Drive Pinion - Chevrolet 1973 Overhaul Manual

3-4 FRONT AXLE DIFFERENTIAL
3. Drive the pinion shaft lock pin out of case.
4. Remove ring gear bolts from case and separate ring
gear from case.
5. Remove pinion shaft, pinions, side gears and thrust
washers from case.

DRIVE PINION

Removal
1. Using Holding Bar J-8614-1, attached to pinion
shaft flange, remove self-locking nut and washer
from pinion shaft.
2. Install Tool J-8614-2, and 3 into holding bar as
shown in Figure 5 and remove flange from drive
pinion. Remove drive pinion from carrier.
3. With a long drift, tap on inner race of outer pinion
bearing to remove pinion oil seal, slinger, gasket,
Fig. 4 —Removing Side Bearings
Fig. 5- Removing Pinion Flange
CHEVROLET OVERHAUL MANUAL
4. Should inspection indicate necessity, pinion bearing
5. Remove inner pinion cone and roller using Tool
Inspection
1. Clean all gears and bearings in cleaning solvent
2. Inspect pinion splines and flange splines for
3. Inspect ring gear and pinion teeth for possible
4. Inspect differential case for cracks or scores or side
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
J-8614-1
outer pinion cone and roller and shim pack. Tag
shim pack for reassembly.
cups can be removed from carrier using a long drift
and hammer. Remove shims and oil slinger which
are located behind the inner bearing cup. Tag
shims for reassembly.
J-22912, installed as shown in Figure 6, and press
pinion from bearing.
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 not
indicate a defective bearing.
evidence of excessive wear.
scoring, cracking or chipping.
gears, thrust washers, and pinion thrust faces.
scoring or evidence of excessive wear.
Fig. 6- Removing Inner Pinion B earing Cone and
Roller