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REAR AXLES
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housing cover. Add 4 ounces of M O P A R H y p o i d Gear
L u b r i c a n t A d d i t i v e (a f r i c t i o n modifier), or a n equiv-
alent product, to the differential housing. F i l l the dif-
ferential housing to t h e correct level w i t h M O P A R
Hypoid Gear L u b r i c a n t , or a n e q u i v a l e n t product.
(7) I n s t a l l t h e fill hole plug. Remove t h e supports
and lower t h e vehicle.
DIFFERENTIAL
CASE
SERVICE
CAUTION: During removal and installation of the
axle shafts, do not rotate either axle shaft unless
both are properly in-place. Rotation of one axle
shaft without the other being installed can result in
misalignment of the side gears/splines; and, for
correct axle shaft-to-side gear spline engagement,
this will necessitate side gear re-alignment before
the axle shaft can be installed.
REMOVAL
Refer to the differential case r e m o v a l procedure for
a standard differential.
CLEANING/INSPECTION
(1) Clean S u r e - G r i p differential components a n d
case (Fig. 48) w i t h fast evaporating m i n e r a l spirits or
a dry cleaning solvent. W i t h the exception o f the dif-
ferential bearings, d r y t h e case a n d t h e components
w i t h compressed a i r .
(2) Inspect the differential b e a r i n g rollers and cups
for " p i t t i n g " , " s p a l l i n g " and other visible damage. I f
differential bearing replacement i s necessary, remove
the bearings from t h e differential case according t o
the procedure for a standard d i f f e r e n t i a l bearing.
(3) Inspect the differential case for cracks and other
visible damage t h a t could cause i t to be unusable.
INSTALLATION
Refer to t h e differential case i n s t a l l a t i o n procedure
for provided for a standard d i f f e r e n t i a l .
LUBRICANTS
Multi-purpose, hypoid gear l u b r i c a n t , as defined by
MIL-L-2105-B and b y A P I G L 5 q u a l i t y
specifica-
tions, should be used for rear axles w i t h a standard
or a S u r e - G r i p differential. M O P A R Hypoid Gear
L u b r i c a n t conforms t o b o t h o f these
specifications
and i s h i g h l y recommended for use w i t h Ram T r u c k
and Ramcharger vehicles. I n addition, 4 ounces o f
M O P A R Hypoid Gear L u b r i c a n t A d d i t i v e (a f r i c t i o n
modifier), or a n equivalent product, must be included
w i t h a r e - f i l l for a S u r e - G r i p differential.
CAUTION: If a rear axle is submerged in water, the
axle lubricant must be replaced immediately
to
avoid the possibility of premature axle failure re-
sulting from water contamination of the lubricant.
DRAIN/REFILL
(1) D r i v e the vehicle u n t i l the gear l u b r i c a n t i n the
axle attains t h e n o r m a l operating temperature.
(2) Raise and support t h e vehicle.
(3) Remove the l u b r i c a n t fill hole p l u g from the dif-
ferential housing cover.
(4) Remove the differential housing cover and allow
the o r i g i n a l l u b r i c a n t t o completely d r a i n from t h e
housing and t h e axle shaft tubes.
CAUTION: DO NOT FLUSH Sure-Grip differentials.
Sure-Grip differentials may be cleaned only by dis-
assembling the unit and wiping with clean, lint-free
cloths.
(5) F o r standard differentials, flush the differential
and the housing cavity w i t h a " f l u s h i n g " o i l (or l i g h t
engine oil) to remove residual l u b r i c a n t a n d foreign
matter. D o n o t u s e w a t e r ,
s t e a m , k e r o s e n e o r
g a s o l i n e f o r f l u s h i n g .
(6)
I n s t a l l t h e differential
housing
cover a n d
t i g h t e n t h e bolts w i t h 47 N * m (35 ft-lbs) Torque.
(7) Refill the differential housing w i t h the specified
q u a n t i t y o f M O P A R H y p o i d
Gear Lubricant. F o r
S u r e - G r i p differentials, a container of M O P A R H y -
poid Gear L u b r i c a n t A d d i t i v e (a friction
modifier)
must also be added.
(8) I n s t a l l a n d t i g h t e n t h e fill hole p l u g w i t h 34
N u n (25 ft-lbs) torque.
(9) Remove t h e supports and lower the vehicle.
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