Chevrolet 1977 light duty truck, Service Manual

Page: 291 / 861

COMPONENT PARTS REPLACEMENT
W HEEL HUB S, B E A R IN G S (Fig. 3 C -1 4 )
Removal C, G and P Series
1. Raise vehicle on hoist and remove wheel and
tire assembly. Remove dust cap from end o f hub and
w ithdraw cotter pin.
2. Rem ove the brake caliper and h a n g by wire to
the suspension.
CAUTION: Do not allow the caliper assembly
to hang by the brake fle x line.
3. Rem ove h u b and disc assembly.
4. Rem ove outer b earin g from hub. The in n e r
b earin g will rem ain in the hub and may be removed by
prying out the in n e r grease seal.
5. W ash all parts in cleaning solvent.
Inspection
1. Check all bearings for cracked bearing cages,
w orn o r pitted rollers.
2. Check bearing races for cracks o r scoring, check
brake discs for out-of-round o r scored conditions and
check b earin g outer races fo r looseness in hubs.
Repairs
Replacem ent o f Bearing Cups
If necessary to replace an outer race, drive out old
race from the hub with a brass d rift inserted behind race
in notches in hub. Install new race by driving it into hub
with the p ro p e r race installer J-8457, J-8458. J-8849 or
J-9276-2. Remove and install the in n e r race in the same
m an n er.
CAUTION: Use care when installing new race
to start it squarely into hub , to avoid distortion
a n d possible cracking.
Thoro u g h ly lubricate bearing assemblies with new
high melting point w heel-bearing lubricant. Remove any
excess iubricant.
N O T E : Be sure bearing parts have been th o r­
oughly cleaned and air-dried.
W heel S tu d Replacem ent (Fig. 3C -14)
N O T E : Use a piece o f w ater pipe or other similar
tool to support the h u b while pressing a wheel stud
either in or out.
Installation
CAUTION: See C A U T IO N on page 1 o f this
section regarding the fa sten e rs referred to in
steps 3, 4 a n d 5.
1. Pack inner and outer wheel bearings with
recom m ended grease (see Section 0).
2. Place inner bearing in hub and install new seal
assembly, tap p in g into place with soft h am m er.
3. Position hub and disc on spindle and install
outer bearing, pressing it firmly into position in hub.
Install hub w asher and finger tighten nut.
4. Install brake caliper see section 5.
5. Install wheel and tire, and adjust wheel bearings
as outlined u nder W heel Bearings—Adjust, then lower
vehicle to floor.
SHOCK ABSORBER
Removal (Fig. 3C-15)
1. Raise vehicle on hoist.
2. Remove nuts and eye bolts securing upp er and
lower shock ab so rb er eyes.
3. W ithdraw shock ab so rb er and inspect ru b b er