Remove the two brake caliper mounting bolts (see fig. 8.9). At the same time, use a thin wrench to hold the guide pin from turning
Remove the brake pads.
Remove the brake disc.
Remove the holder and take out the speed sensor.
Using a wrench through the holes in the hub, unscrew the five bolts securing the rear wheel bearing/hub (see fig. 8.10).
Remove the rear wheel bearing/hub and sheet metal cover.
Installation
Install the rear wheel bearing/hub and secure it with bolts, tightening them to a torque of 60 Nm.
Replace and install the speed sensors if necessary. Install the brake disc. Install the brake pads. Install the brake caliper and secure it with new self-locking bolts, while holding the guide pin from turning.
Fig. 8.8. Rear wheel bearing/hub fastening elements on front-wheel drive vehicles
1 - self-locking bolt, 35 Nm,
A new bolt must be used during installation.
2 - rear brake caliper,
3 - Allen head bolts, 60 Nm,
4 - brake disc,
5 - Allen head bolts, 60 Nm,
6 - rear wheel bearing/hub,
The rear wheel bearing/hub together form a single unit. In this case, no rear wheel bearing adjustment is required.
7 - sheet material casing,
8 - rear beam,
9 - rear wheel speed sensor,
The sensor must be replaced when installing a new bearing. The sensor is installed until it stops. Note that during installation, the positioning protrusion on the left side was facing forward, and on the right side, it was facing backward.
10 - rear wheel speed sensor retainer.
(The article was copied from the website: «AudiManual»)