Buick LeSabre 1965 Service Manual page 374

6-8
REAR AXLE
Fig. 6-9—Removing Axle Shaft Seal
check the existing ring gear to
pinion backlash as described in
paragraph 6-6(f). This will indi-
cate gear or bearing wear or an
error in backlash or preload set-
ting which will help in determin-
ing cause of axle noise. Backlash
should be recorded so that if same
gears are reused, they may be
reinstalled at original lash to
avoid changing gear tooth contact.
2. Remove differential bearing
cap bolts. B e a r i n g caps are
marked "R TOP" and "L TOP"
in production to make sure they
will be reassembled correctly.
3. Remove two ring gear retain-
ing bolts from differential case
and install Ring Gear & Case
Remover J- 21322 with slide ham-
mer as shown in Figure 6-11.
Remove case assembly and place
right and left bearing outer races
and shims in sets with marked
bearing caps so that they can be
r e i n s t a l l e d in their original
positions.
f. Disassemble Differential
Case Assembly
1. If differential s i d e bearings
are to be replaced, insert Re-
mover Adapter J-2241-8 in center
hole and pull bearing using Puller
J-2241 or H y d r a u l i c Puller
J-9005. See Figure 6-12.
2. Remove bolt that retains dif-
ferential pinion axle. See Figure
6-13. Remove differential pinions,
side gears and thrust washers
from case.
3. If ring gear is to be replaced
and it is tight on case after re-
moving bolts, tap it off using a
soft hammer; do not pry between
ring gear and case.
g. Remove Pinion Assembly
1. Check pinion bearing preload
as described in paragraph 6- 6(c).
Fig. 6-12—Removing Differential
Side Bearings
If there is no preload reading,
check for looseness of pinion
assembly by shaking. Looseness
indicates need for bearing re-
placement. If assembly is run
long with very loose bearings,
ring and pinion will also require
replacement.
N I O N AXLE
ETAINING BOLT
Fig. 6-11—Removing Differential
Fig. 6-10—Installing Axle Shaft Seal Assembly
Fig. 6-13—Removing Pinion Axle
Retaining Bolt