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Home >> Audi >> 2009 >> S4 Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake System >> 46 - Brakes - Mechanical components >> Front brakes C54 >> Brake pads, removing and installing

Brake pads, removing and installing

Fig 1: Identifying Special Tools - Brake Pads, Removing And Installing
GW00019707Courtesy of VOLKSWAGEN UNITED STATES, INC.

Special tools, testers and auxiliary items required 

Removing 

NOTE:
  • Mark brake pads when removing them if they are to be reused. Reinstall in their original position to prevent uneven braking.
Fig 2: Brake Wear Pad Indicator Connector
GW00006788Courtesy of VOLKSWAGEN UNITED STATES, INC.
Fig 3: Removing Securing Bolts From Brake Caliper Housing, While Counter-Holding On Guide Pins
GW00019708Courtesy of VOLKSWAGEN UNITED STATES, INC.
Fig 4: Swinging Brake Caliper Housing Upward And Removing Brake Pads
GW00019709Courtesy of VOLKSWAGEN UNITED STATES, INC.
Fig 5: Pressing Piston Back Into Caliper Housing
GW00019710Courtesy of VOLKSWAGEN UNITED STATES, INC.
NOTE:
  • Press piston back into the cylinder with resetting tool, before inserting new brake pads. 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 off.
CAUTION: Brake fluid is poisonous and must never be extracted by mouth using a hose!

Installing 

Use methylated spirits to clean brake caliper housing. 

Fig 6: Swinging Brake Caliper Housing Upward And Removing Brake Pads
GW00019709Courtesy of VOLKSWAGEN UNITED STATES, INC.
NOTE:
  • The repair kit includes four self-locking hex bolts which must be installed.
  • After replacing brake pads, depress brake pedal firmly several times with vehicle stationary so that the brake pads are properly seated in their normal operating position.