EDIT: On this later M104 engine you just put a 15 mm socket on the tensioner pulley and turn clockwise. Tension is released both from belt and owner. Remove fan shroud first.

Tensioner Belt discussion was here:here.
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I've finally gotten around to doing this. Problem now is loosening the belt via the tensioner. 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.

The fan shroud is pulled.

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).

Any help with this tensioner setup would be grand.