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Locate noises from the front axle - AR33.00-P-2000A

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MODEL ALL 

Example shown on model 204 

Fig 1: Noises From Front Axle Components - Shown On Model 204
G09976130Courtesy of MERCEDES-BENZ USA

Example shown on model 211 front axle 

Fig 2: Noises From Front Axle Components - Shown On Model 211
G09976131Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Attach clamp pliers with microphone (1) IMPORTANT Attach the clamp pliers as close as possible to suspect components.
For evaluation purposes (normal noise - defect noise) listen to the same components, e.g compare noise from left supporting ball joint with right supporting ball joint.
IMPORTANT Up to 6 clamp pliers with microphone can be attached.
NOTES Attach clamp pliers so that while driving the freedom of movement of chassis components is not impaired.
WARNING It is essential to check whether the clamp pliers impair the steering function. Risk of accident!
 
  STEELMAN ChassisEAR Ultrasonic leak detector and Noise diagnosis  
2 Fasten line (2) of clamp pliers with microphone (1) (arrows) IMPORTANT Fasten the lines with Velcro strip, cable ties or adhesive tape.
NOTES Route the lines so that while driving the freedom of movement of the chassis components is not impaired.
 
3 Guide line (2) of clamp pliers with microphone (1) into the interior IMPORTANT Route the lines so that contact with the road is ruled out.
NOTES Route lines so that damage by a door or window is ruled out.
 
4 Connect line (2) to the selection switch (3) IMPORTANT The lines and connectors on the selection switch are color coded.
Note the color assignment of components which are to be listened to.
 
5 Carry out road test for noise diagnosis WARNING Only carry out road test with a second person present.
The headphones must not be worn by the driver.
 
6 Locate defective components by listening to the microphone DANGER Reduce the volume before each channel change otherwise hearing can be damaged
If necessary: ↓
Replace faulty components.