ar4200p2000a

Locate noises from the brake

Type ar · topic 42.00 · version 0103 · 2018-05-16

Applies to: Model all (4xWD, CAR)

Where it sits

Function group 2 Chassis › 42 Brakes - hydraulic and mechanical systems › 42.00 General — Series 900 (models 9**) · Series 902 (models 9**) · Series 904 (models 918, 919, 924, 925, 938, 943, 957) · Series 906 (models 917, 918, 924, 953)

EinPAS 21 Brakes/vacuum system/compressed-air system › 21.15 Service brake/vacuum system › 21.15.5 Brake system, complete — Series 900 (models 9**) · Series 902 (models 9**) · Series 904 (models 918, 919, 924, 925, 938, 943, 957) · Series 906 (models 917, 918, 924, 953)

Also applies to engines/gearboxes: 139 ***, 254 ***, 256 ***, 272 ***, 276 ***, 282 ***, 457 9**, 541 9**, 542 9**, 608 ***, 700 4**, 700 420, 700 421, 700 422, 700 423, 715 3**, 715 5**, 722 6**, 722 9**, 724 ***, 724 0**, 724 033, 724 044, 724 045, 724 1**, 724 103, 724 114, 724 115, 724 120, 725 ***, 725 0**, 725 035, 725 037, 725 038, 725 085, 725 1**, 739 390, 739 391, 739 395, 739 396, 739 397, 739 398, 739 399, 740 698, 743 3**, 743 4**, 743 498, 746 971, 924 9**, 924 910, 925 9**, 926 9**

AR42.00-P-2000A

Locate noises from the brake

26.04.2018

Model

all (4xWD, CAR)

Locate noises from the brake

1

Locking pliers with microphone

2

Line

P42.00-2140-11

Locate noises from the brake

P33.00-2093-07

2

Line

3

Selection switch

Remove/install

1

Install locking pliers with microphone (1).


Check steering function with installed locking pliers with microphone (1).
There is a risk of accident.


Install locking pliers with microphone (1) such that the freedom of movement of the suspension components is not impaired in the operating status.
Otherwise the locking pliers with microphone will become damaged (1).

Install locking pliers with microphone (1) as near to the suspected component parts as possible.

Up to 6 locking pliers with microphone (1) can be installed.

2

Fasten the lines (2) of the locking pliers with microphone (1).


Route the lines (2) such that the freedom of movement of the suspension components is not impaired in the operating status.
Otherwise there is a risk if accident.

Fasten the lines (2) with Velcro strip, cable ties or tape.

3

Guide the lines (2) of the locking pliers with microphone (1) into the vehicle interior.


Make sure the lines are correctly installed.
So that damage from the door or window is ruled out.

Route the lines (2) so that contact with the road is ruled out.

4

Connect the lines (2) to the changeover switch (3).

The lines (2) and connections at the changeover switch (3) are color-coded.
Note assignment of component parts to be monitored relative to color.

5

Carry out road test for noise diagnosis.


Only carry out road test with a second person.
The driver may not wear the headphones.

6

Localize the defective component parts by listening into the microphones.


Reduce volume before each channel change.
Otherwise hearing damage can occur.

If it leads to complaints.

Replace defective components parts.