Landing Gear Selector Handle Mechanism; Removal Of Gear Selector Handle Mechanism - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
d.
Operate the test hand pump to raise the pressure in the reservoir until the pressure gauge
indicates 50 PSI maximum.
e.
Check for leaks, there should be no external leakage.
f.
Crack the vent fitting to release the pressure, remove the test equipment, drain the reservoir and
cap the fittings.
g.
The hydraulic Power Pack is now ready to be installed in the airplane.
6-95. INSTALLATION OF POWER PACK. (See Paragraph 6-54.)
6-96. LANDING GEAR SELECTOR HANDLE MECHANISM.
6-97. OPERATION OF GEAR SELECTOR HANDLE MECHANISM. The operation of the landing gear
selector handle must give the feel of having made a positive engagement with a detent. With the selector
handle in the up or down position and in a detent, a force of 3-1/2 to 6 lbs. applied perpendicular to the
centerline of the handle at the centerline of the knob will be required to move the handle from the detent
and return it to the neutral position. To check the operation of the gear selector handle mechanism, place
the airplane on jacks (Refer to Jacking, Section II) and operate the landing gear selector handle through its
entire travel, both up and down.
6-98. REMOVAL OF GEAR SELECTOR HANDLE MECHANISM. (Refer to Figure 6-19.)
Removal of the gear selector mechanism can be divided into three individual assemblies. The Solenoid
Assembly; The Selector Handle Assembly; and The Flexible Cable Assembly.
a.
Removal of Solenoid Assembly.
1.
Disconnect the two wires leading from the solenoid (13).
2.
Remove two locknuts securing the solenoid to the mounting block (14) and remove the
solenoid.
b.
Removal of Selector Handle Assembly.
1.
Remove stop pin (3) and pull the control knob (1) and sleeve (2) from the lever assembly
(6).
2.
Disconnect the wires leading from the panel assembly (15). Remove four light assemblies
(16) securing the panel assembly to the plate assembly (5).
3.
Remove pin, washer and cotter pin (12) securing the terminal (18) to the lever assembly.
4.
Remove the selector assembly from the instrument panel.
c.
Removal of Flexible Cable Assembly.
1.
Remove screws and clamp (19) securing cable assembly (7) to bracket assembly (8).
2.
Push cable assembly through grommet adjacent to the bracket assembly.
3.
Remove pin (17) securing the terminal to the control arm (10) of the power pack (9).
Remove the lock nut and terminal from the end of the cable assembly.
4.
Cut safety wire and remove locknut (20) nearest the end of the cable assembly. Carefully
pull the cable assembly through the hole in bracket assembly (11)
5.
Disassemble the firewall plates (21) and grommets (22) and pull cable assembly through the
hole in the bulkhead at station 57.0.
Reissued: 9/23/80
HYDRAULIC SYSTEM
2C9