Adjustment Of Main Landing Gear Doors - Piper Navajo PA-31 Service Manual

PIPER NAVAJO SERVICE MANUAL
7-29. ADJUSTMENT OF MAIN LANDING GEAR DOORS.
a. Ascertain that the main landing gear has been properly adjusted.
b. Adjust outboard door rods to their maximum length and bolt to the bosses on the gear housing.
Retract gear and observe the amount of gap. Shorten rods by several turns of the rod ends and retract gear
again. Repeat until door closes properly.
CAUTION
Damage to the door may result if rods are too short.
c.
Adjust inboard door using same procedure as used for outboard door.
NOTE
Should it be necessary to fit new doors or refit the present doors,
maintain a gap of approximately .062 of an inch, except at the
hinge side, between the door and the skin surface of the wing. A
gap of approximately .093 of an inch should be maintained at the
hinge side of the door.
7-29a. REPLACEMENT OF WIPER STRIP ON LANDING GEAR STRUTS.
a. Place the airplane on jacks. (Refer to Jacking, Section II.)
b.
Jack the airplane only high enough to take weight off the gear.
c. Release the airpressure from the strut by depressing the valve core pin until the pressure has
diminished.
d. Using snap ring pliers, disengage the snap ring from the annular slot in the oleo housing and allow
it to lay at the lower end of the piston tube along with the wiper strip retainer washer.
e. Remove the old wiper strip from the housing, and clean and inspect the housing to determine
that no pieces remain in it.
f. Wipe the piston tube and check it for any abrasions which may damage the new wiper. Polish the
tube to remove any abrasions found.
g. A new wiper strip should be cut with a 30 degree bevel, a little longer than needed, to circle the
piston tube.
h. Insert the new wiper strip up into the oleo housing with the tapered edge down. Slide the retainer
washer and snap ring up the piston tube and insert them into the oleo housing. Using snap ring pliers to
compress the snap ring, install it into the annular slot in the oleo housing.
i. Inflate the oleo strut in accordance with instructions given in Oleo Struts, Section II, and remove
the airplane from the jack.
Reissued: 10/12/79
LANDING GEAR AND BRAKE SYSTEM
2F14