I have a 2004 Chrysler crossfire base model and replacing the serpentine belt. A little nut on the tensioner snapped off before I can get the belt on. I cannot find a diagram or a picture for the life of me on how to remove the tensioner pulley. Can someone anyone in here please help me. I am not a mechanic by any means, but I am mechanically inclined, but for some reason, this is way harder than it should be.

 

Is this what you snapped off?

 

Yes that is what snapped off

 

I wonder if you could use a chain wrench to lift the tensioner? Then you could get the pin in it, and replace it.
Like this one: