Remove/check/install rear axle brake pads

AR42.10-D-1710TS

Remove/check/install rear axle brake pads

06.03.2020

Model

907, 910

Modification notes

07.06.2019

Work procedure revised, illustration and method adapted

The whole document

Shown on model 910 with code B25 (Electric parking brake)

1

Brake linings

4

Dust cap

6

Anti-rattle spring

2

Brake caliper

5

Guide pin

7

Caliper support

3

Electrical connector

 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

Topical note

Notes on carrying out repair work in the vehicle interior

AH68.00-N-0001-01S



Remove

1

Clean area surrounding cap of brake fluid reservoir.

Assembly cleaner

*BR00.45-Z-1028-04A

2

Remove cap of brake fluid reservoir.

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

Move brakepads (1) to assembly position.

Model 907, 910
with code B25 (Electric parking brake)

AR42.10-D-1710-01TS


Do not operate the service brake while "Move to assembly position" is shown.
Otherwise, the spindle of the brake caliper (2) will be damaged.

5

Remove respective rear wheel.

AR40.10-D-1100TS

6

Disconnect electrical connector (3) of brakepad wear sensor.

If installed on affected side of vehicle.

7

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

Model 907, 910
except code B25 (Electric parking brake)

8

Remove dust cap (4).

9

Remove brake caliper (2) at lower attachment point.

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

10

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

11

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



Check

12

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) on rear axle.

 Dispose of brakepads (1) as special waste. The local authorities can provide information regarding whether disposal is also permitted as industrial waste similar to domestic waste.

If the brakepads (1) are replaced,



also replace anti-rattle springs (6).

13

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).

14

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 the rear axle.

Remove/install rear axle brake disk

AR42.10-D-0240TS

15

Push back existing brake pistons and check for ease of movement.

Model 907, 910
except code B25 (Electric parking brake)

 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 rear-axle brake caliper

AR42.10-D-0080TS

16

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

If the brake caliper (2) is damaged or leaking or a boot of a brake piston is damaged,



replace brake caliper (2).

Remove/install rear-axle brake caliper

AR42.10-D-0080TS

17

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

If corresponding findings are present,



Replace affected components.

Remove/install rear axle brake caliper guide

AR42.10-D-0402TS



Install

18

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

19

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

20

Install brake caliper (2).

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

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

*BA42.10-N-1006-12TS

21

Install dust cap (4).

22

Connect electrical connector (3) of brakepad wear sensor.

If installed on affected side of vehicle.

23

Attach rear wheel.

AR40.10-D-1100TS

24

Deactivate brakepad change mode.

Model 907, 910
with code B25 (Electric parking brake)

AR42.10-D-1710-01TS


Whilst doing so, do not actuate service brake.
Otherwise, the spindle of the brake caliper (2) will be damaged.

25

Fit brakepads (1).

 For this, depress brake pedal several times until brakepads (1) contact brake disks.
Firm resistance should 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

 Rear axle brake caliper

Number

Designation

Model 907
except code IT5 (5.0 tonner)

Model 907
with code IT5 (5.0 tonner)

BA42.10-N-1006-12TS

Screw/guide pin, brake caliper to brake caliper support

Nm

34

34

 Rear axle brake caliper

Number

Designation

Model 910

BA42.10-N-1006-12TS

Screw/guide pin, brake caliper to brake caliper support

Nm

34

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01