xusmnimij,
I removed my calipers a couple of years ago to paint them. Many just tape off the surrounding parts. I wasn't in a hurry so I took them off and worked on cleaning, painting and applying decals over a couple of weekends. Once I reinstalled the calipers I just replaced the fluid using a power bleeder.
http://www.performanceproducts4benz.com/productpage.aspx?pid=105048&cid=7&sid=490
Your car looks great. What type of front bumper cover is that? Can you post more pictures?
ddb