Brake Caliper Piston, Removing And Installing, Dual-Piston Brake: Installing

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NOTE:

Apply a thin layer of lithium grease to the brake cylinder and piston. Refer to Parts Information.

-- The surface of the piston and seal must only be cleaned with mineral spirits or commercially available and then dried.

-- Insert oil seal in the brake caliper housing.

Fig 1: Inserting Oil Seal In Brake Caliper Housing

Courtesy of AUDI OF AMERICA, LLC

-- Install protective cap on piston.

Fig 2: Identifying Protective Cap On Piston

Courtesy of AUDI OF AMERICA, LLC

-- Push piston into brake caliper housing using constant pressure.

Fig 3: Pushing Piston Into Brake Caliper Housing

Courtesy of AUDI OF AMERICA, LLC

The protective cap must be seated properly in the groove, push slightly farther if necessary.