Sodium-based grease is not compatible with lithium-based grease. Read the package labels and be careful not to mix the two types. If there is any doubt as to the type of grease used, completely clean the old grease from the bearing and hub before replacing.
Before handling the bearings, there are a few things that you should remember to do and not to do.Remember to DO the following:
The rear wheel bearings should be inspected and lubricated whenever the rear brakes are serviced or at least every 30,000 miles. Repack the bearings with high temperature multi-purpose grease.
Check the lubricant to see if it is contaminated. If it contains dirt or has a milky appearance indicating the presence of water, the bearings should be cleaned and repacked.
Clean the bearings in kerosene, mineral spirits or other suitable cleaning fluid. Do not dry them by spinning the bearings. Allow them to air dry.Front Wheel Drive Models
See Figure 1
- Raise and support the vehicle with the rear wheels off the floor.
- Remove the wheel grease cap, cotter pin, nut-lock and bearing adjusting nut.
- Remove the thrust washer and bearing.
- Remove the drum from the spindle.
- Thoroughly clean the old lubricant from the bearings and hub cavity. Inspect the bearing rollers for pitting or other signs of wear. Light discoloration is normal.
- Repack the bearings with high temperature multi-purpose EP grease and add a small amount of new grease to the hub cavity. Be sure to force the lubricant between all rollers in the bearing.
- Install the drum on the spindle after coating the polished spindle surfaces with wheel bearing lubricant.
- Install the outer bearing cone, thrust washer and adjusting nut.
- Tighten the adjusting nut to 20-25 ft. lbs. (27-34 Nm) while rotating the wheel.
- Back off the adjusting nut to completely release the preload from the bearing.
- Tighten the adjusting nut finger-tight.
- Position the nut-lock with one pair of slots in line with the cotter pin hole. Install the cotter pin.
- Clean and install the grease cap and wheel.
- Lower the vehicle.
See Figures 2, 3, 4, and 5
The rear wheel bearings used on these models is a bolt in type unit, this is the same unit that is used on the front knuckle assembly.
- Raise and support the vehicle.
- Remove the wheel and tire assembly.
- Remove the halfshaft flange retaining bolts and remove the halfshaft assembly.
- Remove the wheel bearing mounting bolts and remove the wheel bearing and hub assembly.
- Install the hub and bearing assembly, tighten the bolts to 96 ft. lbs (130 Nm) in a crisscross pattern.
Thoroughly clean the seal and wear sleeve, lubricate both before installation.
- Install the halfshaft.
- Install the washer and hub nut, with the brakes applied tighten the nut to 180 ft. lbs. (245 Nm).
- Install the spring washer, nut lock and new cotter pin.
- Install the wheel and tire assembly.