Question about 1990 Mercedes-Benz 300 Diesel
Do I need special tool for idler pulley
Your '90 Benz has a belt tensioner that is automatic. You just insert the correct tool to ease the tensioner pulley, (The tool is inserted into the bracket for the tensioner pulley), to the left as you're facing the car. Then slip your serpentine belt off. Reinstallation is a reversal of this process. (I believe it's to the left, don't quote me on that)
The radiator support in front, should have a diagram of how the serpentine belt goes on the pulleys.
If your serpentine belt slips, then the belt tensioner pulley assembly is bad, needs to be replaced, or the serpentine belt itself is worn out.
Posted on Apr 19, 2009
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Posted on Jan 02, 2017
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