Removal and installation the hub nut (Opel Corsa C)

1. Shift the manual transmission into neutral/move the AT selector lever to the "N" position. Apply the parking brake lever.

2. Remove the appropriate wheel.

3. On Corsa C models, use a screwdriver to remove the protective cap from the wheel hub - it will be damaged during removal and must be replaced without fail. Remove the locking pin from the hub nut.

4. The hub nut is tightened with very great force. It is recommended to install the wheels and lower the car to the ground before loosening/tightening the nut - ask an assistant to press the foot brake pedal. If this operation is carried out on a raised car, a special lever must be attached to the hub using the wheel bolts to prevent it from turning (see accompanying illustration).

Note: If necessary, the lever can be made independently.

5. Loosen the hub nut and remove it from the drive shaft journal (on the front wheels), if necessary, separate the auxiliary lever from the hub.

Note: On the rear wheels, the hub nut is installed on the axle of the hub assembly.

6. Installation is carried out in the reverse order of removal. When installing, use only new hub nuts and washers. Initially, tighten the nuts with a torque of 60 Nm, install the wheels and lower the car. Further tightening of the nut is carried out in 4 stages. In the first approach, tighten the nut with a force of 120 Nm, then loosen the nut so that its further unscrewing can be continued manually. In the third approach, tighten the nut with a force of 20 Nm, and then another 90°.

7. Secure the hub nut with a new cotter pin. If the cotter pin does not fit, back off the nut slightly until the hole for the cotter pin aligns with the nearest groove on the hub nut crown. Insert the cotter pin and spread its ends apart with pliers. On Corsa C models, do not forget to install a new protective cap.