How did you take the 2 pieces on the left apart in your pic? I took my T stat out on my spare housing and those 2 pieces won't separate. It looks like they are held together with a black rubber seal. Those 2 pieces make up the T stat assembly (I think), item 86, and is what you get if you buy a new one from Mercedes, which is what I plan on doing. I'll post pics of mine later.
