN MINIMUM GAP AT FULL UH R H STOPS f lllllt J DOWN LOCK LINK ASSY BOLT NAS464 P620 WASHER AN960 616 NUT AN320 6 COTTER PIN MS244665 283 TILLER TRACK STEERING ARM ASSY BOLT AN5...

Page 382: ...Upper Bushing 0 562 0 564 2 Drag Link Center Bushino 0 375 0 377 3 Drag Link Lower Bushino 0 438 0 442 4 Trunnion Pivot Bushinos 0 500 0 503 5 Steering Arm Center Pivot 0 375 0 377 Bushings 6 Steerin...

Page 383: ...Installation Inspection t INSPECT 11 RIVETS I TUNNEL INSPECT 4 RIVETS 90 TUNNEL BRACKET P N 95554 000 350 NOSE GEAR MOUNT FITTING P N 95555 000 INSPECT FLANGE RADIUS FOR CRACKS BULKHEAD F S 49 5 INSPE...

Page 384: ...CE MANUAL 04 30 07 VII LANDING GEAR AND BRAKE SYSTEM 1J23 Figure 7 2d Nose Gear Trunnion Inspection See Detail View 11 A11 Typical Both Sides weld Area I Pay particular attention to these View 11 A11...

Page 385: ...when the gear contacts the stop Following this adjust the switch upward another 0 02 to 0 04 of an inch p Support the gear in its up locked position and adjust the rod end of the actuator piston rod...

Page 386: ...ee is 13 71 inches To align the nose wheel straight forward stand in front of the nose gear and align the center rib of the tire with the chalk line or lay a straightedge along the side of the tire an...

Page 387: ...s to doors are limited to replacing hinges and brackets g Repairs to the retraction mechanism are limited to painting and replacement of component parts 7 14 REMOVAL Refer to Figure 7 2 a With nose ge...

Page 388: ...Adjust both retraction rods 18 to obtain a dimension of 9 15 inches as shown Attach upper end of retraction rod to arm of upper actuation tube assembly The lower end should be attached to the door bra...

Page 389: ...the annular slot at the bottom of the oleo housing g Pull piston tube 25 with component parts from cylinder housing h The piston tube 25 components may be removed by reaching in the tube and pushing...

Page 390: ...ssemblies 2 3 and 4 should be lubricated and installed with the flat of the bolt head hex adjacent to the milled stop of the wide end of the link Use the same thickness of spacer washers between the t...

Page 391: ...ER PIN 5 AXLE NUT 6 NUT 7 WASHER 8 RETAINER 9 O RING 10 VALVE ASSEMBLY 11 TRUNNION ASSEMBLY 12 ORIFICE TUBE 13 PLATE 1 ORIFICE 14 SNAP HING 15 LINK ASSEMBLX UPPER 16 LINK ASSEMBLY LOWER 17 RETAINER PI...

Page 392: ...PIPER SENECA II SERVICE MANUAL 04 30 07 VII LANDING GEAR AND BRAKE SYSTEM 1K7 Figure 7 5 Main Gear Oleo Strut Assembly Sheet 2 of 2 1961B...

Page 393: ...PIPER SENECA II SERVICE MANUAL VII LANDING GEAR AND BRAKE SYSTEM 04 30 07 1K8 Figure 7 5a Main Gear Service Tolerances 7 9 4 SEE TABLE VII II i...

Page 394: ...14175 103 Main Gear Truss 161 0 No Assy Bushing Rotation 5 452 368 Rod End Lower 50 0015 50 003 0035 34 7670324 HFX 8G Side Brace Link 0005 0005 and below or 78722 02 Rod End Lower 34 7670325 Side Br...

Page 395: ...of each hook 4 Check the general condition of each limit switch and its actuator and wiring for fraying poor connections or conditions that may lead to failures 5 Check side brace link through center...

Page 396: ...ion each 100 hours between 500 and 2000 hours time in service and each ten 10 hours between 2000 and 2500 hours time in service NOTE Installation of main gear trunnion assemblies P N s 67926 030 67926...

Page 397: ...D BRAKE SYSTEM 04 30 07 1K12 Figure 7 5b Main Gear Trunnion Inspection RIGHT SIDE TRUNNIONS SHOWN INSPECT FOR CRACKS USING A SUITABLE DYE PENETRANT INSPECTION METHOD _ _ r o I I I I I I EARLY MODELS N...

Page 398: ...connect gear door actuating rod 38 at the gear housing 3 Remove access plate located on underside of wing aft of landing gear 4 If not previously disconnected disconnect lower side brace link 33 from...

Page 399: ...AN 37239 AM TORQUE NUTS SOTO 70 IN LBS I I 40 NC TE IT MAY HAVE BEEN NECESSARY TO USE SPECIAL LANDING GEAR ATTACHMENT HARDWARE DURING ASSEMBLY OF THE AIRCRAFT DUE TO MANUFACTURING TOLERANCES THEREFORE...

Page 400: ...OCK SPRING 35 SWITCH SAFETY 36 ACTUATOR SAFETY SWITCH 37 BOLT WASHERS NUT AND COTTER PIN 38 ROD GEAR DOOR CONNECTING 39 BOLT WASHERS NUT AND COTTER PIN 40 FORK GEAR STRUT ASSEMBLY 41 CLAMP SUPPORT FOR...

Page 401: ...e with bolt 48 Torque per Figure 7 6 6 Check that the gear rotates freely in its support fittings and recheck thrust 7 Connect the brake line to its mating line in the wheel well and bleed brakes as e...

Page 402: ...djusted in the up position to allow the gear fork to press lightly into the rubber bumper pad on the wing The adjustment may be accomplished as follows NOTE If it requires less than 125 of an inch to...

Page 403: ...PIPER SENECA II SERVICE MANUAL VII LANDING GEAR AND BRAKE SYSTEM 04 30 07 1K18 Figure 7 7 Aligning Main Gear SKETCH A BRACKET SKETCH B...

Page 404: ...FITTINGS HARDWARE REPLACEMENT Number in parentheses refer to Item s in Figure 7 6 Likewise hardware callouts e g bolts washers and nuts refer to hardware specified in Figure 7 6 NOTE Replacement of a...

Page 405: ...already reamed to 312 inch To accurately align the fitting with the existing holes wrap the grip of the old AN4 attach bolts with 032 brass safety wire to act as a temporary bushing 3 Temporarily inst...

Page 406: ...er washers have been removed and it is still necessary to move the wheel further in or out then it will be necessary to turn the torque link assembly over Refer to Figure 7 8 This will put the link co...

Page 407: ...0 416 3 14 0 33 AN960 416 AN960 416 AN960 416 2 14 0 48 AN960 416L AN960 416 AN960 416 14 AN960 416 1 04 AN960 416 2 AN960 416 AN960 416 14 1 19 AN960 416L AN960 416L AN960 416 14 AN960 416 2 1 35 AN9...

Page 408: ...ositioning the hinge halves of the door and wing and inserting the hinge pin It is recommended a new pin be used Bend the end of the pin to secure in place b Install the door retraction rod by positio...

Page 409: ...F c Block the nose gear in the up position and slowly pull the free fall knob away from the instrument panel This will relieve hydraulic pressure and permit the main gear to drop d Loosen the attachme...

Page 410: ...cket attached to the lower drag link of each main gear The switch should be adjusted to allow it to actuate when the downlock hook has entered the locked position and is within 025 to 035 inch of cont...

Page 411: ...t Secure the switch c Extend and then compress the strut to ascertain the switches will actuate within the last quarter inch of oleo extension 7 36 LANDING GEAR WARNING SWITCH THROTTLE SWITCH 7 37 LAN...

Page 412: ...throttle levers at the location which gave the 14 2 inches of manifold pressure per Step a d With the master switch turned on loosen the two mounting screws securing the micro switch to the bracket Mo...

Page 413: ...PIPER SENECA II SERVICE MANUAL VII LANDING GEAR AND BRAKE SYSTEM 01 01 09 1K26 THIS PAGE INTENTIONALLY BLANK...

Page 414: ...hts are off 2 Red gear unsafe light is on 3 Gear warning horn sounds 4 All gear retract fully and nose gear doors close 5 Pump motor stops operating 6 Landing light extinguished 7 Heater fan turns off...

Page 415: ...3 Red unsafe light remains on 4 Gear warning horn sounds s Move throttles to mid travel position t Ensure that 1 Red unsafe light stays on 2 Gear warning horn continues to sound u Place gear selector...

Page 416: ...eturns to the down and locked position in 15 seconds or less 3 Pump motor stops operating after all gear are in the down and locked position 4 The three green safe lights are on 5 The red unsafe light...

Page 417: ...Check tire for cuts internal bruises and deterioration e Check bearing cones and cups for wear and pitting then relubricate f Replace any wheel casting having visible cracks 7 44 ASSEMBLY AND INSTALLA...

Page 418: ...ith tire deflated remove bolts 9 Pull wheel halves from tire by first removing inner half from the tire then the outer half e Wheel bearing assemblies may be removed from each wheel half by removing s...

Page 419: ...heel balance c Install the tire and tube on the wheel half with the valve stem hole inserting the valve stem through the valve hole d Place the opposite wheel half inside the tire Align the wheel bolt...

Page 420: ...cting low air pressure in the cylinder fluid inlet forcing the pistons from the housing f Check anchor bolts for wear g The following procedure should be used when removing anchor bolts 1 Position cyl...

Page 421: ...que to 75 90 in lbs 2 Dry torque to 90 in lbs 11 30 65 30 83 7 11 BOLT ANCHOR 12 WASHER 13 NUT 1 BRAKE CYLINDER 14 BOLT BACK PLATE 2 PISTON 15 BLEEDER SEAT 3 O RING TORQUE 75 90 IN LBS 4 PRESSURE PLAT...

Page 422: ...EAR AND BRAKE SYSTEM 1L9 Figure 7 15 Removal and Installation of Anchor Bolts REMOVAL INSTALLATION CYLINDER BODY ANCHOR BOLT STEPA HOLDING FIXTURE HOLDING FIXTURE STEPC PRESS ANCHOR BOLT HOLDING FIXTU...

Page 423: ...use for immediate replacement f The riveted type lining may be removed from the backing plates by drilling out the old rivets using a 5 32 drill Install a new set of linings using the proper rivets an...

Page 424: ...n 12 Remove clevis pin and spacer washers d Disconnect the base of the cylinder from its mounting bracket by removing bolt assembly 11 e The handle assembly 6 may be removed by removing attachment bol...

Page 425: ...OTTER PIN 5 CLEVIS ASSEMBLY 6 CLEVIS PIN 7 ARM IDLER 8 NUT 9 CLEVIS PIN WASHER COTTER PIN 10 CLEVIS PIN WASHER COTTER PIN 11 SPRING RETURN 1966 J BRAKE RESERVOIR 2 RIGHT BRAKE ANO RUDDER PEDAL l LEFT...

Page 426: ...g 2 d Insert piston rod assembly into cylinder 1 and secure packing gland with snap ring 11 e Install cylinder as explained in Paragraph 7 59 7 59 INSTALLATION Refer to Figure 7 17 a Install brake han...

Page 427: ...seal 5 and packing gland 7 and if desired the large return spring 11 4 Remove the O rings from the piston and packing gland c Cleveland cylinder number 10 30 Refer to Figure 7 20 1 Remove the cylinder...

Page 428: ...tall on the rod 12 in order the roll pin 14 washer 13 spring 11 washer 9 packing gland 7 with O rings seal 5 piston assembly 3 with O rings spring 2 and roll pin 15 3 Insert the piston rod assembly in...

Page 429: ...C578 C579 1 HOUSING 2 RETAINING RING 3 SLEEVE 5 0 RING PISTON 7 SE AL 9 O RING 13 WASHER 10 Q RING 14 ROLL PIN 11 SPRING 4 SPRING 8 FITTING 12 PISTON ROD 2 3 4 5 6 7 8 910 1 HOUSING 6 0 RING 2 SPRING...

Page 430: ...from the pedal connection by removing clevis pin washer and cotter pin d Invert toe brake cylinder to aid in releasing trapped air in the top of the cylinder e Check toe brake pedals in the cockpit t...

Page 431: ...lly or even above horizontal and by use of the hand brake alone purge the air from the system d Close the open bleeder fitting on the gear being bled Close the open bleeder fitting to which the pressu...

Page 432: ...PIPER SENECA II SERVICE MANUAL 04 30 07 VII LANDING GEAR AND BRAKE SYSTEM 1L19 Figure 7 21 Brake Reservoir Figure 7 22 Bleeding Brake...

Page 433: ...control Reset circuit breaker and fail to operate when throttle is circuit breaker open determine cause for open near closed and landing gear circuit breaker is retracted Micro switch at throttle Adju...

Page 434: ...on nose tire pressure pressure Wear resulting from Refer to previous remedy shimmy for correction Nose gear fails to Oleo cylinder binding Lubricate strut housing steer properly in strut housing Refer...

Page 435: ...eck the attachment holes for distortion or enlargement Replace on condition Retraction link retention spring Inspect the retraction link worn out retention spring for end wear and general condition Us...

Page 436: ...wheel bearings Worn torque link bolts Replace bolts and or and or bushings bushings Excessive or uneven Incorrect operating Inflate tire to correct wear on main tires pressure pressure Wheel out of a...

Page 437: ...PIPER SENECA II SERVICE MANUAL VII LANDING GEAR AND BRAKE SYSTEM 01 01 09 1L24 PAGES 1L24 THRU 2A6 INTENTIONALLY BLANK...

Page 438: ...PIPER SENECA II SERVICE MANUAL 2A7 SECTION VIII POWER PLANT...

Page 439: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 2A8...

