Seal - Pinion
Rear Axle - 286RBI / PINION SEALREMOVAL
1. Raise and support the vehicle.
2. Mark the universal joint, pinion yoke, and pinion shaft for installation reference.
3. Disconnect the propeller shaft from the pinion yoke. Secure the propeller shaft in an upright position to prevent damage to the rear universal joint.
4. Remove wheel and tire assemblies.
5. Remove brake calipers to prevent any drag. The drag may cause a false bearing preload torque measurement.
6. Rotate pinion yoke three or four times.
7. Record the amount of torque necessary to rotate the pinion gear with an inch pound dial-type torque wrench.
8. Hold the yoke with Holder 6719A and remove the pinion shaft nut and washer.
9. Remove yoke from the pinion with Remover C-452 (Fig. 22).
10. Remove pinion shaft seal with suitable pry tool or slide-hammer mounted screw.
INSTALLATION
1. Clean the seal contact surface in the housing bore.
2. Apply a light coating of gear lubricant on the lip of pinion seal.
3. Install new pinion shaft seal with an appropriate Installer.
4. Position pinion yoke on the end of the shaft with the reference marks aligned.
5. Install the yoke with Installer D-l91 and Yoke Holder 6719A (Fig. 23).
6. Install the pinion yoke washer and nut.
7. Hold pinion yoke with Yoke Holder 6719A and tighten shaft nut to 597 Nm (440 ft. lbs.) (Fig. 24). Rotate pinion shaft several revolutions to ensure the bearing rollers are seated.
8. Rotate pinion shaft using an inch pound torque wrench. Rotating resistance torque should be equal to the reading recorded, plus a small amount for the drag the new seal will have (Fig. 25).
NOTE: The bearing rotating torque should be constant during a complete revolution of the pinion. If the rotating torque varies, this indicates a binding condition.
9. Install propeller shaft with the installation reference marks aligned.
10. Install the brake calipers.
11. Add gear lubricant to the differential housing, if necessary.
12. Install wheel and tire assemblies and lower the vehicle.