Kestas, Unlike american cars, the threads on the bearing shaft of the mercedes are much finer and 1/3 turn is about the same as 1/8 turn on my US cars. I have used the 1/3 turn (120 degrees) on my bearings several times in the past and find it very satisfactory. For those of us who do not have the more sophisticated adjustment tools it works fine. You have to be sure that the bearings are packed well. Also, I would clean the allen bolt threads with some solvent and apply some blue lock tite, as I have had the experience of the bolts coming loose even when snugged well. If that happens, bye bye bearings. Regards.

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hlg