Twelve-Point Bolt Without Ribs, Loosening and Tightening, Drive Axle to Wheel Hub

Twelve-Point Bolt without Ribs, Loosening and Tightening, Drive Axle to Wheel Hub

Special tools, testers and auxiliary items required

• Socket 24 mm (T10361)

• Digital Torque Wrench (V.A.G 1756)

Characteristics between a twelve-point bolt with ribs and a twelve-point bolt without ribs.






The contact surface - arrow A - and - arrow B - are different on the two-point bolts.

I - twelve-point bolt with ribs - arrow A -

II - twelve-point bolt without ribs - arrow B -

Vehicles without a drive axle must not be moved, otherwise the wheel bearing will be damaged. If vehicle does have to be moved, always note the following points:

- Install an outer joint in place of the drive axle.

- Tighten outer joint to 120 Nm.

Loosening the 12-Point Bolt






- With the vehicle resting on its wheels, loosen the twelve-point bolt - arrow - maximum 90° otherwise the wheel bearing will get damaged.

- Lift the vehicle just enough so that the wheels are hanging free.

- Apply the brakes (a second technician required).

- Remove 12-point bolt - arrow -.

• Before installing, clean the threads in the CV joint with a tap.

Tightening

- Replace 12-point bolt.

• Wheels must not yet touch the ground to tighten the drive axle, wheel bearing may otherwise be damaged.

- Apply the brakes (a second technician required). Tighten 12-point bolt to 200 Nm.

- Lower the vehicle onto its wheels.

- Tighten 12-point bolt an additional 180°.