Front / FN3 / Brake Caliper, Servicing: Overview

FN3 brake caliper, servicing
Special tools and equipment





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

Note:
^ Install complete repair kit.
^ After replacing brake pads and 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, Refer to Steering and Suspension, Wheels and Tires

1 - Brake hose
^ Do not disconnect brake hose when changing brake pads
2 - Protective cap
^ Remove
3 - Guide pins, 25 Nm
4 - Brake line, 15 Nm
^ Screw into brake caliper housing
^ Screw into brake hose, counter hold on brake hose hex.
^ Make sure that lugs are properly seated in retainer grooves.
5 - Brake caliper
^ Do not disconnect brake hose when changing brake pads
Removing:
- Remove brake pads, Refer to Brake Pads, Removing and Installing, See -item 13
- Install brake pedal depressor VAG1869/2
- Remove brake hose -item 1 - from brake caliper
^ Installing:
- Install brake pads, Refer to Brake Pads, Removing and Installing, See -item 13
- Install brake hose -item 1 - onto brake caliper
- Remove brake pedal depressor VAG1869/2
- Bleed brake system
6 - Ribbed combi bolt, 120 Nm
^ Clean ribs if re-using
7 - Brake carrier
^ Bolt to wheel bearing housing
8 - Brake pads
^ Without wear indicator
^ Thickness 14 mm
^ When worn always replace both sides
^ Removing and installing, Refer to Brake Pads, Removing and Installing
^ Wear limit: 7 mm including backing plate
^ The arrow on the inner pad (with spring) must point in the direction of brake disc rotation when moving forward. May create noises if incorrectly installed.
^ There is an adhesive foil on the backplates of the outer brake pads. The protective foil must be pulled off before inserting.
9 - Retaining spring
^ Insert in both holes of brake caliper housing

Note: The retaining spring must be pressed under the brake carrier after inserting into both holes. Faulty installation will not allow compensation of outer pad wear. This will cause pedal travel to increase.

10 - Brake disc
^ Vented brake disc to vehicle identity No. 3B X 124 107: diameter 282.5 mm
^ Vented brake disc from vehicle identity No. 3B X 124 108: 282.5 mm
^ Brake disc thickness: 25 mm
^ Wear limit: 23 mm
^ When worn always replace both sides
^ Remove brake caliper prior to removing
11 - Retainer
^ Bolt to brake caliper housing
12 - Hex bolt, 10 Nm
13 - Brake pads
^ With wear indicator
- Warning lamp lights up on instrument panel when wear limit is reached (limit: 2 to 3 mm)
- Thickness 14 mm
^ Always replace both sides
^ Removing and installing, Refer to Brake Pads, Removing and Installing
^ Wear limit: 7 mm including backing plate
14 - Connector
^ For pad replacement remove from bracket -item 15-
15 - Bracket