Wheel Bearing Unit, Removing and Installing

Wheel bearing unit, removing and installing

Special tools, testers and auxiliary items required





^ Torque wrench V.A.G. 1331





^ Torque wrench V.A.G. 1332





^ Torque wrench V.A.G. 1576





^ CV joint boot clamp tool T40067

Removing

Applies to vehicles with air spring suspension
- Position vehicle on lifting platform.

Applies to all vehicles
- Remove decorative wheel cover, for light-alloy wheels pull off protective cap (use pulling hook in vehicle tool kit).
- Loosen collar bolt for outer joint of drive axle (only loosen when vehicle is standing on its wheels danger of accident-).
- Remove noise insulation.
- Remove brake caliper and secure to body so that the weight of the brake caliper does not stress or damage brake hose or brake line.





- Remove bolt - 5 - for ABS wheel speed sensor.
- Unclip ABS cable at wheel bearing housing.
- Remove brake disc.





- Remove drive axle - 1 - from flange shaft/transmission.





- Disconnect threaded connection - 1 - and pull out both links - 2 - upward.

Slits in wheel bearing housing may not be widened with a chisel or similar tool!
- Swing away wheel bearing housing toward side while pulling drive axle end out of wheel hub.
- Remove drive axle.





- Insert both joint stubs of upper links - 2 - in wheel bearing housing and only insert bolt - 1 -.

Note:
^ This work step is necessary to prevent damage to parts of suspension when loosening and tightening the countersunk bolts.





- Remove countersunk bolts - 1 -.
- Remove wheel bearing unit.
- Service wheel bearing unit.

Installing
Installation is in reverse order of removal. Note:





- Insert both linkage stubs of upper links in wheel bearing housing and tension downward as far as possible using pliers T40067.





- Insert new bolt - 2 - and self-locking nut and tighten.

- Install wheel.
- For vehicles with air spring suspension, set vehicle on its wheels.
- Tighten wheel.