g. Remove
anchor bolt by the
following procedure:
1. Position cylinder assembly on a holding fixture. (Refer to Figure 6-9a.)
2. Use a suitable
arbor press to remove the anchor
bolt from the cylinder body.
h. Install anchor bolt by the following procedure:
1. Support anchor bolt in a holding fixture. (Refer to Figure 6-9b, Step A.)
2.
Align cylinder body over anchor
bolt. (Refer to Figure 6-9b,
Step B.)
3. Use a suitable arbor press and apply pressure on the spot face directly over the
anchor bolt
hole. (Refer to Figure
6-9b, Step C.)
6-31.
CLEANING, INSPECTION
AND REPAIR
OF WHEEL
BRAKE ASSEMBLY.
NOTE
Heavy
duty wheel assemblies
and brake discs may be
easily
identified
by six
(6) bolt hole
pattern.
Standard wheel
assemblies
and
disc brakes
have a three
(3) bolt hole
pattern.
a. Clean the assembly with
a suitable solvent and dry
thoroughly.
b. Check the
wall of the cylinder housing and
piston for scratches, burrs, corrosion,
etc., that may damage "0" rings.
c. Check
the general
condition of
the brake bleeder
screw and
lines.
d. Check
the brake disc
for wear, grooves,
scratches, or pits.
Minimum service
thickness
of Disc
164-22A
used on Wheel
Assembly
40-90A is
.345. A heavy
duty brake
and wheel
assembly is optional
on PA-32R-300.
The minimum disc
thickness of Disc
164-46 used on
heavy
duty Wheel
Assembly 40-120
is .405.
A single groove
or isolated
grooves up
to .031
of
an inch deep
would not
necessitate
replacement,
but a grooving
of the
entire surface
would
reduce lining
life and would
necessitate
replacement
of the disc.
Should it be
necessary
to remove
the
wheel disc.
refer to
paragraph
6-24.
e. At each
periodic maintenance
inspection,
visually
inspect
both wearing
surfaces of
the
brake disc
for heat checks.
Heat checks
are considered
to be superficial
surface
cracks and
are not
detrimental
to the integrity
or performance
of the braking system.
Replace brake
disc if crack
length exceeds
.800, or crack depth
exceeds .210. If crack
depth is not measurable,
replace disc
if
crack
length exceeds
.400.
NOTE
Any
Crack, Irregardless Or Length
And/Or Depth, Extending
Into
The Welded
Seam Between
The Flange
And Cup, Is
Cause
For Immediate
Replacement.
Revised:
11/4/83
LANDING
GEAR
AND
BRAKE
SYSTEM
PIPER CHEROKEE SIX SERVICE MANUAL
2B9
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