DISASSEMBLY OF MAIN GEAR ACTUATING CYLINDER. (Refer to Figure 29-7.)
1. With the cylinder removed from the airplane, push the piston rod (by hand) toward the clevis to
remove oil from the unit.
2. Put clevis in a soft jaw vise and clamp against the clevis bearing.
3. If no pipe fitting is installed in the port of the end gland, install a fitting (1/8 - 27) into the port. This
fitting need not be tight as it will be used for leverage only.
4. Rotate the gland counterclockwise (with use of fitting) until the end of the gland lock ring shows in the
slot in the cylinder body. Reverse rotation of the gland (clockwise direction) to allow the lock ring to
move out of the slot. (Refer to Figure 29-8.) (It may be necessary to give the ring an assist to start out
of the slot. If so, insert a strong wire pick or other available tool in the slot to lift up the end of the ring
and then rotate gland.)
5. Pull the piston and end gland from the cylinder.
6. Remove O-rings as desired.
CLEANING, INSPECTION AND REPAIR OF MAIN GEAR ACTUATING CYLINDER.
1. Clean the cylinder parts with a suitable dry type solvent and dry thoroughly.
2. Inspect the cylinder assembly for the following:
A.
Interior walls of cylinder and exterior surfaces of piston for scratches, burrs, corrosion, etc.
B.
Threaded areas for damage.
C.
End fitting retainer slot for excess wear.
D.
Rod end fitting and swivel fitting of cylinder for wear and corrosion.
3. Repairs to the cylinder are limited to polishing out small scratches, burrs, etc., and replacing compo-
nents. (Refer to Parts Catalog for replacement part numbers.)
ASSEMBLY OF MAIN GEAR ACTUATING CYLINDER. (Refer to Figure 29-7.)
1. Install O-ring on the exterior of the end gland.
2. Install O-ring and back-up ring in the interior of the end gland.
3. Install O-ring on the body of the piston assembly.
4. Lubricate the areas around the O-rings with hydraulic fluid, park-o-lube or vaseline; slide the end
gland on the piston rod and the piston into the cylinder housing.
5. Insert the hook end of a new lock ring (P/N 755 997) in the slot in the cylinder body and slot in the end
gland. Rotate gland counterclockwise to completely wrap lock wing into assembly.
6. Align port in end gland and cylinder body.
7. Check smoothness of operation of piston and static pressure test unit to check for possible cut O-rings.
INSTALLATION OF MAIN GEAR ACTUATING CYLINDER.
1. Attach the cylinder to its attachment fitting in the wheel well using bolt and nut.
2 . Attach the operating rod end and downlock spring swivel fitting to the upper side brace retraction fitting
by using bolt, washer and nut. Ascertain swivel fitting is free to rotate.
3. Connect the downlock spring to the swivel fitting.
4 . Check the adjustment of the cylinder rod end. (Refer to Adjustment of Main Landing Gear, Chapter 32.)
5. Operate pump to purge system of air and check fluid level in reservoir.
6. Turn master switch ON. Ensure the three green GEAR DOWN and LOCKED lights or ON. Turn
switch OFF. Remove the airplane from jacks.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
29-13-05
Page 29-26
Revised: June 20, 1995
2C21
Summary of Contents for SEMINOLE PA-44-180
Page 38: ...CHAPTER DIMENSIONS AND AREAS 1B14...
Page 49: ...CHAPTER LIFTING AND SHORING 1C1...
Page 53: ...CHAPTER LEVELING AND WEIGHING 1C5...
Page 58: ...CHAPTER TOWING AND TAXIING 1C10...
Page 62: ...CHAPTER PARKING AND MOORING 1C14...
Page 65: ...CHAPTER REQUIRED PLACARDS 1C17...
Page 70: ...CHAPTER SERVICING 1C22...
Page 98: ...CHAPTER STANDARD PRACTICES AIRFRAME 1E2...
Page 108: ...CHAPTER ENVIRONMENTAL SYSTEM 1E12...
Page 189: ...CHAPTER AUTOFLIGHT 1H21...
Page 192: ...CHAPTER COMMUNICATIONS 1H24...
Page 202: ...CHAPTER ELECTRICAL POWER 1I10...
Page 228: ...CHAPTER EQUIPMENT FURNISHINGS 1J12...
Page 233: ...CHAPTER FIRE PROTECTION 1J17...
Page 238: ...CHAPTER FLIGHT CONTROLS 1J24...
Page 304: ...2A18 CHAPTER FUEL...
Page 325: ...2B17 CHAPTER HYDRAULIC POWER...
Page 357: ...2D1 CHAPTER ICE AND RAIN PROTECTION...
Page 414: ...CHAPTER LANDING GEAR 2F13...
Page 479: ...2I6 CHAPTER LIGHTS...
Page 488: ...2I16 CHAPTER NAVIGATION AND PITOT STATIC...
Page 503: ...2J7 CHAPTER OXYGEN...
Page 524: ...2K6 CHAPTER VACUUM...
Page 535: ...2K19 CHAPTER ELECTRICAL ELECTRONIC PANELS AND MULTIPURPOSE PARTS...
Page 546: ...INTENTIONALLY LEFT BLANK PA 44 180 180T AIRPLANE MAINTENANCE MANUAL 2L6 PIPER AIRCRAFT...
Page 547: ...2L7 CHAPTER STRUCTURES...
Page 582: ...CHAPTER DOORS 3A18...
Page 593: ...CHAPTER STABILIZERS 3B8...
Page 604: ...CHAPTER WINDOWS 3B22...
Page 611: ...CHAPTER WINGS 3C10...
Page 624: ...CHAPTER PROPELLER 3D1...
Page 643: ...CHAPTER POWER PLANT 3D21...
Page 667: ...CHAPTER ENGINE FUEL SYSTEM 3F1...
Page 681: ...CHAPTER IGNITION 3F16...
Page 712: ...CHAPTER ENGINE INDICATING 3H1...
Page 730: ...CHAPTER EXHAUST 3H19...
Page 734: ...CHAPTER OIL 3I1...
Page 743: ...CHAPTER STARTING 3I11...
Page 755: ...CHAPTER TURBINES 3J1...