Removal & Installation
- Before servicing the vehicle, refer to the -Precautions- section.
- Drain the axle housing fluid.
Remove or disconnect the following:
NOTEMatchmark the driveshaft flange and rear axle pinion flange to maintain initial balance during installation.
Rear wheel and tire assemblies
- Disconnect and position the driveshaft out of the way.
- Install an inch/pound torque wrench on the nut and record the torque necessary to maintain rotation of the drive pinion gear through several revolutions.
Remove and discard the pinion flange nut.
NOTEMatchmark the rear axle pinion flange and drive pinion gear stem to maintain initial balance during installation.
- Remove the rear axle pinion flange.
- Force up on the metal flange of the rear axle drive pinion seal. Install gripping pliers and strike with a hammer until the rear axle drive pinion seal is removed.
Lubricate the new rear drive pinion seal with grease.
NOTEIf the rear axle drive pinion seal becomes misaligned during installation, remove the rear axle drive pinion seal and install a new seal.
- Drive in the rear axle drive pinion seal.
- Inspect the rear axle pinion flange seal journal for rust, nicks and scratches prior to installing the flange. Polish the seal journal with fine crocus cloth, if necessary.
- Lubricate the rear axle pinion flange splines.
Install the rear axle pinion flange, aligning the matchmarks made during disassembly.
NOTEDisregard the index marks if installing a new pinion flange.
WARNINGDo not under any circumstance loosen the nut to reduce preload. If it is necessary to reduce preload, install a new differential drive pinion collapsible spacer and nut.
Rotate the pinion occasionally to make sure the pinion bearings seat correctly. Take frequent pinion bearing torque preload readings by rotating the drive pinion gear with an inch/pound torque wrench.
NOTERotational torque must be at least the recorded original torque plus a maximum of 5 inch-pounds.
- If the preload recorded prior to disassembly is lower than the specification for used bearings, then tighten the nut to specification. If the preload recorded prior to disassembly is higher than the specification for used bearings, then tighten the nut to the original reading as recorded.
Pinion bearing preload: 16-29 inch lbs. (1.8-3.2 Nm).
- Connect the driveshaft. Torque the bolts to 83 ft. lbs. (112 Nm).
- Install the rear brake calipers. Torque the bolts to 24 ft. lbs. (32 Nm).
- Install the rear wheel and tire assemblies.