Side Bearing Preload Adjustment Procedure

^ Tools Required:
- J 3289-20 Holding Fixture Base
- J 3289-21 Holding Fixture
- J 37769 Differential Holding Fixture Adapters
- J 37760 Spanner Wrench
- J 8001 Dial Indicator Set





1. Loosen the left differential side bearing adjuster using J 37760 until it no longer makes contact with the left differential side bearing race.
2. Tighten the right differential side bearing adjuster using J 37760 until the ring gear is fully engaged with the pinion gear (0.000 backlash).

Inspect
1. The left adjuster making sure it is not making contact with the left differential side bearing race.
2. Pinion gear for binding by grasping the pinion flange and rotating the pinion gear several timers





3. Install J 8001 on the differential carrier between the center of each side bearing cap and load slightly to measure case spread.
4. Tighten the left differential side bearing adjuster using J 37760 until the adjuster makes contact with the right side bearing race.
5. Rotate J 8001 adjustable face so that the needle indicates 0.

Adjust
- Side bearing preload by tightening the left differential side bearing adjuster using J 37760 until J 8001 reads 0.0508 to 0.1524 mm (0.002 to 0.006 inch). This specification indicates the amount of case spread between the centers of both side bearing caps.