Brakes, FN 3 Overview

Brakes, FN 3 Overview

• Install complete repair kit

• After replacing brake pads, depress brake pedal several times firmly to properly seat brake pads in their normal operating position.

• When siphoning brake fluid, always use a bleeder bottle that is used exclusively for brake fluid. Brake fluid is poisonous. NEVER siphon brake fluid with your mouth!

General notes => [ To siphon off brake fluid from the brake fluid reservoir, use the. ] Brakes, FS III Overview






1 - Bolt

• 10 Nm

2 - Brake Disc

• Allocation, dimensions, wear limits, refer to => [ Brakes ] Brakes

• Remove brake caliper housing, to remove

• Do not use excessive force to separate the brake rotor from the wheel hub. If necessary, use rust penetrant, otherwise the brake rotors could be damaged.

• Must always be replaced together on both sides of axle

3 - Bolt

• 4 Nm

4 - Brake Pads

• Pad thickness, wear limit, refer to => [ Brakes ] Brakes

• Different versions, refer to the electronic parts catalog ETKA

• Checking brake pad thickness.

• Removing and installing, refer to => [ Brake Pads, FN 3 ] Brake Pads, FN 3

• Observe installed position

• Must always be replaced together on both sides of axle

5 - Retaining Spring

• Insert in both holes of brake caliper housing

6 - Brake Carrier

• Supplied as replacement part assembled with sufficient grease on guide pins

• If the protective caps are damaged, install repair kit; use included grease packet to grease the guide pins

7 - Brake Caliper Housing

• Piston diameter, refer to => [ Brakes ] Brakes different versions, refer to the electronic parts catalog ETKA

• To replace brake pads, unfasten from brake carrier

• Removing and installing, refer to => [ Brake Caliper, FN 3 ] Brake Caliper, FN 3

• Servicing, refer to => [ Brake Caliper, FN3 Overview ] Brake Caliper, FN3 Overview

• Brake caliper with a balance weight, refer to => [ Brake Caliper with Balance Weight ] Brake Caliper With Balance Weight

8 - Guide Pins

• 30 Nm

9 - Cap

10 - Brake Hose with Banjo Fitting and Union Bolt

• 35 Nm

• Anti-rotation device

11 - Guide Pins

• 30 Nm

12 - Cap

13 - Sheet-Metal Screw

14 - Bracket

15 - Ribbed Bolt

• 190 Nm

• If using again, clean the ribs

16 - Wheel Bearing Housing

17 - Wheel Speed Sensor

• Removing and installing, refer to => [ Speed Sensor at Front Axle ] Speed Sensor at Front Axle

• Before inserting sensor, clean inner surface of bore and coat with hot bolt paste (G 052 112 A3)

18 - Hex Socket Head Bolt

• Tightening specification - 4 - => [ Hex Socket Head Bolt ] Anti-Lock Brake/Electronic Stabilization Program System at Front Axle Overview,

19 - Wheel Bearing Unit with Integrated Rotor

20 - Cover Plate

21 - Brake Pads

• With wear indicator (only on the left side)

• When the wear limit is reached, an indicator in the instrument cluster lights up.

• Pad thickness, wear limit, refer to => [ Brakes ] Brakes

• Different versions, refer to the electronic parts catalog ETKA

• Checking brake pad thickness

• Removing and installing, refer to => [ Brake Pads, FN 3 ] Brake Pads, FN 3

• Observe installed position

• Must always be replaced together on both sides of axle

22 - Electrical Connection

• Remove from bracket - 14 - when replacing brake pad

Installed Position of Brake Pads






1 right brake pad, piston side
2 left brake pad, piston side

• In installed position, the arrow on the backing plate of the brake pad must point downward

Brake Hose Connection with Anti-Rotation Device

- Make sure that the groove in the banjo fitting of the brake hose is inserted onto the locating tab - arrow -.