See Figures 1 and 2
- Loosen the rear wheel lug nuts.
- Raise the car and support it securely. Remove the wheel(s).
- On rear disc brake-equipped vehicles, remove the caliper and rotor. Support the caliper out of the way with strong wire or cord. Do not allow the caliper to hang by the hydraulic hose. For more details, refer to the rear disc brake caliper removal procedure in Brakes .
- Remove the grease cap, cotter pin, nut lock, retaining nut and outer wheel bearing.
- Carefully pull the brake drum and outer bearing off the spindle. Do not drag the inner bearing or grease seal over the stub axle (the thread bearing and oil seal may be damaged.) Using an appropriate tool, remove the grease seal and inner bearing from the drum or hub. Discard the old grease seal-a new seal should be used when reinstalling the inner bearing.
Thoroughly clean all old grease from the outer and inner bearings, bearing cups and hub cavity.
- To clean the bearings, soak them in an appropriate cleaning solvent.
- Strike the flat surface of the bearing inner race against a hardwood block several times.
- Immerse the bearings in solvent between the blows to jar grease loose and wash old particles of hardened grease from the bearings.
- Repeat this procedure until the bearings are clean.
- Bearings can be dried using compressed air, but do not spin the bearings.
- After cleaning, oil the bearings with engine oil.
Check the old bearings for damage as follows:
- Insert the previously oiled bearing into its appropriate cup, apply pressure to the bearing while rotating it to test them for pitting and roughness.
- Replace all worn or defective bearings with new ones.
- If the bearings show signs of pitting or roughness, they should be replaced.
- Bearings must be replaced as a set; both the cup and the bearing need to be replaced at the same time.
- If the used bearings are suitable for further use, remove the engine oil from the bearings using an appropriate solvent, then dry the bearings.
- To repack the bearings, use a Multi-Purpose NLGI Grade 2 EP Grease such as Mopar® or equivalent. Place the bearings in a clean covered container until ready for installation. If a bearing packer is not available, hand pack the grease into all cavities between the cage and rollers. Make sure to completely fill the bearings with grease (when hand packing the bearings, you can never have too much grease packed into it).
- If the bearings and cups are to be replaced, remove the cups from the drum or hub using a brass drift or suitable removal tool.
- Install the new bearing cups with the an appropriate bearing cup installation tool.
- Install the inner bearing in the grease coated hub and bearing cup, then install new grease seals (inner and outer) using an appropriate seal installation tool.
- Coat the hub cavity and cup with grease.
- Before installing the hub or drum assembly, inspect the stub axle and seal surface for burrs or roughness. Smooth out all rough surfaces with emery paper.
- Coat the stub axle with the bearing grease.
- Carefully slide the hub or the drum assembly over the stub axle.
Do not drag the seal or inner bearing over the threaded area of the stub axle.
- Install the outer bearing, thrust washer and nut.
- Tighten the wheel bearing adjusting nut to 20-25 ft. lbs. (27-34 Nm) while rotating the hub or drum assembly. This seats the bearings.
- Back off the adjusting nut 1 / 4 turn (90°), then tighten the adjusting nut only finger-tight.
- Position the nut lock over the bearing adjusting nut with one pair of slots in line with the cotter pin hole in the stub axle, and install a new cotter pin.
- Install the grease caps.
- Install the wheels and tighten the lug nuts until snug.
- Lower the vehicle to the ground.
- Tighten the lug nuts to 95 ft. lbs. (129 Nm).
The rear wheel bearings and hubs are replaced as assemblies only. They are non-adjustable. The maximum allowable bearing end-play is 0.001 in. (0.025mm). If the end-play exceeds this, the bearing/hub assembly should be replaced with a new one.
- Loosen the rear wheel lug nuts.
- Raise and safely support the rear of the vehicle on jackstands.
- Remove the wheel(s).
- Remove the brake drum from the axle shaft hub. For more details, refer to Brakes .
- Remove the axle shaft hub nut and remove the hub/bearing assembly.
- Lightly oil the axle shaft before installing the hub/bearing assembly.
- Slide the hub onto the axle shaft and secure with a new nut. Tighten the nut to 123 ft. lbs. (167 Nm).
- Install the brake drum onto the axle shaft.
- Install the wheel(s) and tighten the lug nuts until snug.
- Lower the vehicle until some of its weight is resting on the rear tires, then tighten the lug nuts to 63 ft. lbs. (85 Nm) on steel wheels and to 90 ft. lbs. (122 Nm) for aluminum wheels.
- Lower the vehicle completely to the ground.