Backlash Adjustment

^ Tools Required
- J 37760 Spanner Wrench
- J 8001 Dial Indicator Set





1. Install the J 8001 to the differential carrier with the dial indicator plunger against a ring gear tooth.
2. Hold the pinion gear stationary.
3. Move the ring gear (1) back and forth as far as it will travel without turning the pinion gear.
4. Observe the J 8001 while moving the ring gear back and forth as previously described. Differential backlash should be within 0.0203 to 0.381 mm (0.008 to 0.015 inch).
5. If the differential backlash is above the specification, adhere to the following directions:
^ Loosen the right side bearing adjuster approximately 1/4 turn.
^ Tighten the left side bearing adjuster approximately 1/4 turn using the J 37760.
This procedure moves the ring gear close to the pinion gear in order to cause a tighter mesh and less backlash.

IMPORTANT: In order to preserve the differential side bearing preload, any time a side bearing adjuster is loosened, the other adjuster MUST be tightened the same amount. The last motion of this adjustment must be in a tightening direction.

6. If the differential backlash is below the specification, adhere to the following specifications:
^ Loosen the left side bearing adjuster approximately 1/4 turn.
^ Tighten the right side bearing adjuster approximately 1/4 turn using the J 37760.
This procedure moves the ring gear away from the pinion gear in order to cause a looser mesh and more backlash.

7. Continue with the adjustment of specifications until the most accurate differential backlash is obtained.
^ Tighten the differential side bearing cap bolts to 100 Nm (72 ft. lbs.).

NOTICE: Refer to Fastener Notice in Service Precautions.

8. Install both side bearing lock plates; secure with two bolts.
^ Tighten both of the side bearing lock plate bolts to 33 Nm (25 ft. lbs.).