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Old 09-26-2000, 12:35 AM
trapper
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I have noticed that when travelling at speeds of 70-90 mph, after maintaining speed for about 10 seconds, a faint humming sound begins which increases to a very audible level (easily noticable above wind noise, a/c, etc). When the brakes are applied, the noise stops. One MB tech said that the emergency brake shoes could be breaking down, and in turn create a harmonic resonance from the particles. Any ideas????
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