Drive Axle Bolt, Loosening And Tightening
Special tools and workshop equipment required
- Socket AF 24 mm: T10361A
- Digital Torque Wrench: VAG1756A
The wheel bearing must not be under load when the drive axle threaded connection on the wheel side is loose.
If the wheel bearings are under the load of the vehicle weight, the wheel bearing will be damaged. This reduces the service life of the wheel bearings.
The drive axle bolt may be loosened maximum 90° when the vehicle is standing on its wheels.
Vehicles without a drive axle must not be moved, otherwise the wheel bearing will be damaged. If a vehicle must be moved, be sure to note the following:
- Install an outer joint in place of the drive axle.
- Tighten the outer joint to 120 Nm.
Twelve-Point Bolt, Loosening
-- With vehicle still resting on wheels, loosen the twelve-point bolt with : T10361A maximum 90°, otherwise, wheel bearing will be damaged.
-- Lift the vehicle just enough so that the wheels are hanging free.
-- Press the brake pedal. A second technician will be needed.
-- Remove the twelve-point bolt -arrow-.
Twelve-Point Bolt, Installing
-- Replace the twelve-point bolt.
The wheels must not be touching the ground when tightening the drive axle. Otherwise, wheel bearing may be pre-damaged.
-- Press the brake pedal. A second technician will be needed.
-- Tighten the twelve-point bolt to 200 Nm.
-- Set the vehicle on its wheels.
-- Turn the twelve-point bolt an additional 180°.