Hey guys! My belt tensioner and belt tension adjustment need to be changed on my 1991 500sl. Pls if anyone has step by step instruction on how to replace both the tensioner and tension adj. I be very grateful…..Thanks, mbguy1944.
I'm not sure what you are talking about. The belt tensioner is an assembly. There is no adjustment. It either works or it doesn't. If your belt is relatively new, but is slipping, you need a NEW tensioner. Sometimes you can get way with just replacing the idler wheel on the tensioner, but I recommend biting the bullet and replacing the entire unit.
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