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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Components (Brake System) (2 Of 2) >> 47 Hydraulic Components >> Front Brake Caliper >> Brake Caliper, 1LC/1LD/1LE/1LF/1LH >> Brake Caliper Piston, Removing And Installing, 1LA/1LB >> Removing

Brake Caliper Piston, Removing And Installing, 1LA/1LB: Removing

-- Use compressed air to push the piston out of the brake caliper housing.

Fig 1: Force Piston Out Of Brake Caliper Housing Using Compressed Air
GWWV47-0308Courtesy of AUDI OF AMERICA, LLC
NOTE:

Place a wooden board into the recess so the piston is not damaged.

-- Carefully pry the protective cap -1- and the seal out of the brake caliper with the :VAS40338  -2- using gentle lever movements, and do not damage the groove for the protective cap in the brake caliper while doing so.

Fig 2: Prying The Protective Caps
GWWA00-11206Courtesy of AUDI OF AMERICA, LLC

-- Remove the gasket.

Fig 3: Removing/Installing Seal Using Trim Removal Wedge 3409
GWWV46-0970Courtesy of AUDI OF AMERICA, LLC

-- To do so, use the :3409  .

NOTE:

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