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FRONT SUSPENSION
2 - 47
(17) Remove t h e master bearing tools from the dif-
ferential case hubs.
(18) Position t h e "backlash" shims ( w i t h t h e re-
quired thickness determined above) o n t h e differen-
t i a l case hub ( r i n g gear side). Place the differential
bearing o n the h u b and i n s t a l l i t w i t h B e a r i n g I n -
stallation Tool C-4028-A and D r i v e r H a n d l e Tool C-
4171 (Fig. 64).
BEARING
INSTALLER TOOL
Fig. 64 Differential Bearing Installation
(19) Position the r e m a i n i n g "zero" "end-play" shims
on t h e h u b a t t h e opposite side of the differential
case. Include a n additional 0.015-in (0.38-mm) t h i c k
s h i m on t h i s h u b to provide the required differential
bearing "preload" torque.
(20) I n s t a l l t h e other differential b e a r i n g on t h e
h u b w i t h B e a r i n g I n s t a l l a t i o n Tool C-4028-A a n d
D r i v e r Handle Tool C-4171 (Fig. 64).
(21) M a t c h each bearing cap w i t h i t s differential
bearing (original) counterpart and i n s t a l l t h e caps on
the bearings.
(22) Position Spreader Tool W-129-A o n t h e differ-
e n t i a l housing w i t h the tool dowel pins "seated" i n
t h e locating holes ( F i g . 62). I n s t a l l t h e holddown
clamps
a n d t i g h t e n t h e tool t u r n b u c k l e
"finger-
t i g h t " .
(23) I n s t a l l a p i l o t stud a t the left side o f the dif-
ferential housing. A t t a c h D i a l Indicator Tool C-3339
to the differential housing (via the p i l o t stud) w i t h
the indicator plunger s l i g h t l y "loaded" against t h e
opposite side o f the differential housing (Fig. 62).
"Zero" the d i a l indicator pointer.
CAUTION: Do not exceed the specified separation
distance when separating the differential housing. If
the housing is over-separated, it could be distorted
or damaged, which would necessitate replacement.
(24) T i g h t e n the spreader t o o l t u r n b u c k l e (Fig. 62)
and separate the differential h o u s i n g only enough to
i n s t a l l the differential case i n the housing. S e p a r a t e
t h e d i f f e r e n t i a l h o u s i n g a m a x i m u m d i s t a n c e o f
0.38 n u n (0.015 i n ) w i t h t h e s p r e a d e r t o o l . Mea-
sure the separation distance w i t h t h e d i a l indicator
(Fig. 62) as the housing is b e i n g separated.
(25) Remove the d i a l i n d i c a t o r tool and t h e p i l o t
stud (Fig. 62) w h e n the d i f f e r e n t i a l housing has been
separated sufficiently to i n s t a l l t h e differential case
i n the housing.
(26) I n s t a l l the differential case i n the differential
housing.
(27) Remove the holddown clamps and the spreader
tool from the differential h o u s i n g (Fig. 62).
(28) I n s t a l l t h e differential b e a r i n g caps. Ensure
t h a t the i n s t a l l a t i o n reference l e t t e r stamped i n each
cap corresponds t o the letter stamped i n the differen-
t i a l housing (Fig. 65). T i g h t e n t h e bearing cap bolts
w i t h 95 t o 122 N*m (70 to 90 ft-lbs) torque.
Fig. 65 Differential Bearing Cap Reference Letters
(29) Measure t h e r i n g gear " b a c k l a s h " a t four
equally spaced locations a r o u n d the perimeter of the
r i n g gear w i t h a d i a l indicator (Fig. 66).
T h e r i n g g e a r " b a c k l a s h " m u s t b e w i t h i n 0.005
- 0.009 i n c h (0.13 - 0.23 m m ) a n d i t c a n n o t v a r y
m o r e t h a n 0.003 i n c h (0.08 m m ) a t a n y o f t h e
m e a s u r e m e n t
l o c a t i o n s .
(30) Excessive "backlash" is corrected b y moving
the r i n g gear teeth closer t o t h e drive p i n i o n gear
teeth. Insufficient "backlash" is corrected by moving
the r i n g gear teeth away f r o m the drive p i n i o n gear
teeth.
" B a c k l a s h "
correction
is accomplished
by
t r a n s f e r r i n g shims from one side of the differential
case to the other (Fig. 56).
RING GEAR TEETH
CONTACT
PATTERNS
I f the drive p i n i o n gear depth o f mesh and the r i n g
gear "backlash" have been correctly established ac-
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