Remove/check/install front axle brake pads

AR42.10-D-1610TS

Remove/check/install front axle brake pads

26.03.2020

Model

907, 910

Modification notes

26.03.2020

Work procedure revised

The whole document

Shown on model 910

1

Brake linings

5

Guide pin

2

Brake caliper

6

Anti-rattle spring

3

Electrical connector

7

Caliper support

4

Dust cap

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 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

 Warning

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

 Warning

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

 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

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.Model 907
Model 910

AS00.00-Z-0017-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Brake fluid notes

AH42.50-P-0001-01A

Topical note

Notes on repairs to brake system

AH42.00-P-0003-01A



Remove

1

Clean area surrounding cap of brake fluid reservoir.

Assembly cleaner

*BR00.45-Z-1028-04A

2

Remove cap of brake fluid reservoir.



Check

3

Check fill level in brake fluid reservoir.


The fill level must not be above the maximum marking.
This prevents the brake fluid reservoir from overflowing when the brake pistons are pushed back.

If the fill level in brake fluid reservoir is too high,



extract brake fluid.

 Commercially available devices/tools
Extraction bellows

4

Remove each front wheel.

AR40.10-D-1100TS

5

Disconnect electrical connector (3) of brakepad wear sensor.

If installed on affected side of vehicle.

6

Use suitable tool to push back brake linings (1) slightly.

7

Remove dust cap (4).

8

Remove brake caliper (2) at lower attachment point.

 Model 910
To do so, unscrew guide pin (5), fold brake caliper (2) upwards and fix in place.

 Model 907
To do so, unscrew screw, fold brake caliper (2) upward and fix in place. Dispose of screw.

9

Remove brakepads (1) from brake caliper support (7).

10

Remove anti-rattle springs (6) from brake caliper support (7).



Check

11

Check brakepads (1) for damage and wear.



Assess condition of brake linings

AP42.10-D-4252TS

If the brakepads (1) are reused,



clean contact surfaces on carrier plates of brakepads (1).

Assembly cleaner

*BR00.45-Z-1028-04A

If a brakepad (1) is damaged or worn,



replace all brakepads (1) of front axle.

 Dispose of brakepads (1) as special waste. The local authorities may provide information regarding whether disposal is permitted via household-similar industrial refuse.

If the brakepads (1) are replaced,



also replace anti-rattle springs (6).

12

Check anti-rattle springs (6) for damage and wear.

If the anti-rattle springs (6) are to be reused,



clean anti-rattle springs (6).

Assembly cleaner

*BR00.45-Z-1028-04A

If the anti-rattle springs (6) are damaged or worn,



replace all anti-rattle springs (6) on affected brake caliper support (7).

13

Check brake disk for damage and wear.



Assess condition of brake disks

AP42.10-D-4256TS

If the brake disk is damaged or worn,



replace brake disks and brakepads (1) of front axle.

Remove/install front axle brake disk

AR42.10-D-0230TS

14

Push back brake pistons and check for ease of movement.

 Resetting device

*000589524300

If the fill level in brake fluid reservoir is too high,



extract excess brake fluid.

 Commercially available devices/tools
Extraction bellows

If a brake piston is sluggish,



replace brake caliper (2).

Remove/install front axle brake caliper

AR42.10-D-0070TS

15

Check brake caliper (2) for damage and leak tightness.

If brake caliper (2) is damaged or leaky or boot of a brake piston is damaged:



replace brake caliper (2).

Remove/install front axle brake caliper

AR42.10-D-0070TS

16

Check component parts of brake caliper guide for damage and wear.

If corresponding findings are present,



Replace affected components.

Remove/install front axle brake caliper guide

AR42.10-D-0401TS



Clean

17

Clean thread of guide pin (5).

Model 910

Assembly cleaner

*BR00.45-Z-1028-04A

18

Check guide pin (5) for damage.

Model 910

If damage is present,



Replace guide pin (5).



Install

19

Install anti-rattle springs (6) in the brake caliper support (7).

20

Install brakepads (1) in anti-rattle springs (6) on brake caliper support (7).

21

Install brake caliper (2).

 Model 910
To do so, screw in guide pin (5).

 Model 907
To do so, screw in new screw.

 Screw/guide pin, brake caliper to brake caliper support

*BA42.10-N-1004-10TS

22

Install dust cap (4).

23

Connect electrical connector (3) of brakepad wear sensor.

If installed on affected side of vehicle.

24

Mount front wheel.

AR40.10-D-1100TS

25

Fit brakepads (1).

Topical note

Notes on carrying out repair work in the vehicle interior

AH68.00-N-0001-01S

 To do so, operate brake pedal several times until brakepads (1) contact brake disks.
Firm resistance must be noticeable at the brake pedal.



Check

26

Check fill level in brake fluid reservoir.



Brake system - inspect fluid level

AP42.10-D-4210TS

If the fill level is incorrect,



correct fill level.



Brake fluids (DOT 4 plus)

BB00.40-P-0331-00A

 Commercially available devices/tools
Extraction bellows

27

Mount cap of brake fluid reservoir.

28

Perform brake test.



Brake test

AP42.00-D-4290TS

 Front axle brake caliper

Number

Designation

Model 907

Model 910

BA42.10-N-1004-10TS

Screw/guide pin, brake caliper to brake caliper support

Nm

34

34

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01