Originally Posted by mach4

If the customer is coming to you to do this job, and you're asking these kinds of questions, he would be well advised to look elsewhere for this work to be done.

Sorry to be curt, but you've obviously never worked with Mercedes diesels much, have not done even a cursory search of the wealth of information available on the forums and come in with your first post asking everyone to spoon feed you with information that is for the most part readily available with just a little bit of effort.