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Body and Frame: Testing and Inspection
Noise, localizing981 4108 Chassis ear
981 4108 Chassis Ear Read the manual that is supplied with the instrument.
Position the microphone at the location where the noise is suspected to originate. Attach the transmitters securely.
Drive the vehicle, listen to one duct at a time. Note where the noise is most clear.
Move one or more of the microphones to successively encircle the noise.
