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3. Tighten castillated nut to 25-30 lbs .
ft.
torque to position bearings.
(Be sure drum is
rotating while tightening nut) .
4. Back off nut 1/2 turn .
5 . Retighten
nut finger tight,
secure if
possible with cotter pin .
6. If unable to secure at finger tight, back
off nut to first securing position .
7. Check end play between hub and spindle
it should be .001 to .005 inch .
B . Replace inner and outer dust caps.
9 . Adjust. brake shoes as outlined under
BRAKE SHOE ADJUSTMENT .
10 . Be
sure
brake
adjustment
cover
is
installed in lanced area opening of backing
plate, see figure 3.
11 . Install wheel and tire assembly . Refer to
Section 10 of Maintenance Manual X-7525 for
details.
REAR BRAKE SHOE REMOVAL
(Refer to Figure 7)
1 . Hoist vehicle .
Remove wheel and brake
drum .
2 . Remove the brake shoe return springs
actuating link and guide .
3 . Remove
the
brake
shoe
hold-down
springs,
adjuster
lever,
return
spring
and
parking brake lever strut and spring.
4 . Spread
shoes to clear wheel cylinder
links then
remove the brake
shoes as
an
assembly.
5 . Disconnect the parking brake cable from
the operating lever .
6. Using a suitable punch, knock out the
metal blank in backing plate (located at lanced
area, see figure 3) .
Be sure all metal is
removed from the brake assembly .
REAR BRAKE SHOE INSTALLATION
WARNING: WHEN SERVICING WHEEL BRAKE
PARTS DO NOT CREATE DUST BY GRINDING
OR SANDING BRAKE LININGS OR BY CLEAN-
ING WHEEL BRAKE PARTS WITH A DRY
BRUSH OR WITH COMPRESSED AIR . (A WATER
DAMPENED CLOTH SHOULD BE USED .) MANY
WHEEL BRAKE PARTS CONTAIN ASBESTOS
FIBERS WHICH CAN BECOME AIRBORNE IF
DUST IS CREATED DURING SERVICING .
BREATHING
DUST
CONTAINING
ASBESTOS
FIBERS MAY CAUSE SERIOUS BODILY HARM.
1 . Lubricate the adjusting screw threads,
thrust washer mating surfaces and backing
Figure 5-Removing Castillated Nut
Figure 6-Removing Hub and Drum
BRAKES 5-3
plate ledges with brake lubricant, such as Part
No . 1050110 or equivalent .
2 . Assemble the adjusting screw.
3 . Attach the primary to secondary shoe
spring to the-shoes and install the adjusting
screw .
The primary to secondary shoe spring
must not contact the adjusting screw sprocket .
4. Position shoe assembly on the backing
plate.
Be sure wheel cylinder links are pro-
perly positioned in the shoe notches.
5. Position the upper end of the actuating
link on the brake shoe guide .
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