Piper Cherokee LANCE, Service Manual

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PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
VIA - LANDING GEAR AND BRAKE SYSTEM 03/27/08
(PA-32R-300)
2C10
k. To remove the orifice tube (30), remove the large locknut (16) and lock washer (19) from the top of
the cylinder. Pull the tube from the cylinder.
1. The orifice plate (31) is removed from the bottom of the orifice tube by releasing the snap ring (32)
that holds the plate in position.
m. To remove the piston tube plug (40) with “O” ring (41) located in the lower end of the tube, remove
the bolt assembly and insert a rod up through the hole in the body of the fork (42). Push the plug
out through the top of the tube.
6A-7. 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. Upper and lower cylinder bushings loose or turning in cylinder.
6. Orifice plate for hole restriction.
7. Fork tube for corrosion, scratches, nicks, dents and misalignment.
8. Air valve general condition.
c. Repair of the oleo is limited to smoothing out minor scratches, nicks and dents and replacement of
parts.
6A-8. ASSEMBLY OF NOSE GEAR OLEO. (Refer to Figure 6A-l.)
a. Ascertain that parts are cleaned and inspected.
b. To install the piston tube plug (40), first lubricate the tube plug and “O” ring (41) with hydraulic
fluid (MIL-PRF-5606) and install the “O” ring on the plug. Lubricate the inside wall of the tube
(39); insert the plug into the top of the tube and push it to the fork end. Align the bolt holes of the
fork, tube and plug, and install bolt assembly.
c. If desired, cement a cork in the hole in the bottom of the fork body to prevent dirt from entering
between the fork and tube.
d. To assemble the components of the orifice tube (30), insert the orifice plate (31) into the bottom of
the tube, with the countersunk side of the orifice hole exposed. Secure the plate with the snap ring
(32), lubricate and install the “O” ring (28) on the upper end of the tube.
e. Insert the orifice tube (30) up through the bottom of the cylinder (23). With the tube exposed
through the top of the cylinder, install the lock washer ( 19) and insert roll pin (18) through the lock
washer into the piston. Install the tube locknut (16) finger tight at this time.
f. The fork (42) and tube (39) assembly may be assembled by installing the tube components on the
tube. In order, slide onto the tube, the snap ring (38), washer (37), lower bearing (34) with outer and
inner “O” rings (33 and 35) and upper bearing (29). Align the lock pin holes in the upper bearing
with the pin holes in the piston tube (39) and install pins (27).