Dodge Dakota (ND). Manual — part 38
7. Place proper thickness depth shim (1) on pinion
(2).
8. Install rear bearing (1) on pinion with Installer 6448
(2) and a press (1).
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FRONT AXLE - C205F
ND
9. Install new collapsible preload spacer (1) onto the
pinion.
10. Install pinion gear into housing.
11. Install companion flange with Installer C-3718.
12. Install new pinion nut and tighten to 271 N·m (200
ft. lbs.).
13. With holder (2) and a torque wrench (3) set at
474 N·m (350 ft. lbs.), tighten pinion nut until end
play is taken up.
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FRONT AXLE - C205F
3 - 69
14. Slowly tighten the pinion flange (1) nut in 6.8 N·m
(5 ft. lbs.) increments until rotating torque is
achieved. Measure rotating torque frequently to
avoid overcrushing the collapsible spacer. The
pinion rotating torque should be:
•
Original Bearings: 1 to 2.5 N·m (10 to 20 in. lbs.)
•
New Bearings: 1.7 to 2.5 N·m (15 to 22 in. lbs.)
NOTE: Never loosen pinion nut to decrease pinion
bearing rotating torque and never exceed speci-
fied preload torque.
15. Invert differential case and start two ring gear
bolts. This will provide case-to-ring gear bolt hole
alignment.
16. Invert differential case in the vise.
17. Install new ring gear bolts (2) and alternately
tighten to 108 N·m (80 ft. lbs.).
CAUTION: Never reuse the ring gear bolts. Failure
to follow these instructions will damage bolts.
18. Install differential in axle housing and verify gear
mesh and contact pattern.
19. Install differential cover.
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FRONT AXLE - C205F
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REAR AXLE - 8 1/4
TABLE OF CONTENTS
page
page
REAR AXLE - 8 1/4
. . . . . . . . . . . . . . . . . . . . 71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
. . . . . . . . . . . . . . . . . . . . . . . . . 76
. . . . . . . . . . . . . . . . . . . . . . . . 77
. . . . . . . . . . . . . . . . . . . . . . . 84
. . . . . . . . . . . . . . . . . . . . . . . . 85
SHAFT-AXLE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
. . . . . . . . . . . . . . . . . . . . . . . . . 88
SEAL-AXLE SHAFT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
. . . . . . . . . . . . . . . . . . . . . . . . . 90
BEARING-AXLE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
. . . . . . . . . . . . . . . . . . . . . . . . . 91
SEAL-PINION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
. . . . . . . . . . . . . . . . . . . . . . . . . 93
DIFFERENTIAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
. . . . . . . . . . . . . . . . . . . . . . . . . 96
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
. . . . . . . . . . . . . . . . . . . . . . . . . 98
DIFFERENTIAL-TRAC-LOK
. . . . . . . . . . . . . . . . . . . . . . . . . . . 98
. . . . . . . . . . . . . . 99
BEARINGS-DIFFERENTIAL CASE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
. . . . . . . . . . . . . . . . . . . . . . . . 100
GEAR-PINION/RING/TONE RING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
. . . . . . . . . . . . . . . . . . . . . . . . 105
REAR AXLE - 8 1/4
DIAGNOSIS AND TESTING
REAR AXLE - 8 1/4
GEAR NOISE
Axle gear noise can be caused by insufficient lubricant, incorrect backlash, incorrect pinion depth, tooth contact,
worn/damaged gears, or the carrier housing not having the proper offset and squareness.
Gear noise usually happens at a specific speed range. The noise can also occur during a specific type of driving
condition. These conditions are acceleration, deceleration, coast, or constant load.
When road testing, first warm-up the axle fluid by driving the vehicle at least 5 miles and then accelerate the vehicle
to the speed range where the noise is the greatest. Shift out-of-gear and coast through the peak-noise range. If the
noise stops or changes greatly check for:
•
Insufficient lubricant.
•
Incorrect ring gear backlash.
•
Gear damage.
Differential side and pinions gears, usually do not cause noise during straight-ahead driving, when the gears are
unloaded. The side gears are loaded during turns. A worn pinion mate shaft can also cause a snapping or a knock-
ing noise.
BEARING NOISE
Bearing noise can be either a whining or a growling sound.
Pinion bearings have a constant high pitch noise, because it rotates at a faster rate. This noise changes with
vehicle speed. If noise is heard under a load, the rear pinion bearing is the source. If noise is heard during a coast,
the front pinion bearing is the source.
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REAR AXLE - 8 1/4
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