Page 440: ...Installation of Propeller Governor 2A19 8 18 Rigging and Adjustment of Propeller Governor 2A19 8 19 Engine 2A22 8 20 Removal of Engine 2A22 8 21 Installation of Engine 2A25 8 22 Engine Shock Mounts 2A...

Page 441: ...7 Installation of Spark Plugs 2C5 8 48 Lubrication System 2C5 8 49 Description 2C5 8 50 Oil Filter Replacement 2C6 8 51 Engine Fuel System 2C7 8 52 Description 2C7 8 53 Fuel Injection System Maintenan...

Page 442: ...per reinstallation and or assembly TAG and mark all parts clip and brackets as to their location prior to their removal and or disassembly b During removal of various tubes or engine parts inspect the...

Page 443: ...edure for removing the engine cowling is the same for both engines a Release the fasteners securing the two side access panels b Remove the fasteners securing the top cowl and then remove the top cowl...

Page 444: ...ement and continue to move the control down until the lock stops the travel of the control To raise the cowl flaps reverse the procedure The cowl flaps should be adjusted as follows a Place the contro...

Page 445: ...ER 3 OIL FILLER DOOR 4 TOP PANEL 5 SIDE PANEL 6 ACCESS HOLE F NGINE OIL DRAIN 7 BOTTOM COWL Figure 8 1 Engine Cowling Installation 1 COWL FLAP ASSEMBLY 2 CONTROL CABLE 3 ROD ASSEMBLY 4 TRUNNION ASSEMB...

Page 446: ...ub parts for cracks d Steel hub parts should not be permitted to rust Use aluminum paint to touch up if necessary or replate them during overhaul e Check all visible parts for wear and safety f Check...

Page 447: ...D AFT 6 O RING 7 MOUNTING NUT PROPELLER 8 SCREW SPINNER ATTACHMENT 9 AIR VALVE 10 CAP AIR VALVE 11 LOW PITCH ADJUSTMENT 12 PROPELLER R DOME 13 BOLT BULKHEAD 14 ENGINE FLANGE 15 BLADE PROPELLER 16 COUN...

Page 448: ...ount the propeller so that the dowel pin is between two blades and in the index hole closest to the upper crankcase split line Torque the nuts per the decal installed on the hub or McCauley Service Bu...

Page 449: ...S N 34 797000 I Inclusive and up io 81 to 83 56 2575 RPM max 20 22 foot pounds 60 70 foot pounds 35 40 inch pounds 2 ON PROPELLER HUBS WITH SERIAL NUMBERS PRIOR TO AN3943 EITHER SETTING IS APPROPRIATE...

Page 450: ...er the mounting pad to prevent foreign material from entering the engine 8 17 INSTALLATION OF PROPELLER GOVERNOR a Clean the mounting pad and the governor drive shaft thoroughly b Coat the mounting ga...

Page 451: ...ete the control system should be adjusted so that the governor control arm will contact the high RPM stop when the cockpit control knob is 032 to 047 of an inch from its full forward stop To adjust th...

Page 452: ...360 EB I TSIO 360 E or TSIO 360 EB 1 Spark Plugs Shielded Torque Alternator Starter Engine Dry Weight With Accessories Turbocharger TSIO 360E l A or TSI0 360 EB l LTSIO 360E 1A or LTSI0 360 EB l E9CE...

Page 453: ...covered to prevent contamination m Disconnect the magneto P leads at the magnetos n Disconnect the engine vent tube at the engine o Disconnect the engine oil temperature lead at the aft end of the en...

Page 454: ...LD 21 TAIL PIPE 9 OIL FILLER 22 OIL VENT 10 LEFT MAGNETO 23 EXHAUST BYPASS 11 OIL PUMP 24 ALTERNATOR 12 PRESSURE PUMP 25 OIL FILTER 13 RIGHT MAGNETO 26 ALTERNATOR COOLING 31 ROCKER COVERS 14 STARTER 2...

Page 455: ...NUT MS20365 720CI TORQUE TO 450 500 IN LBS VIEWA SHOCK MOUNT BOLT AN6 1 0A WASHER AN960 61 6 NUT PS 10062 8 624C TORQUE TO 240 270 IN LBS BOLT AN6 1 0A mu ll 4 WASHER AN960 616 VIEWB NUT PS 10062 8 62...

Page 456: ...conditioning compressor lines if compressor is installed j Install the propeller and spinner per Paragraph 8 13 k Service the engine with the proper grade and quantity of oil refer to Section II l Be...

Page 457: ...PIPER SENECA II SERVICE MANUAL VIII POWER PLANT 01 01 09 2A26 THIS PAGE INTENTIONALLY BLANK...

Page 458: ...proceed as follows 1 Place a drip pan below the inspection holes in each engine mount tube 2 Insert a plastic tube thru each inspection hole and feed it up to the high point of the engine mount tube 3...

Page 459: ...an ambient conditions Supercharger A device that accomplishes the increase in pressure Turbo supercharger More commonly referred to as a Turbocharger this device is driven by a turbine The turbine is...

Page 460: ...harger inertia This is a term used in conjunction with turbo machinery If you were to take all the air coming from a turbocharger compressor and duct it di rectly back into the turbine of the turbocha...

Page 461: ...ket and secure with mounting hardware b Align the exhaust system with the turbo inlet and secure with clamp c Position the exhaust tail pipe and waste gate assembly to the turbocharger outlet Fasten t...

Page 462: ...SSOR Al R DISCHARGE OVER BOOST SAFETY VALVE Reissued 10 11 79 PIPER SENECA II SERVICE MANUAL EXHAUST INLET 0 0 Figure 8 7 Schematic Diagram of Turbocharger System 2B5 2043 TAIL PIPE l AMBIENT AIR TURB...

Page 463: ...7a V BAND COUPLING 100 HOUR INSPECTION Refer to Figure 8 8a V Band couplings are used in the turbocharger system Each 100 hours inspect lockwiring on V band couplings for condition and security If loc...

Page 464: ...the engine 8 32 ALTERNATE AIR DOOR The alternate air door is located in the alternate air box to provide a source of air to the engine should there be an air stoppage through the filter system The fol...

Page 465: ...t cam follower is securely riveted to its spring Examine the contact points for excessive wear or burning Figure 8 1 0 shows how the average contact point will look when surfaces are separated for ins...

Page 466: ...ET 8 COTTER PIN 9 NUT 10 GEAR SUPPORT SHAFT 11 PIN 12 IGNITION CABL E EYEL ET 13 DISTRIBUTOR CASL E GROMMET 14 IGNITION CABL E FERRUL E 15 DISTRIBUTOR CABL E PLATE 16 GROUND TERMINAL KIT 17 WASHER 18...

Page 467: ...s d Remove the two nuts and washers securing the magneto to the engine accessory housing e Pull the magneto from the engine 8 37 MAGNETO TIMING PROCEDURE INTERNAL TIMING When installing or adjusting b...

Page 468: ...If not readjust breaker and recheck to be sure that contacts will open within E gap tolerance 4 Replace br aker assembly if E gap tolerances and contact clearance cannot be obtained 8 After timing is...

Page 469: ...NCE MINOR IRREGULARITIES SMOOTH ROLLING HILLS AND DALES WITHOUT ANY DEEP PITS OR HIGH PEAKS THIS IS A NORMAL CON DITION OF POINT WEAR Figure 8 10 Contact Points Figure 8 11 Impulse Coupling Reissued 1...

Page 470: ...ool to hold rotating magnet 3 Fabricate a pointer as shown in Figure 8 16 and install the pointer under the cam screw so the pointer indexes in the center of E gap position 4 Connect the 11 9110 Timin...

Page 471: ...ce Bulletin M68 2 may also be used NOTE Verify correct engine timing for the airplane being worked on by checking the engine dataplate 3 Remove the inspection hole plug from the magneto Turn the magne...

Page 472: ...Have a second person stand in front of the engine and turn the crankshaft in a clockwise direction until pressure is felt on the thumb No 1 piston is coming up on the compression stroke 2 Hold a machi...

Page 473: ...te with the slots of the drive bushings Install and snug down the two sets of attaching screws Do not tighten at this time 8 Breaker point opening may be checked by the use of a suitable timing light...

Page 474: ...ter buzzer or other suitable device such as the Bendix ECD High Tension Lead Tester Kits P N 11 8950 or 11 8950 1 check each lead for continuity If continuity does not exist harness wire is broken and...

Page 475: ...terminal Turn tester ON and apply 10 000 volts The insulation resistance should be 100 megohms minimum Proceed to check other leads of harness in the same manner 8 41 REMOVAL OF HARNESS a Disconnect...

Page 476: ...and shielding 5 To determine what length the new lead assembly should be cut to proceed as follows a Measure the length of the condemned lead assembly Move the coupling nut back on the lead assembly a...

Page 477: ...t BLEND O D TO I D POLISH O D 12 000 IN MAT NO 30 DRILL ROD OR EQUIVALENT Figure 8 19 Assembly Tool SPRING RETAINER ASSY SLEEV T CABLE Figure 8 20 Assembly Tool Application Ii REQUIRED LENGTH Figure 8...

Page 478: ...cutting backup tube is completely under the point at which the cut is to be made to prevent cutting or nicking insulation 11 Slide inner ferrule under the braid The braid should cover approximately tw...

Page 479: ...ERIAL BRASS Figure 8 22 Ferrule Seating Tool 0 047 SPHERICAL RAD 2 PLACES 0 095 DIA Figure 8 24 Needle Reissued 10 11 79 Figure 8 23 Measuring Wire From Top of Ferrule 2B22 11 7073 NEEDLE Figure 8 25...

Page 480: ...yelet after crimping See B of Figure 8 27 NOTE If the cri mping tool is not available a satisfactory connection can be made by soldering with Kester Flux 709 or equivalent and a non corrosive solder A...

Page 481: ...0 ON IGNITION SWITCHES 2 I ___ _ _ _ _ _ _ l I RIGHT MAGNETO 5 I 3 L T 11 1 3 L 1 1 5 6r LOWER SPARK PLUGS Figure 8 28 Ignition Schematic ENGINE FIRING ORDER LTSIO 360 E 1 4 5 2 3 6 TSI0 360 E 1 6 3...

Page 482: ...2Cl INTENTIONALLY LEFT BLANK...

Page 483: ...ed which frequently results in damage to the barrel insulator and connector If the lead cannot be removed easily in this manner the resisting contact between the neoprene collar and the barrel insulat...

Page 484: ...he time the carbon dioxide is applied will aid in the removal of an excessively seized plug e Do not allow foreign objects to enter the spark plug hole 8 46 INSPECTION AND CLEANING OF SPARK PLUG a Vis...

Page 485: ...THISPAGEINTENTIONALLYLEFTBLANK 2C4...

Page 486: ...ts excessive oil pressure by allowing t xcess oil to be returned to the sump After lea ing the pump the oil under pressure enters a full flow filter and is passed onto the oil cooler If the filter ele...

Page 487: ...a Remove the lockwire between the nut on the filter and the oil filter adapter and unscrew the filter element b Before installing a new filter lubricate the gasket on the filter with engine oil c Torq...

Page 488: ...uel supply ports simultaneously The fuel discharge nozzles are an air bleed type nozzle with a calibrated orifice A nozzle is installed in the cylinder head outside each intake valve for each cylinder...

Page 489: ...PIPER SENECA II SERVICE MANUAL THIS LINE IS ENGINE FUEL PUMP VAPOR SEPARATOR IDLE PRESSURE l RELIEF VALVE CLOCKWISE TO INCREASE Figure 8 31 Schematic Diagram of Fuel Injection System 2C8 IDLE CUT OFF...

Page 490: ...uel supply ports simultaneously The fuel discharge nozzles are an air bleed type nozzle with a calibrated orifice A nozzle is installed in the cylinder head outside each intake valve for each cylinder...

Page 491: ...PIPER SENECA II SERVICE MANUAL THIS LINE IS ENGINE FUEL PUMP VAPOR SEPARATOR IDLE PRESSURE l RELIEF VALVE CLOCKWISE TO INCREASE Figure 8 31 Schematic Diagram of Fuel Injection System 2C8 IDLE CUT OFF...

Page 492: ...ward position b Rig the propeller control as follows 1 Place the propeller control lever full forward 2 With the propeller governor control arm in the low pitch high RPM position rig the quadrant cont...

Page 493: ...old pressure line at air throttle body compressor discharge pressure line at manifold valve and fuel pressure line at manifold valve 2 Connect surgical tubing to the compressor discharge pressure line...

Page 494: ...ents to the engine in close proximity to the propeller arc shut the engine down before making adjustments d Check and Adjustment of Idle Fuel Pressure NOTE The following setup procedure is accomplishe...

Page 495: ...Performance Refer to Figure 8 35 CAUTION Before attempting full power checks be sure that the brakes are properly maintained and set and that the ground conditions will not permit the wheels to slip...

Page 496: ...s screw housing reinstall the cap on the tee of the throttle body housing j The accuracy of the cockpit fuel flow gauge at maximum power can be checked against a calibrated gauge by connecting the cal...

Page 497: ...rich mixture cowl flaps open 2 575 25 RPM 105 MPH airspeed and 1 000 to 3 000 feet density altitude check the operation of the manifold pressure relief valve Slowly advance one throttle to the wide op...

Page 498: ...ERVICE MANUAL I I I I I I I I I I I 40 IN HG MANIFOLD PRESSURE FULL RICH MIXTURE 7 1 j V I V I I v j V 17 J V J j I V I 2350 2400 j I I J I I V V I J I 2450 R P M J I I V I I I V 2500 I I V 17 j TABLE...

Page 499: ...at manifold valve and gage must be vented to turbo discharge pressure T v TOLERANCE 25 psi v E v E 7 E E v E V E w 6 8 10 12 14 16 18 20 METERED FUEL PRESSURE psi TABLE VIII V METERED FUEL ASSEMBLY CA...

