Disconnect the wire from the bracket "2" by turning the wire to the left "A" and remove the wire. Unscrew the bolts "1" on the brake bracket. Remove the brake caliper with the brake pads and the brake bracket. Do not hang the brake caliper with the brake bracket on the brake hose, but secure it to the body with a suitable cable tie or wire. Do not load the brake hose with the weight of the brake caliper. Do not press the brake pedal when the brake caliper is removed.
Installation
Use new bolts. Carefully press the brake caliper with the brake bracket and pads into the brake disc. Tighten the new bolts "1" securing the brake bracket. Insert the brake hose into the bracket "4". Insert the wire into the bracket "2" and secure the wire by turning it to the right "B". Install the wheels. Lower the car.
[This publication is borrowed from the resource «AUDImanual.ru»]