Rear Wheel Bearing (SOHC Models) — Adjustment (Opel Vectra A)

Note: After completing the adjustment, secure the hub nut with a new cotter pin.

1. Where applicable, remove the hubcap, then loosen the rear wheel bolts. Block the front wheels, then jack up and support the rear of the vehicle on axle stands. Remove the wheel.

2. Remove the hub dust cap using a screwdriver as a lever (see illustration).



3. Remove the cotter pin from the end of the steering knuckle, then loosen the hub nut.

4. Tighten the hub nut to a torque of 25 Nm while rotating the hub.

5. Gradually loosen the hub nut until the washer under the nut can be moved with a screwdriver (do not use a screwdriver as a lever) (see illustration).



6. If the cotter pin hole in the stub axle does not align with the slots in the hub nut, turn the nut until its nearest slot aligns with the hole. Then check that the washer can still move as described in step 5. If the washer does not move, loosen the nut until its adjacent slots align with the cotter pin hole.



7. Secure the hub nut using a new cotter pin, then install the hub dust cap.

8. Install the wheel and lower the vehicle to the ground. Tighten the wheel bolts completely and, where applicable, install the hubcap.