Removal Of Main Landing Gear - Piper Cheyenne IIIA Airplane Maintenance Manual

PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
A. Main Gear and Doors (continued)
2. Removal of Main Landing Gear (refer to 32-10-00 Figure 401)
(a) Place airplane on jacks. (refer to Jacking, 7-10-00.)
(b) Remove two access plates forward and two access plates aft of the outboard wheel door.
(c) With the hand pump, retract main gear slightly to relieve gear from its down locked position and
to lower inboard gear door out of the way.
(d) Disconnect brake line.
(e) To remove side brace link assembly, use the following procedure:
(1.) Disconnect actuating cylinder and down lock cable from upper side brace link arm by
removing the clevis bolt. Disconnect other end of the down lock rod or cable at the down
lock hook.
(2.) Remove down lock hook and spring by removing pivot bolt.
(3.) Remove down lock switch by removing the four screws attaching the bracket between the
forward and aft side brace links. Remove clamps securing the electrical wiring to the side
brace link.
(4.) Disconnect lower side brace link from gear oleo housing; let link assembly swing down.
(5.) Remove bolt connecting the upper and lower side brace links.
(6.) Disconnect aft link from its attachment plate.
(7.) To remove forward link, remove nut with washers holding the link on its pivot shaft. Slide
link from the pivot shaft.
(8.) The pivot shaft is removed by reaching through pivot shaft bracket access hole and
removing the bolt securing the shaft to the shaft fitting. Slide the tube through the
attachment bracket. The shaft fitting it attached with cap bolts, washers, and anchor nuts.
NOTE: Before removing the pivot shaft attachment fitting from the spar, note where and
how many spacers/shims were used during installation. Use same number of
shims at reinstallation and note bolt sizes at the locations removed.
(f) Disconnect outboard gear door retraction rods at the gear housing. With the lower side brace
link disconnected from the housing, the gear is removed by removing attachment bolt
assemblies at the attachment plates on each side of the gear housing. Note the number and
location of spacer washers between the gear housing and attachment plates. Main landing
gear bolt retainers must be removed.
(g) The up lock hook and spring is removed by disconnecting up lock cable and blowdown actuator
rod from hook and the hook pivot bolt.
(h) The up lock cable is removed by disconnecting it at the lock crank.
(i) The landing gear and upper drag link attachment plates are removed by reaching through the
access holes in the nuts securing the plates. While holding the nuts with a wrench, remove
attachment bolts.
EFFECTIVITY:
040-999
Jan
10/90
32-10-00