Rear brake disc — removal and installation (Audi 100 C3)

1. Jack up the rear of the vehicle and support it on axle stands. Remove the corresponding rear wheel.

2. Rotate the disc and examine its surface condition. Light scuffing is acceptable, but if it is excessive, the disc must be removed and replaced or reground. Use a micrometer to check the disc thickness at several points.

3. To remove the disc, follow the instructions Chapter 11 and remove the rear disc caliper and the mounting bracket. However, do not disconnect the brake system flexible pipe - tie the caliper with twine or wire and place it under the wheel arch.

4. Remove the disc from the hub flange.

5. Before installation, check that the mating surfaces of the disc and hub flange are completely clean, then place the disc.

6. Install the caliper assembly as described in Chapter 11, but note that there is no need to bleed the hydraulic system.