Drive Axle Threaded Connection, Loosening And Tightening

Special tools and workshop equipment required

Torque Wrench 80-400Nm: VAG1576
19 mm inner hex socket, commercially available

Loosen the Threaded Connection Between the Drive Axle/Stub Axle and Wheel Hub

Fig 1: Drive Axle Hex Bolt

Courtesy of AUDI OF AMERICA, LLC

-- With vehicle still resting on its wheels, loosen the bolt -arrow- a maximum of 90° using the 19 mm inner hex socket, otherwise the wheel bearing will be damaged.

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

-- Press the brake pedal (a second person is needed).

-- Remove the bolt.

Tighten the Threaded Connection Between the Drive Axle/Stub Axle and Wheel Hub

Replace bolt after removal.
Before installing, clean the threads in the CV joint/stub axle with a thread tap.
The wheels must not be touching the ground when tightening the drive axle/axle stub. Otherwise, wheel bearing may be pre-damaged.

-- Press the brake pedal (a second person is needed).

-- Tighten the bolt to 200 Nm.

-- Set the vehicle on its wheels.

-- Tighten the bolt an additional 180°.