Pontiac tempest 1968 Service Manual page 138

S T A N D A R D DIFFERENTIAL
4A-15
2. Remove nicks and burrs with mill file.
J 8107-4 PONTIAC J 22888
J 8107-2 TEMPEST - OR
AND ^ . • ^ J 8107
FIREBIRD £ -
F i g . 4A-24 Removing Differential Side Bearing
NOTE: Ring gear to case bolt have left hand
threads, Pontiac only.
12. Partially re-install two bolts on opposite sides
of ring gear.
13. Remove ring gear from case by alternately
tapping on bolts.
CAUTION: Do not pry between case and ring
gear.
CLEANING AND INSPECTION
1. Thoroughly clean differential case and inspect,
paying particular attention to ring gear mounting
flange, ring gear pilot, side bearing hubs, thrust
washer surfaces, pinion shaft bore and side gear
hub bores.
NOTE: When using a new case, thoroughly clean
new case in suitable solvent, making certain all
holes and bores are clean of steel filings and
foreign material.
3. Clean side gears, pinion gears, pinion shaft
and thrust washers with suitable solvent. Inspect for
excessive wear.
4. Thoroughly clean ring gear and inspect back
side for any adhering material which may cause
runout.
5. Position ring gear on case and check fit of gear
on flange and pilot. It should be from .002" tight to
.001" loose. If ring gear easily falls into position,
it must be replaced.
NOTE: If ring gear is replaced, pinion gear must
also be replaced as they are only serviced in
matched sets.
6. Replace parts as necessary and coat with clean
gear lube before installing in case.
ASSEMBLE D I F F E R E N T I A L CASE
1. After making sure that mating surfaces are
clean and free of burrs, position ring gear on case
so holes are in line.
2. Lubricate attaching bolts with clean engine oil
and install.
3. Pull ring gear onto case by alternately tighten­
ing bolts around case. When all bolts are snug,
tighten bolts evenly and alternately across diameter
to 90 lb. ft. torque for Pontiac; 60 lb. ft. torque for
Tempest or Firebird.
CA UTION: Do not use hammer to force ring gear
on case.
F i g . 4A-25 Removing Pinion Shaft
4. Place side gear thrust washers over side gear
hubs and install side gears in case. Replace any re­
used parts in original sides.
5. Position one pinion (without washer) between
side gears and rotate gears until pinion is directly
opposite from loading opening in case. Place other
pinion between 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.
6. When holes line up, rotate pinions back toward
loading opening just enough to permit sliding in
pinion thrust washers.
7. Install pinion shaft and pinion shaft locking
bolt. Torque to 15 lb. ft. (Fig. 4A-26).