Page 500: ...h of peak T I T is prohibited for all conditions I Continuous operation at T I T in excess 11 R of 1650 F is prohibited I I 1 1 I I Represents limits variations from sea level to 12 000 feet I i I 60...

Page 501: ...ine starts but Inadequate fuel to Set fuel control in FULL RICH position turn fails to keep fuel manifold valve auxiliary pump ON check to be sure feed lines running and filters are not restricted Cle...

Page 502: ...at speeds above mixture loose connections Check fuel control for idle setting and adjustment Check fuel filters and screens for dirt Check for proper pump pressure and readjust as necessary Restricted...

Page 503: ...g connections Tighten connections and replace damaged parts Loose or damaged Inspect entire manifold system for possible leakage intake manifolding at connections Replace damaged components tighten al...

Page 504: ...ud Adjust as required to obtain correct operation Incorrect fuel in Check and adjust using appropriate equipment jector pump adjust Replace defective pump ment and operation Defective fuel in Replace...

Page 505: ...ge line and tighten connections or improperly purged lines Low oil pressure Insufficient oil in Add oil or change oil to proper viscosity on engine gauge oil sump oil dilu tion or using im proper grad...

Page 506: ...t Defective check valve Disassemble and clean valve or replace in turbocharger oil supply line Poor engine idle Engine getting fuel Check fuel control for being in full IDLE CUTOFF cutoff position Che...

Page 507: ...PIPER SENECA II SERVICE MANUAL VIII POWER PLANT 01 01 09 2D2 END OF SECTION...

Page 508: ...PIPER SENECA II SERVICE MANUAL 2D2A SECTION IX FUEL SYSTEM...

Page 509: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 2D2B...

Page 510: ...1 9 16 Cleaning and Inspection of Fuel Cells 2D11 9 17 Fuel Cell Compartment 2D13 9 18 Handling and Storage of Fuel Cells 2D13 9 19 Repair of Fuel Cells 2D13 9 19a Fuel System Leakage Inspection 2D14...

Page 511: ...41 Leak Test of Selector Valve 2D23 9 42 Installation of Fuel Selector Valve 2D23 9 43 Rigging of Selector Valve 2D24 9 44 Cleaning Fuel System 2D24 9 45 Electric Fuel Pump 2D24 9 46 Removal and Inst...

Page 512: ...ted in the wing tanks Fuel for each engine is drawn through a finger screen located in the inboard fuel tank to a selector valve From the selector valve the fuel goes through a fuel filter to the elec...

Page 513: ...Service Kit No 761 094v the primer switch location and actuation is the same as the basic airplane However this system includes several parts not found in the basic airplane but which make up an inte...

Page 514: ...ANUAL 931 OPTIONAL ENGINE PRIMER SYSTEM L H AND R H f r r _ r THROTTLE BODY DIVERTER VALVE FUEL MANIFOLD VALVE i f TO AUX FUEL CONTROL PANEL LOW POINT ORA INS ML Figure 9 1 Fuel System Schematic Revis...

Page 515: ...ng sealer Pay particular attention to the area around the filler neck outboard tank only as a result of the metal nozzle of the gas filler hose nicking the sealer This inspection can best be accomplis...

Page 516: ...OF OUTBOARD FUEL TANK a Using the same access hole described in Paragraph 9 6 and with fuel completely drained from the tank loosen clamps at hose connections on fuel line and fuel vent line Slide hos...

Page 517: ...Fuel Cell Installed a Position fuel tank in its recess in the wing Connect vent line on outboard side and fuel sender wires Slide tank completely into position and secure with screws around its perime...

Page 518: ...tanks Position clamp on nipple fitting so that when tightened the screw body does not contact top of fuel cell Torque to 15 inch pounds g Press outward firmly on sides and top of fuel cell to engage c...

Page 519: ...N LBS 3 HOSE CLAMP 32HL TORQUE 30 TO 50 IN LBS 4 FUEL VENT NIPPLE 5 FUEL VENT TUBE 6 WING PLUG 7 FUEL INTERCONNECT NIPPLE 8 INTERCONNECT FITTING 9 ACCESS PANEL 10 GASKETS 11 DOUBLER 12 SKIN 13 FUEL CE...

Page 520: ...for boxing rolling to insert in airframe cavities or handling in the repair area The cells to be repaired should be placed on a well lighted table Maintain natural contours if possible while repairing...

Page 521: ...ing checked for leaks B Fuel Tank Leak Test The following procedure as written tests both fuel tanks and the optional fuel cell as a unit when installed in the airplane NOTE If the optional fuel cell...

Page 522: ...HUT OFF I I I i OFF OFF 7 ALVE VALVE 3 MANOMETER NEEDLE VALVE VALVE 4 ON MAIN AIR SUPPLY NEEDLE VALVE MANOMETER i _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___ _ _ _ _ _ _ _ _ _ vALVE FL...

Page 523: ...pection and tightening the leak cannot be stopped component replacement is required 11 Slowly remove fuel vent cap s left and right wing and verify that remaining fuel cell pressure bleeds off thru ea...

Page 524: ...uired 12 If conducting any of the Flow tests proceed to that those test s below 13 Slowly remove fuel vent caps left and right wing and verify that remaining fuel cell pressure bleeds off thru each ve...

Page 525: ...left fuel selectors to OFF positions i e levers centered a Move flow meter valve connected to left firewall to ON position and verify that flow meter reads no more than 0 0 SCFH b Move flow meter valv...

Page 526: ...dyear representatives or those who have received their training from persons who have been certified and trained by Goodyear representatives 9 22 REPAIR LIMITATIONS OF FUEL CELLS Repair limitations ar...

Page 527: ...PIPER SENECA II SERVICE MANUAL IX FUEL SYSTEM 01 01 09 2D14F THIS PAGE INTENTIONALLY BLANK...

Page 528: ...hine d Repeat Methyl Ethyl Ketone washings two more times A total of three washings each surface e Tape a 8 x 8 piece of cellophane inside cell over injury f When all the above preparatory work has be...

Page 529: ...epair Group II equipment will be furnished at additional cost if ordered by customer Foam Rubber Cloth Back Sheet 1 4 x 12 x 12 Paint Brush I inch wide Aluminum Plates I 4 x 6 x 6 Measuring Cup 250ml...

Page 530: ...DEFECT REPAIRS OF FUEL CELL a Blisters Remove loose material by trimming Apply an outside and inside repair patch b Holes Punctures Cuts Tears and Deep Abraded Areas Trim away any ragged material and...

Page 531: ...ppear on the cloth they may be removed by resoaking the cloth in the solution 7 The solution and test cloth are satisfactory only as long as they remain clean Indicator solu tion that is not in immedi...

Page 532: ...fuel tanks that relate to the fuel quantity senders and gauge to be checked Refer to Draining Fuel System Section II b Level airplane laterally refer to Leveling Section II and position the aircraft w...

Page 533: ...PIPER SENECA II SERVICE MANUAL IX FUEL SYSTEM 01 01 09 2D18B THIS PAGE INTENTIONALLY BLANK...

Page 534: ...gain access to the rear of the fuel tank containing the sender to be removed b Remove electrical lead from fuel sender c Remove 5 AN3 bolts holding sender to fuel tank and remove sender 9 29b FUEL QUA...

Page 535: ...T CHECK 6 DRAIN FILTER FITTING 15 BOWL FILTER 7 NUT 16 WASHER 8 SPRING 17 SAFETY WIRE 9 BALL RELIEF Figure 9 4 Fuel Filter TABLE IX I FUEL QUAI TITY SE DER GAUGE TOLERANCES STA DARD FllFI SYSTEM OPTIO...

Page 536: ...not be separated from the element outer tube 3 for normal cleaning f If necessary to disassemble the filter cartridge remove the retainer cup 13 from the outer tube 3 and slide discs 11 and washers 1...

Page 537: ...the filter assembly d Turn the fuel selector to the ON position and check for any fuel leaks e Install the access plate 9 36 FUEL SELECTOR VALVE CAUTION NO FIELD DISASSEMBLY OR REPAIR OF FUEL SELECTO...

Page 538: ...bmerged in kerosene or a similar petroleum base fluid for 30 seconds d Depressurize remove the plug from the right hand port place on left hand port and close right hand port by placing the lever to l...

Page 539: ...nd cover assembly e Reinstall the access panel 9 44 CLEANING FUEL SYSTEM a To flush fuel tank and selector valve disconnect the fuel line from the injector b Select a fuel tank turn on the electric pu...

Page 540: ...auxiliary fuel pump Nate the voltage reading on the external power source voltmeter f The calibrated pressure gauge should indicate 31 to 37 psi g Connect the positive lead from the external power so...

Page 541: ...4 5 psi i Place the aircraft master switch in the off position J Reconnect the leads to the manifold pressure switch k With the fuel pump switch still in the high position return the master switch to...

Page 542: ...B 0 F TEST SET UP GAUGES 96899 ANO 38224 0 FIGURE I CLUSTER HOUSING REAR VIEW SWITCH A B C H G TEST SET UP GAUGE 38224 2 Figure 9 6a Resistor Set up Test for Fuel Quantity Gauge 2E3 90 OHMS 80 OHMS 61...

Page 543: ...E P N 38224 2 Switch Position Radial Mark Tolerance Radial Mark Tolerance Needlewidths Needlewidths F 10 E 10 20 1 D 20 1 30 1 C 30 1 40 1 B 40 1 50 1 A F 1 F 1 h Drain aircraft fuel system if not pre...

Page 544: ...system master switch in the off position and fuel already in the tanks as specified in step j add fuel to the left and right tanks to total quantities shown in Table IX III The fuel quantity readings...

Page 545: ...ion quired Check for obstructions in the fuel selector leverage mechanism Check fuel selector cable for freedom of movement Damaged fuel selector Replace fuel selector valve valve Fuel quantity gauge...

Page 546: ...r valve stuck Fuel tanks empty Defective gauge Fuel selector valve in improper position Obstruction in inlet side of pump Air in line to pressure gauge NOTE Check fuel selector valve Check fuel tanks...

Page 547: ...PIPER SENECA II SERVICE MANUAL IX FUEL SYSTEM 01 01 09 2E8 END OF SECTION...

Page 548: ...PIPER SENECA II SERVICE MANUAL 2E8A SECTION X INSTRUMENTS...

Page 549: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 2E8B...

Page 550: ...13 Removal and Installation 2E13 10 14 Pneumatic Pump 2E14C 10 15 General 2E14C 10 16 Troubleshooting 2E14C 10 16a Inspection 2E14C 10 17 Removal and lnstallation 2E14E 10 17a Replacing Pump Fittings...

Page 551: ...al and Replacement 2F5 10 47 Tachometer Indicator 2F5 10 48 General 2F5 10 49 Troubleshooting 2F5 10 50 Removal and Replacement 2F6 10 51 Engine Oil Pressure Gauge 2F6 10 52 General 2F6 10 53 Troubles...

Page 552: ...F12 10 76 Exhaust Gas Temperature Gauge 2F12 10 77 General 2F12 10 78 Removal of EGT Probe and Gauge 2F12 10 78a Cleaning and Inspection 2F12 10 78b Installation of EGT Probe and Gauge 2F12 10 79 Trou...

Page 553: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK X TABLE OF CONTENTS 01 01 09 2E10...

Page 554: ...ators in line filters manifold assembly pressure gauge and the necessary tubing and hoses The system operates at a preset pressure which is monitored at the pressure gauge mounted in the right side of...

Page 555: ...NG Refer to Table X I 10 12 ADJUSTMENTS TO PRESSURE REGULATOR Refer to Figure 10 1 a Remove nacelle cover to gain access to the pressure regulator b For S N up to 34 8170091 inclusive Operate both eng...

Page 556: ...ove the nacelle access cover b Loosen the hose clamps on the regulating valve and disconnect the hoses c Disconnect the two electrical leads d Remove the nut and flat washer securing the regulator to...

Page 557: ...WALL FOR SERVICE INFORMATION REFER TO SECTION XIV PARAGRAPH 14 43 1 PUMP 2 AIR FILTER 3 INLINE FILTER 4 ATTITUDE GYRO COPILOT 5 DIRECTIONAL GYRO COPILOT 6 PRESSURE GAUGE 7 ATTITUDE GYRO 8 DIRECTIONAL...

Page 558: ...old leaking fittings Pressure correct on Pump malfunctioning Replace pump ground but will not maintain pressure at Dirty filter Replace filter altitude Regulator sticky Clean regulator Pressure correc...

Page 559: ...01 01 09 2E14B Trouble Cause Remedy TABLE X I TROUBLESHOOTING GYRO PRESSURE SYSTEM CONT Regulator cannot be Lines leaking Check lines and fittings adjusted to produce correct pressure Dirty filter Rep...

Page 560: ...nt Parker Airborne pumps The Aero Accessories pumps feature a wear indicator inspection port on the back cover which allows direct observation of pump vane wear Beginning at 500 hours time in service...

Page 561: ...hereafter inspect the vacuum pumps as follows 1 Remove engine cowling 2 Ground magnetos and turn the fuel selector to OFF CAUTION DIRT GREASE OR DEBRIS IN THE AREA OF THE INSPECTION PORT PLUG COULD CO...

Page 562: ...securely and squarely against the pump body b With your finger tip gently push the plunger into the pump When the plunger touches the vane you may feel the vane move slightly if it is not at the botto...

Page 563: ...E SPRAY LETTING IT DRY BEFORE ASSEMBLY 1 Before installing any fittings on pump check for any external damage A pump that has been damaged or dropped should not be installed CAUTION DO NOT APPLY VISE...

