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Old 06-07-2013, 07:39 PM
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Join Date: May 2013
Location: Just outside NYC
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560SL::humming and grinding noise from rear

Just took delivery of an '87 560SL and i notice a humming and grinding noise coming from the rear end. It happens at very low speed, say 20 MPH, where it sounds like a grinding, and then as I accelerate, the humming gets higher pitched.

would love to hear any thoughts

thanks in advance
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Old 06-08-2013, 09:16 AM
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Join Date: Mar 2003
Location: Central Ky
Posts: 5,422
check flex disc, if ok get both back wheels off ground and rotate , may be parking brake hanging up , or caliper sticking, less likely and more severe, rear diff , or rear bearings
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Old 06-08-2013, 09:16 AM
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