Piper Arrow IV Turbo Maintenance Manual page 366

MAIN GEAR.
DISASSEMBLY OF MAIN GEAR OLEO. (Refer to Figure 32-1.)
The main gear oleo assembly may be removed and disassembled from the gear oleo housing with the gear
removed from or installed on the airplane.
1. Place the airplane on jacks. (Refer to Jacking, Chapter 7.)
2. Place a drip pan under the main gear to catch spillage.
3. Remove the air and fluid from the oleo. To do this, depress the air valve core pin until strut pressure
has diminished, remove the filler plug and with a small hose siphon as much hydraulic fluid from the strut as
possible.
4. Disconnect the brake line at the joint located in the wheel well.
5. To remove piston tube assembly from oleo housing, remove the upper and lower torque link
connecting bolt assembly and separate the links. Note number and thickness of spacer washer(s) between the
two links.
6. Compress the piston tube, reach up along the tube and release the snap ring from the annular slot at the
bottom of the oleo housing.
7. Pull the piston tube with component parts from the cylinder housing.
8. The piston tube components may be removed by reaching in the tube and pushing out the upper
bearing retainer pins. Slide off the upper bearing, lower bearing with O-rings, wiper, washer and snap ring.
9. To remove the orifice tube from the oleo housing, remove the lock nut and washer from the top of the
housing. Draw the tube with O-ring and retainer from the housing.
10. The orifice plate is removed from the bottom of the orifice tube by releasing the snap ring that holds
the plate in position.
11. To remove the piston tube plug with O-ring located in the lower end of the tube, remove the bolt
assembly and insert a rod up through the hose in the body of the fork, pushing the plug out through the top of
the tube.
CLEANING, INSPECTION AND REPAIR OF MAIN GEAR OLEO.
1. Clean all parts with a suitable dry type cleaning solvent.
2. Inspect the landing gear oleo assembly component for the following:
A. Bearings and bushings for excess wear, corrosion, scratches and overall damage.
B. Retaining pins for wear and damage.
C. Lock rings for cracks, burrs, etc.
D. Cylinder and orifice tube for corrosion, scratches, nicks and excess wear.
E. Orifice plate for hole restriction.
F. Fork tube for corrosion, scratches, nicks, dents and misalignment.
G. Air valve general condition.
3. Repair of the oleo is limited to smoothing out minor scratches, nicks and dents and replacement of
parts.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
2D15
32-10-02
Page 32-08
December 1, 1978