Page 564: ...atic button is disconnected The test should be performed prior to the next flight NOTE Ensure the lines and fittings are free of any entrapped moisture or restrictions 1 Attach the test fixture to the...

Page 565: ...he static system checks above 14 Remove the test fixture and tape from the static button NOTE If any connections in the pitot static system are opened for maintenance the entire system must be recheck...

Page 566: ...3 STATIC LINE 15 ALTERNATE STATIC AIR VALVE 4 SWITCH PANEL 5 HEATED PITOT SWITCH 6 TEE 7 STATIC BUTTON 8 PITOT HEAD 9 PITOT LINE 10 SUMP ASSEMBLY DRAIN VALVE 11 CONNECTOR 12 GASKET I I I I I I I I I I...

Page 567: ...S 27 DIRECTIONAL GYRO COPILOT S r 28 ATTITUDE GYRO COPILOT S 29 VERTICAL SPEED INDICATOR COPILOT S 30 ALTIMETER COPILOT S 31 CIGAR LIGHTER 32 CLOCK COPILOT S 33 MIKE ANO PHONE JACKS 34 ALTIMATIC Ill C...

Page 568: ...plane magnetic compass provides a positive indication free from swing and turning error However the directional gyro has no sense of direction and must be set to the magnetic compass Since the magneti...

Page 569: ...trnment Replace instrument 10 22 REMOVAL AND REPLACEMENT Refer to Paragraph 10 72 of this section 10 23 GYRO HORIZON 10 24 GENERAL The gyro horizon is essentially an air driven gyroscope rotating in a...

Page 570: ...nting screws shimmies continuously panel Pressure too high Adjust valve Defective instrument Replace instrument Instrument does not Instrnment not set properly indicate level flight Instrument not lev...

Page 571: ...E X IV RATE OF CLIMB INDICATOR Trouble Cause Remedy Pointer does not set Aging of diaphragm Reset pointer to zero on zero by means of setting screw Tap instrument while resetting Pointer fails to Obst...

Page 572: ...ndths of feet A barometric pressure window is located on the right side of the indicator dial and is set by the knob located on the lower left corner of the instrument The altimeter consists of a seal...

Page 573: ...Water in static line Remove static lines reading as aircraft from all instruments is banked and blow line clear from cockpit to sensor Altimeter requires Temperature compensator Change instrument res...

Page 574: ...ration of the airplane 10 37 TROUBLESHOOTING TABLE X VI AIRSPEED TUBES AND INDICATOR NOTE If any connections in the pitot static system are opened for maintenance the entire system must be rechecked p...

Page 575: ...aircraft on a magnetic East heading and do the same as Step b adjusting E W adjusting screw d Head aircraft on a magnetic South heading and note resulting South error Adjust N S adjusting screw until...

Page 576: ...2F3 INTENTIONALLY LEFT BLANK...

Page 577: ...the engines This is accomplished by depressing the two valves for 5 seconds while operating the engines at 1000 RPM NOTE Do not depress the valves when manifold pressure exceeds 2 5 inches Hg 10 45 T...

Page 578: ...in Depress line valves and or line disconnect lines at in strument and blow out 10 46 REMOVAL AND REPLACEMENT Refer to Paragraph 10 72 of this section 10 47 TACHOMETER INDICATOR 10 48 GENERAL Each tac...

Page 579: ...ointer goes all the Excessive lubricant in Replace instruments way to stop more instruments noticeable in cold weather Pointer jumps at idle Speed cup hitting Replace instrument rotating magnet Tachom...

Page 580: ...line and oscillation engine relief fill with light oil Check for leaks If trouble persists clean and adjust relief valve Sluggish operation of Engine relief valve Clean and check pointer or pressure...

Page 581: ...oreign matter lodged Replace instrument in instrument Incorrect sensitivity Out of calibration Replace instrument Incorrect turn rate Out of calibration Replace instrument Ball sticky Flat spot on bal...

Page 582: ...ck Replace fuel transmitter Fuel gauge indicates Intermittent electrical Check ground at inboard iRcorrectly connection transmitter and electrical connections Faulty transmitter Replace fuel transmitt...

Page 583: ...of the instruments Special care should be taken when any operation pertaining to the instruments is performed a Remove the face panel b With the face panel removed the mounting screws for the individ...

Page 584: ...lead in threads to be visible from the end of the fitting Hold in place and wrap in the direction of the threads so tape will remain tight when fitting is installed 2 Apply sufficient tension while wi...

Page 585: ...remove the gauge c Remove wires from the wire harness going to the engine d Loosen the nut which secures the EGT probe to the exhaust transition area of the exhaust system and remove the probe 10 78a...

Page 586: ...ale Fluctuating reading Loose frayed or broken Clean and tighten electrical leads or connections Repair faulty connections or replace defective leads 10 80 CYLINDER HEAD TEMPERATURE GAUGE 10 81 GENERA...

Page 587: ...is a non electric differential pressure gauge mounted in the bottom of the instrument panel This instrument measures flow by reading the pressure drop across a fixed orifice located in the fuel divide...

Page 588: ...speed Indicator Green Arc Normal Operating Range 76 MPH to 190 MPH Yellow Arc Caution Range Smooth Air 190 MPH to 224 MPH White Arc Flaps Extended Range 69 MPH to 125 MPH Radial Red Line Never Exceed...

Page 589: ...PIPER SENECA II SERVICE MANUAL X INSTRUMENTS 01 01 09 2F16 END OF SECTION...

Page 590: ...PIPER SENECA II SERVICE MANUAL 2F16A SECTION XI ELECTRICAL SYSTEM...

Page 591: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 2F16B...

Page 592: ...ecifications 2G8 11 16 Alternator Nomenclature 2G8 11 17 Voltage Regulator 2G8 11 18 Regulator Components 2G9 11 19 Operation of Regulator 2G9 11 20 Balancing Circuit Operation 2G10 11 21 Preparation...

Page 593: ...llation of Wing Navigation Light 2H3 11 57 Removal of Tail Navigation Light 2H3 11 58 Installation of Tail Navigation Light 2H3 11 58a Anti Collision Lights 2H3 11 59 Removal of Lamp in Anti Collision...

Page 594: ...ils to produce current accompanied by a zero indication on the individual ammeter The loads from the electrical bus system are protected by manual reset type circuit breakers mounted on the lower righ...

Page 595: ...lternators External Power Left Right S I 34 7570001 to 7570337 S 1 34 7670001 to 7670393 S N 34 7770001 and up Radio Bus Power SI 34 7570001 to 7570337 S N 34 7670001 to 8070001 S N 34 8070002 and up...

Page 596: ...AR SYSTEM Landing Gear LIGHTING SYSTEMS EXTERNAL Anti Collision Strobe Fin Anti Collision Strobe Wing and Fin Landing Lights Position Lights Tail Flood Logo Optional LIGHTING SYSTEMS INTERNAL Baggage...

Page 597: ...PIPER SENECA II SERVICE MANUAL XI ELECTRICAL SYSTEM 01 01 09 2F20 THIS PAGE INTENTIONALLY BLANK...

Page 598: ...PIPER SENECA II SERVICE MANUAL Figure 11 1 Switch Panel Without Primer Switches Rei sued 10 11 79 ELECTRICAL SYSTEM 2F21...

Page 599: ...PIPER SENECA II SERVICE MANUAL 1980 Figure 11 1 a Switch Panel With Primer Switches Re sued 10 11 79 ELECTRICAL SYSTEM 2F22...

Page 600: ...ker 10 amps and multiply this by 80 percent you will arrive at a current of 8 amperes This is the approximate current drawn by the anti collision light Therefore when the anti collision light is switc...

Page 601: ...heck of eac alternator as well as the electrical output input of the battery Should either alternator show no output on its ammeter check the appropriate circuit breakers If a further check of the amm...

Page 602: ...d the ground polarity of the alternator are the same b When connecting a booster battery make certain to connect the negative battery terminals together and the positive battery terminals together c W...

Page 603: ...om the stator assembly e To remove the slip ring end bearing and grease seal it will be necessary to have a hook type or impact type bearing puller as shown in Figure 11 2 Do not remove the bearing un...

Page 604: ...2G3 INTENTIONALLY LEFT BLANK...

Page 605: ...ulb connected in series with a 12 volt battery can be used in the following manner Touch one test probe to a rectifier heat sink and the other test probe to a lead from one of the rectifiers in that h...

Page 606: ...seals are recommended even though the bearings and seals appear to be in good condition A faulty seal can cause an alternator to fail within a very short period of time 11 12 ASSEMBLY OF ALTERNATOR a...

Page 607: ...tall the brush and holder assembly and retaining screws Spin the rotor and check for interference between the brush holder and rotor Check across the field terminals with an ohmmeter The ohmmeter must...

Page 608: ...circuit energized and the alternator operating c Do not attempt to polarize the alternator No polarization is required Any attempt to do so may result in damage to the alternator regulator or circuits...

Page 609: ...ing is in the slip ring end head When the unit is assembled the inner race aligns with the bearing When the bearing is replaced the new inner race must be installed on the rotor shaft b Lubrication Th...

Page 610: ...ow through R6 and Z 1 establishes a reference voltage across Z1 c Resistors R 1 and R2 R3 comprise a voltage divider which is adjustable by means of the variable portion R3 Voltage at the junction of...

Page 611: ...R17 effectively alters the ratio of the regulator dividt 1 R l R2 1 3 in the direction to increase Ql collector current flow g As described above under REGULATING CIRCUIT OPERATION increased QI curre...

Page 612: ...ed to the battery ground cable for negative ground systems d The regulator under test is to be mounted on a grounded metallic surface using three No 8 screws pulled up tight For extended test periods...

Page 613: ...RPM Turn on accessories as needed to establish a 10 to 15 ampere load value Note that the battery charge current is indicated by the ammeter Therefore the current value may change downward at the beg...

Page 614: ...ly one engine either left or right The engine to be operated must be selected so as to permit the technician a completely safe access to both of the regulators so that they may be adjusted while the e...

Page 615: ...oltmeter leads and test equipment and install the closeout panel in the baggage compartment 11 24 OVERVOLTAGE RELAY 11 25 CHECKING OVERVOLTAGE RELAY The relay may be tested with the use of a good qual...

Page 616: ...ER VOLTAGE CONTROL ALTERNA TOR OR IGNITION SWITCH Figure 11 13 Application of Overvoltage Control OVER VOLTAGE CONTROL 0 ALTERNATOR BATTERY VOLTMETER o BAT REG 0 1 0 ON POTENTIOMETER BATTERY BATTERY F...

Page 617: ...ions are clean and tight and that the insulation is sound A voltage loss test should be made to locate any high resistance connections that would affect starting motor efficiency This test is made wit...

Page 618: ...g motor should be removed from the engine for cleaning and repair 11 31 REMOVAL To remove the starting motor from the engine first disconnect the ground cable from the battery post to prevent short ci...

Page 619: ...o a commutator segment and the other to the armature core If the test lamp lights the armature is grounded and should be replaced c To test for shorted armature coils a growler is used Refer to Figure...

Page 620: ...te the felt oiling pad in the commutator end head with SAE 20 oil Allow excess oil to drain out before installing end head on motor Put a light film of Lubriplate 777 on the drive end of the armature...

Page 621: ...11 20 c If torque and current are not within specifications check the seating of the brushes and internal connections for high resistance If these checks are made and found to be in good order replace...

Page 622: ...nd draw off fumes that may accumulate due to the charging process of the battery The drain is clamped off from the bottom of the fuselage and should be opened occasionally to drain any accumulation of...

Page 623: ...ave been cleaned and are free of acid b Install the battery in box c Connect the positive lead to the positive battery terminal and secure d Connect th ground cable to the negative battery terminal an...

Page 624: ...e of the fuselage and drain off any electrolyte that may have overflowed into the box b Clean the battery and the box Corrosion effects may be neutralized by applying a solution of baking soda and wat...

Page 625: ...S These lights consist of two 250 watt lamps which are located on a mounting fixture secured to the nose gear oleo strut housing Both lamps are used for landing and one lamp is used while taxiing Each...

Page 626: ...SYSTEM This system consists of an inboard and outboard lift detector both of which are electrically connected to a stall warning horn located behind the instrument panel The 1975 models also included...

Page 627: ...ght and horn are installed ascertain that both operate b With the flaps in the 25 and 40 down position and the master switch on raise the sensor blade of the inboard lift detector The warning system s...

Page 628: ...ECTOR a Attach electrical leads to the appropriate terminals of the lift detector b Position the unit on the wing determining that the sensor blade of the unit drops down freely and secure in position...

Page 629: ...ly is charged to approximately 450 volts D C then discharged across the Xenon flash tube at intervals approximately 45 flashes per minute The condenser is parallel across the Xenon flash tube which is...

Page 630: ...pins 1 2 and 3 to airplane ground If continuity exists the cable is shorted and should be replaced d Check the tube socket assembly for shorts l Disconnect the tube socket assembly of the anti collisi...

Page 631: ...lots b Secure the assembly to the instrument panel with the two screws previously removed c Connect the electrical connection to the assembly d Check operation of Dimmer Control Assembly 11 69 ANNUNCI...

Page 632: ...The mixture control can be moved to cut off then to rich in order to get lower then normal idle speeds e With both engines at approximately 900 RPM place one alternator in the off position at a time...

Page 633: ...g lights Test switch grounded Check terminals and fail to extinguish out replace switch if after engine is running necessary Oil or gyro air Sensor activates at Replace warning light fails too high a...

Page 634: ...warning Lamp burned out light fails to operate Alternator warning Blown fuse or fuses light fails to extinguish Defective alternator output circuit Test switch fails to Bad switch or connections acti...

