Remove/install front axle brake caliper - AR42.10-P-0070W
MODEL 172 (except 172.466/475) With single-piece brake caliper support
| Remove | |||
| 1 | Remove brake linings (6) | AR42.10-P-1600W | |
| 2 | Unscrew bolt (3) and remove right front brake wear sensor electrical connector (S10/2x1) from brake caliper (2) | When removing the brake caliper (2) on the right side of the vehicle. | |
| *BA42.10-P-1002-10J | |||
| 3 | Detach brake hose (5) | AR42.10-P-0013V | |
Seal the connections immediately using suitable This prevents damage from escaping brake fluid. |
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| Figure | |||
| 4 | Remove spring steel sheets (8) from brake caliper support (1) | When replacing brake caliper support (1). | |
| Check | |||
| 5 | Check condition of brake linings (6) | ||
| AP42.10-P-4253A | |||
| If necessary ↓ Replace brake linings (6) |
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| AR42.10-P-1600W | |||
| 6 | Check condition of brake disk (7) and measure degree of wear | ||
| AP42.10-P-4258V | |||
| If necessary ↓ Replace brake disks (7) |
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| AR42.10-P-0220W | |||
| 7 | Check brake caliper (2) and dust boot (11) on brake piston for damage and replace if necessary | ||
| 8 | Check boots (9) for damage and correct seating as well as sliding bolts (10) for ease of movement and replace if necessary. | ||
| Install | |||
| 9 | Press back brake piston using pusher tool (01) | If brake piston is sluggish ↓ Replace brake caliper (2) |
Figure |
| Clean | |||
| 10 | Clean contact surfaces of brake linings (6) on brake caliper (2) and brake caliper support (1) using a rag | Do not damage the dust boot (11) on the brake piston. Do not use sharp-edged or pointed objects. The brake caliper (2) or brake caliper support (1) will otherwise be damaged. |
|
| Assembly cleaner | *BR00.45-Z-1028-04A | ||
| 11 | Install in the reverse order | ||
| Risk of accident when commissioning the vehicle due to a lack of braking effect when the service brake is operated for the first time after repair work. | Before starting the engine, actuate brake pedal several times until pressure is built up and maintained in the brake system. | AS42.50-Z-0002-01A | |
| 12 | Depress brake pedal several times until brake linings (6) rest against brake disks (7) | ||
| 13 | Check fluid level in brake fluid reservoir, and correct if necessary | ||
| AP42.10-P-4210V | |||
| 14 | Carry out brake test on the test stand | ||
| AP42.00-P-4290BA |
FRONT AXLE BRAKE CALIPER
| Number | Designation | Model 172 | |
|---|---|---|---|
| BA42.10-P-1002-10J | Bolt, brake wear sensor to brake caliper | Nm | 8 |
REPAIR MATERIALS
| Number | Designation | Order note |
|---|---|---|
| BR00.45-Z-1028-04A | Assembly cleaner | Adolf Wurth GmbH & Co. KG |