Loosening and tightening of the hub bolt with a twelve-sided head

After loosening the wheel bolt, the load on the wheel bearings must be eliminated. Otherwise, the bearing may be damaged by the vehicle's weight, resulting in a shortened bearing life. Therefore, it is necessary to proceed as follows. Procedure for loosening a hex head bolt. It is forbidden to move vehicles without installed drive shafts, because. in this case, the wheel bearing is damaged. If, however, the vehicle must be moved, the following procedure must be followed. Install an outer CV joint instead of the drive shaft. Tighten wheel bolt to 120 Nm.

Unscrewing the dodecagonal head bolt

If the vehicle is on wheels, the hex head bolt can be loosened up to a maximum of 90°, otherwise the wheel bearing may be damaged. Use socket wrench 24 mm -T10361-. Raise the car so that the wheels hang out. Press the brake pedal. Remove hexagon bolt -arrow-.

Tightening hex bolt

Use a new hex head bolt.

Instruction: Before tightening the hub bolts, the wheels must not touch the floor; otherwise, the hub bearing may be damaged.

Press the brake pedal. Tighten hexagon bolt to 70 Nm. Lower the car onto wheels. Tighten the hex head bolt another 90°.