OUGH!! That sounds mighty complicated. I have read some threads on here and, depending on the thread, it sounds real easy or very complicated. But judging from your answer it is not really a DIY job.
I thought that I could adjust the tighening untill there is 0 play and then release a bit for tolerance and it should work. But I assume that I am mistaken here and better go for some new bearings and have them installed at the Benz shop.
Thanks and greets,