I just watched my mechanic change this part in my 190d 2.2 this past weekend. He put a vacuum gauge on it first to see if it holds vacuum. It didn't. Then he raised the car, and then removed the rear transmission mount and unbolted the flex disk. He may have removed the shift rod; couldn't tell. Then he pried it down, and put a 2x4 sideways between the car and transmission to hold it in place. This provided a lot of room in which to remove the part.

He replaced it with one of the same color.

John Cacavas
Los Angeles.