Remove/Install Rear-Axle Brake Caliper - AR42.10-P-0080MFA
Model 118, 177, 243, 247
MODIFICATION NOTES
| 12.03.2021 | Operation step sequence changed. | Operation step 1-10 |
Shown on model 177.0
| Risk of injury. Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | AS00.00-Z-0002-01A | |
| Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities. | No parts of the body or limbs should be within the operating area of mechanical components when moving components. | AS00.00-Z-0009-01A | |
| 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 externally invisible brake fluid loss | AH42.10-P-9406-02A | |
| Notice | Notes on repairs to brake system | AH42.00-P-0003-01A | |
| Notice | Notes on self-locking nuts and bolts | AH00.00-P-0001-01KOA | |
| Note on calculation of tightening torque when using insertion or socket tools with various effective lengths | AH00.00-P-0015-01CW | ||
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Remove/install | |||
| 1 | Remove brake pads. | AR42.10-P-1710MFA | |
| 2 | Release and disconnect electrical connector (2) from left electronic parking brake actuator motor (M76/1) or right electronic parking brake actuator motor (M76/2). | ||
| 3 | Remove screw (3), seal brake hose (4) and brake caliper (1), and place brake hose (4) to one side. | AR42.10-P-0013MFA | |
Always replace brake hoses after their removal. |
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| 4 | Unscrew screws (5) and remove brake caliper (1). | *BA42.10-P-1002-12X | |
| Check | |||
| 5 | Check brake caliper (1) for damage. | If the brake caliper (1) is damaged, ↓ replace brake caliper (1). |
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| 6 | Check dust boot on brake piston for damage. | If the dust boot is damaged, ↓ replace brake caliper (1). |
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| 7 | Install in the reverse order. | ||
| Concluding tasks | |||
| 8 | Bleed brake system. | AR42.10-P-0010MFA | |
| 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 | |
| 9 | Operate brake pedal several times until the brake pads contact the brake disks. | ||
| Risk of death caused by limbs being caught or crushed by rotating parts when performing tests on the brake test stand | Never leave the vehicle unattended on the rollers except in an emergency. Ensure that no one is under the vehicle or near rotating parts during testing. In case of emergency, use the EMERGENCY OFF switch to shut down test stand. | AS42.00-Z-0001-01A | |
| 10 | Perform brake test on test stand. | ||
| Model 243 | AP42.00-P-4290EQ | ||
| Model 118, 177, 247 | AP42.00-P-4290BA |
REAR AXLE BRAKE CALIPER
| Number | Designation | Model 118 with code U54 (Compound-link axle) | Model 118 with code U55 (Multi-link axle) | ||
|---|---|---|---|---|---|
| BA42.10-P-1002-12X | Bolt, guide pin to brake caliper | M8 | Nm | 30 | 30 |
REAR AXLE BRAKE CALIPER
| Number | Designation | Model 177 with code U54 (Compound-link axle) | Model 177 with code U55 (Multi-link axle) | ||
|---|---|---|---|---|---|
| BA42.10-P-1002-12X | Bolt, guide pin to brake caliper | M8 | Nm | 30 | 30 |
REAR AXLE BRAKE CALIPER
| Number | Designation | Model 243 | Model 247 with code U54 (Compound-link axle) | ||
|---|---|---|---|---|---|
| BA42.10-P-1002-12X | Bolt, guide pin to brake caliper | M8 | Nm | 30 | 30 |
REAR AXLE BRAKE CALIPER
| Number | Designation | Model 247 with code U55 (Multi-link axle) | ||
|---|---|---|---|---|
| BA42.10-P-1002-12X | Bolt, guide pin to brake caliper | M8 | Nm | 30 |