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2 - 72
FRONT SUSPENSION
•
T h e
o u t w a r d
d i r e c t i o n ( p o i n t i n g t o w a r d t h e
y o k e ) i n d i c a t e s t h a t i f t h e d r i v e p i n i o n g e a r
s h a f t d e p t h s h i m t h i c k n e s s i s d e c r e a s e d , t h e d i s -
t a n c e / d e p t h f r o m t h e c e n t e r l i n e o f t h e a x l e / r i n g
g e a r t o t h e d r i v e p i n i o n g e a r f a c e w o u l d b e i n -
c r e a s e d (i.e., i t w o u l d i n c r e a s e t h e d i a l i n d i c a t o r
p l u n g e r
o u t w a r d
(" + ") t r a v e l
d i s t a n c e ) . T h e
s h a f t b e a r i n g " p r e l o a d " t o r q u e s h i m t h i c k n e s s
d o e s n o t a f f e c t t h e d e p t h o f m e s h a d j u s t m e n t .
T h e a r r o w o n t h e r i n g g e a r i n d i c a t e s t h e m e t h o d
o f i n c r e a s i n g o r d e c r e a s i n g
s h i m t h i c k n e s s a t
t h e a p p l i c a b l e side o f t h e d i f f e r e n t i a l case t o i n -
c r e a s e o r d e c r e a s e t h e r i n g g e a r " b a c k l a s h " a n d
t h e d i f f e r e n t i a l b e a r i n g " p r e l o a d " t o r q u e .
REMOVE SHIMS
SHIM PACKS
RY660
Fig. 43 Shim Locations
(18) Remove the measurement tools f r o m the differ-
e n t i a l housing.
(19)
Remove t h e d r i v e p i n i o n gear shaft n u t ,
washer, (axle) yoke, o i l slinger, a n d outer
(front)
bearing.
(20) I n s t a l l the bearing "preload" torque shims t h a t
were removed d u r i n g disassembly (Fig. 43), t h e shaft
outer (front) bearing a n d the o i l slinger o n t h e d r i v e
p i n i o n gear shaft.
(21) A p p l y a l i g h t coating of hypoid gear l u b r i c a n t
on t h e l i p o f drive p i n i o n gear shaft seal, position i t
over the end o f the shaft and i n s t a l l i t i n the differ-
e n t i a l housing bore w i t h Seal I n s t a l l a t i o n Tool C-
3719-A a n d D r i v e r H a n d l e Tool C-4171 (Fig. 44).
(22) I n s t a l l the drive p i n i o n gear shaft (axle) yoke,
Fig. 44 Drive Pinion Gear Shaft Seal Installation
washer, and a replacement n u t on t h e shaft. T i g h t e n
the n u t w i t h 325 to 406 N * m (240 t o 300 ft-lbs)
torque.
(23) Use a Newton-meter or a n i n c h pound torque
wrench (Fig. 42) to rotate the d r i v e p i n i o n gear shaft
and observe t h e indicated b e a r i n g "preload" torque.
The torque necessary to rotate t h e drive p i n i o n gear
shaft should be between 1 to 3 N»m (10 t o 20 in-lbs).
I f t h e d r i v e p i n i o n g e a r s h a f t b e a r i n g
" p r e -
l o a d " t o r q u e i s n o t w i t h i n t h e s p e c i f i e d
t o l e r -
ance, c o r r e c t t h e s h i m t h i c k n e s s a c c o r d i n g l y . T o
i n c r e a s e t h e " p r e l o a d " t o r q u e , d e c r e a s e t h e s h i m
t h i c k n e s s ; t o decrease t h e " p r e l o a d " t o r q u e , i n -
c r e a s e t h e s h i m t h i c k n e s s . S h i m s a r e a v a i l a b l e
i n t h e f o l l o w i n g t h i c k n e s s e s : 0.003, 0.005, 0.010,
a n d 0.030 i n c h (0.076, 0.127, 0.254, a n d 0.762 m m ) .
DRIVE PINION GEAR DEPTH
MEASUREMENT
AND ADJUSTMENT
WITH TOOLSET
0-758-06
The following drive p i n i o n gear depth (i.e., t h e
depth o f the gear teeth mesh between t h e drive p i n -
ion gear and t h e r i n g gear) alternate measurement
and adjustment procedure involves u s i n g A x l e Mea-
surement Gauge Tool Set C-758-D6. Tool Set C-758-
D6 is also used to i n s t a l l the d r i v e p i n i o n gear shaft
bearing cups.
(1) Position each drive p i n i o n gear shaft b e a r i n g
cups i n t h e applicable differential h o u s i n g bore.
(2) B e g i n assembling Tool Set C-758-D6 b y posi-
t i o n i n g D r i v e Pinion Gear Shaft Locating Spacer
Tool SP-5184 on the tool p r i m a r y screw.
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