Drive Axle Threaded Connection, Loosening And Tightening
Special tools and workshop equipment required
- Socket AF 24 mm:T10361A
- Digital Torque Wrench:VAG1756A
Do not load the wheel bearing if the wheel-side drive axle threaded connection 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. Note the following when doing so:
- Procedure for loosening the twelve-point bolt.
Vehicles without a drive axle must not be moved, otherwise the wheel bearing will be damaged. If the 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 200 Nm.
Twelve-Point Bolt, Loosening
-- With vehicle still resting on wheels, loosen the twelve-point bolt -arrow- with :T10361A maximum 90°, otherwise, the wheel bearing will be damaged.
-- Lift the vehicle just enough so that the wheels are hanging free.
-- Apply the brakes (a second technician required).
-- Remove the twelve-point bolt -arrow-.
Before installing, clean the threads in the CV joint with a thread tap.
Twelve-Point Bolt, Installing
-- Replace the twelve-point bolt.
Wheels must not yet touch the ground when tightening the drive axle or the wheel bearing can be damaged.
-- Apply the brakes (a second technician required).
-- Tighten the twelve-point bolt to 200 Nm.
-- Set the vehicle on its wheels.
-- Bolt -WHT.005.437 - / black 180° additional turn.
-- Bolt -WHT.005.437.A - / silver 90° additional turn.