Chevrolet 1977 10 Series, Repair Manual, Page: 160 / 468

4C-4 OVERHAUL MANUAL
J 2 2 8 8 8
Fig. 4 C -4 -R e m o v in g S ide B e a rin g
drive pinion from carrier.
3. W ith a long drift, tap on inner race of outer pinion
bearing to remove pinion oil seal, slinger, gasket, outer pinion
cone and roller and shim pack. Tag shim pack for reassembly.
4. Should inspection indicate necessity, pinion bearing
cups can be removed from carrier using a long drift and
ham m er. Remove shims and oil slinger which are located
behind the inner bearing cup. Tag shims for reassembly.
5. Remove inner pinion cone and roller using Tool J-
22912, installed as shown in Figure 4C-6, and press pinion
from bearing.
Inspection
1. Clean all gears and bearings in cleaning solvent and
inspect all bearing cups, races and rollers for scoring,
chipping or evidence of excessive wear. On pinion bearing
rollers, inspect large end of rollers for wear. This is where
wear is most evident on tapered roller bearings.
NOTE:
The pinion bearings are of the tapered type, and
the natural wear pattern is a frosted condition with
occasional slight scratches on races or rollers. This does
Fig. 4C -6--R e m o vin g In n e r P in io n B e a rin g Cone and R o lle r
not indicate a defective bearing.
2. Inspect pinion splines and flange splines for evidence
of excessive wear.
3. Inspect ring gear and pinion teeth for possible scoring,
cracking or chipping.
4. Inspect differential case for cracks or scores on side
gears, thrust washers, and pinion thrust faces.
5. Check fit of differential side gears in case.
6. Check fit of side gears and axle shaft splines.
7. Inspect differential pinion shaft and spacer for scoring
or evidence of excessive wear.
DIFFERENTIAL CASE
Reassembly
1. Position differential side gears and new thrust washers
in differential case.
2. Position differential pinions and new thrust washers
in differential case. Align pinions with holes in differential
case.
3. Install pinion shaft in differential case. Align hole in
shaft with hole in case, then install lock pin. Peen hole to
prevent pin dropping out of case.
4. Position ring gear to case, then install cap screws.
Tighten cap screws evenly and alternately to specifications.
J-86 14-1
Fig. 4C-5--Removing Pinion Flange
Fig. 4C -7-C hecking Runout