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

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2022 Audi SQ5, 2022 Audi Q5 e, 2022 Audi Q5, 2021 Audi SQ5, and 2021 Audi Q5 e. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Apply a 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 the inner gasket in the brake caliper groove -arrow-.

Fig 1: Identifying Sealing Ring Installed In Brake Caliper

Courtesy of AUDI OF AMERICA, LLC

-- Press the protective cap onto the brake caliper housing so that it contacts the brake caliper housing all around.

Fig 2: Pressing Protective Cap Onto Brake Caliper Housing So That It Contacts Brake Caliper Housing All Around

Courtesy of AUDI OF AMERICA, LLC

-- It should no longer be possible to remove the protective cap from the brake caliper housing by hand.

-- Press the brake piston lightly on the protective cap.

Do not tilt the piston to avoid damaging the sealing boot.

-- Blow out the protective cap using compressed air (maximum 3 bar). The protective cap will thereby jump over the brake piston.

-- Press the brake piston into the caliper using the : T10145 .

Fig 3: Pressing Piston Into Brake Caliper Housing Using Piston Resetting Tool T10145

Courtesy of AUDI OF AMERICA, LLC

Do not tilt the piston to avoid damaging the sealing boot.

NOTE:

The inner sealing lip of the protective cap thereby slips into the groove on the piston.