Pinion Depth Setting Procedure

^ Tools Required:
- J 8001 Dial Indicator Set*
- J 23597-1 Arbor*
- J 23597-12 Pilot Washer*
- J 21777-42 Pilot Washer*
- J 21777-43 Stud Assembly*
- J 21777-101 Side Bearing Discs*
- J 21777-102 Gage Plate*
* Included in J 21777-B Pinion Setting Gage Kit

1. Lubricate both inner and outer pinion bearings with wheel bearing lubricant.











2. Place both inner and outer pinion bearings into the differential carrier and install a J 21777-102, a J 23597-12, a J 21777-43 and J 21777-42.





3. Hold the J 21777-43 stationary and tighten the jam nut to 2 Nm (18 inch lbs.).
4. Rotate the J 21777-102 25 revolutions to make sure the pinion bearings are fully seated.
5. Retighten the jam nut to 2 Nm (18 inch lbs.).





6. Install the J 21717- 101 in the side bearing bores with J 23597-1 through both side bearing discs.
7. Rotate the J 21777-102 until both gaging levels are parallel with the J 21777-101.





8. Install the dial indicator spring loaded plunger extension through the J 23597-1 and position over the 97 mm level of the J 21777-102.








9. Install a J 8001 to the J 23597-1 and position the gage plunger over the plunger extension and slightly load the indicator.
10. Rotate the J 8001 adjustable face so that 0 is aligned with the dial indicator needle.
11. Slowly rotate the J 23597-1 back and forth so that the spring loaded plunger extension sweeps back and forth across the 97 mm level of the J 21777-102 while observing the dial indicator.
12. Stop the J 23597-1 at the dial indicator's greatest point of deflection.
13. Without disturbing the J 8001 needle setting, rotate the J 8001 adjustable face so that 0 is aligned with the dial indicator needle.
14. Slowly rotate the J 23597-1 one way until the spring loaded plunger extension is no longer making contact with the J 21777-102.
15. Record the deflection reading on the J 8001.





16. This reading indicates the selective shim size required for the correct pinion depth.
17. Remove the J 8001 and spring loaded plunger extension from the J 23597-1.
18. Remove the J 23597-1 and the two J 21777-101 from the differential.
19. Remove the J 21777-102, the J 23597-12, the J 21777-43 and the J 21777-42 from the differential carrier.
20. Remove both inner and outer pinion bearings from the differential carrier.