Backlash Inspection and Adjustment

Backlash Inspection and Adjustment

^ Tools Required
- J 42213 Adjuster Sleeve Socket
- J 45224 Side Bearing Adjuster
- J 8001 Dial Indicator Set





1. Install the J 45224 to the right differential adjuster.
2. Slowly turn the J 45224 clockwise until the right differential adjuster contacts the differential case bearing.
3. Install the J 42213 to the left differential adjuster.
4. Slowly turn the J 42213 clockwise until the left differential adjuster contacts the differential case bearing.
5. Mark the location of the adjusters in relation to the carrier halves. Ensure that the notches in the differential adjusters can be counted when turned.
6. Using the J 45224, turn the right differential adjuster out two notches.
7. Using the J 42213, turn the left differential adjuster in one notch.
8. Rotate the pinion several times in order to seat the bearings.


Measuring Backlash





1. Install the J 8001 (1-4) so that the button contacts the outer edge of the pinion yoke.
Ensure that the plunger is at a right angle to the pinion yoke.
2. Move the pinion yoke back and forth through the pinion yoke's free play while not allowing the ring gear to move.
3. Record the dial indicator reading.
4. To determine the actual backlash, divide the dial indicator reading by 2.
An actual dial indicator reading of 0.16 mm (0.006 inch) means that there is actually 0.08 mm (0.003 inch) backlash.
^ The backlash between the ring gear and the drive pinion should be between 0.08 - 0.25 mm (0.003 - 0.010 inch) with a preferred specification of 0.13 - 0.18 mm (0.005 - 0.007 inch).

Important: When adjusting the backlash, observe the following:
^ Always turn the left and the right differential adjusters in equal amounts.
^ Turning the differential adjusters in or out one notch will change the backlash about 0.08 mm (0.003 inch).
^ Once the proper backlash is obtained, turn the left differential adjuster in one additional notch in order to preload the differential case side bearings.

5. If the backlash is too small, use the following procedure to adjust:
5.1. Increase the backlash by turning the left differential adjuster in one notch and the right differential adjuster out one notch.
5.2. Recheck the backlash and adjust as necessary.
6. If the backlash is too large, use the following procedure to adjust:
6.1. Decrease the backlash by turning the right differential adjuster in one notch and the led differential adjuster out one notch.
6.2. Recheck the backlash and adjust as necessary.
7. Once the proper backlash is obtained, turn the left differential adjuster in one additional notch using the J 42213 in order to preload the differential case side bearings.
8. Recheck the backlash and adjust as necessary.