I find it frustrating not to be able to quite see what you're looking at. The best manuals I ever used was the Allison Transmission manuals for the very large vehicles like buses and trucks, etc. Unfortunately MB does not want you to be able to fix your own car. What are you to do when the information is not readily available or it is so expensive? I signed up for the alldatadiy.com recomended on this site recently and it" aint bad"! $25 for a year is very reasonable. Particularly impressed that they have info on rebuilding auto trans. Same problem though, can't see the pictures very well. GM has good manuals and they are cheap, but who wants to own one of those cars? I'd rather ride a bike!
Woody