Each landing gear is retracted and extended by a single hydraulic cylinder attached to the drag link
assembly of the nose gear, and the side brace link assemblies of each main gear. As the gear retracts,
doors partially enclose each gear through mechanical linkage. Each main gear is held in its up position
by hydraulic pressure on each cylinder. There are no uplocks, and loss of hydraulic pressure will allow
the gears to drop. It is preferred that the landing gears be extended and retracted by the normal
operation of the gear selector handle. There is an emergency backup system for extending the gear,
with two (2) different type systems in this airplane. Older models have an emergency extension lever
located between the pilot seats, that when selected, releases the hydraulic pressure to the up side by
means of opening the emergency free fall gear valve. With this system, if the airspeed drops below 103
KIAS, engine power off, the landing gear will automatically extend regardless of the position of the
gear selector handle, or the emergency gear lever. A pressure sensing chamber which senses static and
ram air pressure changes, extends and retracts the landing gear automatically. The emergency extension
lever may also be used to manually overcome its automatic free fall funciton, when needed in special
situations by the pilot. A perfect example would be a deliberate wheels up landing needed for
emergency landing in water, or for special flight maneuvers requiring low airspeeds and power
settings, where automatic extension of the landing gear is not wanted.
As of model year 1986, the pressure sensing chamber has been eleminated, with the introduction of a
kit that changes the system to a non-automatic free-falling landing gear system. (Refer to service
bulletins 769 and 866A.) A gear down emergency free fall valve, located under the floorboard on the
left side of the forward baggage compartment, allows the landing gear to extend when opened by the
operation of a push pull cable knob which is located between the two pilot seats. When using the manual
extention latch or knob, the gear position is controlled by the selector switch, regardless of airspeed or
power combinations. An override latch mechanism is installed in the backup automatic gear extension
system, designed to bypass the automatic feature of the system. A flashing warning light mounted just
below the gear selector lever will light whenever the override latch is in use. Pulling up on the exten-
sion lever disengages the latch.
To help the nose gear to extend, there are two springs, one inside the other, mounted on arms above the
gear links. The main gear requires no assist springs. Once the gear is down and the downlock hooks
engage, a spring maintains each hook in a locked position until hydraulic pressure releases it. A further
description of the hydraulic system and the back-up automatic and manual extender units will be found
in chapter 29, Hydraulic System.
The nose gear is steerable through a 45 degree arc by use of the rudder pedals. As the gear retracts,
however, the steering linkage becomes disengaged from the gear so that rudder pedal action with the
gear retracted is not impeded by the nose gear operation. A shimmy dampener is also incorporated in
the nose wheel steering mechanism.
The two main wheels are equipped with self-adjusting single-piston single disc hydraulic brake
assemblies. Toe brakes are standard on both pilot and copilot’s rudder pedals. An optional heavy duty
double piston, single-disc brake, wheel and tire kit is available as an option or as a field kit (Kit No.
761-052).
A parking brake is incorporated with a handle and may be used by pulling back on or pushing forward
on, only when pushing forward a button located left of the handle. To release the hand brake, pull aft
on the handle and allow it to swing forward. Hydraulic fluid for the cylinder is supplied by a reservoir
installed on the left forward side of the firewall.
PIPER AIRCRAFT
PA-32R-301/301T
MAINTENANCE MANUAL
32-00-00
Page 32-2
Reissued: July 1, 1993
3A19
Summary of Contents for PA-32R-301T SARATOGA S
Page 26: ...CHAPTER 4 AIRWORTHINESS LIMITATIONS 1C1 ...
Page 29: ...CHAPTER 5 TIME LIMITS MAINTENANCE CHECKS 1C4 ...
Page 53: ...CHAPTER 6 DIMENSIONS AND AREAS 1D6 ...
Page 64: ...CHAPTER 7 LIFTING AND SHORING 1D21 ...
Page 68: ...CHAPTER 8 LEVELING AND WEIGHING 1E1 ...
Page 72: ...CHAPTER 9 TOWING AND TAXIING 1E5 ...
Page 76: ...CHAPTER 10 PARKING AND MOORING 1E9 ...
Page 80: ...CHAPTER 11 REQUIRED PLACARDS 1E13 ...
Page 92: ...CHAPTER 12 SERVICING 1F1 ...
Page 126: ...CHAPTER 20 STANDARD PRACTICES AIRFRAME 1G17 ...
Page 127: ...THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 139: ...CHAPTER 21 ENVIRONMENTAL SYSTEMS 1H5 ...
Page 188: ...CHAPTER 22 AUTOFLIGHT 1J7 ...
Page 193: ...CHAPTER 23 COMMUNICATIONS 1J12 ...
Page 203: ...CHAPTER 24 ELECTRICAL POWER 1J22 ...
Page 263: ...CHAPTER 25 EQUIPMENT FURNISHINGS 2A13 ...
Page 269: ...CHAPTER 27 FLIGHT CONTROLS 2A20 ...
Page 332: ...CHAPTER 28 FUEL 2D11 ...
Page 363: ...CHAPTER 29 HYDRAULIC POWER 2E18 ...
Page 404: ...CHAPTER 30 ICE AND RAIN PROTECTION 2G16 ...
Page 470: ...CHAPTER 32 LANDING GEAR 3A13 ...
Page 550: ...CHAPTER 33 LIGHTS 3D24 ...
Page 562: ...CHAPTER 34 NAVIGATION AND PITOT STATIC 3E12 ...
Page 582: ...CHAPTER 35 OXYGEN 3F8 ...
Page 604: ...CHAPTER 37 VACUUM 3G6 ...
Page 616: ...CHAPTER 39 3G18 ELECTRIC ELECTRONIC PANELS MULTIPURPOSE PARTS ...
Page 620: ...CHAPTER 51 STRUCTURES 3G22 ...
Page 636: ...CHAPTER 52 DOORS 3H14 ...
Page 650: ...CHAPTER 55 STABILIZERS 3I4 ...
Page 662: ...CHAPTER 56 WINDOWS 3I16 ...
Page 670: ...CHAPTER 57 WINGS 3I24 ...
Page 688: ...CHAPTER 61 PROPELLER 3J18 ...
Page 704: ...CHAPTER 70 STANDARD PRACTICES ENGINES 3K10 ...
Page 708: ...CHAPTER 71 POWER PLANT 3K14 ...
Page 737: ...CHAPTER 73 ENGINE FUEL SYSTEM 4A13 ...
Page 749: ...CHAPTER 74 IGNITION 4B1 ...
Page 783: ...CHAPTER 77 ENGINE INDICATING 4C11 ...
Page 793: ...CHAPTER 78 EXHAUST 4C21 ...
Page 801: ...CHAPTER 79 OIL 4D5 ...
Page 805: ...CHAPTER 80 STARTING 4D9 ...
Page 819: ...CHAPTER 81 TURBINES 4D23 ...
Page 833: ...CHAPTER 91 CHARTS WIRING DIAGRAMS 4E13 ...