Tools Required

1. Place the required amount of shims in the inner bearing bore. Include the baffle, if used.
2. Drive the inner bearing cup into the axle assembly using the J 39708 and J 39707 . Make sure the cup is seated on the shims.



3. Install the inner bearing cone on the pinion. Drive the inner bearing cone onto the pinion shaft using the J 5590 .
4. Apply a light coat of axle lubricant to the lip of the pinion seal.
5. Install the outer bearing cone, slinger, and oil seal using the J 41689.
6. Install the preload shims onto the pinion gear.
7. Install the pinion into the axle housing.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

8. Install the washer and new pinion nut.

Tighten
Tighten the pinion nut to 637 N·m (470 lb ft) while holding the pinion with the J 8614-01 .

9. Tighten the nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut in order to seat the bearings.
10. Once there is no end play, check the preload torque.
11. Remove the J 8614-01 .




Important: The pinion preload should be at or below 4 N·m (35 lb in) on new bearings, or 1.2 N·m (10 lb in) on old bearings.

12. Check the pinion preload by rotating the pinion with a torque wrench.
13. Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times.
14. Recheck the pinion preload. Adjust the pinion preload as necessary.