Part-Time (4WD) Front Drive Axle

- Tools Required:
- J 33792 Side Bearing Adjuster Wrench
- J 8001 Dial Indicator Set
- J 34047 Gear Lash Gauge
- J 25025-1 Dial Indicator Stand

ADJUST





1. Tighten the right sleeve to 140 Nm (103 ft. lbs.) using J 33792.
2. Tighten the left sleeve to 140 Nm (103 ft. lbs.) using J 42213.





3. Mark the location of the adjusting sleeves in relation to the carrier halves (number 1 in the figure) so the notches in the adjusting sleeves can be counted when turned.
4. Turn the right adjusting sleeve OUT two notches using J 33792.
5. Turn the left adjusting sleeve IN one notch using J 42213.
6. Rotate the pinion several times to seat the bearings.
7. Install a dial indicator so the button contacts the outer edge of the pinion flange. The plunger must be at a right angle to the pinion flange.
8. Move the pinion flange through its free play while holding the differential carrier. Record the dial indicator reading.
9. Divide the dial indicator reading by 2 to obtain the actual backlash.
- EXAMPLE: A dial indicator reading of 0.16 mm (0.006 inch) means that there is actually 0.08 mm (0.003 inch) backlash.
10. Check and record the backlash at three or four points around the ring gear.
- If the backlash varies more than 0.05 mm (0.002 inch), check for burrs, a distorted case flange, uneven bolting conditions, or foreign matter between the case and the ring gear.
- Gear backlash should be between 0.08 to 0.25 mm (0.003 to 0.010 inch) with a preferred specification of 0.013 to 0.018 mm (0.005 to 0.007 inch).
- If the backlash is incorrect, adjust the sleeves as necessary. Always maintain one notch preload on the side bearings.
- EXAMPLE: If it is necessary to turn the right sleeve IN one notch, the left sleeve must be turned OUT one notch.
- To increase backlash, turn the left sleeve in, and the right sleeve out, an identical amount. To decrease backlash, turn the right sleeve in, and the left sleeve out, an identical amount.
11. When the backlash is correct, mark the position of the sleeves so they can be kept in the same location.