Front / C54 Brake Caliper, Servicing: Overview

C54 brake caliper, servicing
Special tools and equipment





^ VAG1331 Torque wrench (or equivalent)
^ VAG1410 Torque wrench (or equivalent)
^ VAG1869/2 Brake pedal depressor

Note:
^ After replacing brake pads with vehicle stationary, depress brake pedal firmly several times so that the brake pads are properly seated in their normal operating position.
^ To draw off brake fluid from the reservoir, use a bleeder bottle which is used only for brake fluid. Brake fluid is poisonous, NEVER siphon brake fluid with your mouth!
^ Wheel bolt tightening torque

1 - Brake hose
^ Do not disconnect brake hose when changing brake pads
2 - Spring clip
3 - Brake line, 15 Nm
^ Screw into brake caliper housing
^ Screw into brake hose, counter hold hex on brake hose.
^ Make sure that lugs are properly seated in retainer grooves.
4 - Self-locking hex bolt, 35 Nm
^ Replace
^ When loosening and tightening counter hold on guide pin
5 - Ribbed combi bolt, 120 Nm
^ Clean ribs if re-using
6 - Brake carrier with guide pins and protective caps
^ Supplied as assembled replacement part with sufficient grease on guide pins
^ If protective caps or guide pins are damaged use repair kit. Use grease packet supplied to lubricate guide pins.
7 - Brake disc
^ Vented brake disc: diameter 280 mm
^ Brake disc thickness: 22 mm
^ Wear limit: 20 mm
^ Always replace both sides
^ Remove brake caliper prior to removing
^ Never remove brake discs from hub by force. If necessary use penetrating fluid, otherwise brake discs can be damaged.
8 - Brake pads
^ Without wear indicator
^ Thickness 14 mm
^ Always replace both sides
^ Removing and installing, Refer to Brake Pads, Removing and Installing
^ Wear limit: 7 mm including backing plate
9 - Heat shield
^ Insert into piston
10 - Brake caliper
^ Do not disconnect brake hose when changing brake pads
^ Removing:
- Remove brake pads, Refer to Brake Pads, Removing and Installing, See -item 8
- Install brake pedal depressor VAG1869/2
- Unscrew brake hose -item 1 - from brake caliper
^ Installing:
- Install brake pads, Refer to Brake Pads, Removing and Installing, See -item 8
- Install brake hose -item 1 - on brake caliper
- Remove brake pedal depressor VAG1869/2
^ Servicing, Refer to Front / C54 Brake Caliper, Servicing
11 - Retainer
^ Bolt to brake caliper housing
12 - Hex bolt, 10 Nm
13 - Brake pads
^ With wear indicator
^ Thickness 14 mm
^ Wear limit: 7 mm including backing plate
^ With wear indicator
- When wear limit is reached (limit: 2 to 3 mm) warning lamp lights up on instrument cluster
^ Always replace both sides
^ Removing and installing, Refer to Brake Pads, Removing and Installing
14 - Connector
^ When changing pads remove from bracket -item 15
15 - Bracket