REMOVAL & INSTALLATION
See Figure 1
- Raise the vehicle and support it safely on jackstands.
- Matchmark and remove the driveshaft.
- Check the turning torque of the pinion before proceeding. It should be 3.5-4.5 inch lbs. (0.4-0.5 Nm). This is the torque that must be reached during installation of the pinion nut.
- Using a suitable pinion flange holding tool, remove the pinion nut and washer.
- Remove the companion flange from the drive pinion.
- Pry the pinion seal out of the differential carrier.
- Clean and inspect the sealing surface of the housing.
- Using a seal driver, drive the new seal into the housing until the flange on the seal is flush with the carrier.
- With the seal installed, the pinion bearing preload must be set.
- Tighten the pinion nut (a new self-locking pinion nut must be used) while holding the flange, until the turning torque is the same as before removal. The final pinion nut torque must be between 137-181 ft. lbs. (190-250 Nm).
- Align the matchmarks and install the driveshaft.
- Check the level of the differential lubricant when finished.