Page 635: ...points in sequence bus bar output circuit diodes field circuit breaker SA field terminals of master switch voltage regulator and alternator field terminal Interruption of voltage through any of these...

Page 636: ...See Figure 11 23 Open field winding in Disconnect field terminal alternator of alternator from field wiring and check for continuity from field terminal to ground with ohmmeter 20 100 ohms depending...

Page 637: ...eplace regulator High resistance connec Check visually for loose tions in field or output binding posts at the circuit various junction points in system alternator battery post lugs on ammeter connect...

Page 638: ...each leg of field circuit working from the alternator towards the circuit breaker until breaker can be reset and will hold Replace component or wire which was isolated as defective See Figure 11 23 S...

Page 639: ...rnator rotor through 360 of travel Observe circuit breaker for signs of tripping CAUTION Turn magneto switch to off before turning pro peller Output circuit defective Short circuit in output Disconnec...

Page 640: ...o reversed charging NOTE This type of condition can only occur in a case where a discharged battery has been re moved from the airplane and put on a charger with the polarity re versed This reversal i...

Page 641: ...h free fit in the brush or brushes with ex boxes without excessive cessive side play side play Binding brushes and brush boxes should be wiped clean with a gasoline undoped moistened cloth A new brush...

Page 642: ...r If too rough and pitted re move and turn down Blow out all particles Shorted grounded or Remove and replace with open armature an armature known to be in good condition Grounded or open field Test r...

Page 643: ...attery worn out Replace battery Low electrical system Check voltage regulator voltage voltage Standing too long Remove and recharge battery if left in unused airplane 3 weeks or more Equipment left on...

Page 644: ...illage from over Use care in adding inside container filling water Vent lines leaking or Repair or clean clogged Charging rate too high Adjust voltage regulator Battery freezes Discharged battery Repl...

Page 645: ...t 753 431 1073 Anti Collision 757 635 A406 Landing Light 472 661 4509 Reading Light 93 Compass Light 472 054 330 Forward Baggage 472 036 89 Stall Warning 572 054 330 Instrument Cluster 53 Gear Down 47...

Page 646: ...GEAR H HEATER VENTILATING DEICING L LIGHTING P DC POWER Q FUEL OIL QUANTITY RP RADIO POWER RG RADIO GROUND RZ RADIO AUDIO INTERPHONE J IGNITION W WARNING K ENGINE CONTROL STARTER Harness Connector Nu...

Page 647: ...M N C BUS BAR ELECTRICAL CLUTCH TERMINAL BLOCK POTENT 10METER 0 0 0 0 0 0 0 0 LAMP ZENER DIODE DIODE FUSE RESISTOR BUTT CONNECTORS NOISE FILTER CONDUCTORS SHIELDED CONDUCTORS r CONDUCTORS CROSSINGS AN...

Page 648: ...ter 15 13 0 X Defroster Blower 10 3 0 X Electric Pitch Trim 5 5 0 X Fuel Pump 2 5 10 0 X Heated Windshield 15 13 8 X X Hydraulic Pump 25 25 0 X Instrument Lights 5 3 0 X Landing Lights 2 10 8 0 X Mast...

Page 649: ...I RECEPT1CL E I I EXTERNAL DOWER 30LENOID L ______ ____ __j EXTERNAL PIJWER R AMMETER ALTERNATOR SWITCH RIGHT ALTERNATOR LEFT ALTERNATOR RIGHT ALTERNATOR TO ANNUNCIATOR l p IC AL I 1 1 MASTER SOLENOI...

Page 650: ...ER G R AMMETER t RIGHT ALTERNATOR LEFT ALTERNATOR RIGHT ALTERNATOR TO ANNUNCIATOR r 7 I __ I 1111 I ioi I I I I I EXTERNAL PWR I RECEPTICLE EXTERNAL POWER I SOLENOID I I L _____________ J EXTERNAL POW...

Page 651: ...1803 37067 LEFT MASTER SWI TCH MAIN BUS RIGHT ALTERNATOR LEFT ALTERNATOR RIGHT ALTERNATOR TO ANNUNCIATOR 1 0 To ___ 71 1 1 I I I I I EXTERNAL PWR I RECEPTICLE I EXTERNAL POWER SOLENOI D I I L _______...

Page 652: ...RTER SOLE NOi D K3 RIGHT srARTER SOLENOID STARTER a ACCESSORY 1 7 I I I I I I I OPTIONAL SWITCH I PANEL LIGHTS j SIN 34 777000 I a UP I I I I I L __________ 1 K2AR RIGHT STARTER M MOTOR t r m PIE 1 8...

Page 653: ...HYDRAULIC PUMP NOTE FLASHER USED ON SERIAL NOS 34 7670001 AND UP PIPER SENECA II SERVICE MANUAL GEAR SELECT SWITCH LANDING GEAR CONTROL a WARNING Figure 11 27 Landing Gear Revised 11 12 82 ELECTRICAL...

Page 654: ...1 RESISTORS NOT USED ON SERIAL NOS 34 7570207 AND UP AND SERIAL NOS 34 7570002 TO 34 7570206 PROVIDING SERVICE BULLETIN NO 475 HAS BEEN ACCOMPLISHED 2 ON MODELS 34 8070178 AND UP WITH LIGHTED TURN CO...

Page 655: ...L TEMP E FUEL LEFT 5 AMP ENGINE GAUGES RIGHT 5 AMP I RIGHT MAIN E ii O Figure 11 29 Engine Gauges Early Models EL1808 r 1 CYLINDER ENGINE I HEAD TEMP OIL TEMP _L L FUEL I LEFT MAIN I L re I _J LEFT 5...

Page 656: ...TIONAL FIN ANTI COLL N 10 AMP Figure l l 32a Anti Collision Strobes Revised 11 12 82 217 EL1819 E 0 FIN STROBE ANTI COLL FIN STROBE IOAMP i i ____________________ Figure 11 32 Anti Collision Fin Strob...

Page 657: ...70001 to 34 8070001 Figure 11 33 Radio Bus Power S N 34 7570001 to 34 7570337 XI ELECTRICAL SYSTEM 01 01 09 2I8 EL1805 37067 EL1805 37067 EL 1805 37067AP MASTER CONTACTER r TO EXT L PWR SOLENOID TO MA...

Page 658: ...up 01 01 09 XI ELECTRICAL SYSTEM 2I9 EL1809 EL1809 37067AM TO LEFT e RIGHT ALTERNATOR BUS CONNECTION L _ _ _ _ _ _ _ _ PASSENGER READING LIGHTS e 9 LAMP TEST 8 2 S N 7570001 TO 7770441 INCLUSIVE I _...

Page 659: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 2110 ELECTRICAL SYSTEM...

Page 660: ..._ _ _ _ _ _ _ _ _ _ _ _ __ i ct I 0 M EL1612 OPTIONAL Figure JJ 37 Magnetos MAIN BUS FIA BLOWER l AMP r 1 I 4 I I I I I I I I t I I I I I I I I 1 I I I I I l ________ j USED ON SIN J4 7870056 AND UP c...

Page 661: ...EFROST 15 AMP VENT I BLOWER I I r_1_1 L f El H7A E El FUEL VALVE Hl5A l E3 3 Revised 11 12 82 ADEFROST yBLOWER FUEL PUMP I I I I RNF RADIO NOISE FILTER RAM AIR sw COMBUSTION BLOWER IGNITION UNIT L _ H...

Page 662: ...ARN PREVENTION SWITCH IS USED ON SERIAL NOS 34 7670001 AND UP 2 STALL WARN LIGHT NOT USED ON SERIAL NOS 34 7670001 AND UP U EL1B11 STALL WARN HTR INBOARD Figure I1 41 Stall Warning 3 WAY SPLICE LEFT W...

Page 663: ...Auxiliary System SERIAL NOS 34 7670057 TO 34 7670097 AND AIRCRAFT MODIFIED BY PIPER MOD KIT 760 926V 1B 04BR JS Q48R F Q4GR EMER hPRIME r SWITCH 04 ER FUEL Q4HR 20 H C MANIFOLD I I 1 PRESSURE SW IOV...

Page 664: ...Fuel Pump EL1818 l LEFT TURN AND BANK 5A Ji RIGHT TURN AND BANK STANDARD INSTALLATION ALL MODELS TURN AND BANK INSTALLATIONS LEFT TURN AND BANK F 2 c r 120 L3E _l_ 1 TO PANEL LIGHTING RIGHT TURN AND B...

Page 665: ...OR SEE INSTRUMENT PANEL LIGHTS WHERE APPLICABLE Figure 11 47 Electric Clock and Hourmeter Optional ACCESSORY LIGHTS 10 AMP TO COURTESY LIGHTS PRESSURE SWITCH __________________________________________...

Page 666: ...NUAL 1 A C PWR OFF 2 AIRCRAFT ON GROUND 3 A C DOOR FULL CLOSED 9 6 4 S6 8 Figure 11 49 Air Conditioning 2117 I i S 4 I FLIGHT LIMIT I SWITCHES SHOWN IN I IN FLIGHT POSITION ttJ L ____________ _ FLT CL...

Page 667: ...K OPTION SEE ALTERNATOR AUTOMATIC SWITCH BAG COMPT LIGHT i L r 0 r ELIBIO Figure 11 50 Courtesy Lights Optional Serial 1 os 34 7970105 and up FORWARD BAG INTEGRATED LIGHT SWITCH SEE ALTERNATOR 5A MAST...

Page 668: ...SENECA II SERVICE MANUAL RIGHT PANEL LIGHTING INTENTIONALLY LEFT BLANK Figure 11 52 Alternate Turn and Bank EL1810 L H Revised 11 12 82 R H Figure I1 53 Tail Flood Logo Optional 2119 TAIL FLOOD LIGHTS...

Page 669: ...PIPER SENECA II SERVICE MANUAL XI ELECTRICAL SYSTEM 01 01 09 2I20 END OF SECTION...

Page 670: ...PIPER SENECA II SERVICE MANUAL 2I20A SECTION XII ELECTRONICS...

Page 671: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 2I20B...

Page 672: ...s Corp 2I23 12 7 Battery Removal and Installation Narco 2I24 12 8 Description Operation and Testing of Pilot s Remote Switch 2J2 12 9 Testing Emergency Locator Transmitter 2J2 12 9a EMI and RFI check...

Page 673: ...THIS PAGE INTENTIONALLY BLANK XII TABLE OF CONTENTS 01 01 09 2I20D PIPER SENECA II SERVICE MANUAL...

Page 674: ...he ON ARM OFF switch on the transmitter to the OFF position c Disconnect the antenna coax from the transmitter d Disconnect the harness to the pilot s remote switch e Remove the rear mounting bracket...

Page 675: ...E Before installing access plate ascertain that transmitter switch is in the ARM position It may also be advisable to test the unit operation before installing the access panel Refer to Paragraph 12 9...

Page 676: ...Y REMOVALAND1NSTALLAT10N COMMUNICATIONS COMPONENTS CORP The ELTis located on the right side of the airplane tail section ahead of the stabilator a Remove the access plate on the right side of fuselage...

Page 677: ...structural failure of whip in flight 12 7 BATTERY REMOVAL AND INSTALLATION NARCO Refer to Figures 12 3 and 12 4 a Set the ON OFF ARM switch on the transmitter to OFF b Disconnect antenna coaxial cable...

Page 678: ...__r 1 KEYWAY TRANSMITTER NO CIR 11 2 CIRCUIT PROTECTOR SHLD e WHT RED SERIAL NUMBERS 34 7670304 AND UP VIEW A NOTE Al RC RAFT POWER USED TO SHUT OFF THE ELT WITH REMOTE SWITCH B126 Revised 3 16 81 Fi...

Page 679: ...shielded enclosure is not available testing may be performed in accordance with the following procedures 1 Test should be no longer than three audio sweeps 2 If the antenna is removed a dummy load sh...

Page 680: ...AND DOWN VIEW C ANTENNA EXTENSION TAB SET ON OFF ARM SWITCH TO ON PIN STOP Figure 2 5 ELT Portable Folding Antenna Narco NOTCH FOR PORTABLE ANTENNA CONTACT SEPARATOR PORTABLE ANTENNA BLADE NOT HANDLE...

Page 681: ...is performed b Procedure 1 Position the aircraft at least 50 yards from buildings or any other large structures 2 Ensure all aircraft closeout panels excluding interior trim panels and engine cowling...

Page 682: ...crew in a counterclockwise direction c Slide the avionics unit aft and out of the instrument panel tray rack 2 Installation NOTE Inspect the front of the panel mounted avionics tray rack to verify it...

Page 683: ...stem options it is mandatory to follow the service literature published by the individual manufacturer of the A F C S equipment installed in any particular airplane This includes mechanical service su...

Page 684: ...Piper Pitch Trim Service Manual 753 771 for manual electric pitch trim service information The following is a complete listing of Piper A F C S equipment service literature It is imperative to correc...

Page 685: ...PIPER SENECA II SERVICE MANUAL XII ELECTRONICS 01 01 09 2J6 END OF SECTION...

Page 686: ...PIPER SENECA II SERVICE MANUAL 2J6A SECTION XIII HEATING AND VENTILATING...

Page 687: ...THIS PAGE INTENTIONALLY BLANK 2J6B PIPER SENECA II SERVICE MANUAL...

Page 688: ...eater 30 000 BTU 2J18 13 19 Installation of Heater 30 000 BTU 2J18 13 20 Removal of Heater 45 000 BTU 2J19 13 21 Installation of Heater 45 000 BTU 2J19 13 22 Heater Electrical System Checks 2J20 13 23...

Page 689: ...PIPER SENECA II SERVICE MANUAL XIII TABLE OF CONTENTS 01 01 09 2J6D THIS PAGE INTENTIONALLY BLANK...

