Cleaning, Inspection And Repair Of Nose Gear Oleo; Assembly Of Nose Gear Oleo - Piper Navajo PA-31 Service Manual

PIPER NAVAJO SERVICE MANUAL
k. The piston tube components may be removed by reaching in the tube and pushing out the upper
bearing (2) retaining pins (1). Slide off the tube, the upper bearing (2), spacer (3), lower bearing (5) with outer
and inner O-rings (4 and 6), wiper strip (7), washer (8) and retainer ring (9).
l.
To remove the orifice (15), remove the large nut and washer (38) from the orifice tube and lock
plate (45) from the top of the cylinder. Pull the tube from the cylinder.
m.
The orifice plate (16) is removed from the bottom of the orifice tube by releasing the retainer ring
(17) that holds the plate in position.
NOTE
Do not remove piston tube plug (48) from piston tube (26), or piston
tube (26) from fork (19).
7-6. CLEANING, INSPECTION AND REPAIR OF NOSE GEAR OLEO.
a.
Clean all parts with a suitable dry type cleaning solvent.
b. Inspect the landing gear oleo assembly component for the following:
1. Bearings and bushings for excess wear, corrosion, scratches and overall damage.
2. Retaining pins for wear and damage.
3. Lock rings for cracks, burrs, etc.
4.
Cylinder and orifice tube for corrosion, scratches, nicks and excess wear.
5. Orifice plate for hole restriction.
6. Fork tube for corrosion, scratches, nicks, dents and misalignment.
7. Air valve general condition.
c. Repair of the oleo is limited to smoothing out minor scratches, nicks and dents and replacement
of parts.
d. Individual replacement of wiper strips may be achieved per Paragraph 7-29a.
7-7. ASSEMBLY OF NOSE GEAR OLEO. (Refer to Figure 7-1 and 7-la.)
a. Ascertain that parts are clean and inspected.
b. If desired, cement a cork in the hole in the bottom of the fork body to prevent dirt from entering
the fork tube.
c. To assemble the orifice tube (15), insert the orifice plate (16) into the bottom of the tube, with the
countersunk side of the orifice hole exposed. Secure the plate with the retainer ring (17). Lubricate and
install the O-ring (14) on the upper end of the tube.
Revised: 10/12/83
LANDING GEAR AND BRAKE SYSTEM
2E11
LANDING GEAR AND BRAKE SYSTEM