Replacing wheel bearing housing — AUDI

Wheel bearing housing
With 75 mm diameter bearing bore for vehicles with engines up to 101 kW
With 82 mm diameter bearing bore for vehicles with engines from 110 kW
Do not grease bearing seat in wheel bearing housing before pressing in wheel bearing
Never widen slot in wheel bearing housing (seat for joint pin) to press out joint pin
Perform front axle wheel alignment after removing/installing or replacing wheel bearing housing
Note different types of wheel bearing housing => Fig.
11

Plug
Vehicles with ABS feature a spring sleeve for the wheel speed sensor instead of the plug

Hexagon bolt, 10 Nm
Brake cover plate

Note:

Vehicles with cast and forged wheel bearing housings have different cover plates.

Wheel bearing
With 75 mm diameter for vehicles with engines up to 101 kW
With 82 mm diameter for vehicles with engines from 110 kW
Stepped internal diameter
Note correct installation position: Large internal diameter of wheel bearing points to wheel hub.
Pressing out destroys the bearing
Pressing out ø 75 => Fig.
3
Pressing in ø75=>Fig.
4
Pressing out ø 82 => Fig.
5
Pressing in ø82 =>Fig.
6

Wheel hub
Note different versions: 33 teeth up to 101 kW engine, 38 teeth as of 110 kW engine
Pressing out ø75=>Fig.
1
Pressing out ø82 =>Fig.
2
Pressing in ø75 =>Fig.
7
Pressing in ø82 =>Fig.
8
Pulling off bearing inner race =>Fig.
9
and
10

Fig.1
Pressing wheel hub out of 75 mm diameter wheel bearing

Fig.2
Pressing wheel hub out of 82 mm diameter wheel bearing

Fig.3
Pressing out 75 mm diameter wheel bearing

Fig.4
Pressing home 75 mm diameter wheel bearing -A-

Note:

Large internal diameter of wheel bearing points to wheel hub.

Fig.5
Pressing out 82 mm diameter wheel bearing

Fig.6
Pressing home 82 mm diameter wheel bearing -A-

Note:

Large internal diameter of wheel bearing points to wheel hub.

Fig.7
Pressing wheel hub into 75 mm diameter wheel bearing

When pressing in, thrust piece -VW519- must only make contact with inner race.

Fig.8
Pressing wheel hub into 82 mm diameter wheel bearing

When pressing in, thrust piece -VW455- must only make contact with the bearing inner race.

Fig.9
Inserting separating device

Insert separating device into annular groove of bearing inner race and pre-tension with spindle.

Note:

Use commercially available separating device e.g. 15-17 from Kukko.

Fig.10
Pressing bearing inner race off wheel hub

Fig.11
Forged and cast wheel bearing housings

A = Forged version
B = Cast version

Note:

Forged wheel bearing housings are installed with 75 and 82 mm bearing diameter. Cast versions are only fitted with 75 mm bearing diameter. From a technical point of view there are no reservations about installing different types of wheel bearing housing on the same axle.

Attention
If cast wheel bearing housings are fitted when performing repairs, then the modified cover plates and the corresponding ball joints should also be installed.
Part no. 8A0 407 365 - left
Part no. 8A0 407.366 - right