Page 690: ...aining Components 30 000 BTU Disassembly 45 000 BTU Heater Disassembly of Combustion Air Blower Assembly 45 000 BTU I3 0 Cleaning I 3 6 I Cleaning and Inspecting the Combustion Tube Assembly 13 62 13...

Page 691: ...e must be partially or fully open and the three position switch set to HEATER This will start the fuel flow and ignite the burner simultaneously With instant starting and no need for priming heat shou...

Page 692: ...STION HEATER ASSEMBLY 6 FRESH AIR OUTLETS 7 HEATER OUTLETS 8 DEFROSTER OUTLETS 9 DEFROSTER BLOWER 10 HEATER AND DEFROSTER CONTROL ASSEMBLY ON SIN S 34 807260 AND UP 0 rf 8 Ji L 3 21 x I r HEATED AIR F...

Page 693: ...n the fan position for two minutes Then place the heater switc h in the off position g Place the master switch in the off position h Install a 0 10 psi pressure gauge at the fuel drain aft of the heat...

Page 694: ...on chamber tangent to its surface and imparts a whirling or spinning action to the air This produces a whirling flame that is stable and sustains combustion under the most adverse conditions because i...

Page 695: ...IP 6 PRESSURE SWITCH 7 ELBOW ADAPTER 8 COMBUSTION AIR BLOWER AND MOTOR 9 AIR INLET TUBE 10 AIR DUCT HOSE 11 WATER DRAIN TUBE 12 HEATER CLAMP 13 SPARK PLUG 14 HEATER FUEL DRAIN TUBE HOT FUEL DRAIN 15 F...

Page 696: ...RATOR 3 IGNITION COIL 4 IGNITION UNIT 5 TERMINAL STRIP 6 PRESSURE SWITCH 7 ELBOW ADAPTER 8 COMBUSTION AIR BLOWER ANO MOTOR 9 AIR INLET TUBE 10 AIR DUCT HOSE 11 WATER DRAIN TUBE 12 HEATER CLAMP 13 SPAR...

Page 697: ...ater 13 11 VENTILATING AIR BLOWER This blower is attached to the inlet end of the heater assembly and provides a source of ventilating air through the heater Ram air from the ventilating air intake sc...

Page 698: ...n peak operating condition These inspections assume that a heating system includes accessory components mentioned in preceding paragraphs 13 15 INSPECTION OF HEATER AND HEATER COMPONENTS a Inspect all...

Page 699: ...E MANUAL A360 CONTROL CABLE ATTACHMENT ADJUSTMENT SCREW Figure 13 5 Fuel Regulator and Shutoff Valve Figure 13 6 Top View Duct Switch THIS SPACE INTENTIONALLY LEFT BLANK Revised 12 08 83 2J16 HEATING...

Page 700: ...ctions possible chafing of insulation and security of attachment points e Inspect the high voltage cable connection at the spark plug to make sure it is tight Also examine the cable sheath for any pos...

Page 701: ...he heater and remove the heater from the airplane The exhaust shroud should remain in the airplane k With the heater removed the necessary maintenance may be performed as required 13 19 INSTALLATION O...

Page 702: ...he heater and remove the heater from the airplane The exhaust shroud should remain in the airplane k With the heater removed the necessary maintenance may be performed as required 13 21 INSTALLATION O...

Page 703: ...tests are listed as an aid in isolating open circuited or inoperative components NOTE The schematic wmng diagram Figures 13 7 13 8 and 13 9 shows in addition to the heater circuitry the aircraft cont...

Page 704: ...following locations Refer to Figure 13 8 1 Terminal No 6 on the heater terminal strip if the air valve is open 2 From terminal No 6 of the heater terminal strip through the radio noise filter to the v...

Page 705: ...ide of the HEATER SWITCH I Terminal No I of the heater terminal strip if the air valve is open 2 From terminal No I of the heater terminal strip through the radio noise filter to the combustion air mo...

Page 706: ...utator with compressed air If the commutator is grooved in the brush track gouged scored or shows signs of having burned spots replace the complete motor assembly If the commutator is in good conditio...

Page 707: ...ead at the quick disconnect terminal 7 Connect the ground lead securely to the mounting bracket 8 Check motor operation By disconnecting the wire at the No 3 terminal on heater terminal strip blower c...

Page 708: ...a cloth wet with carbon tetrachloride If after cleaning the spark plug porcelain is white and the electrodes are not eroded proceed to check the ground electrode in the heater and adjust the spark gap...

Page 709: ...3 Slide the rod of the tool into the combustion head until it contacts the ground electrode 4 Check that the indicator ring on the rod lines up with the end of the tool The ground electrode may be ben...

Page 710: ...plug end of the heater 2 Install the four screws and lock washers Tighten the screws securely 3 Carefully connect the high voltage lead to the spark plug Refer to Paragraph 13 28 c 4 Connect the prim...

Page 711: ...gnition unit do not use a screwdriver as a substitute for a spark plug and spark plug fixture e The high tension shielded ignition lead between the ignition unit and the spark plug is a part of the co...

Page 712: ...lead assembly to cover Ignition cable grommet terminal and connector for carbon tracks cracks or distortion Repair or replace for any of above conditions 4 Ignition Coil Inspect for broken bakelite ca...

Page 713: ...ws securely then reconnect the electrical leads in accordance with markings made during disassembly Refer to wiring diagram Figure 13 7 3 Install the cycling switch 24 Figure 13 18 by placing it in po...

Page 714: ...AND SHUTOFF VALVE Refer to Figure 13 1 The fuel regulator and shutoff valve is located below the floor panel between the main and rear spar on the right side of the cabin It is enclosed in a special f...

Page 715: ...Test 13 44 HEATER FUEL PUMP MAINTENANCE Refer to Figure 13 15 The maintenance required for this type of fuel pump is very limited consisting of inspection and replacing parts that are worn or broken 1...

Page 716: ...iner from tube e Remove washers 8 O ring seal 7 cup valve 6 plunger spring 5 and plunger 4 from the tube 2 13 47 CLEANING OF PUMP a Wash all parts in cleaning solvent and blow out with air pressure b...

Page 717: ...ump inlet c Connect the electrical lead from the pump d Operate the heater to make sure the unit is functioning properly Refer to Paragraph 13 5 Heater System Operational Test e Replace all access ove...

Page 718: ...emove the four screws and lock washers to release the terminal strip 35 and insulator 36 from the jacket 5 i Disconnect the tube fitting 33 at the cover of the combustion air pressure switch 26 Refer...

Page 719: ...Remove the outlet adapter 5 by removing the two screws 6 and lock washers 7 c Remove the inlet flange 8 by removing the three screws 9 and lock washers 10 d Remove screws 12 and 16 and lock washers 1...

Page 720: ...used The solution should be maintained at a temperature of between 190 F and 210 F After soaking overnight rinse the combustion tube assembly thoroughly in water to remove all traces of the Oakite sol...

Page 721: ...ble to store the nozzle in a polyethylene bag until ready for reassembly j Replace the nozzle at overhaul NOTE The nozzle 21 can be spray tested by installing it in the holder and connecting the fuel...

Page 722: ...13 39 a Step 1 for precaution on tube bending Unscrew and remove the combustion air pressure switch 26 from the combustion air inlet tube j Remove vent air inlet adapter 16 from the blower housing by...

Page 723: ...uts 17 lock washers 00 and flat washers 16 and slide the inner housing 8 off the motor through bolts The spacer 15 will drop out e Install new motor brushes as described in Paragraph 13 27 b If the mo...

Page 724: ...L CAP DRILL FOR BOLT i FLAT WASHER BOLT FF r EXPANSION PLUG Figure 13 16 Suggested Design for Seal Plates Plugs and Caps for Combustion Tube Leakage Test l WATER MANOMETER 2 OHMMETER 3 NEEDLE VALVE 4...

Page 725: ...e rinsing water for as long as l 2 hour while occasionally agitating it to circulate the water All openings should be left open during this operation Be sure to dry the combustion tube assembly thorou...

Page 726: ...omized fuel away from fire k Inspect the nozzle holder assembly for damaged threads at the fuel tube fitting and for crimped or cracked fuel line or distorted housing Check the solenoid for continuity...

Page 727: ...mbustion tube assembly in water for several minutes while watching for bubbles which would indicate leaks No air leakage is permitted from the combustion tube assembly No weld or braze repairs are per...

Page 728: ...GASKET LIMIT SWITCH GASKET GASKET GASKET GASKET ASBESTOS PLUG SPARK ELBOW ELBOW HEATER ASS EMBLY IGNIGION ASSEMBLY VIBRATOR IGNITION COIL IGNITION JACKET ASSEMBLY HEAD ASSEMBLY COMBUSTION TUBE ASS EM...

Page 729: ...ASSEMBLY FUEL SHROUD UPPER 26 SWITCH PRESSURE BL OWER ASSEMBLY VENT AIR 2 7 GASKET LIMIT SWITCH HOUSING BLOWER 2 8 GASKET MOTOR ASSEMBLY VENT AIR BLOWER 29 GASKET CAP BRUSH ASSEMBLY 3o GASKET BRUSH AS...

Page 730: ...the switch closed solenoid valve energized and the fuel line connected observe the fuel spray pattern It should be conical in shape with even dispersion in all directions WARNING Be sure to keep the...

Page 731: ...ropriate voltage to run the motor as a final clearance check h Attach the inlet adapter 16 to the end of blower housing 12 with three screws and lock washers i Place a new rope gasket 31 in position o...

Page 732: ...blower housing in position on the jacket assembly 5 and secure it by installing the four screws 20 if removed at disassembly This operation is easier if the screws 20 are started into their threads a...

Page 733: ...on the jacket assembly and install screws to secure it at the seam Solenoid lead wire is grounded under one of these screws See notations made during disassembly Make sure the seam is in good conditi...

Page 734: ...NG BLOWER 16 SCREW AN530 6R6 17 WASHER AN936A6 18 GASKET BACK PLATE 19 FAN COMBUSTION AIR BLOWER 20 PLATE BACK 21 NUT AN345 10 22 WASHER AN960 I0L 23 WASHER AN936 3 0 24 SPACER 25 MOTOR ASSEMBLY COMBU...

Page 735: ...BLOWER 8 HOUSING BLOWER INNER HALF 9 STRAP CABLE I 0 CAPACITOR I I BRUSH ASSEMBLY 12 CAP BRUSH ASSEMBLY Cr 18 CD 21 y 22 J _ 23 13 MOUNT COMBUSTION Al R BLOWER SUPPORT 14 ELECTRICAL LEAD 15 SPACER 16...

Page 736: ...ith the screws Ascertain that the grommet 40 is installed 13 68 REASSEMBLY OF COMBUSTION AIR BLOWER ASSEMBLY 45 000 BTU Refer to Figure 13 21 a Place the spacer 15 over the end of the motor shaft and...

Page 737: ...2V DC Figure 13 22 Suggested Setup of Heater Operation Test ___________ _ t2VDC OVERRIDE SWITCH OPTIONAL I I ADJUSTABLE L J DUCT SWITCH RADIO NOISE FILTER FUEL PUMP 1 VENT I BLOWER I I r 1 1 L I J T I...

Page 738: ...outlined in the wiring connection diagram Figure 13 23 The power supply switch should be open d Connect the power source to the heater e Disconnect wire lead from terminal No 3 on the heater side of h...

Page 739: ...g 12 to disengage the ventilating air blower from the end of the heater jacket It is not necessary to disconnect the electrical connections to remove the nozzle 21 b Remove the fuel shroud cover 10 by...

Page 740: ...A HOLE _ tet MM THREAD 875 HEX STOCK 1 o 1 MATERIAL CAN BE SAE TYPE 303 321 OR 347 ST ST OR ALUMINUM CASE HARDENED Reissued 10 11 79 NOTE This tool can be purchased from Piper Aircraft Corporation und...

Page 741: ...13 40 When making the fuel pressure check be sure fuel is flowing through the nozzle The fuel regulator can be adjusted Turn the adjusting screw clockwise to increase fuel pressure and counterclockwi...

Page 742: ...open Defective output due to low voltage switch or low combustion and correct it If switch air blower output is defective replace it Refer to Paragraphs 13 17 a and 13 39 Cycling switch open Replace i...

Page 743: ...r Combustion air blower Faulty wiring to motor Inspect and replace fails to run faulty wiring Poor ground connection Tighten ground screw Wom motor brushes Replace motor brushes Refer to Paragraph 13...

Page 744: ...ing the lead to the heater jacket This can result in damage to the lead and ignition unit and the operator may receive an electrical shock Loose primary connection Tighten the connection at ignition a...

Page 745: ...uel noz Remove nozzle for clean zle orifice ing or replacement Re fer to Paragraph 13 73 Nozzle loose in retainer Tighten or replace the or improper spray angle nozzle as required Re fer to Paragraphs...

Page 746: ...3 38 and 13 72 Low voltage Attach external power Heater fails to shut off Fuel solenoid valve in Remove and replace sole heater stuck open noid assembly Refer to Paragraphs 13 53 or 13 58 q 13 57 or 1...

Page 747: ...PIPER SENECA II SERVICE MANUAL XIII HEATING AND VENTILATING 01 01 09 2L16 GRIDS 2L16 THRU 3A2 INTENTIONALLY BLANK...

Page 748: ...PIPER SENECA II SERVICE MANUAL 3A3 SECTION XIV ACCESSORIES AND UTILITIES...

Page 749: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK 3A4...

Page 750: ...Alignment of Slip Ring Assembly 3A18 14 18 Replacement of Slip Ring Assemblies 3A18 14 18a Replacement of Brush Block with Modular Brush Assemblies 3A21 14 18b Brush Module Replacement 3A21 14 19 Dei...

