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Fig. 29 Rotating Drive Pinion Gear Shaft
T h e d i a l i n d i c a t o r p o i n t e r s h o u l d i n d i c a t e a n
i n w a r d ("-")
or o u t w a r d (" +")
m a x i m u m t r a v e l
d i s t a n c e that closely a p p r o x i m a t e s
the
d e p t h
v a r i a n c e etched into the face of the d r i v e p i n i o n
gear.
(16) I f the measurement indicates t h a t t h e a c t u a l
depth variance is w i t h i n 0.002 i n c h (0.05 m m ) of t h e
depth variance etched i n t o t h e drive p i n i o n gear face,
i t is acceptable.
(17) I f the drive p i n i o n gear actual depth variance
is w i t h i n the specified tolerance, continue w i t h the
differential assembly. I f the actual depth variance is
not w i t h i n the specified tolerance, correct t h e s h i m
thickness accordingly a n d t h e n re-measure t h e depth
variance.
F i g u r e 30 depicts a n a r r o w p o i n t i n g
o u t w a r d
a n d i n w a r d w i t h i n the d r i v e p i n i o n g e a r shaft.
T h e
o u t w a r d
d i r e c t i o n
(pointing
t o w a r d
the
yoke) indicates that i f the d r i v e p i n i o n
g e a r
shaft 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 , the d i s -
tance/depth from the c e n t e r l i n e of the axle/ring
g e a r to the drive p i n i o n g e a r face w o u l d be i n -
c r e a s e d (i.e., it w o u l d i n c r e a s e the 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 distance).
T h e
shaft b e a r i n g " p r e l o a d " torque s h i m t h i c k n e s s
does not affect the d e p t h of m e s h adjustment.
T h e a r r o w on the r i n g g e a r i n d i c a t e s the m e t h o d
of i n c r e a s i n g or 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
the a p p l i c a b l e side of the differential c a s e to i n -
c r e a s e or d e c r e a s e the r i n g g e a r " b a c k l a s h " a n d
the differential b e a r i n g " p r e l o a d " torque.
(18) Remove the measurement tools f r o m t h e differ-
e n t i a l housing.
(19)
Remove t h e drive
p i n i o n gear shaft n u t ,
washer, (axle) yoke, o i l slinger, and f r o n t bearing.
(20) I n s t a l l the b e a r i n g " p r e l o a d " torque
shims
(Fig. 30) t h a t were removed d u r i n g disassembly, t h e
shaft front bearing a n d t h e o i l slinger on the d r i v e
p i n i o n gear shaft.
Fig. 30 Shim Locations
(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 the l i p of drive p i n i o n gear shaft seal, position i t
over the end of t h e 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 (for Model 60 and 6 0 M axles) or Tool C-359 (for
Model 70 axles) and D r i v e r Handle Tool C-4171 (Fig.
31).
SEAL
RY659A
Fig. 31 Drive Pinion Gear Shaft Seal Installation
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