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, piston and seal .

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

-- Insert oil seal in 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: Using Equal Pressure To Push 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.