Main Landing Gear Removal; Main Landing Gear Cleaning, Inspection And Repair - Piper PA-24 Comanche Service Manual

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PIPER COMANCHE SERVICE MANt: AL
6-31. Removal
or
Main Landing Gear. (Refer to Figure 6-9.)
a. Place the airplane on jacks. (Refer to Jacking. Section 11.)
b. Disconnect the retraction transmission by pulling up on the release lever.
c. Retract the landing gear until it hangs in the neutral position. by using the emergency extension
lever.
d. The side brace link assembly may be removed by the following procedure:
I. Disconnect
the assist spring. (This may also be accomplished while disconnecting the
push-pull cable as described in the next step.)
2. Disconnect the push-pull cable from the upper drag link by removing attaching nut. washer
and bolt with swivel assembly
(20).
1
Disconnect the gear down limit switch (25) by removing switch attaching nut.
4. Remme the side brace links by removing the pivot bolts (23) at each end.
S.
Remove the side brace support bracket
(22)
from the front spar by removing attaching bolts.
e. Remove the main gear strut housing with components using the following procedure:
I. Disconnect the gear door retraction rod (29) from the strut housing.
2.
Disconnect the brake line (33) and cap it to prevent dripping and contamination.
1 Remove
the access panel aft of the rear spar by removing attaching screws.
4. Swing the landing gear enough to allow insertion of a bungee tool, P. S 752998. between the
inboard (4) and outboard (6) bungee pulleys.
5. With tension relieved from the bungee, remove the inboard pulley attaching bolt (3) and
remove
the
bungee
assembly by unscrewing the outboard pulley bracket
(7)
from its fitting.
6. Remove the bolt (9) holding the bungee arm ( 10) to the rear strut support fitting ( II). Cut and
remove safet ...· wire
(13).
Slide studs
(14)
from rear strut arm.
7.' Slide the bungee arm tube out of the rear support fitting freeing the rear strut arm. Note the
number and thickness of shims (12) between the rear support fitting and rear strut arm.
8. Remove the gear assembly from the wheel well by removing the attaching bolts holding the"
front support fitting (18) to the front spar web.
9. Remove the rear support fitting by gaining access to the attaching nuts through the access
hole behind the rear spar and remove nuts. washers and bolts.
6-32.
Cleaning. Inspection And Repair Of Main landini Gear.
a. Clean all parts with a suitable cleaning solvent.
b. Inspect the gear components for the following unfavorable conditions.
I.
Bolts. bearings and bushings for excess wear. corrosion and damage.
2. Gear housing. side brace links. torque links. strut support fittings and bungee arms for cracks.
bends or misalignment.
3. Assist spring for corrosion. wear and serviceability. (Refer to Table VI-III.)
4. Bungee cord for fraying of protective cover deterioration and expanded rubber life. (Refer to
Table VI-Ill.)
5. Wiring for fraying poor connections or conditions which may lead to failure.
6. Check general condition of limit switch.
7. Check side brace link through center travel by attaching the upper and lower links. setting
them on a surface table. and ascertaining that when the stop surfaces of the two links touch. linkage is not more
than O. 125 of an inch +.06 -.00 through center. Should the distance exceed the required through center travel
and bolt and bushings are tight. replace one or both links. (Refer to Figure 6-8a.)
REVISED: 4/10/81
1119
LANDING GEA'R AND BRAKE SYSTEM