Procedures

Drive Axle Twelve-Point Bolt, Loosening and Tightening

Special tools, testers and auxiliary items required

• Socket AF 24 (T10361)

• Angle wrench (V.A.G 1756)

Wheel bearing must not be burdened while drive axle threaded connection on the wheel side is loose.

If the bearings are loaded by the vehicle's own weight the wheel bearing will be damaged. The wheel bearings will be stressed and the life expectancy reduced. Therefore, observe the following:

• Procedure for loosening 12-point bolt.

Vehicles without drive axle must not be moved, otherwise wheel bearing will be damaged. If vehicle must be moved, observe the following:

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

- Tighten outer joint to 120 Nm.

Loosening

- With vehicle still resting on wheels, loosen 12-point bolt with (T10361) maximum 90°, otherwise, wheel bearing will be damaged.

- Raise vehicle enough that wheels hang freely.

- Operate brake (second mechanic required).

- Remove 12-point bolt - arrow -.





Fastening

- Replace 12-point bolt.

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

- Operate brake (second mechanic required).

- Tighten 12-point bolt to 70 Nm.

- Lower vehicle onto its wheels.

- Tighten 12-point bolt an additional 90°.