Page 751: ...ation of Deicer 3C2A 14 56 Mounting Deicer on Leading Edge 3C2A 14 57 Adhesion Test 3C4 14 58 Maintenance 3C4 14 59 Icex Application 3C5 14 60 Resurfacing Conductive Cement 3C5 14 61 Ice Detection Lig...

Page 752: ...96 Malfunction Detection 3D2 14 97 Special Servicing Procedures 3D3 14 98 Service Valves 3D4 14 99 Test Gauge and Manifold Set 3D5 14 100 Checking the System for Leaks 3D7 14 101 Leak Check Method I...

Page 753: ...4 131 Overhead Vent Blower 3D23 14 132 Description 3D23 14 133 Removal of Blower Assembly 3D23 14 134 Disassembly of Blower Assembly 3D23 14 135 Reassembly of Blower Assembly 3D23 14 136 Installation...

Page 754: ...e utilized on the two blade propeller installation Each deicer has two separate heaters one for the outer half and one for the inner half By heating all outer or inner heaters on only one propeller at...

Page 755: ...fore important that the correct replacement part number be used if replacement should be required In the event of low aircraft battery voltage very possible in ground checks the ammeter readings will...

Page 756: ...diagram Figure 14 8 for assistance to check voltages or continuity 14 8 HELPFUL TIPS a If the ammeter reading drops to one third normal current this indicates that one heater circuit is open or on th...

Page 757: ...L OCK 4 TIMER 5 AMMETER 6 SHUNT 7 SWITCH 8 WIRING 9 CIRCUIT BREAKER 10 AIRCRAFT POWERSOURCE Re issued 10 11 79 2 3 PIPER SENECA JI SERVICE MANUAL RREWAU CONNECTOR Figure 14 1 Propeller Deicing Install...

Page 758: ...___ __J PHASE 1 Figure 14 2 Electrical Diagram Showing Cycle Sequence Phase I ELECTRICAL OIAGRAM SHOWING CYCLE SEQUENCE p P_IM_ A_ _F_O_R_1_4_VO_L_T_I_Y_S_TE_M_ I I E I I I y U t L__ 7 I 1 I I L _ Rei...

Page 759: ...PHASE 3 I I I I I L _J Figure 14 4 Electrical Diagram Showing Cycle Sequence Phase III ELECTRICAL DIAGRAM SHOWING CYCLE SEQUENCE r I I I P _ _A_ _F_O_R_14_v_o_L_T_s_v_n_E_M_ AMMETER PHASE 4 SLIP RINGS...

Page 760: ...than the 34 second flicker of cycling indicates a short or open that must be located and corrected 14 11 100 HOUR INSPECTION a Remove cowling in accordance with Removal of Engine Cowling Section VIII...

Page 761: ...slip ring 2 Check for proper clearance of brush block to slip rings as shown in Figure 14 10d If not correct loosen mounting screws and move in elongated holes to correct block position before tighte...

Page 762: ...brush retainer assembly from guide block Note orientation of terminals NOTE When separating brush retainer block guide block and brush retainer assembly move guide block laterally to disengage dowel...

Page 763: ...all bolts 14 15 ALIGNMENT OF NEW BRUSHES Any time the brush block assembly is dismounted the alignment at reinstallation must be checked as described in Paragraph 14 11 and Figure 14 7 NOTE A brush al...

Page 764: ...F 0 5AMP B 1 l D4A TWO BLADE PROPELLER SHUNT D 1 D5A 83 SWITCH SWITCH SERIAL NUMBER 34 7900001 AND UP WITH OPTIONAL THREE BLADE PROPELLER LEFT PROPELLER RIGHT PROPELLER LEFT PROPELLER RIGHT PROPELLER...

Page 765: ...COLUMN INDICATES 3 t INCH OF BRUSH REMAINS1 THE X DIMENSION FOR THE MUST REPLACE COLUMN INDICATES 1 4 INCH REMAINS DURINQ MEASUREMENT ON 1 H INCH OF BRUSH SHOULD BE ALLOWED TO PROTRUDE FROM BRUSH BLO...

Page 766: ...enter module as shown in Figure 14 10a NOTE Ascertain flat washer is positioned between star washer and housing d Reconnect aircraft wire harness and ensure adjacent ring terminals are not touching e...

Page 767: ...PJPER SENECA II SERVICE MANUAL Figure 14 10 Brush Module Assembly 3E201 L Figure 14 l0a Alternate Module Stacking Arrangement INTENTIONALLY LEFT BLANK Reissued 10 11 79 3A22 ACCESSORIES AND UTILITIES...

Page 768: ...Lockwasher 9 Nut Figure 14 l0b Modular Brush Assembly 3E2042 l 2 Bladed Prop 2 7 8 1 Brush Module Assembly 3E2011 2 2 Brush Module Assembly 3E2011 3 3 Spacer 4E2218 3 4 Spacer 4E2218 4 5 Screw MS 246...

Page 769: ...Angle of Contact Brushes to Slip Rings XIV ACCESSORIES AND UTILITIES 01 01 09 3A24 Figure 14 10e Align Tool IRUSH ILOCK ASSY 1 16 I 1 3 8 I 1 4 ONLY CRITICAL DIMENSIONS SHOWN PORTIOH 01 STARTER RIHG...

Page 770: ...9 STRAP BUCKLE 10 MOUNTING STRAP 11 WIRE COVER TUBING 12 WINDOW SPLICE TERMINALS 13 TIE STRAP 14 HARNESS 15 SHUNT 16 MODULAR BRUSH ASSEMBLY Reissued 10 11 79 PIPER SENECA II SERVICE MANUAL HARTZELL 2...

Page 771: ...23 BLADE PREPARATION a Mark and cut from masking tape a pattern the size of the propeller deicer Refer to Figure 14 12 b Place a mark at the hub end of the blade in line with the blade leading edge T...

Page 772: ...r 82 076 1 and 2 B F Goodrich Akron Ohio or Scaler C 19861 C 21871 and C 16176 Lowe Bros Dayton Ohio Cleaning Solvent MEK MethylEthylKetone or Acetone Tackifying Solvent Toluol or MEK See Note Cleanin...

Page 773: ...ed exactly to insure maximum adhesion to the propeller blades a When the cement coats are tacky slightly sticky to the touch like masking tape dry on both the propeller surface and deicer surface posi...

Page 774: ...f an inch beyond the cemented area around the deicer to permit filler material to contact bare metal f Apply one even coat of filler to area around the inboard end and sides of the deicer Refer to Fig...

Page 775: ...k the electrical resistance of each of the two elements within the deicer Refer to Schematic Figure 14 8 and Resistance Readings Refer to Table XIV III b Check for intermittent open circuits by tensio...

Page 776: ...8 1 8 1 2 n 1 4 lL DE ICER CEMENTED AREA FILLER 82 075 A B OR SEALER EC 801 Figure 14 14 Sealer Application Boot TABLE XIV III ELECTRICAL RESISTANCE Resistance Check Max 1 Blade each Element 1 15 2 Bl...

Page 777: ...timer ammeter or switch If inoperative these components must be replaced with one of the correct part numbers For any other repair or maintenance problems not covered in this manual inquire at Aerospa...

Page 778: ...at switch faulty output with voltage at switch input replace the switch If voltage is satisfactory at switch output go to next step Ammeter faulty If Test for voltage up to some or all deicers heat an...

Page 779: ...ck assembly and brush block wire harness deicer lead straps plug try voltage at junction to deicer lead and slip ring lead If no voltage find and correct open in wiring within brush block or no contac...

Page 780: ...into switch rent over entire cycle Ammeter faulty Test for voltage up to and out of ammeter If low or zero output and input sat isfactory replace am meter If no voltage to ammeter locate and fix open...

Page 781: ...cycle excess brush block block and with ohmmeter current rest of cycle check from power leads to ground If ground is in dicated locate and cor rect Ground between brush If no short exists at block and...

Page 782: ...sing original failure has been located and corrected Ammeter flicks between Loose connection between If trouble occurs over 34 second phase periods aircraft power supply and entire cycle trace wiring...

Page 783: ...an ma chine or replace slip ring assembly as required Check slip ring alignment Refer to Paragraph 14 17 Loose connection Refer to Ammeter flicks between 34 second phase period Switch faulty Try jumpe...

Page 784: ...RD 7 MANIFOLD 8 CHECK VALVES 9 REGULATOR 10 COPILOT GYRO INSTRUMENT 11 PRESSURE GAUGE 12 DUAL STAGE PRESSURE REGULATING VALVE 13 TIME MODULE 14 EJECTOR FLOW CONTROL VALVE 15 PRESSURESWITCH 16 TAIL DEI...

Page 785: ...D 7 MANIFOLD 8 CHECK VALVES 9 REGULATOR 10 COPILOT GYRO INSTRUMENT 11 PRESSURE GAUGE 12 DUAL STAGE PRESSURE REGULATING VALVE 13 TIME MODULE 14 EJECTOR FLOW CONTROL VALVE 15 PRESSURE SWITCH 16 TAIL DEI...

Page 786: ...erboard System vacuum is then reapplied to the boots to hold them close to the surface skin Should reactivation of the boots be required the momentary ON type switch is moved to the ON position again...

Page 787: ...____ i _ _ Figure 14 16 Pneumatic Deicer Boots Operation EXHAUST VALVE _l GREEN 1 IBLUE t RED E3 1f DIOB Dl2A PRESSURE SWITCH Figure 14 1 7 Pneumatic Deicer System Schematic DE ICER BOOTS 10 AMP Reiss...

Page 788: ...inute e Remove test equipment lubricate all threads and replace all system components 14 41 PNEUMATIC REGULATOR ADJUSTMENT a Remove the left and right pressure lines to the gyro pressure gauge b Insta...

Page 789: ...low indicator toward the hose from the manifold assembly Refer to Figure 14 20 b Replace the fire wall mounted air filter 1J1 2 as follows 1 Remove hatch cover from top of nacelle to gain access to th...

Page 790: ...is not the cause of trouble or if the boots deflate slowly the lines or valves may be plugged then the lines should be disconnected and blown clear Check the timing of the system through several comp...

Page 791: ...ane deicers have subsequently been installed consult the appropriate vendor publication NOTE Goodrich Black Standard Pneumatic De Icer Installation Maintenance Repair Manual ATA Report No 30 10 31 pro...

Page 792: ...avoid trapping air pockets Thoroughly roll the patch with stitcher roller Part No 74 451 73 and allow to set for ten to fifteen minutes 4 Wipe the patch and surrounding area from the center outward w...

Page 793: ...4 l 880 74 451 74 6 ft roll x 6 in wide 15 ft roll x 2 in wide 4 ft long x 8 in wide 1 quart fMinnesota Mining and Manufacturing Company Adhesives Division 223 61 i 02 3M Center St Paul Ml i 55144 612...

Page 794: ...SE SURFACE PLY IN TUBE AREA Loose surface ply in tube area is usually an indication of the deicer starting to flex fail This type of failure is more easily detected in the form of a blister under the...

Page 795: ...alled as original equipment in these airplanes If the newer Estane deicers have subsequently been installed consult the appropriate vendor publication NOTE Goodrich Black Standard Pneumatic De Icer In...

Page 796: ...ean the rough back surface of the boot at least twice Change cloths frequently to avoid recontamination of the cleaned areas 14 56 MOUNTING DEICER ON LEADING EDGE Thoroughly mix EC 1403 cement before...

Page 797: ...PIPER SENECA II SERVICE MANUAL THIS PAGE INTENTIONALLY BLANK XIV ACCESSORIES AND UTILITIES 01 01 09 3C2B...

Page 798: ...boot in this position while reactivating about three inches around connections and around corresponding holes in leading edge using a clean lint free cloth moistened with Toluol Insert connections in...

Page 799: ...t in question sufficiently to attach a spring clamp b Attach a spring scale to this clamp and pull with force 1 80 to the surface and in such a direction that the boot tends to be removed on the diago...

Page 800: ...urfaces with a rag dampened with non leaded gasoline Follow by a scrub wash of mild soap and water Allow time for surfaces to dry Shake the lcex can well Hold the nozzle approximately 12 inches from t...

Page 801: ...Clean deicer thoroughly with Isopropyl Acetate a Roughen entire surface of boot using a fine grit sandpaper b Clean surface again with clean lint free cloth moistened with cleaning solvent c Apply ma...

Page 802: ...ical test functioning Check for sticking poppet Clean Lines blocked or not Blow out lines and inspect connected connections Make air leakage test Lines partially blocked Blow out lines and inspect or...

Page 803: ...UMATIC DEICER SYSTEM cont Cause Remedy Indicator lamp burned Replace lamp out System pressure not being Check deicers inflate reached slowly above Pressure switch not Make electrical test and function...

Page 804: ...e light is positioned in the nacelle to illuminate the leading edge of the wing when the switch is activated in the cockpit 14 64 SERVICING The only service required of this unit is the replacement of...

Page 805: ...INSTALLATION OF HEATED PANEL a Disconnect the electrical connector located next to the heated panel on the exterior side of the windshield by removing the two screws and pulling the plug out of the r...

Page 806: ...t 70 F The oxygen supply gauge is mounted in the aft overhead vent duct The oxygen flow control knob labeled Pull On is mounted in the pilot s overhead panel The pressure regulator is mounted directly...

Page 807: ...NCE WARNING FAILURE TO CONSULT APPLICABLE VENDOR PUBLICATION S WHEN SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER AIRCRAFT MAY RENDER THE AIRCRAFT UNAIRWORTHY SEE INTRODUCTION SUPPLEMENT...

