Overview - Rear Brake Caliper

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2016 Audi S4, 2016 Audi A4 Quattro, 2016 Audi A4, 2015 Audi S4, and 2015 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

When servicing, always install entire repair kit.

Apply thin coat of Assembly Paste G 052 150 A2 to brake cylinders, pistons and seals.

Fig 1: Brake Caliper, Servicing Overview

Courtesy of AUDI OF AMERICA, LLC

1 -
Self-Locking Screw
- 35 Nm
- Always replace.
- Counterhold at the guide pin when loosening and tightening.
2 -
Brake Caliper Housing with Actuator
3 -
Bleeder Valve
- 13 Nm
4 -
Dust Cap
- Push onto bleed valve
5 -
Seal
- Removing and installing. Refer to BRAKE CALIPER PISTON, REMOVING AND INSTALLING .
6 -
Pressure Nut
- To operate parking brake
7 -
Piston
- Removing and installing. Refer to BRAKE CALIPER PISTON, REMOVING AND INSTALLING .
8 -
Guide Pin
- Grease before pulling on protective cap
- Delivered as a replacement part with sufficient grease.
- Replacing. Refer to BEARING BUSHING AND GUIDE PIN, REPLACING .
9 -
Protective Cap
- Pull onto the brake carrier and guide pin.
- Replacing. Refer to BEARING BUSHING AND GUIDE PIN, REPLACING .
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 protective caps or guide pins are damaged. Use supplied grease packet to lubricate guide pins.
11 -
Protective Cap
- Removing and installing. Refer to BRAKE CALIPER PISTON, REMOVING AND INSTALLING .
- Pull onto the piston with the outer sealing lip.