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(3) To ensure the correct driveline balance, scribe
alignment m a r k s i n t o t h e drive shaft U-joint yoke
and the drive p i n i o n gear shaft (axle) yoke before re-
moval of t h e drive shaft for i n s t a l l a t i o n reference.
(4) Disconnect the drive shaft yoke from the drive
pinion gear shaft (axle) yoke and secure i n a n up-
r i g h t position t o prevent damage to t h e front U-joint.
(5) Remove t h e differential housing cover bolts,
d r a i n the l u b r i c a n t and remove the cover.
(6) Wash a n d clean t h e inside o f the differential
housing and t h e differential case w i t h an appropriate
cleaning solution.
(7) T u r n t h e differential case so t h a t p i n i o n gear
mate shaft lock screw is accessible (Fig. 13). Remove
the lock screw and p i n i o n gear mate shaft. Force
both axle shafts t o w a r d t h e center o f the vehicle and
remove the C-clip "locks" f r o m the recessed grooves
at the ends o f the axle shafts (Fig. 14).
Fig. 13 Pinion Gear Mate Shaft Lock Screw
Fig. 14 Axle Shaft C-Clip Lock
(8) Remove t h e axle shafts f r o m t h e differential
housing. U s e c a r e t o p r e v e n t d a m a g i n g t h e a x l e
s h a f t b e a r i n g ,
w h i c h w i l l r e m a i n i n t h e a x l e
s h a f t t u b e .
R e c o r d t h e d i f f e r e n t i a l case " s i d e p l a y " a n d
t h e r i n g g e a r " r u n o u t " m e a s u r e m e n t s , t h e y w i l l
b e v e r y u s e f u l d u r i n g a s s e m b l y .
(9) Test for differential case "side p l a y " w i t h a
s m a l l p r y bar or pinch bar (Fig. 15) placed between
the left side o f the differential housing and the dif-
ferential case flange. Use a p r y i n g motion to deter-
m i n e i f a n y "side p l a y " exists. Ideally, there should
be no "side play".
RING GEAR
J9003-55
Fig. 15 Differential "Side Play" Test
D i f f e r e n t i a l case " s i d e p l a y " t h a t i s t h e r e s u l t
o f t h e b e a r i n g ( s ) b e c o m i n g loose from t h e d i f f e r -
e n t i a l case h u b s r e q u i r e s r e p l a c e m e n t o f t h e dif-
f e r e n t i a l
case.
O t h e r w i s e ,
u s e t h e t h r e a d e d
d i f f e r e n t i a l b e a r i n g a d j u s t e r t o r e m o v e t h e " s i d e
p l a y " b e f o r e m e a s u r i n g t h e r i n g g e a r " r u n o u t " .
(10) I n preparation for measuring t h e r i n g gear
" r u n o u t " (after a n y existing differential case "side
p l a y " has been eliminated), attach D i a l Indicator
Tool C-3339 t o P i l o t Stud Tool C-3288-B w i t h the i n -
dicator plunger a t a r i g h t angle (90°) to back face of
t h e r i n g gear (Fig. 16). The plunger should exert a
s l i g h t force against the r i n g gear back face.
(11) Measure the r i n g gear " r u n o u t " by t u r n i n g the
r i n g gear several complete revolutions and observing
the d i a l indicator pointer. M a r k the r i n g gear and
t h e d i f f e r e n t i a l case a t t h e location of m a x i m u m
" r u n o u t " . The r i n g gear " r u n o u t " should be no more
t h a n 0.005 i n c h (0.13 m m ) . I f the " r u n o u t " exceeds
0.005 i n c h (0.13 mm), a damaged differential case
could be t h e cause. A procedure for measuring the
d i f f e r e n t i a l case flange " r u n o u t " is explained below.
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