Troubleshooting; Landing Gear System; Nose Landing Gear System; Disassembly Of Nose Gear Oleo - Piper Lance II Service Manual

LANCE II SERVICE MANUAL
7-3. TROUBLESHOOTING.
Mechanical and electrical switch troubles peculiar to the
landing gear system are listed in Table VII-IV at the back of this section. When
troubleshooting. first eliminate hydraulic malfunctions as listed in Section VI. Then proceed
to switch malfunctions and last to the mechanical operation of the gear itself, both of which
are listed in this section. Always place the airplane on jacks before attempting any
troubleshooting of the gear. To operate the gear, the emergency gear lever must be
maintained in the up override position.
7-4. LANDING GEAR SYSTEM.
7-5. NOSE LANDING GEAR SYSTEM.
7-6. DISASSEMBLY OF NOSE GEAR OLEO. (Refer to Figure 7-1.) 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 II.)
b. Place a drip pan under the nose gear to catch spillage.
c. Remove air and fluid from the oleo strut. Depress the air valve core pin until strut
chamber pressure has diminished; remove the filler plug and with a small hose siphon as
much hydraulic fluid from the strut as possible.
d. To remove the complete cylinder and fork assembly from the oleo housing (21), cut
safety wire (2) at the top of the unit and remove cap bolts (1) that attach steering arm (11)
and aligner guide bracket (12) to the top of the oleo cylinder (23).
e. Disconnect the shimmy dampener by removing each cotter pin, nut, washer and bolt
that connects the dampener to the oleo cylinder (23) and housing.
f.
Release and remove the snap ring (17) and washer(s) (43), if installed, at the top of
the housing (21), and pull the complete cylinder and fork assembly from the bottom of the
housing.
g. To remove the piston tube (39) and fork (42) from the cylinder (23), first separate
the upper and lower torque links (24 and 26) by removing the link connecting bolt assembly
(25) and then separate the two links. Note spacer washer between the two links.
h. Compress the piston tube (39); reach up along the tube and release the snap ring
(38) from the annular slot at the bottom of the oleo housing.
i.
Pull the piston tube (39) with component parts from the cylinder.
j.
The piston tube components may be removed by reaching in the tube and pushing
out the upper bearing retainer pins (27). Slide from the tube, the upper bearing (29), lower
bearing (34) with outer and inner "O" rings (33 and 35), wiper strip (36), washer (37) and
snap ring (38).
Issued: 1/3/78
LANDING GEAR AND BRAKE SYSTEM
1J9