Remove/install front axle brake caliper - AR42.10-P-0070GI
MODEL 163.113 #A as of 289565, 163.113 #X as of 754620, 163.128/172/174/175
MODEL 163.154 #A as of 289565, 163.157 except CODE (494a) USA version

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Remove/Install |
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Risk of poisoning
from swallowing brake fluid. Risk of injury
from skin and eye contact with brake fluid. |
Pour brake fluid only into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. |
AS42.50-Z-0001-01A |
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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 commissioning the vehicle, operate the brake pedal several times until the pressure in the brake system is built up and maintained. |
AS42.50-Z-0002-01A |
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Notes on brake fluid |
All models |
AH42.50-P-0001-01A |
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Notes on repairs to brake system |
All models |
AH42.00-P-0003-01A |
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Notes on installing brake hoses |
Model 163 |
AH42.10-P-9406-01GH |
| 1 |
Remove wheels |
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Remove/install wheels, rotate if necessary |
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AP40.10-P-4050GH |
| 2.1 |
Unplug contact sensor connector (1) |
If installed. |
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| 3.1 |
Unscrew left front brake pad contact sensor (S10/1) |
If installed. |
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Installation:
Install new self-locking bolts. |
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*BA42.10-P-1003-02A |
| 4 |
Depress brake pedal with the brake pedal wind sufficiently until the replenishing port in the brake master cylinder is shut off |
Do not allow brake fluid supply reservoir to run completely empty. |
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Open bleed screw at fixed caliper to reduce pressure. |
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Brake pedal winch |
Figure |
| 5 |
Unscrew banjo bolt (51b) from fixed caliper |
Installation
Replace gaskets (51a). |
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*BA42.10-P-1006-04A |
| 6.1 |
Remove brake pads from fixed caliper |
If necessary. |
AR42.10-P-0161GI |
| 7 |
Detach fixed caliper (31a) from steering knuckle |
Installation:
Replace self-locking bolts (35). |
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Always replace fixed brake calipers on the axle in pairs. |
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*BA42.10-P-1001-02A |
| 8 |
Install in the reverse order |
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| 9 |
Bleed brake system |
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AR42.10-P-0010GH |
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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 commissioning the vehicle, operate the brake pedal several times until the pressure in the brake system is built up and maintained. |
AS42.50-Z-0002-01A |
| 10 |
Operate brake pedal several times until brake pads make contact with brake discs (firm resistance can be felt). |
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| 11 |
Check brake system for leaks |
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AR42.10-P-0100-01A |

Front axle fixed caliper
| Number |
Designation |
Model 163.113 as of VIN A289565, X754620 163.154 as of VIN A289565 except  |
Model 163.128/ 172/174/ 175 |
Model 163.128/ except  |
| BA42.10-P-1001-02A |
Self-locking bolt, fixed caliper to steering knuckle |
Nm |
180 |
180 |
180 |
| BA42.10-P-1003-02A |
Bolt, brake pad contact sensor to fixed caliper |
Nm |
9 |
9 |
9 |

Brake lines, brake hoses
| Number |
Designation |
Model 163.128/ 172/174/ 175 |
Model 163.157 except  |
Model 163.113 as of VIN A289565, X754620 163.154 as of VIN A289565 except  |
| BA42.10-P-1006-04A |
Banjo bolt, brake hose to fixed caliper |
Nm |
33 |
33 |
33 |