Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 380

Fig. 4B-33--Rem oving O uter B earing and Cup
Inspection and Cleaning o f Bearings
1. Inspect bearing rollers for excessive wear, chipped
edges, and other damage. Slowly move rollers around cone
to detect any flat or rough spots on rollers or cone.
2. Examine 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 damage.
Clean up threads or replace parts where required.
4. Examine oil seal sleeve for evidence of wear or
roughness, check axle housing oil deflector and brake drum
oil deflector for evidence of damage. Replace parts where
required.
5. Examine brake drum for excessive scoring and other
damage. To replace brake drum refer to "Brake Drum
Replacement."
6 . Immerse bearing cone and roller assemblies in
cleaning solvent. Clean with stiff brush to remove old
lubricant. Blow bearings dry with compressed air, directing
air stream across bearing. Do not spin bearings while
blowing them dry.
7. Thoroughly remove all lubricant from axle housing
tube and from inside the hub, wipe dry. Make sure all
particles of gasket are removed from outer end of hub, axle
shaft, and hub cap.
8 . Scrape old sealing compound out of oil seal bore in
the hub.
Bearing/Cup-1 retaliation
1. Place bearing into hub.
outer
2. Install cup of outer bearing into hub by using Handle
J-8092 and J-8608,
installed upside-down
8608 is upside down on driver handle, so that chamfer does
3. Drive cup beyond the snap ring groove.
4. Using a pair of pliers, install snap ring into its groove.
5. Drive cup back
against
as shown in figure 4B-33.
6 . To install bearing cup, use J-24427 on Handle
inner
J-8092. Drive cup into place until it seats against shoulder
of hub bore.
7. Install new oil seal with J-24428.
. Be sure J-
snap ring by using J-24426,
Fig. 4B -34~W heel B olt Replacement
Drum-Non-Demountable-Type-Fig. 4B-31
Replacement
Construction of the nondemountable-type hub and
drum assembly is such that replacement cannot be
accomplished with the hub assembly installed on the
vehicle.
1. Separate the drum and hub by removing the drum-
to-hub retaining bolts, hub stud nuts, or by pressing out the
wheel studs, as applicable.
2. Position brake drum to hub assembly, making
certain that all drain holes are in alignment.
3. Apply a light, even coating of sealing compound to
the hub oil deflector contact surface, and position deflector
to drum.
4. Install drum-to-hub retaining bolts, hub stud nuts,
or press wheel studs into drum, as applicable.
Wheel Bolt
Replacement
Wheel bolts are serrated and may also be swaged in
place; however, replacement procedure remains the same
for both types of installation.
Press bolts out of hub flange and press new bolts into
place, making sure they are a tight fit. If all bolts are
removed, be sure that hub oil deflector is in position under
bolt heads. See figure 4B-34.
Installation of Hub and Drum Assembly
1. Using a high melting point EP bearing lubricant,
liberally pack bearings and apply a light coat on I.D. of hub
bearing contact surface and O.D. of axle housing tube.
2. Make sure inner bearing, oil seal, axle housing oil
deflector, and inner bearing race and oil seal are properly
positioned.
3. Install hub and drum assembly on axle housing,
exercising care so as not to damage oil seal or dislocate other
internal components.
4. Install thrust washer so that tang on I.D. of washer
is in keyway on axle housing.
5. Install adjusting nut and complete the installation
as directed under "Bearing Adjustment."
REAR AX LE 4B-19
LIG H T T R U CK S ER V IC E MANUAL