Piper Navajo PA-31 Service Manual page 408

PIPER NAVAJO SERVICE MANUAL
c.
Repair of 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
7-19b.
7-23. INSTALLATION OF MAIN LANDING GEAR. (Refer to Figure 7-7.)
NOTE
When assembling any units, lubricate bearings and friction surfaces
with proper lubricant as described in Section II.
a. Position the attachment plates of the landing gear housing and upper drag links and bolt in place.
b. The uplock hook ( 11) may be installed by the following procedure:
1. Place the "U" end of the uplock spring (9) over the back of the hook with the loops also
toward the back.
2. Spread the spring and fit the loops over the bushing that extends through the hook.
3. Slide the hook inboard through the bracket until the bracket hole aligns with the bolt hole
in the hook.
4. Install the pivot bolt and tighten so the hook will rotate freely, yet without side play.
c. Attach the uplock cable or rod (14) with the proper end attached to the hook ( I ) and the other end
to the crank fitting (21).
d. To install the main gear housing assembly, position the gear so that the attachment points on the
housing align with the attachment plates (37 forward). If needed, install spacer washers between
attachments to allow a minimum amount of end play. Tighten nut on each pivot bolt to a snug fit, allowing
the gear to swing free and safety.
e.
The upper and lower side brace link assembly may be installed by the following procedure:
1. Install the forward upper link pivot tube attachment fitting (29) to the spar and secure with
cap bolts.
2. Slide the pivot shaft (28) through the attachment plate (27) and into the attachment fitting
(29). Secure the pivot shaft to the attachment fitting.
3. Ascertain that the forward upper arm (26) is installed on the link (31). Install the link (31)
on the pivot shaft and secure with washers and nut.
4. The aft upper drag link (36) may be installed by sliding the link on the aft attachment plate
pivot bolt. Tighten the nut to allow the link to swing free with no side play and safety.
Revised: 10/12/83
LANDING GEAR AND BRAKE SYSTEM
2F6