Screwing in the rear brake caliper piston.

[SuffolkD at aol.com]

They look like these:
http://www.quattro123.com/200Brakes.htm (I know yours is a 90 sedan, check 
the photos for the rears)
There is a metalnerd.com tool and others which fit these "pins" / holes.
-Scott by BOSTON
> 
> I'm installing some new rear pads on my '88 80Q. The Bently shows  using a 
> socket head wrench and screwing in the piston to compress it. My piston  
> does 
> not have a such a socket, it does have two slots in the outer circumference  
> for 
> maybe some sort of a key.  Does this sound correct? If so, I will make  up a 
> key and push & turn it in.
> 
> Thanks in advance