Tools Required

1. Install the mount differential carrier into theJ 3289-21 with the J 37769 .



2. Place the differential carrier and the holding fixture into the J 3289-20 .
3. Inscribe alignment marks on the differential side bearing caps to ensure proper assembly.



4. Remove the two bolts (1) and the side bearing lock plates (2) from the side bearing caps.



5. Remove the four bolts (2) and the side bearing caps (1) from the differential carrier.



6. Remove the side bearing adjusters (6) and the bearing races (3) from the differential carrier.
7. Remove the differential ring gear and the case from the differential carrier.
8. Turn the differential carrier and the holding fixture over so that the piston flange nut is horizontal (90 degrees).
9. Remove one bolt and rear wheel speed sensor (if equipped).



10. Unstake the pinion flange (1) nut.



11. Remove the pinion flange nut (1) from the pinion gear using the J 8614-01 to hold the pinion flange stationary.



12. Remove the pinion gear (1) from the differential carrier.



13. Remove the pinion seal (1) from the differential carrier using the J 26941 with the J 23907 .



14. Remove the outer pinion bearing (1) from the differential carrier.



15. Remove the inner pinion bearing races (1) from the differential carrier using a large drift punch and a hammer. Tap around the rear of each bearing race and slowly drive each race out evenly.



16. Remove the outer pinion bearing races (1) from the differential carrier using a large drift punch and a hammer. Tap around the rear of each bearing race and slowly drive each race out evenly.



17. Remove the side bearings (1) from the differential case using the J 22888-D with the J 8107-4 .



18. Remove the ten bolts and the ring gear (1) from the differential case (2).
19. Separate the right and left differential case halves.
20. Remove the speed sensor exciter ring from the left case using a copper hammer.
21. Tap gently around the outer edge of the exciter ring until the exciter ring is free of the left differential case half.



22. Remove three roll pins (1) from the right differential case using a hammer and a standard drift punch.
23. Disassemble the following parts:

•	The side gears and washers

•	The differential pinion gears and washers

•	The cross shafts

•	The pinion cross shaft joint




24. Remove the inner pinion bearing (2) and the collapsible spacer from the pinion gear shaft using the J 22912-O1 . Place the J 22912-O1 on the pinion gear shaft with the concave side toward the pinion gear. Then place the pinion gear (3) in a hydraulic press (1) and remove the inner pinion bearing.
25. Remove the pinion selective shim from the pinion gear shaft.

Important:  If compressed air is used to dry the parts, do not spin dry the roller bearings with compressed air or bearing damage may result.

26. Clean all parts thoroughly with clean solvent and air dry.



27. Inspect the differential carrier (1) and case for cracks or stripped threads and repair or replace as necessary.




Important: Differential components are set to very close tolerances and are prone to wear should one component fail. In order to ensure accurate adjustment and even wear, the ring and pinion gears as well as all tapered roller bearings and races must be replaced as sets.

28. Inspect the ring (2) and pinion (1) gears for excessive or unusual wear, cracks, overheating or other damage and replace as necessary.
29. Inspect all roller bearings and races for roughness, locking, or other wear or damage. Replace defective parts as necessary.
30. Inspect the side and differential pinion gears for unusual wear or damage. Replace defective parts as necessary.