Originally Posted by onehundred80
I have investigated to see if it is possible to pull the covers of this unit, the answer is yes. But it looks a bit too much work for me just to polish it a bit more.
I found an article in BenzWorld on rebuilding a similar unit. They call their unit a Duo Valve, that seems a suitable name for it.
The valve appears about halfway through the article, it's a good read.
V12 Uber Alles, Rear AC System and Duovalve Diagnosis Rebuild in a W140 Mercedes Benz
Me either.
I have a distinct feeling those Torx-head "screws" are actually drive rivets. That would explain why they sheared for the fella'. I doubt that it is considered a serviceable piece.