Removal & Installation
- Before servicing the vehicle, refer to the precautions at the beginning of this section.
- Place the transmission in neutral.
- Raise the vehicle on a hoist.
- Index mark the driveshaft, then disconnect driveshaft and position it out of the way.
- Disconnect driveshaft and position it out of the way.
- Remove rear wheels.
Remove rear brake calipers.
NOTEThe rear brake calipers must be removed so that there is no additional drag when measuring pinion bearing preload.
NOTERemember to index mark the driveshaft flange and pinion flange to maintain initial balance during installation.
- Use an inch lb. torque wrench and measure the amount of torque required to maintain pinion rotation through several revolutions.
- Remove the pinion flange and remove the seal.
- Install pinion seal and flange.
- Install new pinion flange nut.
- Rotate the pinion flange occasionally while tightening the flange nut to make sure the pinion bearings seat correctly.
- Take frequent bearing preload torque readings.
- If the preload recorded prior to disassembly is lower than the specification for used bearings, then tighten the pinion flange nut to specification. If the preload recorder prior to disassembly is higher than the specification for used bearings, then tighten the pinion flange nut to the original reading as recorded.
The pinion bearing preload specifications are as follows:
- Used bearings: 8-14 inch lbs. (0.9-1.5 Nm).
New bearings: 16-29 inch lbs. (1.8-3.3 Nm).
CAUTIONNever loosen the pinion nut to reduce bearing preload. If it is necessary to reduce bearing preload, install a new collapsible spacer and pinion nut.
- Connect the driveshaft and install new bolts. Tighten the bolts to 83 ft. lbs. (112 Nm).
- Install brake calipers.
- Install rear wheels.
- Fill the differential with gear lubricant and check for leaks.