Remove/Install Rear-Axle Brake Caliper - AR42.10-S-0080E
Model 447, 448
Except Code XM7 (MOPF II)
Model 447
With Code XM7 (MOPF II)
Except Code B25 (Electric parking brake)
MODIFICATION NOTES
| 22.03.2024 | Work procedure revised. | Entire document. |
| 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 | |
| Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid | Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. | AS42.50-Z-0001-01A | |
| Notice | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Notice | Brake fluid notes | AH42.50-P-0001-01A | |
| Notice | Notes on repairs to brake system | AH42.00-P-0003-01A | |
| Remove | |||
| 1 | Remove respective rear wheel. | AR40.10-S-1100E | |
| 2 | Remove each brake hose. | AR42.10-S-0025E | |
| 3 | Remove cover caps from screws (1). | ||
| 4 | Unscrew screws (1) and remove brake caliper (2) from brake caliper support (3). | ||
| Clean | |||
| 5 | Clean brake caliper (2) and any areas contaminated by escaping brake fluid. | Assembly cleaner | *BR00.45-Z-1028-04A |
| Fig 1 | |||
| Check | |||
| 6 | Check condition of pistons, cover cap and brake hose of brake caliper (2). | If damage is present, ↓ replace brake caliper (2) or brake hose. If brake caliper (2) is replaced, ↓ replace brake caliper support (3). |
*BA42.10-Z-1003-12KOJ |
| Install | |||
| 7 | Screw in new screws (1) and attach brake caliper (2) at brake caliper support (3). | *BA42.10-Z-1002-12KOJ | |
| 8 | Fit cover caps for screws (1). | ||
| 9 | Install brake hose. | AR42.10-S-0025E | |
| 10 | Attach rear wheel. | AR40.10-S-1100E | |
| 11 | Bleed brake system. | AR42.10-S-0010E | |
| Check | |||
| 12 | Perform brake test on test stand. | ||
| Brake test | AP42.00-S-4290E |
REAR AXLE BRAKE CALIPER
| Number | Designation | Model 447, 448 | |
|---|---|---|---|
| BA42.10-Z-1002-12KOJ | Screw, floating brake caliper to floating caliper carrier | Nm | 34 |
REAR AXLE BRAKE CALIPER
| Number | Designation | Model 447, 448 | ||
|---|---|---|---|---|
| BA42.10-Z-1003-12KOJ | Screw, rear floating caliper carrier to semi-trailing arm | M14x1.5 | Nm | 172 |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1028-04A | Assembly cleaner | A 000 986 56 01 |