Front Brakes, FN 3 Caliper Overview

Front Brakes, FN 3 Caliper Overview

• After replacing brake pads, depress brake pedal firmly several times with vehicle stationary so that the brake pads are properly seated in their normal operating position.

• Use brake charger/bleeder unit (VAS 5234) or extraction device (V.A.G 1869/4) to extract brake fluid from brake fluid reservoir.

• Before removing brake caliper or disconnecting brake hose, brake pedal actuator (V.A.G 1869/2) must be inserted (this dissipates pressure).

Assembly Overview FN3 15 Inch:






1 Phillips Head / Torx(R) Bolt

• 4 Nm

2 Brake Rotor

• Internally vented, 288 mm diameter

• Thickness: 25 mm

• Wear limit: 22 mm

• Must always be replaced together on both sides of axle

• Remove brake caliper and brake carrier before removing

3 Brake Pads

• Thickness: 14 mm without backing plate

• With wear indicator

• When wear limit is reached (limit: approximately 4 mm), the warning lamp lights up in instrument cluster

• Wear limit: 2 mm without backing plate

• Checking thickness

• Must always be replaced together on both sides of axle

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

4 Retaining Spring

• Insert in both holes of brake caliper

5 Brake Carrier

• Bolt to wheel bearing housing

6 Brake Caliper

• Do not remove brake hose when replacing brake pad

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

• Servicing, refer to => [ FN 3 Brake Caliper Overview ] FN 3 Brake Caliper Overview

7 Guide Pins

• 30 Nm

8 Cap

• Remove

9 Brake Hose with Banjo Fitting and Union Bolt

• 35 Nm

10 Ribbed Bolt

• 190 Nm

• Clean if using again.

11 Bolt

12 Bracket

13 Wheel Bearing Housing

• With fastened brake carrier

14 ABS Wheel Speed Sensor

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

15 Hex Socket Head Bolt

• 8 Nm

16 Cover Plate

17 Hex Head/Torx(R) Bolt

• 12 Nm

• Hex head bolt M6x10 changed from Torx(R) bolt M6x12

• Replace hex head bolt with hex head bolt and Torx(R) bolt with Torx(R) bolt

18 Wheel Bearing/Hub Unit

• The ABS sensor ring is installed in the wheel bearing

Assembly Overview FN3 16 Inch:






1 Torx(R) Bolt

• 12 Nm

2 Brake Rotor

• Internally vented, 312 mm diameter

• Thickness: 25 mm

• Wear limit: 22 mm

• Must always be replaced together on both sides of axle

• Remove brake caliper and brake carrier before removing

3 Torx(R) Bolt

• 4 Nm

4 Brake Pads

• Thickness 14 mm without backing plate

• With wear indicator

• When wear limit is reached (limit: approximately 4 mm), the warning lamp lights up in instrument cluster

• Wear limit: 2 mm without backing plate

• Checking thickness

• Must always be replaced together on both sides of axle

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

5 Retaining Spring

• Insert in both holes of brake caliper

6 Brake Carrier

• Bolt to wheel bearing housing

7 Brake Caliper

• Do not unscrew brake hose when replacing brake pad

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

• Servicing, refer to => [ FN 3 Brake Caliper Overview ] FN 3 Brake Caliper Overview

8 Guide Pins

• 30 Nm

9 Cap

• Remove

10 Brake Hose with Banjo Fitting and Union Bolt

• 35 Nm

11 Guide Pins

• 30 Nm

12 Cap

• Remove

13 Bolt

14 Bracket

15 Ribbed Bolt

• 190 Nm

• Clean if using again.

16 Wheel Bearing Housing

• With fastened brake carrier

17 ABS Wheel Speed Sensor

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

18 Hex Socket Head Bolt

• 8 Nm

19 Wheel Bearing/Hub Unit

• The ABS sensor ring is installed in the wheel bearing

20 Cover Plate