Install Differential Case Side Bearings; Remove Pinion Assembly; Disassemble Pinion Assembly - Pontiac Grand Prix Service Manual

4A-18
1 % 9 PONTIAC SERVICE MANUAL
bolts evenly and alternately across diameter to 60 lb.
ft
.
INSTALL DIFFERENTIAL CASE SIDE BEARINGS
1. Remove differential case from vise and lubricate
outer bearing surfaces.
2. Using installer J 5292-P, J 21028-T, F, or G.P. press
on right side bearing with arbor press. Sup ort
opposite bearing with J 8901-P, J 8980-T, F, or G J . i f
already installed (Fig. 4A-3 1).
3). Reverse differential case, support previously in-
stalled side bearing with J 8901-P, J 8980-T, F, or G.P.
and press on other side bearing, using J 5292 for
Pontiac, J 21028 for Tempest, Firebird, or Grand Prix
(Fig. 4A-32).
REMOVE PINION ASSEMBLY
1. Check pinion bearing preload. If there is no preload
reading, check for looseness of pinion assembly by
shaking. Looseness indicates need .for bearing replace-
ment. If assembly is run with loose bearings for any
extended period, ring gear and pinion will also need to
be replaced,
2. Install holder J 86 14-1 on pinion flange by using
two 5/16" bolts with flat washers. Remove pinion nut
and washer (Fig. 4A-33).
3. Pull companion flange from pinion, using puller J
8614-2 and 3 in holder J 8614- 1. To install puller, back
out puller screw, insert puller through holder and
rotate 1 /8 turn (Fig. 4A-34).
4. Remove pinion assembly. If necessary, tap pinion
out with soft hammer, being careful to guide pinion
with hand to avoid damage to bearing outer races.
DISASSEMBLE PINION ASSEMBLY
NOTE: Both fiont bearing and outer race, and rear
bearing and outer race, are matched parts.
If
either
bearing is to be replaced, its matching outer race must
also be replaced.
1. If replacing rear pinion bearing or changing pinion
depth setting, remove rear pinion bearing from pinion
shaft, ushg remover J 9746-P, J 21493-T, F, or G.P.
with holder J 6407- 1 (Fig. 4A-35).
2. If replacing rear pinion bearing, drive outer race
from carrier, using a drift.
3.
Pry
pinion oil seal from carrier and remove front
pinion bearing. If replacing this bearing, drive its outer
r a a from camer, using a drift.
CLEANING AND INSPECTION
1. Check drive pinion stem and gear for excessive
wear.
NOTE: Ring gears and pinions are matched at the
factory and are serviced on& in sets. Never attempt to
replace either a ring gear or pinion without its matching
member.
2. Thoroughly clean and inspect carrier for cracks or
other damage.
Fig. 4A-28 Side Gear Installed in Cap Half of Case Fig. 4A-29 Pinion Gears Installed in Cap Half of Case
Grand Prix Medium Duty
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Grand Prix Medium Duty