Front Brake Caliper Piston, Removing And Installing: Installing

-- Only clean the surfaces of the pistons and seal with mineral spirits and then dry.

-- Apply a thin coat of Assembly Paste G 052 150 A2 on the piston and the seal before inserting.

-- Insert the seal into the brake caliper.

Fig 1: Identifying Oil Seal In Brake Caliper Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Place the cap with the outer sealing lip on the piston.

Fig 2: Identifying Protective Seal With Outer Sealing Lip On Piston

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Insert the inner sealing lip into the cylinder groove using the :3409  .

Fig 3: Identifying Oil Seal In Brake Caliper Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

At the same time hold the piston in front of brake caliper.

-- Push the piston by hand as far back as possible in the brake caliper.

Fig 4: Pressing Piston Into Brake Caliper Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Press the piston into the brake caliper using the piston resetting tool.

Fig 5: Identifying Piston In Brake Caliper Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Outer sealing lip of protective cap will then engage in the piston groove.