Gear whine in rear end - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 08-01-2010, 06:43 AM Thread Starter
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Gear whine in rear end

Among some compression issues that will ultimately lead me to an engine rebuild or replacement this winter, I am noticing a gear whine in the rear end. I am happy to fix, replace bearings, new axle shafts etc..., but I am not sure what is actually causing the problem. My local Mercedes mechanic is telling me it may be the rear diff gears are not mating properly due to wear causing the problem, but I do not know what that means or how to fix it.
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post #2 of 4 (permalink) Old 08-01-2010, 01:27 PM
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Pull the cover and look at the wear pattern.
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post #3 of 4 (permalink) Old 08-31-2010, 11:15 PM
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I have the same whine and obviously louder at high rpm's. Let me know what you found out. I have a charging issue that I want to deal with before I get to this problem. In a couple of weeks maybe I can be of some help.
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post #4 of 4 (permalink) Old 09-02-2010, 10:55 AM
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First check the oil, and best replace the oil in the diff.
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