Working on my fathers 98 e300 doing routine maintenance. Noticed the belt tensioner was cockeyed. Typical. On this car the tensioner was loose with the PO and he I believe used some lock tight and tightened it back down. The threads were somewhat stripped out. I was aware at some point it could become an issue. When I removed the bolt it was tight, not loose so I’m sure the tensioner is just worn out. When I go to replace it I don’t think I’m going to be able to crank down on it like normal. It appears the first half of the threads are stripped so it’s just grabbing with the back half. Think I should clean it up real good and used either red or blue locktite? What about JB welding it? What about running a tap down the hole to clean it up? Anybody know what size it would be or if that would even work? See photos and video below.
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