Landing Gear Selector Mechanism Installation; Landing Gear Selector Mechanism Inspection; Landing Gear Selector Mechanism Adjustment - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
6-99. INSTALLATION OF GEAR SELECTOR HANDLE MECHANISM. (Refer to Figure 6-19.)
a.
Installation of Flexible Cable Assembly.
1.
Insert the end of the cable assembly with locknuts through the hole in the bulkhead at
station 57.0.
2.
Insert the cable assembly through bracket assembly (11). An equal number of threads
should appear on each side of the plate in the bracket assembly. Tighten and safety wire the two locknuts.
3.
Install locknut and terminal on the end of the cable assembly. Position the control arm (10)
in the terminal and insert pin and safety.
4.
Position the free end of the cable assembly into the slot in bracket assembly (8) and secure
in position with clamp (19).
5.
Assemble firewall plates (21) and grommets (22).
b.
Installation of Selector Handle Assembly.
1.
Install the selector assembly on the instrument panel.
2.
Position the terminal (18) on lever assembly (6) and secure in position with pin, washer and
cotter pin (12).
3.
Carefully thread the wires from the panel assembly (15) through the hole provided in the
plate assembly (5). Position the panel assembly on the plate assembly. Insert the base assemblies of the
lights through the plate and panel assemblies and install nylomatic washer and locknut, and light cap.
Connect wires to their appropriate terminals.
4.
Insert the sleeve (2) on the lever and install the control knob (1) and stop pin (3).
c. Installation of Solenoid Assembly.
1.
Position the solenoid (13) on mounting block (14) and secure in position with two locknuts.
2.
Connect the solenoid wires to their appropriate terminals.
6-100. INSPECTION OF LANDING GEAR SELECTOR HANDLE MECHANISM.
a.
Ascertain that the handle does not contact the ends of the slot in the instrument panel when
moved to the extremes of its travel.
b.
Inspect and be certain there is adequate clearance between the selector gear mechanism and
wiring harness which runs laterally across the aircraft.
c.
Determine that locknuts are securely tightened and that all grommets have been properly
installed.
d.
Check security of control cable connections to the actuator arms on both the power pack and
selector handle.
e.
Inspect Anti-Retraction solenoid for security of attachment and ascertain that solenoid plunger
operates freely and engages properly into selector lever stop assembly.
6-101. ADJUSTMENT OF GEAR SELECTOR MECHANISM. (Refer to Figure 6-19.)
a.
With the selector handle midway between the up and down position, the control arm (10) on the
power pack (9) should be in the neutral position. If not, loosen locknuts and adjust terminals to obtain this
condition.
b.
Depress the button on the solenoid to allow the handle to travel freely between the two neutral
positions.
c.
To check the handle release mechanism, disconnect the cable assembly from the control arm at
the power pack. Connect a spring scale to the arm and pull both fore and aft, perpendicular to the centerline
of the control arm, to determine that it will leave the detent at a force of 9 + 1-2 pounds. If it does not release
at this force, adjust the mechanism as described in Paragraph 6-46 or 6-87.
d.
Connect cable assembly and recheck to determine that the handle will leave the dentent at 3 1/ 2
to 6 pounds.
Revised: 2/8/82
HYDRAULIC SYSTEM
2C11