GMC chervolet camaro 1999 Service Manual page 459

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4-44 Rear Drive Axle
180092
1
180096
180095
Driveline/Axle.
10.
Inspect the differential ring gear t~eth for a tooth
contact pattern
(1 ).
11.
The pattern is acceptable if the area of differential
drive pinion gear contact (1) remains in the center
of the differential ring gear tooth •. 1.f the pattern
is not acceptable, proceed ,to Step
14.
12.
If the differential ring gear tooth pattern is
acceptable, remove
J
39446.
13.
Install the rear axle housing cover. Refer to Rear
Cover and Gasket Replacement.
14.
Inspect the differential ring gear teeth for a low
flank contact pattern (2).
15.
If this contact pattern (2) exists, repair the low
flank contact by decreasing the shim thickness
of the bearing on the differential drive pinion gear.
This moves the smaller diameter of the
contact (2) out toward the center line (1) of the
differential ring gear.
16.
Remove
J
39446.
17.
Install the rear axle housing cover. Refer to Rear
Cover and Gasket Replacement.
18.
Inspect the differential ring gear teeth for a heel
contact pattern (1 ).
19.
If this contact pattern
(1)
exists, repair the heel
contact by decreasing the backlash. This moves
the area of differential drive pinion gear contact (1)
toward the toe.
20. Remove
J
39446.
21.
Install the rear axle housing cover. Refer to Rear
Cover and Gasket Replacement.

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