Adjust parking brake

AR42.20-D-0540TS

Adjust parking brake

09.01.2020

Model

907, 910

except code B25 (Electric parking brake)

4

Brake cables

30

Adjusting nut

31

Brake compensator lever

33

Jam nut

34

Nuts

 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

 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

Preparation

 Danger

Risk of death caused by limbs being caught or crushed by rotating parts when performing tests on the brake test stand

Never leave the vehicle unattended on the rollers except in an emergency. Ensure that no one is under the vehicle or near rotating parts during testing. In case of emergency, use the EMERGENCY OFF switch to shut down test stand.

AS42.00-Z-0001-01A

1

Bed in the parking brake before the adjustment procedure.



000 588 05 21 00 Roller brake test stand

WS42.00-P-0006B



000 588 06 21 00 Roller brake test stand

WS42.00-N-0013B


Do not thermally overload the parking brake.
Otherwise, the parking brake may be damaged.

 Bed in parking brake with a brake force of approx. 1000 N for a maximum of 60 s on the brake test stand.
Alternatively, accelerate vehicle to 60 km/h and apply parking brake lever lightly for approx. 8 s.



Remove

2

Raise vehicle.

AR00.60-D-1000-04TS

Topical note

Special instructions for lifting and supporting vehicle

AH00.60-N-0100-01TS

3.1

Remove one wheel bolt from each rear wheel.

Model 907 except code IT5 (5.0 tons), model 910
For vehicle with steel wheels.

3.2

Remove rear wheels.

Model 907 except code IT5 (5.0 tons), model 910
For vehicles with light alloy wheels.

AR40.10-D-1100TS

Adjust

4

Release counternut (33) of adjusting nut (30) on brake compensator lever (31) by a few turns.

5

Release adjusting nut (30).

6

Release nuts (34) and slide brake compensator lever (31) up to end stop in direction of travel.

7

Tighten nuts (34).

 Screw/nut, brake compensator lever to frame

*BA42.20-N-1002-01TS

 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

8

Adjust basic clearance for parking brake.

Model 907 except code IT5 (5.0 tons), model 910

AR42.20-D-0540-02TS

Model 907 with code IT5 (5.0 tons)

AR42.20-D-0540-02TSB

 Model 907 with code IT5 (5.0 tons)Brake adjuster adjustment screw

*BA42.20-N-1003-01TS

 Model 907 with code IT5 (5.0 tons)Friction value of brake adjuster adjustment screw

*BA42.20-N-1004-01TS



Install

9.1

Screw in and tighten wheel bolts.

Model 907 except code IT5 (5.0 tons), model 910
Vehicle with steel wheels.

 Model 907, 910Wheel bolt

*BA40.10-N-1001-01TS

9.2

Mount rear wheels.

Model 907 except code IT5 (5.0 tons), model 910
Vehicle with light alloy wheels.

AR40.10-D-1100TS

 Model 907, 910Wheel bolt

*BA40.10-N-1001-01TS

Adjust

10

Operate parking brake lever several times with medium force, then release and operate up to 3rd notch.

11

Adjust rear brake cables (4).

 To do so, screw on adjusting nut (30) on brake compensator lever (31) far enough until the rear wheels can still just be turned by hand in the direction of travel.

12

Check rear wheels for freedom of movement.

 Operate and release parking brake lever 3 times in row. The rear wheels must turn freely and without grinding the brake.

If rear wheels do not move freely,



release adjusting nut (30) and repeat adjustment procedure as of operation step 10.

13

Tighten counternut (33).



Check

14

Check for correct function of parking brake.



Brake test

AP42.00-D-4290TS

If corresponding findings are present,



Repeat complete adjustment procedure.

 Wheels

Number

Designation

Model 907, 910

BA40.10-N-1001-01TS

Wheel bolt

Steel rim

Nm

240

Light alloy rim

Nm

180

 Parking brake

Number

Designation

Model 907
with code IT5 (5.0 tonner)
except code B25 (Electric parking brake)

Model 907 except code IT5 (5.0 tons), model 910

BA42.20-N-1002-01TS

Screw/nut, brake compensator lever to frame

Nm

42

42

 Parking brake

Number

Designation

Model 907
with code IT5 (5.0 tonner)
except code B25 (Electric parking brake)

BA42.20-N-1003-01TS

Brake adjuster adjustment screw

Nm

10

 Parking brake

Number

Designation

Model 907
with code IT5 (5.0 tonner)
except code B25 (Electric parking brake)

BA42.20-N-1004-01TS

Friction value of brake adjuster adjustment screw

Nm

 5