Piper Cherokee Six - Page 335

PIPER
CHEROKEE
SIX SERVICE
MANUAL
8. The aft
support
fitting
(1) may
be removed
by
holding
the nuts
in position,
reaching through
the
access opening,
and removing
the
fitting attachment
bolts.
9. The forward
support fitting (16)
may be removed
from the arm
of the housing
by removing
the bolt and
washer from
the base side
of the fitting.
Slide the
fitting from
the
arm.
Remove
washer
(52) from
the arm.
d. Either
bearing (53
or 54) installed
in the
support fittings
may
be removed
by
removing
the snap
rings (2) that
hold the bearing
in the housing.
Push
the bearing
from the
housing.
6A-23.
CLEANING,
INSPECTION
AND
REPAIR
OF MAIN
LANDING
GEAR.
a.
Clean all parts
with a suitable
dry type
cleaning
solvent.
b. Inspect
the gear
components
for the
following
unfavorable
conditions:
1. Bolts, bearing
and bushings
for excess
wear, corrosion
and damage.
2.
Gear housing,
side brace
links, torque
links and
attachment
plates
for cracks,
bends or
misalignment.
3. Downlock
hook
for excessive
wear of the
bearing
surfaces.
c. Inspect
the gear downlock
spring
for the
following:
1.
Excessive wear
or corrosion,
especially
around
the-hook portion
of the
spring. A
spring
should be
rejected if
wear or corrosion
exceeds
one-quarter
the diameter
of the
spring.
Clean away
all corrosion
and
repaint.
2. Check the spring
for load tensions
below minimum
allowable
tolerance. The
minimum tension
of the spring
is 48 pounds
pull at
7.9 inches. Measurement
is taken from
the
inner
side of each
hook.
d.
Check
the general
condition
of each
limit
switch
and its
actuator,
and
wiring
for
fraying,
poor
connections
or conditions
that
may
lead to failures.
e. 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 less than
.062 nor more
than .125
of an inch
through center.
Should
the
distance
exceed the
required
through
center
travel and
bolt and
bushings
are tight,
replace one
or both
links.
f.
With side
brace links
assembled and
checked,
ascertain that
when stop
surfaces of
the
two links
contact, the
clearance
between each
downlock
hook and the
flat of the
downlock
pin
is not less than
0.010 of
an inch. Should
clearance
be less than
that required,
the
hook
only may
be filed
not to
exceed a
gap of more
than
0.025 of
an inch.
The
maximum
allowable clearance
between
each hook
and the
downlock pin
that are service
worn
is 0.055 of an inch.
Should clearance
be more than 0.055
of an inch, replace
the pin,
check
clearance and then
if still beyond tolerance,
replace hooks.
The gap between
each
hook should
be
equal.
g.
Repair of the
landing gear
is limited
to reconditioning
of
parts such as
replacing
components,
bearings
and bushings,
smoothing
out minor
nicks and
scratches and
repainting
areas
where paint has
chipped or peeled.
h. Refer
to
Table
VIA-II
for service
tolerance
information.
LANDING
GEAR AND
BRAKE SYSTEM
Revised: 12/15/80
2D11