I was searching on the net and found this article for doing MB brakes. This applies to DIY pad/rotor replacement '00-'03 ML430/ML55/ML500. But I think it's really cool how this was put together to show how things should look once taken apart. Check it out here:
http://www.petefagerlin.com/ML/brakes.htm
http://www.petefagerlin.com/ML/brakes.htm