Pontiac FIREBIRD 1972 Service Manual page 273

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1972 PONTIAC SERVICE MANUAL
5. Remove dust cap from hub.
solvent (such as denatured alcohol). Make sure
wiping cloth and fluid do not become loaded
6.
Remove cotter pin, spindle nut and washer from
with grease from repeated use.
spindle.
Inspect brake linings for grease contamination.
7. Remove hub and disc assembly from spindle.
Clean by w~ping with a non-flammable, non-
toxic solvent (such as denatured alcohol).
CAUTION: When hub and disc assembly ispar-
tially loose on spindle, remove outer wheel
1. Apply a light coat of lubricant to spindle and inside
bearing. DO NOT DROP BEARING.
surface of hub (Fig. 3-13).
8. Remove inner bearing from hub by tapping out inner 2. Place inner bearing in race of hub.
grease seal with a brass drift. DISCARD SEAL.
3. Install a new grease seal in hub.
9. Wipe old grease out of hub and from spindle of steer-
ing knuckle. 4. Carefully install hub and disc assembly on spindle.
10. Wash bearings in solvent and air-dry. Do not spin dry
,
with compressed air. Inspect bearings and races for
cracking, pitting, etching, etc.
NOTE: I f necessary to replace either a bearing
(inner race and rolls assembly) or its outer race,
both beanng and outer race should be replaced
together.
When inspecting or replacing bearing (inner
race and rolls assembly), make sure the race is
free to creep on spindle. The inner race is de-
signed to creep on the spindle in order to afford
a constantly changing load contact bet ween the
race and the roller bearings. Polishing the spin-
dle and applying bearing lubricant will permit
creeping andprevent rust forming bet ween race
and spindle (Fig. 3-1 3).
11. If necessary to replace an outer race, drive out old
race from the hub with a brass drift inserted behind
race in notches in hub. Install new race by driving it
into hub with a brass drift.
NOTE: Use care when installing new race to
start it squarely into hub, to avoid distortion
and possible cracking.
12. Use a bearing lubricator if available and thoroughly
lubricate bearing assemblies with new high melting
point wheel-bearing lubricant. Remove any excess
lubricant.
NOTE: Be sure bearing parts have been
thoroughly cleaned and air-dned because bear-
ing lubricant will not adhere to wet or oily
surfaces.
INSTALL
NOTE: Inspect rotor lining contact area for
grease. Clean with a non-flammable non-toxic
5. Install outer wheel bearing.
CAUTION: See CAUTION on page l of this
Section regarding the fasteners referred to in
steps 6, 8 and 10.
6. Install washer and spindle nut.
7. Adjust wheel bearings as outlined under ADJUST-
MENT PROCEDURES.
8. Position caliper, install and tighten two caliper
mounting bolts to 35 lb. ft. torque.
9. Install dust cap on hub.
10. Install wheel and tighten nuts to 70 lb. ft. torque.
11. Install hub cap or wheel disc.
12. Lower car to ground.
WHEEL BEARING (A, G 81 X SERIES)
REMOVE
1. Raise car and support at front lower control arm.
2. Remove hub cap or wheel disc from wheel.
3. Drum Brakes: Remove dust cap from hub.
Disc Brakes: ~ e m o v e wheel and tire assembly before
removing dust cap from hub.
4.
Drum Brakes: Remove cotter pin, spindle nut and
washer from spindle, then remove wheel with hub
and drum assembly from spindle with a gentle rock-
ing motion.
CAUTION: When hub and wheel assembly is
partially loose on spindle, remove outer wheel
beanng. DO NOT DROP BEARING.