5. Inspect for excess radial wear between the flyweight and axle using the 11-10041 flyweight gauge.
Insert the gauge between flyweights and against cam hub as shown in Figure 14. If the gauge cannot
be inserted easily, remove burr from edges of hub keyway with a small file. Hold the gauge firmly
against the hub, at the same time squeezing the flyweights against the gauge. If the inner end of either
flyweight heel touches the gauge, replace the cam assembly. If parts are near limits, check clearance
between flyweight and gauge with a .003 inch feeler. If flyweight heel is tight on feeler, replace the
cam assembly.
– CAUTION –
Never attempt to repair any part of a rejected cam and fly-
weight assembly.
6. Inspect ears of the coupling body for grooves worn by the tail of the flyweights and wear at the trig-
or a ridge can be felt when fingernail is drawn across the surface, replace the coupling body.
7. Inspect drive lugs of body. If wear is noted, measure difference between worn and unworn areas on
drive lug surface. If difference is in excess of .015 of an inch, replace the body.
8. With spring released and free, it should form a smooth spiral curve with no sharp bends or flat spots.
(Refer to Figure 16.) If spring is deformed, replace it.
9. Inspect spring for cracks particularly at the ends and around spring eyes. Inspect coils of spring for
excessive wear. If grooves or ridges and worn in coils or cracks are found, replace spring.
10. Inspect the housing for cracks, stripped threads or other damage. Replace if necessary.
IMPULSE COUPLING INSTALLATION.
1. Check mating cam assembly and body for magnetization which would prevent flyweights from
engaging. Hold the assembly as shown in Figure 17 and push upper flyweight against body. When
released, flyweight must drop down. If flyweight sticks to body, parts are magnetized and coupling
may not function. Perform test on both flyweights.
2. To demagnetize, place body over shaft of a charged rotating magnet and spin body rapidly by hand.
While body is still spinning, invert magnet so body falls off. Catch body in hand and repeat test for
magnetization.
3. Clamp one drive lug of the body in a padded jaw vise with the spring recess side up.
4. Orient the spring with the body for correct rotation. On clockwise couplings, the spring must coil in a
clockwise direction from the outside toward the center when viewed from the spring recess side of the
body. (Refer to Figure 18.) Insert eye of outer end of spring into hole drilled in inner rim of body.
5. Using heavy gloves to protect the hands, wind spring into body manually, lifting spring coils one at a
time over projections on body. Extreme care should be used to avoid scratching or nicking the spring.
After winding the spring, brush a coating of light oil over the spring coils.
6. Pry up one and one-half turns at the inner end of the spring with a small screwdriver and support in
position as shown in Figure 19.
7. Engage recess in the hub on the cam assembly with eye at inner end of spring. With eye engaged,
rotate cam assembly slightly in direction to unwind spring to permit hub of cam to slip into the inner
turn of the spring. Rotate the cam in the opposite direction, winding spring slightly, until projections
on edge of cam clear over the projections on the body. Push the cam assembly down into the body, at
the same time taking the screwdriver out.
PIPER AIRCRAFT
PA-32R-301/301T
MAINTENANCE MANUAL
74-10-00
Page 74-17
Reissued: July 1, 1993
4B19
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 ...