Adjust parking brake

AR42.20-S-0540EA

Adjust parking brake

19.12.2017

Model

447.6/7, 448.7

Modification notes

29.11.2017

Method extended

Operation steps 4, 8

1

Cable slack adjuster adjusting nut

61

Brake disk

105a

Thumbwheel

 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

Topical note

Special instructions for lifting and supporting vehicle

AH00.60-N-0100-01A



Remove

1

Release parking brake

2

Raise vehicle

AR00.60-S-1000E

3.1

Remove one wheel bolt from each rear wheel

Model 447.6/7
with code RS3 (Steel rims 6.5 J x 16)
Model 447.6/7
with code RS7 (Steel wheels 6.5 J x 17)

3.2

Remove rear road wheels

Model 447.6/7
except code RS3 (Steel rims 6.5 J x 16)
except code RS7 (43.2 cm (17-inch) steel wheels)
Model 448.7

AR40.10-S-1100E

4

Loosen counternut of cable slack adjuster adjusting nut (1) a few turns

If installed.

5

Loosen cable slack adjuster adjusting nut (1)

Adjust

6

Adjust parking brake

 Turn the adjustment wheel (105a) until the wheel or the brake disk (61) locks. Then turn the adjustment wheel (105a) by 9 teeth in the opposite direction. The wheel freewheel must be guaranteed in the process.

If necessary



Turn the wheel or brake disk (61) slightly until the adjustment wheel (105a) is accessible through the threaded hole.

7

Adjust rear brake cables

AR42.20-S-0540-01E



000 588 05 21 00 Roller brake test stand

WS42.00-P-0006B

Force on parking brake pedal at first notch

*BE42.20-N-1003-01B

8

Retighten counternut of cable slack adjuster adjusting nut (1)

If installed.



Install

9.1

Screw in wheel bolts and tighten

Model 447.6/7
with code RS3 (Steel rims 6.5 J x 16)
Model 447.6/7
with code RS7 (Steel wheels 6.5 J x 17)

 Steel rim wheel bolt

*BA40.10-N-1001-01H

9.2

Fit rear wheels

Model 447.6/7
except code RS3 (Steel rims 6.5 J x 16)
except code RS7 (Steel wheels 6.5 J x 17)
Model 448.7

AR40.10-S-1100E



Check

10

Check that parking brake is functioning correctly



AP42.00-S-4290E

Depending on findings



Repeat adjustment procedure.

Check values for parking brake

Number

Designation

Model 447, 448

BE42.20-N-1003-01B

Force on parking brake pedal at first notch

N

100...120

 Wheels

Number

Designation

Model 447, 448

BA40.10-N-1001-01H

Steel rim wheel bolt

Nm

200