PIPER
COMANCHE
SERVICE
MANUAL
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).
e.
3.
Disconnect the gear down limit switch (25) by removing switch attaching nut.
4.
Remove
the
side brace links by removing the pivot bolts (23)
at
each end.
5.
Remove the side brace
support
bracket (22) from the
front
spar
by removing attaching bolts.
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.
3.
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
/N
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 safety 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
cC
hole behind the rear
spar
and remove nuts. washers and bolts.
6-32.
Cleaning. Inspection And Repair
Of
Main Landing 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
0.125
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
GEAR
AND
BRAKE SYSTEM
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