Piper COMANCHE PA-24-180 Service Manual page 191

PIPER COMANCHE SERVICE MANUAL
6-5 Nose Landing Gear.
6-6 Disassemblb Of Nose Gear Oleo. (PA-24-180 and PA-24-250. Serial Nos 24-1 to 24-214 inclusixe
(Refer to Figure 6-1 ) The nose gear oleo assembly may be removed and disassembled from the gear oleo
housing with the gear removed from or installed on the airplane
a Place the airplane on jacks (Refer to Jacking. Section 11 )
b Place a drip pan under the gear to catch spillage
c
Remove the air and fluid from the oleo To do this. depress the air valve core pin (4) until strut
pressure has diminished. remove the filler plug (5). and with a small hose siphon as much hydraulic fluid
from the strut as possible
d To remove the piston tube assembly (12) from the oleo housing (3). remove the upper (13) and
lower (15) torque link connecting bolt assembly (14) and separate the links Note the upper and lower torquc
links and the number of spacer washer between the two links
e Compress the piston tube (12). reach up along the tube and release the snap ring (31) from the
annular slot at the bottom of the oleo housing
f Pull the piston tube with component parts from the cylinder housing
g The piston tube components may be removed by reaching in the tube and pushing out the upper
bearing retainer pins (24) Slide off the upper bearing (25). spacer(26). lower bearing(27)with inner and outer
"0" rings (34 and 28). wiper (29). washer (30) and snap ring (31).
h To remove the orifice tube (21) from the oleo housing. remove the locknut (I) and washer (2) from
the top of the housing Draw the tube with "0" ring (20) and back-up washer (19) from the housing
i The orifice plate (22) is removed from the bottom of the orifice tube by releasing the snap ring
(23) that holds the plate in position
To remove the piston tube plug (32) with "O" ring (33) 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 (18). pushing the plug out
through the top of the tube
6-7 Cleaning. Inspection And Repair Of Nose Gear Oleo.
a Clean all parts with a suitable quick drying type cleaning solvent
b Inspect the landing gear oleo assembly component for the following
I
Bearing 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
h
Fork tube for corrosion. scratches. nicks. dents and misalignment
7 Air valve general condition
X
Worn or broken turning limit stops
NOTE
If the nose wheel turning limit stops are found broken or have been
broken in the past. the entire sstem including the following items
should he checked to insure proper rudder action and condition.
(a) Check rudder hinges. pulleys and pulley brackets
(b) Check rudder rigging and cable tension per instructions
in
Section V of this manual
REVISED: 4/10/81H23
LANDING GEAR AND BRAKE
SYSTEM
1H23