Wheel Bearing Housing

Wheel Bearing Housing

Special tools, testers and auxiliary items required

• Ball joint puller (3287A)

• Torque wrench (V.A.G 1332)

• Engine/transmission jack (V.A.G 1383 A)

• Angle wrench (V.A.G 1756)

• Spreader (3424)

Removing

- Loosen drive axle bolt to wheel hub:

• Twelve-point bolt with ribs, refer to => [ Drive Axle Twelve-Point Bolt with Ribs, Loosening and Tightening ] Drive Axle Twelve-Point Bolt With Ribs, Loosening and Tightening.

• Twelve-point bolt without ribs, refer to => [ Drive Axle Twelve-Point Bolt without Ribs, Loosening and Tightening ] Drive Axle Twelve-Point Bolt Without Ribs, Loosening and Tightening.


The wheel bearing must not be under a load while the drive axle threaded connection on the wheel side is loose.

If the wheel bearings are under the load of the vehicle's own 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.

- Remove the wheel.

- Remove brake caliper and engage on body with wire.

- Remove ABS wheel speed sensor.

- Remove disc brake.

- Now remove cover plate from wheel bearing housing.

- Loosen nut of track rod ball joint, but do not unscrew yet.

• To protect thread, screw nut on pin a few turns.

- Press off track rod ball joint from wheel bearing housing using (3287A) and now unscrew nut.






- Loosen nuts - arrows -.






- Remove the control arm from the ball joint.

- Remove the drive axle outer joint from the wheel hub.

- Secure drive axle to body using wire.

- Now place (V.A.G 1383 A) under wheel bearing housing.

- Remove threaded connection of wheel bearing housing/suspension strut - arrow -.






- Insert (3424) into slot of wheel bearing housing.






- Using a ratchet and the (3424) , open the wheel bearing housing slot.

- Remove the wheel bearing housing from the suspension strut.

• If the wheel bearing housing is being replaced, then the ball joint must also be replaced. Use new nuts.

Installing

Installation is the reverse of removal, with special attention to the following:

- Tighten drive axle bolt to wheel hub:

• Twelve-point bolt with ribs, refer to => [ Drive Axle Twelve-Point Bolt with Ribs, Loosening and Tightening ] Drive Axle Twelve-Point Bolt With Ribs, Loosening and Tightening.

• Twelve-point bolt without ribs, refer to => [ Drive Axle Twelve-Point Bolt without Ribs, Loosening and Tightening ] Drive Axle Twelve-Point Bolt Without Ribs, Loosening and Tightening.


Vehicle must not rest on wheels when doing so.

With screw loosened, wheel bearing can be damaged by vehicle's own weight.

Differences Between a Twelve-Point Bolt with Ribs and a Twelve-Point Bolt without Ribs






The contact surfaces - 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 -

If a wheel bearing housing was replaced, vehicle must be aligned. Refer to => [ Wheel Alignment ] Wheel Alignment.

- Install the wheel and tighten the wheel bolts. Refer to => [ Wheel Bolt Tightening Specification ] [1][2]Specifications.

Tightening Specifications