Dodge D150 1990 Service Manual page 186

Rear wheel drive ram truck
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WHEEL BEARING SERVICE
CAUTION: Whenever a rear axle is being serviced
or anytime it is to be rotated via the engine (or by
another means), RAISE BOTH REAR WHEELS off
the surface.
(1) Raise a n d support t h e vehicle.
(2) Remove the axle shaft. I f necessary, refer to the
removal procedure.
(3) Remove the n u t lock a n d loosen t h e adjustment
n u t .
(4) T i g h t e n t h e adjustment n u t w i t h 163 t o 190
N»m (120 t o 140 ft-lbs) torque w h i l e r o t a t i n g t h e
wheel.
(5) Loosen t h e adjustment n u t 1/3 of-a-turn (120
degrees) t o provide 0.001-inch to 0.008-inch wheel
bearing "end play".
(6) " T a p " t h e n u t lock i n t o t h e spindle keyway.
(7) I n s t a l l a replacement flange gasket a n d t h e
axle shaft. I f necessary, refer t o the i n s t a l l a t i o n pro-
cedure.
(8) Remove the supports a n d lower t h e vehicle.
COMPLETE AXLE REMOVAL/INSTALLATION
REMOVAL
I f i t i s necessary t o remove the complete rear axle
from t h e vehicle, use t h e f o l l o w i n g procedure.
(1) Raise t h e rear o f t h e vehicle u n t i l t h e rear
wheels/tires are not contacting the surface. Support
the vehicle body a t the f r o n t o f the rear springs.
(2) Use a wooden block to r e t a i n the brake pedal i n
the " u p " position (i.e., t h e disengaged position).
(3) Remove t h e axle shafts, t h e wheels/tires, t h e
hubs and t h e brake d r u m s . I f necessary, refer t o the
applicable removal procedures.
(4) Disconnect t h e b r a k e
fluid
t u b i n g from t h e
brake
fluid
flexible
hose fittings and "cap" t h e fit-
tings t o prevent loss of b r a k e
fluid.
(5) Disconnect the p a r k i n g brake cables.
T o
e n s u r e t h a t t h e d r i v e l i n e b a l a n c e i s r e -
t a i n e d w h e n t h e d r i v e s h a f t i s i n s t a l l e d , s c r i b e
i n s t a l l a t i o n a l i g n m e n t r e f e r e n c e
m a r k s o n t h e
d r i v e s h a f t U - j o i n t a n d o n t h e d r i v e p i n i o n g e a r
s h a f t (axle) y o k e b e f o r e r e m o v a l .
(6) Disconnect t h e d r i v e shaft U-joint from t h e
drive p i n i o n gear shaft (axle) yoke and secure i t i n
an u p r i g h t position to prevent damage t o the U-joint.
(7) Remove the rear shock absorbers and the rear
spring U-bolts f r o m the axle.
(8) Remove the rear axle f r o m the vehicle.
INSTALLATION
(1) I f the differential h o u s i n g cover was removed,
ensure t h a t the differential housing a n d cover m a t -
i n g surfaces are clean.
(2) I f the differential housing cover was removed,
apply a "bead" of M O P A R Silicone Rubber Sealant
(or a n equivalent sealant) around the cover bolt cir-
cle. I n s t a l l t h e differential housing cover. T i g h t e n
t h e cover bolts w i t h 47 N*m (35 ft-lbs) torque. I n s t a l l
t h e a x l e g e a r r a t i o i d e n t i f i c a t i o n t a g u n d e r o n e
o f t h e c o v e r b o l t s .
(3) W i t h the vehicle body supported a t the f r o n t o f
the rear springs, position t h e axle under t h e rear
springs.
(4) I n s t a l l the spring U-bolts and t i g h t e n the n u t s
w i t h t h e specified torque (refer to Group 17—Springs
A n d Shock Absorbers).
(5) I n s t a l l the shock absorbers. T i g h t e n the r e t a i n -
i n g n u t s w i t h t h e specified torque (refer to Group
17—Springs A n d Shock Absorbers).
(6) Connect the p a r k i n g brake cables.
(7) Connect t h e brake fluid t u b i n g t o t h e b r a k e
fluid
flexible
hose fittings. I n s t a l l the hubs and b r a k e
drums. Adjust t h e wheel bearings (refer to Wheel
B e a r i n g Adjustment).
(8) Remove the block from the brake pedal. " B l e e d "
and adjust the brakes.
(9) Connect the drive shaft to the drive p i n i o n gear
shaft (axle) yoke
w i t h t h e i n s t a l l a t i o n reference
m a r k s aligned. T i g h t e n the U-joint clamp bolts w i t h
2 1 N-m (16 ft-lbs/186 in-lbs) torque.
(10) I n s t a l l t h e rear wheels/tires and t i g h t e n t h e
l u g n u t s w i t h t h e specified torque (refer to Group
2 2 - W h e e l s A n d Tires).
(11) Clean the axle shaft flange gasket contact sur-
face areas w i t h a a n appropriate cleaning solvent, i n -
s t a l l replacement flange gaskets and slide the axle
shafts i n t o the axle shaft tubes.
(12) I n s t a l l t h e Durlock bolts. T i g h t e n t h e bolts
w i t h 95 N-m (70 ft-lbs) torque.
(13) Raise the rear of the vehicle, remove the sup-
ports, level the vehicle and position the supports.
(14) Remove the fill hole p l u g from t h e d i f f e r e n t i a l
housing cover. F i l l t h e differential housing t o 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 equivalent product.
I n a d d i t i o n , f o r T r a c - L o k d i f f e r e n t i a l e q u i p p e d
a x l e s , 4 o u n c e s o f M O P A R H y p o i d G e a r 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 m o d i f i e r ) , o r a n e q u i v a -
l e n t p r o d u c t , m u s t b e i n c l u d e d i f t h e d i f f e r e n t i a l
h o u s i n g i s b e i n g r e - f i l l e d .
(15) I n s t a l l the fill hole plug. Remove the supports
and lower the vehicle.
(16) Road test the vehicle to evaluate t h e results o f
t h e repair.

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