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

Brake caliper removed and separated from the hydraulic system. Refer to BRAKE CALIPER, REPLACING, STEEL BRAKES 1LA/1LB .

TIP:

Make sure that the paint coat on the brake caliper is not damaged when removing the brake caliper pistons and the protective caps.

CAUTION:

Leaking brake fluid increases the risk of injury.

Irritation and injury to skin and eyes possible.

- Wear protective eyewear.

- Wear safety gloves.

-- Place a cloth over the brake caliper chamber to catch any spraying brake fluid. Place another cloth tightly around the compressed air gun nozzle on the brake caliper.

-- Tension the brake caliper in a vise with protective covers over the jaws.

Fig 1: Identifying Brake Caliper Housing

Courtesy of AUDI OF AMERICA, LLC

TIP:

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

The bleed screws are closed.

-- Position the compressed air gun nozzle on the hole -arrow- for the brake hose and press the brake caliper piston out of the brake caliper.

TIP:

Fig 2: Identifying Protective Cap Pried Off From Brake Caliper With Trim Removal Wedge 3409

Courtesy of AUDI OF AMERICA, LLC

If the same protective cap should be re-installed, use the Removal Tool :T40338 instead of the Trim Removal Wedge :3409 to remove it without damaging it.

-- Pry the protective cap out of the brake caliper.

A - Vise Protective Jaws

-- Remove the seal using the Trim Removal Wedge :3409 .

Fig 3: Identifying Removal Of Brake Caliper Seal With Wedge 3409

Courtesy of AUDI OF AMERICA, LLC

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