Pontiac FIREBIRD 1972 Service Manual page 344

4A-20 1972 PONTIAC SERVICE MANUAL
Place side gear thrust washers over side gear hubs
and install side gears in case. Replace any reused
parts in original sides.
Position one pinion (without washer) between side
gears and rotate gears until pinion is directly opposite
from loading opening in case. Place other pinion be-
tween side gears so that pinion shaft holes are in line,
then rotate gears to make sure holes in pinions will
line up with holes in case.
When holes line up, rotate pinions back toward load-
ing opening just enough to permit sliding in pinion
thrust washers.
Install pinion shaft and pinion shaft locking bolt.
Torque to 15 lb. ft. (Fig. 4A-22).
Using installer J 22761 (B Series), J 21028 (A and G
Series) press on right side bearing with arbor press.
Support opposite bearing with J 8901 (B Series), J
8980 (A and G Series) if already installed (Figs. 4A-
23 and 4A-24).
Reverse differential case, support previously installed
side bearing with J 8901 (B Series), J 8980 (A and G
Series) and press on other side bearing, using J 22761
(B Series) J 21028 (A and G Series) (Fig. 4A-25 and
4A-26).
Lubricate outer bearing surfaces.
PINION ASSEMBLY
REMOVE
1. Check pinion bearing preload. If there is no preload
reading, check for looseness of pinion assembly by
USE ADAPTER J-21028
WITH J-5292 FOR A AND G SERIES
J-8980 A AND
Q
SERIES
Fig. 4A-26 Installing Left Differential Side Bearing
-
B
Series
shaking. Looseness indicates need for bearing re-
placement. 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 8614-10 on pinion flange by using two
5/16" bolts with flat washers. Remove pinion nut and
washer (Fig. 4A-27).
3. Pull companion flange from pinion, using puller J
8614-2 and 3 in holder J 8614-10. To install puller,
Fig. 4A-25 Installing Left Differential Side Bearing - A and
G Series Fig. 4A-27 Removing Pinion Nut