Pontiac tempest 1968 Service Manual page 131

4 A-8
1968 P O N T I A C SERVICE M A N U A L
9. Lubricate lip of new seal with clean gear lube.
Coat outer diameter of seal case with suitable
sealer. Install seal by tapping into place, using
J 21285-01 (Fig. 4A-9).
10. Before installing companion flange, inspect
for nicks, scratches or burred surfaces that may
damage the seal. If any such damage is evident, hone
carefully or install new flange.
a. If a new companion flange is installed, refer
to step 6 under COMPANION FLANGE - REMOVE
AND R E P L A C E .
b. If inspection shows the original companion
flange to be satisfactory, replace by holding com-
pantion flange with J 8614-1 and install nut to
exactly the same position as before. Make sure
punched holes and scribe line are in alignment.
Tighten lock nut an additional 1/32" beyond this
alignment.
CAUTION: DO NOT exceed the additional tighten­
ing of the nut by a distance of more than 1/32"
from its original position, as tightening the nut in
excess of this amount will disturb the pinion and
ring gear tooth contact pattern.
11. Connect rear universal joint. Install lock
plates and tighten U-joint to companion flange U -
bolt nut to 12 lbc ft. torque. If lockwashers are used,
tighten U-bolt nuts to 17 lb. ft. torque.
AXLE SHAFT, AXLE SHAFT BEARING,
BEARING OIL SEAL AND/OR
WHEEL BOLT-REMOVE AND REPLACE
REMOVE A X L E SHAFT ASSEMBLIES
Design allows for axle shaft end play up to .032".
This end play can be checked with the wheel and
brake drum removed by measuring the difference
between the end of the housing and the axle shaft
flange while moving the axle shaft in and out by hand.
End play over .032" is excessive. Inserting a shim
inboard of the bearing to compensate for the end play
/
J 21285-01
is not recommended. This ignores end play of the
bearing itself and may result in improper seating
of the gasket or backing plate against the housing.
If the end play is excessive, the axle shaft and bear­
ing assembly should be removed and the cause of
excessive end play determined and corrected.
1. Remove wheels. (Both right and left wheels
have right hand threads.)
2. Remove brake drums.
3. Remove nuts holding retainer plates and brake
backing plates. Pull retainers clear of bolts and
reinstall two lower nuts finger tight to hold brake
backing plate in position.
4. Pull out axle shaft assemblies, using puller
J 21579 and adapter J 2619-4 with slide hammer
J 2619.
CA UTION: While pulling axle shaft out through
oil seal, support the shaft carefully in center of
seal to avoid cutting the seal lip.
REMOVE AND R E P L A C E A X L E SHAFT BEARING
1. Press axle shaft bearing and inner retainer off,
using plate J 6407-P, J 8916-1-T or F and re­
mover J 21858 (Pontiac only). (Fig. 4A-10)
2. Press new axle shaft bearing against shoulder
on axle shaft, using plate J 6407-1 and 2 with in­
staller J 6783-P, J 21002-T or F . (Fig. 4A-11)
NOTE: DO NOT press bearing and inner retainer
on in one operation.
CAUTION: The outer retainer plate, which retains
bearing in housing, must be on axle shaft before
bearing is installed. A new outer retainer gasket
can be installed after bearing. Use care not to
wedge outer retainer between bearing and shoulder
of shaft.
3. Press new inner retainer ring against bearing,
using installer J 6783-P, J 21022-T or F . (Fig.
4A-12)
J 6407-1 PONTIAC ONLY J 21858
J 8916-1 TEMPEST AND PONTIAC ONLY
FIREBIRD '
F i g . 4 A - 9 Installing Pinion O i l Seal
Fig. 4 A - 1 0 Removing A x l e Shaft Bearing (Typicai