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FRONT SUSPENSION
2 - 73
(3) Position t h e drive p i n i o n gear shaft i n n e r (rear)
b e a r i n g o n t h e tool p r i m a r y screw a n d insert t h e
screw ( w i t h t h e bearing) i n t o and t h r o u g h t h e differ-
e n t i a l h o u s i n g bore.
(4) Position t h e drive p i n i o n gear shaft outer (front)
b e a r i n g o n t h e tool p r i m a r y screw a t t h e opposite
side o f t h e differential housing. I n s t a l l Compression
Sleeve Tool SP-535-A, C e n t r a l i z i n g Washer Tool SP-
534 a n d P r i m a r y Screw N u t Tool SP-533 o n t h e tool
p r i m a r y screw.
(5) L u b r i c a t e the drive p i n i o n gear shaft outer a n d
i n n e r (front and rear) 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 t h e n u t tool, w h i l e r e t a i n i n g the com-
pression sleeve tool w i t h Tool C-3281, and force t h e
d r i v e p i n i o n gear shaft bearing cups into t h e differ-
e n t i a l h o u s i n g 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 -
B n g " o f t h e b e a r i n g c u p s .
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 t h e n u t tool and t h e n re-tighten i t suf-
f i c i e n t l y t o o b t a i n 1 t o 3 N»m (10 to 30 in-lbs) o f
b e a r i n g " p r e l o a d " torque. W h i l e t i g h t e n i n g 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-5260 on Tool Set
C-758-D6 (Fig. 45) and t i g h t e n t h e 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 .
45) i n t h e differential bearing cradles ( i n t h e differ-
e n t i a l housing). Center the arbor tool i n the cradles
so t h a t a n approximately equal space exists a t b o t h
ends.
(10) Observe t h e i n s t a l l a t i o n reference letters a n d
position t h e differential bearing caps on t h e arbor
tool (Fig. 45). I n s t a l l t h e cap bolts and t i g h t e n t h e m
w i t h 95 t o 122 N*m (70 to 90 ft-lbs) torque.
(11) To measure t h e drive p i n i o n gear depth o f
mesh, select a n d 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. 45). 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
f e e l e r 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 the etched depth variance is a "-" (minus)
value, add i t to the thickness measured and recorded
i n step (11) above. I f the etched depth variance is a
" -f " (plus) value, subtract i t f r o m the thickness mea-
sured and recorded i n step (11) above.
RH1400
Fig. 45 Drive Pinion Gear Depth Measurement
(13) Remove t h e arbor tool f r o m t h e differential
housing cavity and t h e tool set ( w i t h t h e outer and
inner/front and rear bearings) f r o m t h e housing bore.
(14) Use Removal Tool D-162 and D r i v e r Handle
Tool C-4171 to remove t h e drive p i n i o n gear shaft
rear bearing cup f r o m the differential housing bore.
(15) Position t h e depth shims i n t h e differential
housing rear bearing cup bore and i n s t a l l t h e bear-
i n g cup according t o the method previously described
i n steps (1) t h r o u g h (6) above. W h e n the b e a r i n g cup
is correctly "seated" i n the housing bore, remove the
tool set and the drive p i n i o n gear shaft bearings.
(16) I f the drive p i n i o n gear depth o f mesh w i t h the
r i n g gear has been correctly established according to
the instructions and i n f o r m a t i o n provided i n t h e pro-
cedure above, good gear teeth contact should exist.
(17) Lubricate t h e drive 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) and i n s t a l l t h e b e a r i n g o n
the drive p i n i o n gear shaft w i t h Tool C-3095-A. Use
an arbor press w i t h the i n s t a l l a t i o n tool (Fig. 46).
(18) I n s t a l l t h e drive p i n i o n gear shaft w i t h t h e
bearing i n the differential housing bore.
(19) I n s t a l l t h e o r i g i n a l drive p i n i o n gear shaft
bearing "preload" torque shims followed b y t h e 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 s e a l a t
t h i s
time.
(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 339 t o 366
N n n (250 to 270 ft-lbs) torque. W h i l e t i g h t e n i n g , ro-
tate drive p i n i o n gear shaft several complete revolu-
tions to "seat" the bearing rollers.
(21) Use a Newton-meter or a n inch-pound torque
wrench t o rotate t h e drive p i n i o n gear shaft a n d
measure t h e bearing "preload" torque (Fig. 47). Ro-
tate the shaft several complete revolutions before re-
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