C 1500 Yukon 2WD V8-4.8L VIN V (2000)
Carrier Bearings: Adjustments
Differential Carrier Bearing Preload Adjustment (9.5 Inch Axle)
Differential Carrier Bearing Preload Adjustment (9.5 Inch Axle)
Tools Required
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J 22779 Side Bearing Backlash Gage
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J 24429 Side Bearing Backlash Spanner
Important:
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Ensure that the side bearing surfaces in the axle housing are clean and free of burrs. If the original bearings are to be reused, the original bearing
cups must also be used.
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The drive pinion bearing preload must be within specifications before the differential side bearing preload adjustment can be performed.
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The differential side bearings must be initially preloaded in order to determine the backlash of the gear set. After the backlash is set, the final
bearing preload is set.
Caution: To prevent personal injury and/or component damage, support the differential case when removing the case from the axle housing. If the
case is not supported, the differential case could fall and cause personal injury or damage to the differential case.
1. Remove the differential assembly, if necessary.
2. Measure the rotating torque of the drive pinion bearing using an inch-pound torque wrench.
Specification: The rotating torque of the drive pinion should be 1.7-3.4 Nm (15-30 lb in) for new bearings or 1.1-2.3 Nm (10-20 lb in) for used
bearings.
3. If the rotating torque of the drive pinion is less than 1.7 Nm (15 lb in) for new bearings or 1.1 Nm (10 lb in) for used bearings, tighten the pinion
in small increments until the specified rotating torque is obtained.
4. If the rotating torque of the drive pinion is greater than 3.4 Nm (30 lb in) for new bearings or 2.3 Nm (20 lb in) for used bearings, remove the
drive pinion and replace the collapsible spacer and re-install the drive pinion. Refer to Drive Pinion Bearings Replacement.
5. Install the differential assembly, if necessary.
6. Support the differential assembly in order to prevent the differential assembly from falling out of the axle housing.
Important: Do not force the ring gear into contact with the drive pinion.
7. Slide the differential case assembly towards the right side axle housing until the ring gear contacts the drive pinion.
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This is the ZERO backlash point.
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If the ZERO backlash cannot be obtained, turn the differential bearing adjuster nut into the axle housing using the J 24429 until the ring gear fully
contacts the drive pinion to obtain the ZERO backlash.
8. While holding the ring gear against the pinion, turn the differential bearing adjuster nut out from the axle housing using the J 24429 until it
contacts the differential side bearing.
9. Turn the adjuster nut out from the axle housing an additional 2 slots using the J 24429 in order to obtain the initial backlash adjustment.
10. Install the adjuster nut lock and the adjuster nut lock bolt.
11. Remove the left side differential bearing cap bolts.
12. Remove the left side differential bearing cap.
