Chevrolet 1977 light duty truck Service Manual page 371

1. Axle Shaft
2. Shaft-to-Hub Bolt
3. Locknut
4. Locknut Retainer
5. Adjusting Nut
6. Thrust Washer
7. Hub Outer Bearing
Fig. 4B-31- Hub and D rum Assem bly—1 0 -1 /2 " Axles
Fig. 4B-32--Removing Lock N u t—Typical
2. Remove outer bearing snap ring with a pair o f
pliers.
3. W ith J-24426 on Handle J-8092, as shown in
figure 4B-33, drive outer bearing and cup from the hub
assembly.
REAR AXLE
8, Snap Ring
9. Hub Inner Bearing
10. Oil Seal
11. Wheel Bolt
12. Hub Assembly
13. Drum Assembly
14. Gasket
Fig. 4B 3 3 - Removing Outer Bearing and Cup
Inspection and Cleaning o f Bearings
1. Inspect bearing
chipped edges, and other damage. Slowly move rollers
around cone to detect any flat or rough spots on rollers
or cone.
2. Exam ine bearing cups in hub for pits, cracks,
and other damage.
3. Examine axle shaft flange studs, wheel studs,
hub splines, hub bore, and tapped holes for evidence of
dam age. Clean up threads or replace
required.
4. Examine oil seal sleeve for evidence o f wear or
roughness, check axle housing oil deflector and brake
drum oil deflector for evidence o f damage. Replace parts
where required.
5. Examine brake drum for excessive scoring and
other damage. To replace brake drum refer to "Brake
D rum Replacement."
6. Immerse bearing cone and roller assemblies in
cleaning solvent. Clean with stiff brush to remove old
lubricant. Blow bearings
directing air stream across bearing. Do not spin bearings
while blowing them dry.
7. Thoroughly remove
housing tube and from inside the hub, wipe dry. Make
sure all particles o f gasket are removed from outer end
of hub, axle shaft, and hub cap.
8. Scrape old sealing com pound out of oil seal bore
in the hub.
Bearing/Cup—Installation
1. Place outer bearing into hub.
2. Install cup o f outer bearing into hub by using
Handle J-8092 and J-8608,
J-8608 is upside down on driver handle, so that ch am fer
does not contact bearing cup.
3. Drive cup beyond
4. Using a pair o f pliers, install snap ring into its
groove.
4 B -19
rollers for excessive wear,
parts where
dry with compressed
all lubricant from axle
Be sure
installed upside-down
the snap ring groove.
air,