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2 - 44
FRONT SUSPENSION
•
on the t o o l screw a t the opposite side o f t h e differen-
t i a l housing. Then i n s t a l l Compression Sleeve Tool
SP-3194-B,
C e n t r a l i z i n g Washer Tool SP-534 a n d
Compression N u t Tool SP-3193 o n t h e tool screw.
(5) L u b r i c a t e the drive p i n i o n gear shaft outer and
inner bearings w i t h M O P A R H y p o i d Gear L u b r i c a n t
(or a n equivalent product).
(6) T i g h t e n the compression n u t tool, w h i l e r e t a i n -
i n g t h e compression sleeve tool w i t h Tool C-3281,
and force t h e drive p i n i o n gear shaft b e a r i n g cups
into t h e differential housing bearing cup bores. A l -
l o w t h e c o m p r e s s i o n t o o l t o r o t a t e s e v e r a l r e v o -
l u t i o n s d u r i n g t h e
tightening
p r o c e s s t o p e r m i t
t h e b e a r i n g r o l l e r s t o p r o p e r l y a l i g n a n d p r e v e n t
" b r i n e l l i n g " o f t h e b e a r i n g cups.
D o n o t r e m o v e t h e t o o l a f t e r
i n s t a l l i n g 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 c u p s . T h e d r i v e
p i n i o n g e a r d e p t h o f m e s h m u s t b e m e a s u r e d
n e x t .
(7) Loosen the n u t tool and t h e n r e - t i g h t e n i t suf-
ficiently
to obtain 1 t o 3 N*m (10 t o 30 in-lbs) o f
bearing "preload" torque. W h i l e
tightening
t h e n u t ,
r o t a t e t h e t o o l t o a l i g n t h e b e a r i n g r o l l e r s .
(8) I n s t a l l Gauge Block Tool SP-3250 on t h e end of
Screw Tool SP-5385 and t i g h t e n the r e t a i n i n g screw
securely w i t h a n A l l e n wrench.
(9) Position Cross Bore A r b o r Tool SP-5183 ( F i g .
58) i n t h e differential bearing cradles ( i n t h e differ-
ential housing). Center the arbor tool i n t h e cradles
so t h a t a n approximately equal space exists a t both
ends.
(10) Observe t h e i n s t a l l a t i o n reference letters and
position t h e differential bearing caps o n t h e arbor
tool (Fig. 58). I n s t a l l the cap bolts and t i g h t e n t h e m
w i t h 14 N»m (10 ft-lbs) torque.
(11) T o measure t h e drive p i n i o n gear depth of
mesh, select and insert a feeler gauge blade t h a t
" s n u g l y " fits between t h e arbor tool and t h e gauge
block tool (Fig. 58). T h e " f i t " m u s t be " s n u g " b u t not
excessively t i g h t . R e c o r d t h e t h i c k n e s s
o f t h e
feeler g a u g e b l a d e so t h a t i t c a n b e u s e d w h e n
d e t e r m i n i n g t h e c o r r e c t d r i v e p i n i o n g e a r d e p t h
s h i m t h i c k n e s s .
(12) Observe t h e depth variance etched i n t o t h e
end o f t h e drive p i n i o n gear (e.g., 0, - 1 , -2, + 1 , + 2 ,
etc.). I f t h e etched depth variance is a "-" (minus)
value, add i t to the thickness measured a n d recorded
i n step (11) above. I f the etched depth variance i s a
" + " (plus) value, subtract i t from the thickness mea-
sured a n d recorded i n step (11) above.
(13) Remove t h e arbor tool from t h e differential
housing c a v i t y a n d t h e other tools ( w i t h t h e outer
and i n n e r bearings) from the housing bore.
(14) Use Removal Tool D-162 and D r i v e r Handle
Tool C-4171 to remove the drive p i n i o n gear shaft i n -
ner (rear) bearing cup from the differential housing
bore.
Fig. 58 Drive Pinion Gear Depth Measurement
(15) Position t h e depth shims i n t h e differential
housing I n n e r (rear) b e a r i n g cup bore and i n s t a l l t h e
bearing cup according t o t h e method previously de-
scribed i n steps (1) t h r o u g h (6) above. W h e n t h e
bearing cup is correctly "seated" i n t h e housing bore,
remove t h e tools a n d t h e d r i v e p i n i o n gear shaft
bearings.
(16) I f t h e drive p i n i o n gear d e p t h o f mesh w i t h t h e
r i n g gear has been correctly established according t o
the instructions and i n f o r m a t i o n provided i n the pro-
cedure above, good gear t e e t h contact should exist.
(17) Lubricate t h e d r i v e p i n i o n gear shaft i n n e r
(rear) bearing w i t h M O P A R H y p o i d Gear L u b r i c a n t
(or a n equivalent product) a n d i n s t a l l the bearing o n
the drive p i n i o n gear shaft w i t h Tool W-262. Use a n
arbor press w i t h the i n s t a l l a t i o n tool (Fig. 59).
(18) I n s t a l l t h e d r i v e p i n i o n gear shaft w i t h t h e
bearing i n the differential h o u s i n g bore.
(19) I n s t a l l t h e o r i g i n a l d r i v e p i n i o n gear shaft
bearing "preload" torque shims followed b y the outer
(front) bearing. D o n o t i n s t a l l t h e s h a f t o i l s l i n g e r
o r seal a t t h i s t i m e .
(20) I n s t a l l the drive p i n i o n gear shaft (axle) yoke,
washer a n d n u t . T i g h t e n t h e n u t w i t h 2 7 1 to 298
N-m (200 to 220 ft-lbs) torque. W h i l e t i g h t e n i n g , r o -
tate drive p i n i o n gear shaft several complete revolu-
tions t o "seat" the b e a r i n g rollers.
(21) Use a Newton-meter or a n inch-pound torque
wrench to rotate t h e d r i v e p i n i o n gear shaft a n d
measure t h e bearing " p r e l o a d " torque (Fig. 60). Ro-
tate the shaft several complete revolutions before r e -
cording
t h e torque.
W i t h
o r i g i n a l bearings, t h e
correct bearing "preload" torque is 1 to 3 N«m (10 t o
20 in-lbs) torque. W i t h replacement
bearings, t h e
correct bearing "preload" torque i s 2 t o 5 N T H (20 t o
40 in-lbs) torque.
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 -
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