Pinion Installation

- Tools Required:
- J 8609-01 Rear Pinion Bearing Cone Installer
- J 22388 Pinion Oil Seal Installer
- J 8614-01 Pinion Flange Remover
- J 5590 Rear Pinion Bearing Cone Installer

INSTALL OR CONNECT
- The bearing cups should have been installed in PINION DEPTH ADJUSTMENT.

1. The pinion inner bearing (5) using J 8609-01.
- Press the bearing onto the pinion until the bearing cone seats on the pinion shims.
2. A new collapsible spacer (4).
- Lubricate the pinion bearings with axle lubricant.
3. Pinion (7) to the axle housing.
4. Outer pinion bearing (39) onto the pinion using J 5590.
- Hold the pinion forward from inside the case while driving the bearing onto the pinion.





5. Pinion oil seal (38) using J 22388.
6. Pinion flange (37) to the pinion by tapping it with a soft faced hammer until a few threads show through the pinion flange.





7. Pinion washer (36) and a new nut (35) while holding the pinion flange with J 8614-01.

Adjust
A. The nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearings. Once there is no end play in the pinion, the preload torque should be rechecked.





B. Remove J 8614-01. Check the pinion preload by rotating the pinion. Preload should be at or below 2.3 to 2.8 Nm (20 to 25 inch lbs.) on new bearings, or 1.1 to 1.7 Nm (10 to 15 inch lbs.) for used bearings.
C. If the preload torque is below the preloads given above, continue tightening the nut in small increments. Check the preload after each tightening. Each tightening increases the bearing preload. If the bearing preload is exceeded, the pinion will have to be removed and a new collapsible spacer installed.
D. Once the preload has been obtained, rotate the pinion several times to ensure the bearings have seated. Reheck the preload, and adjust if necessary.

8. Differential case.