Note: The double row tapered roller bearing is sealed, adjusted and filled with grease, so it does not require maintenance. Never tighten the hub nut in an attempt to "adjust" the bearing.
Examination
1. Block the front wheels and select reverse (or "P"). Jack up the rear of the car and support it on axle stands. Remove the rear wheel and release the handbrake completely.
2. To check the rear wheel bearings for wear, measure the wheel's lateral play. Position the micrometer so that its probe touches the outside of the hub. The runout should be 0 - 0.03 mm, otherwise the bearings are excessively worn and should be replaced.
Removal
Note: The bearing and its retaining ring must be replaced after each removal.
3. Remove the rear brake disc or drum (depending on the model) (see Section 9).
4. Using special pliers, remove the bearing retaining ring from the center of the brake disc or drum (see illustration).
9.4. Remove the retaining ring...
5. Support the center of the drum or disc securely. Drive or tap the bearing out of the hub using a 49mm diameter tubular drift (see illustration).
9.5. ... then drive the bearing out of the hub using a suitable tubular drift.
6. Clean the hub thoroughly, removing all traces of dirt and grease. File down any burrs or rough spots that might interfere with assembly. Inspect the hub for cracks or other damage and replace if necessary. The bearing and its retaining ring must be replaced after each removal.
Installation
7. When assembling, make sure (if possible), that the new bearing is filled with grease. Apply a thin coat of transmission oil to the bearing outer race and stub axle.
8. Support the hub securely. Press the bearing into working position using a tube (diameter 51 mm), resting only on the outer ring of the bearing.
9. Make sure the bearing is pressed against the hub flange and secure it with a new snap ring. Make sure the ring fits into the groove.
10. Install the brake disc or drum (see Section 9).