Cleaning, Inspection And Repair Of Nose Landing Gear; Installation Of Nose Landing Gear - Piper Navajo PA-31 Service Manual

PIPER NAVAJO SERVICE MANUAL
7-9. CLEANING, INSPECTION AND REPAIR OF NOSE LANDING GEAR.
a.
Clean all parts with a suitable cleaning solvent.
b. Inspect the landing gear assembly components for the following unfavorable conditions:
1. Bolts, bearings, bushings and ball joints for excessive wear, corrosion and damage.
2.
Gear housing, drag links, idler link, rods and attachment
plates for cracks, bends or
misalignment.
3.
Downlock spring for wear, corrosion, and not returning to complete compression.
4. Uplock hook for wear and oversized bearing surfaces.
5.
Uplock roller for freedom of movement and minimum wobble.
6. Uplock rod or cable and end bearings for corrosion and freedom of movement. Also. inspect
the sliding surfaces of the uplock rod.
7. General condition of limit switches.
8. Wiring for fraying, poor connections or conditions that may lead to failures.
c. Attach the upper and lower drag links and check that when stop surfaces touch, linkage is .063 to
.156 inch through center. Should this distance exceed the required through center travel and bolt
and
bushings are tight, replace one or all drag links.
d. The shimmy dampener requires no service other than routine inspection. In case of damage or
malfunction, the dampener should be replaced rather than repaired.
e.
Repair to the landing gear is limited to reconditioning of parts such as replacing bearings and
bushings, smoothing out minor nicks and scratches, repainting of areas where paint has chipped or
peeled
and replacement of parts. Service tolerances for wear of the various components may be found in Figure
7-1 9a.
7-10. INSTALLATION OF NOSE LANDING GEAR. (Refer to Figure 7-2.)
NOTE
When assembling any units of the landing gear, lubricate bearings
and friction surfaces with proper lubricant as described in Section
II.
a.
Position the right and left upper drag link plates (38 right) and bolt in place.
b. Position the right and left gear housing attachment plates (43 right) and rivet in place.
c. Install the support tube (17) and secure. Connect the up limit switch (15) and secure electrical
wiring to the tube.
NOTE
The uplock hook (10). uplock rod or cable (18). idler link (24) and
retraction rod (36) may be assembled on the support tube as a unit
and then installed on the airplane, or each component installed
individually after the support tube has been installed.
Revised: 10/12/83
LANDING GEAR AND BRAKE SYSTEM
2E14