Audi Workshop Service and Repair Manuals

Removing and installing brake pads

Special tools and workshop equipment required t  Torque wrench -V.A.G 1331- t  Torque wrench -V.A.G 1410- t  Torque wrench -V.A.G 1332- t  Brake pedal actuator -V.A.G 1869/2- t  Piston resetting appliance -T10145- Removing –  Raise vehicle. –  Remove wheels.   Note t  Mark brake pads when removing them if they are to be reinstalled. Reinstall in their original position to prevent uneven braking. t  The brake disc is secured with a Torx bolt.

–  Remove protective caps -arrows-.

–  On vehicles equipped with a brake pad wear indicator, unplug connector -1-. –  Slightly lift up locating lug on lower part of connector -2- and turn 90°. –  Pull lower half of connector out of bracket.

–  Lever brake pad retaining spring out of brake caliper housing with a screwdriver and remove.

–  Unscrew and remove both guide pins from brake caliper. –  Take off brake caliper housing and lay to one side so that the weight of the brake caliper does not stress or damage the brake hose. –  Take brake pads out of brake caliper housing or from brake carrier. Installing

–  Press piston back. Only use methylated spirits to clean the brake caliper housing.   Note Before inserting new brake pads, press piston back into cylinder with resetting appliance. Before pressing the piston back, draw off brake fluid from the reservoir with a bleeder bottle. Otherwise, fluid can overflow and cause damage, particularly if reservoir has been topped up.   WARNING Brake fluid is poisonous and must NOT be sucked through a hose with the mouth.

–  Insert brake pad with retaining spring in brake caliper housing (piston).   Note The inner pad (with spring) has an arrow. The arrow must point in direction of brake disc rotation when moving forwards. May create noises if incorrectly installed.

–  Pull off protective foil on backplate of outer brake pad. –  Fit outer brake pad onto brake carrier. –  Secure brake caliper housing to brake carrier with both guide pins (tighten to 30 Nm). –  Fit both protective caps. –  Insert retaining spring into brake caliper housing. –  Attach electrical connector for brake pad wear indicator. –  Install wheels → Wheels and tyres; Rep. Gr.44.   Note t  The retaining spring must be pressed under the brake carrier after inserting into both holes. If incorrectly installed, the wear of the outer pad cannot be adjusted, and the pedal travel will be increased as a result. t  After installing the brake pads, depress pedal firmly several times with the vehicle stationary, so that the brake pads are properly seated in their normal operating position. –  Check brake fluid level and top up if necessary.