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   Note t  Mark brake pads when removing them if they are to be reinstalled. Reinstall in their original position to prevent uneven braking. t  When installing brake discs, note direction of travel -indicated by arrow on brake disc- and fitting location -left or right-. –  Raise the vehicle. –  Remove wheels. –  The brake disc is secured with a cross-head bolt -1-.

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

–  Unplug connector for brake pad wear indicator. –  Turn connector 90° while using a screwdriver to release connector from bracket. –  Pull connector upwards out of bracket and detach wire.

–  Detach brake line from bracket.

–  Remove caps -1-.

–  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. Use only methylated spirits to clean the brake caliper housing. Installing

–  Press piston back.   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 drawn off by sucking through a hose.

–  Insert brake pad with retaining spring and wear indicator into brake caliper housing (piston).

–  Fit outer brake pad -2- in brake caliper.   Note Fit brake pads into brake caliper and install assembly on brake carrier / brake disc.

–  Secure brake caliper housing to brake carrier with both guide pins (tighten to 30 Nm). –  Make sure not to twist the brake hose when installing. –  Fit both caps. –  Insert retaining spring into brake caliper housing. –  Attach brake line –  Connect wear indicator connector and insert wire in dust cap and protective cap. –  Fit wheels → Wheels and tyres; Rep. gr.44.   Note t  The retaining spring must be pushed under the brake carrier after engaging onto both studs. 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.