Installation Of Nose Landing Gear - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
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.
7-11. INSTALLATION OF NOSE LANDING GEAR. (Refer to Figure 7-3.)
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.
d.
The uplock hook (10) with uplock spring (II) may be installed as follows:
I.
Place the "U" end of the uplock spring ( I) over the back of the hook with the loops toward
the back.
2.
Spread the spring and snap the loops over the bushing that extends through the hook.
3. Hook the ears of the spring over the aft side of the hook bracket and push the hook forward
until the bolt holes in the bracket align with the holes in the hook.
4. Bolt the hook in position and ascertain that it rotates freely and with no side play and safety.
e.
Install the uplock rod or cable (18) by attaching and securing the proper end to the uplock hook
and the other end on the gear actuating cylinder support bolt.
f. The idler link (24) may be installed by the following procedure:
I. Align the bolt hole in the link (24) with the lug holes of the support tube (17) and with the
down limit switch contact boss to the right.
2.
Insert the head of the pivot bolt into the hole in the side of the up limit switch bracket far
enough to allow the threaded end of the bolt to be inserted into the tube lug and link. Tighten the nut on
the bolt allowing the link to turn free with no side play.
3. Attach retraction rod (36) and actuating cylinder rod end (33) to the link (24). Do not connect
retraction rod (36) to link (39) until gear adjustment has been completed.
4.
The downlock spring (22) may be attached after gear check and adjustment has been
completed.
g.
To install the gear housing assembly. position the gear so that the attachment points on the housing
align with the attachment plates. If needed. install spacer washers between attachments to allow a minimum
amount of side play. Tighten the pivot bolt nuts to a snug fit. allowing the gear to swing free. and safety.
h. The drag links may be installed as follows:
1. Align upper (37) and (39) and lower (41) drag link bolt holes. Install bolt. uplock bearing (54)
and secure.
2. Ascertain that the linkage through center travel is within tolerance.
Revised: 10/5/83
2D23
LANDING GEAR AND BRAKE SYSTEM
2D23