Larry is correct. Let the machine shop measure each piston and bore each hole to fit each piston. I will number each piston and have the machine shop fit them accordingly.They may vary slightly in size.There is only 0.002in. difference in the diameter of the cylinder and the piston.That's only 0.001in. on a side, so it is a little bit of importance to have each piston fit to a specific hole.
Do you have a good torque wrench? You will need one, and do you know what the manual means when it speaks of "angle of rotation". I want to help you in any way I can.Just let us know what you need.
Bill Lewallen Lexington,Ky.
I have owned and rebuilt too many Mercedes to list here.
Lets just say I've owned a few.