Rear Brake Caliper, Servicing

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NOTE:

When servicing, always install entire repair kit.

Coat the brake cylinder, piston and seal lightly with Assembly PasteG 052 150 A2.

Fig 1: Exploded View Of Rear Brake Caliper

Courtesy of AUDI OF AMERICA, LLC

1 -
Self-Locking Screw
- Tightening specification 35 Nm.
- Always replace.
- When loosening and tightening, counter-hold at guide pin
2 -
Brake Caliper Housing with Actuator
- It is not possible to separate the brake caliper from the actuator
- Bleed the brake caliper housing after servicing. Refer to BRAKE SYSTEM, BLEEDING .
3 -
Bleed Screw
4 -
Dust Cap
- Install the bleed screw
5 -
Seal
- Refer to REAR BRAKE CALIPER PISTON, REMOVING AND INSTALLING
6 -
Pressure Nut
- For actuating the electromechanical parking brake
7 -
Piston
- Refer to REAR BRAKE CALIPER PISTON, REMOVING AND INSTALLING
8 -
Guide Pin
- Grease before pulling on protective cap
9 -
Protective Cap
- Install on brake carrier and guide pin.
10 -
Brake Carrier with Guide Pins and Cap
- Supplied as an assembled replacement part with sufficient grease on guide pins
- Install the repair kit if the caps or guide pins are damaged. Use supplied grease packet to lubricate guide pins.
- Refer to BRAKE CALIPER WITH BRAKE CARRIER, REMOVING AND INSTALLING
- Refer to REAR BRAKE PADS, REMOVING AND INSTALLING
11 -
Protective Cap
- Pull onto piston with outer sealing lip
- Refer to REAR BRAKE CALIPER PISTON, REMOVING AND INSTALLING