Pinion Flange: Service and Repair

Drive Pinion Yoke Replacement

Removal Procedure

Tools Required
J 8614-01 Companion Flange Holder

1. Raise and support the vehicle.
2. Remove the rear wheels.
3. Remove the drums, if equipped.
4. Remove the rear rotors, if equipped.




5. Remove the propeller shaft.
6. Measure the amount of torque required in order to turn the pinion. Use an inch-pound torque wrench. Record this measurement for reassembly. This will provide the combined preload for the following components:
- The pinion bearing
- The seal
- The carrier bearing
- The axle bearing
- The seal
7. Draw an alignment mark on the following components:
- The pinion stem
- The pinion flange
- The pinion flange nut
8. Record the number of exposed threads on the pinion stem for reference.




9. Remove the pinion flange nut and washer. Hold the pinion flange using a J 8614-01.




10. Remove the pinion flange using the J 8614-01. Use a container in order to retrieve the lubricant.

Installation Procedure

Tools Required
J 8614-01 Companion Flange Holder




1. Apply a seal lubricant to the outside of the pinion flange.

Important: Do not hammer the pinion flange onto the pinion stem.

2. Install the pinion flange.




3. Install the washer and a new nut.
Tighten
Tighten the nut on the pinion stem as close to the original marks as possible without turning the nut past the mark. Use the reference mark and the thread count as a reference. Tighten the nut slightly. Turn the pinion flange several times after each tightening in order to set the rollers.




Important: If the original preload torque value was less than 0.34 N.m (3 lb in), reset the torque specification to 0.34 - 0.56 N.m (3 - 5 lb in).

4. Measure the torque required to rotate the pinion, using an inch-pound torque wrench. Compare this value with the rotating torque recorded earlier. Continue to tighten and measure until you obtain the same preload.
5. Install the propeller shaft.
6. Install the rear rotors, if equipped.
7. Install the drums, if equipped.
8. Install the rear wheels.
9. Replenish the rear axle with new lubricant as needed.
10. Lower the vehicle.