Cleaning, Inspection And Repair Of Nose Landing Gear - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
d. To remove the drag link assembly. the following procedure may be used:
1. Disconnect gear retraction rod (36) from the upper right drag link (39).
2. Disconnect the lower drag link (41) from the gear oleo housing (44).
3. The upper and lower link assemblies may be removed as one unit by removing the upper drag
links (37 and 39) attachment bolts at their attachment plates.
e. With the lower drag link (41) disconnected from the gear housing (44). the gear may be removed
by removing the attachment bolt assemblies at the attachment plates (38 right) on each side of the gear
housing. Note if any. the number and location of spacer washers between the gear housing and attachment
plates.
f. The idler link (24) may be removed after the gear operating rod has been disconnected, by the
following procedure:
I. Remove the downlock spring (22) and the eye bolt (51) which is attached to the idler link.
2. Disconnect the gear actuating cylinder (25) rod from the link.
3.
Remove the link pivot bolt (19) by sliding the bolt out of the link, allowing the head to enter
the hole in the side of the limit switch bracket. With the head through the bracket hole, the threaded end of the
bolt can continue out of the link.
4.
Remove the idler link (24).
g. The uplock rod or cable (18) may be removed by removing the nut (20) from the actuating cylinder
support bolt and sliding the rod or cable off the bolt. Retain the bolt in place to support the cylinder.
h. The uplock hook (10) may be removed after the removal of the uplock rod or cable (18) and the
hook pivot bolt. Remove the hook with the uplock spring (11).
NOTE
The idler link (24). uplock rod or cable (18) and uplock hook may
also be removed with support tube (17) as one unit.
i.
To remove the support tube (17) first remove the up limit switch (15) and wire support clamps.
Hold the support nuts within the nose section. wrench the support bolts and remove tube.
i.
The gear housing (44) and attachment plates (43 right) may be removed by grinding the rivet heads
flush with the plate and removing the rivets.
k. The upper drag links (37 and 39) and attachment plates (38 right) may be removed by holding the
attachment nuts within the nose section and wrenching the support bolts.
7-10. 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 mis-
alignment and upper bearing block retainer pins for damage.
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 mal-
function. the dampener should be replaced rather than repaired.
Revised: 3/5/84
2D22
LANDING GEAR AND BRAKE SYSTEM