Page 808: ...Use 2 Each 5 Years 3 External Recharge Valve On Condition Each Use 2 Replace on Condition 4 Masks On Condition Each Use 2 Each 5 Years 1 Visual inspection for dents bulges corrosion or chafing and se...

Page 809: ...pilot s outlet 3 Connect additional flow test apparatus or equivalent to each of the other outlets and pull the oxygen control knob to the ON position The pressure and flow at sea level should be 55 t...

Page 810: ...s and tubes which have imperfect threads pitted or disfigured cones or other damage should be replaced CAUTION OXYGEN TUBES MUST NOT BE CLAMPED TO OR SUPPORTED BY ELECTRICAL WIRE BUNDLES HYDRAULIC PNE...

Page 811: ...xygen tube for that distance must be covered See Figure 14 20b Sketch C 4 A minimum of 1 8 inch between tubing and structure adjoining the supporting clamp as shown in Figure 14 20b Sketch A 5 Where a...

Page 812: ...V ACCESSORIES AND UTILITIES 3C17 8871 t 119 MIN SKETCH A 1 MIL I 631 TYPE F FORMULA GRADE C CLASS 2 CATEGORY 1 PLASTIC SLEEVING OR NEO PRENE HOSE MAY BE SLIT TO FIT OVER TUBING SECURE WITH MS3367 CABL...

Page 813: ...preswaging tool and insert the tube until it firmly bottoms on the shoulder in the tool The preswaging tool can be attained from Crawford Fitting Company refer to List of Consumable Materials in Chap...

Page 814: ...UT ONTO THE FITTING FINGER TIGHT AND INSERT THE TUBE UNTILL IT BOTTOMS FIRMLY ON THE SHOULDER IN THE FITTING 12 11 2 _ _ _ _ _ 7 5 6 STEP 3 HOLD THE FITTING WITH A WRENCH AND TIGHTEN THE FITTING NUT A...

Page 815: ...ill form a white foam in 5 to 60 seconds d With outlets vacated of masks connect a test pressure gauge Figure 14 20b to the copilot s outlet Figure 14 20 as described in Inspection and Maintenance abo...

Page 816: ...previous caution c Flush with isopropyl alcohol d Rinse thoroughly with fresh water e Dry with air as described in previous caution or by heating at a temperature of 250 to 300 F for one half hour NOT...

Page 817: ...ECTING ANY LINES FROM THE REGULATOR 2 Remove the oxygen cylinder shroud clamps 3 Remove control cable from the regulator assembly 4 Remove the two screws securing the halves of the oxygen cylinder shr...

Page 818: ...09 XIV ACCESSORIES AND UTILITIES 3C22A Figure 14 21 Oxygen Cylinder and Regulator Assembly 1 REGULATOR VALVE 2 OXYGEN CYLINDER 3 SHROUD CLAMP 4 SHROUD CLAMP 5 SHROUD 6 CONTROL CABLE 7 LOW PRESSURE 8 H...

Page 819: ...pressure line from the oxygen pressure gauge fitting c Loosen and remove the retainer nut and clamp securing the gauge to the bracket and remove the gauge 14 83 INSTALLATION a Place the gauge in its...

Page 820: ...filler valve 3 e Remove the three screws washers and nuts which secure the filler valve 3 to the dish assembly 6 and remove the filler valve 14 86 INSTALLATION a Place the valve into position and secu...

Page 821: ...ot over torque as this could damage the outlet 14 90 FACE MASKS Portable System 14 91 CLEANING The disposable masks are designed for one time use and require no maintenance The pilot s and copilot s m...

Page 822: ...g of oxygen systems should be done by qualified personnel For comparison of filling pressures to ambient temperatures refer to Table XIV VIIIA The following are parameters to be followed for filling a...

Page 823: ...only the one storage cylinder with the lowest pressure When the pressure indicated on the aircraft s oxygen gauge and charging gauge has become equal close the valve of the storage cylinder then go to...

Page 824: ...leaks gauge exhausted pressure Pressure gauge defective Replace pressure gauge Defective regulator Replace regulator Pressure indication Oxygen cylinder regulator Replace regulator normal but no oxyge...

Page 825: ...PIPER SENECA II SERVICE MANUAL XIV ACCESSORIES AND UTILITIES 01 01 09 3C22H THIS PAGE INTENTIONALLY BLANK...

Page 826: ...he condenser door is auto matically retracted 14 95 AIR CONDITIONING SYSTEM OPERATION The air conditioning system in this airplane is a recirculating independent unit It filters dehumidifies and cools...

Page 827: ...I I I i T 7 i 1 0 I I j I CONDENSU I I _____ AIR COND CONTROL AIR COND FAN TEMP ON I _________j VIEW A A i _ i I I _ EVAPORATOR AHO DUCT ______ _ Figure 14 24 Air Conditioning System Installation Revi...

Page 828: ...3 16 134 73 19 7 18 137 74 21 20 140 75 22 4 22 144 76 23 1 23 148 77 23 8 24 152 78 24 6 25 156 79 25 3 26 160 80 26 1 27 162 81 26 8 28 165 82 27 6 29 167 83 28 4 30 170 84 29 2 31 172 85 30 32 175...

Page 829: ...readings will be about one inch of mercury or 1 2 psi higher than the chart indicates It must be pointed out that the actual temperature of the air passing over the coils of the evaporator will be sev...

Page 830: ...kin frostbite can occur Treat with cool water and protect with petroleum jelly 4 Do not discharge large quantities of R 12 into closed rooms It may displace most of the air in the room and this could...

Page 831: ...8 21 27 ft lbs 3 4 1 1 16 28 33 ft lbs 14 98 SERVICE VALYES The purpose of the service valve is to service the air conditioning system Testing Bleeding Evacuating and Charging This aircraft is equipp...

Page 832: ...oth gauges and connection hoses with provisions for controlling the flow of refrigerant through the manifold See Figures 14 25 and 14 26 The center port of the manifold set is used for charging or eva...

Page 833: ...PIPER SENECA II SERVICE MANUAL DIAGRAM A DIAGRAM B DIAGRAM C DIAGRAM D Figure 14 26 Manifold Set Operation Reissued 10 11 79 ACCESSORIES AND UTILITIES 3D6...

Page 834: ...e refrigerant to escape from the connections at the service valves Then tighten connections at the service valve c Close the low side manifold valve and open the high side manifold valve d Open the re...

Page 835: ...ore J23500 or similar charging station Refer to Figure 14 29 a Close all valves on charging station b Connect red high pressure charging line to high pressure Schrader valve at the evaporator fitting...

Page 836: ...RCURY VACUUM 29 71 29 82 29 88 NOTE For each 1 000 feet of elevation above sea level the compound gauge reading will be about one inch lower numerically The following steps should be of help when perf...

Page 837: ...uum pump and disconnect center manifold hose from the vacuum pump k Proceed to charge the system in accordance with Paragraph 14 105 NOTE The system should be charged as soon as it has been evacuated...

Page 838: ...essure gauge This scale should be used during entire charging operation g Close valve 1 low pressure control fully open valve 4 refrigerant control and allow all the liquid refrigerant contained in th...

Page 839: ...refrigerant has been added to the system g With the system still operating observe the sight glass in the top of the receiver dehydrator by removing the plastic plug h The sight glass should be clear...

Page 840: ...the sight glass remains clear during system operation j When the sight glass stays clear of bubbles add an additional I 4 pound ofrefrigeran to the system Engine should be operating at l000 RPM NOTE...

Page 841: ...tension of 85 to 90 pounds Torque the four attachment bolts 300 to 350 inch pounds Refer to Paragraph 14 113 c Check the oil level in the compressor in accordance with instructions given in Paragraph...

Page 842: ...STING MARK SHOWING ROTOR AT TOP DEAD CENTER Figure 14 31 Top Dead Center Casting Mark Sankyo Compressor DIPSTICK CLUTCH FRONT PLATE TURN CLUTCH FRONT PLATE CLOCKWISE BY 110 APPROXIMATELY Figure 14 32...

Page 843: ...e operated during ground servicing the test area should be clean and free of any loose objects lying on the ramp Only the service valve located on the evaporator assembly should be used for testing c...

Page 844: ...ONDENSER REMOVAL a Remove the hatch cover assembly b With the system completely discharged disconnect the suction and discharge hoses at the condenser fitting See Paragraph l4 97 B 7 NOTE Cap the open...

Page 845: ...switch to the low or high position The scoop and vent door opening dimensions can be checked by the following outlined procedure I Place the fan switch to the low or high position 2 Depress the air c...

Page 846: ...ROD CONDENSER SCOOP 4 74 5 ACTUATING ROD VENT DOOR 13 84 6 LIMIT SWITCH GROUND POSITION 7 LIMIT SWITCH FLIGHT POSITION 8 LIMIT SWITCH FLIGHT POSITION 9 LIMIT SWITCH CLOSED POSITION 10 MOTOR 11 BEARING...

Page 847: ...oil from the outlet line Do not link the capillary tube c Uncouple all related tube fittings See Paragraph 14 97 8 7 NOTE If tltis part is not serviceable it must be replaced with a new part 14 124 EX...

Page 848: ...ATION a Cement gasket in place on the flanges of the evaporator housing and attach the large end of the mounting gasket to the back of the housing b Install the housing through the access hole with th...

Page 849: ...ut in at 250 lOpsi NOTE Before the relief switch is removed the air conditioning system must be discharged See Paragraph 14 34 14 129 ELECTRICAL INSTALLATION The electrical system routing and componen...

Page 850: ...e by removing the nuts washers and bolts 14 135 REASSEMBLY OF BLOWER ASSEMBLY a Mount the motor on the plate and secure it with the bolts washers and nuts Be sure that the motor nuts are snug and the...

Page 851: ...the harness completely then measure and mark the harness 24 inches from the reel center d Wind the harness onto the reel until the 24 inch mark is reached then hold reel and place cap with spring over...

Page 852: ...Instrument Panel Instrument Panel Instrument Panel Left Engine Nacell Left Engine Nacelle Terminal Strip Terminal Strip Left Engine Nacelle 19 t I 14 181 FLT CLOSE LIMIT SW _ S5 FLT OOEN 0 LIMIT SW 1...

Page 853: ...tor Check that capillary indicated by heavy bulb is securely frosting on suction clamped to suction line and compressor line If capillary suction service valve bulb OK replace expansion valve Restrict...

Page 854: ...valve Valve will show dicating evaporator frost Expansion valve lacks refrigerant inlet screen clogged Remove screen Inoperative expansion Clean with solvent valve Valve stuck and replace Wann closed...

Page 855: ...le Cause Remedy Door will not close Faulty relay K 2 Replace relay when air conditioner switch is in OFF position System produces no Electrical cooling Blown fuse in Replace fuse control head Open cir...

Page 856: ...or replace if inoperative Mechanical Loose or broken drive Replace drive belts belt and or tighten to specifications Compressor partially Remove compressor for or completely frozen service or replacem...

Page 857: ...eration for service or re placement Mechanical Compressor clutch Remove clutch assembly slipping for service or replace ment Obstructed blower Examine entire passage passage for obstruction Correct as...

Page 858: ...pressor for service or replacement Compressor oil level Fill with correct low amount of specified oil Refrigeration Excessive charge in Discharge excess freon system until high pressure gauge drops wi...

Page 859: ...in Purge system replace receiver dehydrator receiver dehydrator Excessive mositure Purge system replace in system receiver dehydrator Air in systern Purge evacuate and charge system Re place receiver...

Page 860: ...hase angle of the propellers can be adjusted by rotating the switch in the Phase Adjustment range to obtain the smoothest operation 14 140 SYSTEM OPERATING PROCEDURE The selector switch must be in the...

Page 861: ...light not operating open circuit or wire on Pin Number 8 is grounded f Coil short light operating short circuit in governor solenoid coil or a short between coil leads 14 142 GROUND CHECKS a Disconne...

Page 862: ...R l J J 1 7 I I I I I I L __ J i KB2A __ I L r I I I I L _ _ _ _ J RIGHT GOVERNOR RIGHT PULSE GENERATOR I I 84 KB5A KB6A KB3A LEFT PULSE GENERATOR SYNCHROPHASER I I I IL I L ____ J Figure 14 37 Synchr...

Page 863: ...J H C B PANEL KB2A l J I l J I I I I L __ J I I I _____ _ _ I I ____ _ L J RIGHT GOVERNOR KB4 KB A I I GENERATOR K86A LEFT PULSE GENERATOR I i I I ___ __ I I ______ Figure 14 37a Synchrophaser Wiring...

Page 864: ...p C 18 AUTO SYNCH FIXED PHASE INSTALLATION SECTION A A 7 WIRING HARNESS 8 TACH DRIVE 9 SLAVE GOVERNOR ASSEMBLY 10 CONTROL PEDESTAL 11 SYNCHROPHASER CONTROL SWITCH 12 SYNCHROPHASER POTENTIOMETER CONTRO...

Page 865: ...other Return the mode switch to the AUTO SYNC position If synchronization is again not attained repeat 14 143 above then repeat flight check NOTE Place synchrophaser mode switch in manual position fo...

Page 866: ...pulse generator and remove the shafts from the pulse generator assembly d Remove the two hex nuts 9 tab washers 7 and washers 4 e Loosen the screws and nuts securing the mounting brackets 5 6 to the e...

Page 867: ...rating head This interrupts the flow of extinguishant thus retaining part of the charge for dealing with a flash back or re ignition should they occur without waste or leakage A partly or totally disc...

Page 868: ...PIPER SENECA II SERVICE MANUAL 01 01 09 XIV ACCESSORIES AND UTILITIES 3E17 THIS PAGE INTENTIONALLY BLANK...

Page 869: ...PIPER SENECA II SERVICE MANUAL XIV ACCESSORIES AND UTILITIES 01 01 09 3E18 END...

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