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Home >> Audi >> 2011 >> S4 Standard >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System - Hydraulic Components (Sedan) (As Of 01.2014) >> 47 Hydraulic Components >> Front Brake Caliper >> Brake Caliper Piston, Removing And Installing >> Brake Caliper Piston, Removing And Installing, Ceramic Brakes 1LW >> Removing

Brake Caliper Piston, Removing And Installing, Ceramic Brakes 1LW: Removing

-- Force piston from brake caliper housing, one at a time, using compressed air.

Fig 1: Forcing Pistons Out Individually Of Brake Caliper Housing Using Compressed Air
GWWN47-0216Courtesy of AUDI OF AMERICA, LLC

Only one piston can be pressed out at a time. Hold the opposing piston in the brake caliper housing using the piston resetting tool -a-. Block the other pistons, for example, using wooden blocks -b-. In addition, place a wooden board -c- in front of the piston resetting tool so that the piston will not be damaged when pressed out.

-- Remove the seal with the Trim Removal Wedge 3409.

Fig 2: Identifying Seal & Trim Removal Wedge 3409
GWWN47-0217Courtesy of AUDI OF AMERICA, LLC

When removing, make sure that surface of cylinder is not damaged.