Replace brake hoses

AR42.10-P-0013MFA

Replace brake hoses

14.03.2019

Model

118, 177, 247

Modification notes

14.03.2019

Schraube Bremsschlauch an Bremssattel

Typ 177

BA42.10-P-1003-10ZA

1

Front brake hose

5

Front brake line

2

Front brake caliper

6

Retaining clamp

3

Bracket

7

Screw

4

Mounting clamp

8

Rear brake hose

9

Rear brake line

10

Rear brake caliper

11

Retaining clamp

12

Screw

 Danger

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

 Caution

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

Topical note

Notes on externally invisible brake fluid loss

AH42.10-P-9406-02A

Topical note

Notes on installing brake hoses

AH42.10-P-9406-01A

Topical note

Brake fluid notes

AH42.50-P-0001-01A

Topical note

Notes on repairs to brake system

AH42.00-P-0003-01A

Notes on safety-relevant components

AH00.00-Z-0019-01A

Note on calculation of tightening torque when using insertion or socket tools with various effective lengths

AH00.00-P-0015-01CW

 

Remove/install

1

Remove corresponding wheel and tire assembly.

AR40.10-P-1102MFA

Front brake hose (1)

2

Remove rear section of fender liner in left front or right front fender.

AR88.10-P-1301MFA

3

Open mounting clamp (4) and remove front brake hose (1) from mounting clamp (4) and holder (3).

 Installation: Make sure that the front brake hose (1) is seated correctly in the mounting clip (4) and holder (3).

4

Remove front brake hose (1) from front brake line (5) and seal exposed connections with suitable stop plugs.


Seal connections immediately.
Otherwise damage can be caused by escaping brake fluid.

 Installation:
Do not twist front brake hose (1) and make sure that it is routed correctly.
Otherwise, the front brake hose (1) will be damaged.

 Installation: Make sure that the retaining clamp (6) is seated correctly.

 The expansion reservoir for brake fluid must not run completely empty.

 Retaining screw, brake line to brake hose

*BA42.10-P-1004-04Q

 Torque tool set

*003589050900

 Record plug

*129589009100

5

Remove screw (7), remove front brake hose (1) and seal exposed connections with suitable stop plugs.

 Installation:
Do not twist front brake hose (1) and make sure that it is routed correctly.
Otherwise, the front brake hose (1) will be damaged.

 Installation: Replace front brake hose (1).

 Screw, brake hose to brake caliper

*BA42.10-P-1003-10ZA

 Record plug

*129589009100

 Box wrench

*000589760300

Rear brake hose (8)

6

Remove rear brake hose (8) from rear brake line (9) and seal exposed connections with suitable stop plugs.

 Installation:
Do not twist rear brake hose (8) and make sure that it is routed correctly.
Otherwise, the rear brake hose (8) will be damaged.


Seal the connections immediately to avoid damage being caused by brake fluid running out. The rear brake caliper (10) must not run empty.
The rear brake caliper (10) must otherwise be replaced.

 Installation: Make sure that the retaining clamp (11) is seated correctly.

 Collect escaping brake fluid.

 Retaining screw, brake line to brake hose

*BA42.10-P-1004-04Q

 Torque tool set

*003589050900

 Record plug

*129589009100

7

Remove screw (12), remove rear brake hose (8) and seal exposed connections with suitable stop plugs.

 Installation:
Do not twist rear brake hose (8) and make sure that it is routed correctly.
Otherwise the rear brake hose (8) will be damaged.

 Installation: Replace rear brake hose (8).

 Bolt, brake hose to brake caliper (floating brake caliper)

*BA42.10-P-1003-12X

 Record plug

*129589009100

 Box wrench

*000589760300

8

Install in the reverse order.

Concluding tasks

9

Bleed brake system.

AR42.10-P-0010MFA

 Front axle brake caliper

Number

Designation

Model 118

Model 177

BA42.10-P-1003-10ZA

Screw, brake hose to brake caliper

M12

Nm

42

48

 Front axle brake caliper

Number

Designation

Model 247

BA42.10-P-1003-10ZA

Screw, brake hose to brake caliper

M12

Nm

42

 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-1003-12X

Bolt, brake hose to brake caliper (floating brake caliper)

M12

Nm

42

42

 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-1003-12X

Bolt, brake hose to brake caliper (floating brake caliper)

M12

Nm

42

42

 Rear axle brake caliper

Number

Designation

Model 247
with code U54 (Compound-link axle)

Model 247
with code U55 (Multi-link axle)

BA42.10-P-1003-12X

Bolt, brake hose to brake caliper (floating brake caliper)

M12

Nm

42

42

 Brake lines

Number

Designation

Model 118

Model 177

BA42.10-P-1004-04Q

Retaining screw, brake line to brake hose

Nm

14

14

 Brake lines

Number

Designation

Model 247

BA42.10-P-1004-04Q

Retaining screw, brake line to brake hose

Nm

14