Remove/check/install front axle brake pads

AR42.10-P-1600TX

Remove/check/install front axle brake pads

4.5.11

17.3.11

Perform brake test on dynamometer, added

Operation step 17

 

Remove/install

 Danger!

Risk of injury caused by body parts being jammed or crushed. Risk of injury to skin and eyes caused by brake fluid spraying out at high pressure when working on the SBC brake system

Deactivate SBC brake system using STAR DIAGNOSIS.

AS42.46-Z-0001-01A

 Danger!

Risk of poisoning caused by swallowing brake fluid. Risk of injury caused by brake fluid coming into contact with skin and eyes.

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

 Danger!

Risk of injury to skin and eyes caused by handling hot or glowing objects.

Wear safety gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A



Notes on repairs to brake system

AH42.00-P-0003-01A



Brake fluid notes

AH42.50-P-0001-01A



Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

1

Unscrew the cap on the brake fluid expansion reservoir and suction off some brake fluid

 In order to prevent the expansion reservoir overflowing when pressing back the brake pistons.



*BA42.50-P-1001-01D

2

Deactivate SBC brake system using STAR DIAGNOSIS.

Vehicles with Sensotronic Brake Control (SBC)

 The following steps should be run through in STAR DIAGNOSIS:

Select menu item "SBC Sensotronic Brake Control"/"Deactivate 'SBC' system".

Then process all the individual steps from top to bottom.

3

Remove the front wheels

Remove/install wheels, rotate if necessary

AP40.10-P-4050TX

4

Separate brake pad contact sensor connector (S10/1x1, S10/2x1)

5

Detach brake pad contact sensor connector (S10/1x1, S10/2x1) from fixed brake caliper (31a)

With 6-piston and 8-piston fixed brake caliper (31a)



*BA42.10-P-1003-10B

6

Drive out retaining pins (41) using punch and remove retaining springs (31d)

 Installation: Knock retaining pins (41) all the way in. Pay attention to correct seat of retaining springs (31d).

7

Remove bolt (30) and remove support of retaining spring (33)

With 6-piston fixed brake caliper (31a)



*BA42.10-P-1004-10B

8

Pull brake pads (43) out of fixed caliper (31a)

 With 4-piston fixed brake caliper (31a): In order to avoid damage, insert a wedge between the  lever (034) and fixed brake caliper (31a)  when pressing out the brake pads (43).

 Brake pads (43) are to be disposed of as special waste. The local authorities can provide information regarding whether disposal is also permitted as industrial waste similar to domestic waste.

 Installation: Only the brake pads (43) approved by Mercedes-Benz may be built-in as a set. With front axle brake pads (43) with marking (arrow) on the plate (43a) or brake pad (43), this must point in the direction of rotation of the wheel.



*123589133300



*601589076300

9

Pull brake pad contact sensor (S10/1, S10/2) out of the pad backing plate of the brake pads (43)

 Installation: Replace defective contact sensor (S10/1, S10/2).



Notes on installing brake wear indicator contact sensors

AH42.10-P-0003-01A



Checking

10

Check brake pad thickness and brake disks

 Only replace brake pads (43) and brake disks in complete sets if necessary.

Check brake lining thickness

AP42.10-P-4253A

Inspect condition of brake disks

AP42.10-P-4258TX

11

Check fixed brake caliper (31a) for leaktightness and dust boots of brake pistons for damage and correct seating

 If necessary: 

Install new fixed brake caliper (31a).

AR42.10-P-0070TX

12

Turn back brake piston in pairs using  pusher tool

 Secure the remaining pairs of brake pistons (31a) beforehand using  wedges to prevent them from falling out. If the brake pads (43) of several brake calipers are removed, their brake pistons must also be secured to prevent them from falling out.

  Do not fit pusher tool on the brake disk but push back the opposite brake pistons simultaneously. If the brake piston is difficult to move:



Install new fixed brake caliper (31a).

AR42.10-P-0070TX



*000589524300



*601589076300

13

Coat brake paste

Except model 219.376/377

AR42.10-P-0161-01B

 Only use the brake paste listed in the linked description and only coat this on the specified points otherwise noise complaints or damage to the brake system may occur

MB brake paste Molykote (copper colored)

*BR00.45-Z-1057-06A

14

Install in the reverse order

15.1

Activate SBC brake system using STAR DIAGNOSIS

Vehicles with Sensotronic Brake Control (SBC)

 The following steps should be run through in STAR DIAGNOSIS:

Select the menu item "SBC Sensotronic Brake Control"/"Initial startup after repair"/"Remove/install brake pads".

Then process all the individual steps from top to bottom.

 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 engine, actuate brake pedal several times until the pressure is built up and maintained in the brake system.

AS42.50-Z-0002-01A

15.2

Operate the brake pedal several times until the brake pads (43) contact the brake disks

Vehicles with Adaptive Brake (ABR)

 Firm resistance should be noticeable at the brake pedal.

16

Check fluid level in brake fluid reservoir, and correct if necessary.

Brake system - inspect fluid level

AP42.10-P-4210TX

17

Carry out brake test on the test stand

AP42.00-P-4290BA

Number

Designation

Model
219.372/376/377

Model
219.322/354/356/
357/375

BA42.10-P-1003-10B

Bolt, brake pad contact sensor to brake caliper

Nm

8

8

BA42.10-P-1004-10B

Bolt, anti-rattle spring support to brake caliper

Nm

30

-

Number

Designation

Model
219

BA42.50-P-1001-01D

Cap to brake fluid expansion reservoir

Nm

2

Number

Designation

Order number

BR00.45-Z-1057-06A

MB brake paste Molykote (copper colored)

A 001 989 87 51