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20-18
GROUP
20- MAINTENANCE OPERATIONS
W
i
th
drum/
d
i
s
c
and wheel
r
ot
ati ng,
to
rq ue ad jus
ting
nut t
o 17-25
ft lbs
.
Back off adjusting nut
until an end float of
.002-.008"
Selectivly position .tne
nut
loc~
retainer on the
adjysting nut and locr
in post tion
with
a new
cotter pin
.
FIG. 39- Front Wheel Bearing Adjustment
ADJUSTING
NUT
GREASE
CAP
HUB AND ROTOR
ASSEMBLY
INNER
GREASE
BEARING
RETAINER
~~~
INNER BEARING
CONE AND
ROLLER
WHEEL
ASSEMBLY
F 1259
-
A
FIG. 40- Hub and Bearing- Disc Brakes
Keep the hub centred on the
spindle to prevent damage to the
grease retainer or the spindle
threads.
14. Install the outer bearing cone
and roller assembly and the fiat
washer on the spindle; then install
the adjusting nut
(Fig.
40).
15. Adjust the wheel bearings
(Fig.
39) and install a new cotter
pin. Bend the ends of the cotter pin
around the
castellations
of the nut
lock. Install the grease cap.
16. Install the hub cap or wheel
cover.
DISC BRAKES
1. Raise the car until the wheel and
tyre clear the floor.
2. Remove the wheel cover or hub
cap.
3. Remove the wheel and tyre
from the hub.
4. Remove the
bolts
attaching the
caliper to the spindle. Remove the
caliper from the disc and wire it to
the underbody to prevent damage to
the brake hose.
5. Remove the grease cap from the
hub. Remove the cotter pin, nut
lock, adjusting nut, and fiat washer
from the
spindle. Remove
the outer
bearing cone and roller assembly
(Fig. 40).
6. Pull the hub and disc off the
wheel spindle.
7. Remove the grease retainer and
the inner bearing cone and roller
assembly from the hub.
8. Clean the lubricant off the inner
and outer bearing cups with solvent
and inspect the cups for scratches,
pits, excessive wear, and other dam-
age. If the cups are worn or damaged,
remove them from the hub with a
drift.
9. Thoroughly clean the inner and
outer bearing cones and rollers with
solvent, and dry them thoroughly.
Do not spin the bearings with
compressed air.
Inspect the cone and roller assem-
blies for wear or damage, and replace
them if necessary. The cone and
roller assemblies and the bearing
cups should be replaced as a
unit if damage to either is en-
countered.
10. Thoroughly clean the spindle
and the inside of the hub with solvent
to remove all old lubricant.
Cover the spindle with a clean
cloth, and brush all loose dust and
dirt from the brake assembly. To
prevent getting dirt on the spin-
dle, carefully remove the cloth
from the spindle.
11. If the inner
and/
or outer bear-
ing cup(s) were removed, install the
replacement
cup(s).
Be sure to seat
the cups properly in the hub.
. 12. No grease should be packed
mto the hubs between the bearing
cups.
13. All old grease should be com-
pletely cleaned from the bearings
before repacking them, with new
grease. Pack the bearing cone and
roller assemblies with wheel bearing
grease. A bearing packer
is
desirable
for this operation. If a packer is not
available, work as much lubricant as
possible between the rollers and
cages. Lubricate the cone surfaces
with grease.
14. Place the inner bearing cone
and roller assembly in the inner cup,
and install the new grease retainer.
Be sure that the retainer is pro-
perly seated. Smear wheel bear-
ing grease around the seal lip.
15. Install the hub and rotor on the
wheel spindle. Keep the hub cen-
tred on the spindle to prevent
damage to the grease retainer or
the spindle threads.
16. Install the outer bearing cone
and roller assembly and the fiat
washer on the spindle, then install
the adjusting nut.
17. Position the caliper over the
disc and install the attaching bolts.
18. Install the wheel and tyre on
the hub.
19. Adjust the wheel bearings, and
install a new cotter
pin.
Bend the
ends of the cotter pin around the
castellations of the nut
lock.
Install
the grease cap.
20. Install the hub cap or wheel
cover and lower the
car.
CHECK AND ADJUST PARKING
BRAKE LINKAGE
Check the parking brake cables
when the
brakes
are fully released.
If
the cables are loose, adjust them
as follows:
1. Fully release the parking brake
by turning the handle counter clock-
wise and pushing it inward.
2. Pull the parking brake handle
outward to the first notch from its
normal released position.
3. Raise the car and loosen the
adjustment lock nut.
4. Turn the locking adjustment nut
forward against the equalizer until a
moderate drag is felt when turning
the rear
wheels
in the direction of
forward rotation (Fig.
41).
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