Brake systems · Brakes – mechanism · Repairing front brakes

Repairing front brakes, FS III brake caliper

1 Brake disc
- Internally ventilated, ∅ 256 mm
- Thickness: 22 mm
- Wear limit: 19 mm.
- Always renew on both sides of an axle.
- Unscrew brake caliper prior to removing.
- Never remove brake discs from wheel hub by force. If necessary use penetrating fluid, because otherwise brake discs can be damaged.
2 Torx bolt, 4.5 Nm
3 Brake pads
- Thickness: 14 mm not including backplate.
- Wear limit: 2 mm not including backplate.
- Checking thickness ⇒ Maintenance; Booklet; Front and rear brake pads/linings: Checking thickness.
- Always renew on both sides of an axle.
- Removing and installing ⇒ 1.2 Removing and installing brake pads, brake caliper FS III.
4 Brake caliper
- Do not disconnect brake hose when changing pads.
- Removing and installing ⇒ 1.3 Removing and installing brake caliper FS III.
- Repairing ⇒ 1 Repairing front brake calipers.
5 Guide pin, 30 Nm
6 Cover cap
- Remove
7 Spring pin
8 Brake hose with banjo union and banjo bolt, 35 Nm
9 Wheel hub with wheel bearing
- Pressing out and in ⇒ Running gear, axles, steering; Rep. gr. 40; Assembly overview - wheel bearings.
10 Torx bolts, 12 Nm
11 Splash plate
12 Wheel bearing housing
- With integrated brake carrier.
- Lightly grease brake pad guiding surfaces with lithium grease G 052150 A2.
13 ABS speed sensor
- Before inserting sensor, clean hole inner surface and coat with high-temperature paste G 052 112 A3.
14 Hexagon socket head bolt, 8 Nm