Front wheel drive cars
1. Jack up the rear of the vehicle.
2. Remove the hub nut cap using a chisel. Move the chisel around the cap several times. Deformation of the cap is not allowed.
3. Remove the cotter pin and slotted lock washer (see illustration).
10.3 Rear hub bearing and adjacent components
1 - hub neck
2 - protective cover (disc brake mechanism)
3 - sealing ring
4 - inner bearing
5 - outer ring of the inner bearing
6 - ABS speed sensor gear
7 - hub (disc brake mechanism)
8 - inner ring of outer bearing
9 - outer bearing
10 - thrust washer
11 - hub nut
12 - slotted lock washer
13 - split pin
14 - protective cap
4. Press the adjusting wedge upward to release the brake drum.
5. Tighten the hex hub nut. Do this very carefully. Turn the wheel while doing this to avoid jamming the bearing.
6. Loosen the hub nut. The hub bearing play is considered to be set correctly if the thrust washer under the nut can be moved by pressing on it with a screwdriver. However, do not rest the screwdriver on the brake drum protrusion (see illustration). If the split pin does not fit into the hole on the lock washer after adjusting the play, the nut can be tightened a little.
7. Install the hub nut protective cap into place by tapping it with a rubber mallet. It is recommended to place a rag on the cap to avoid damaging it.
In quattro models, the hub bearings are pressed in and do not require adjustment. Replacing them yourself is also not possible.