95 E320 M104 Tensioner
 

I have spent hours searching this forum and the net and no luck. This was part of another thread but I've broken it out here in a blatant attempt to attract more attention and hopefully an answer.

How do I adjust the tensioner so that I can remove and replace the serpentine belt?

I've read all the posts I could find and cannot for the life of me relate what I've read to what I see in my engine.

Re: other threads: I don't see any nuts that are pointing up, I see no keyed allen bolt on a pulley. None of the pulleys are 19 mm hex heads.

This is a very late 95 E320 (May 95) engine # 12 090072

Pulley Diagram mine is the lower right.

Atop the tensioning pulley is nothing much. A combination bracket basically. It DOES NOT look like this:

Tensioner

Another post mentions just tightening the tensioner pulley bolt until it moves in, but that's on a 96 104.

I think I'm missing something basic - it's been hours of staring at the engine and checking posts here. I'm not a total idiot (usually). The fan shroud is pulled so I do have a decent view.

I've attached photos of the front of the engine.

Any help with this tensioner setup would be grand.

<<This is a very late 95 E320 (May 95) engine # 12 090072
>>

124.032 tensioner was changed after # 12-072236
It is self adjusting and there is no pointer..

Thank you. So what is the recommended way of getting the serpentine belt on and off with this setup (I'm replacing the air pump)?

Fantastic - you've made my day.

So trivial and easy!!! Aaaaaagh!

Just put a 15 mm socket on the tensioner pulley and turn clockwise.