Charles ;

That's a good question you posed ~ every Mercedes I've bought (and most I've serviced) have bad outer wheel bearings .

However , I have also adjustem the new bearings by feel and so far , not one has failed .

If you know how to do it , no special tool is necessary .

The main thing is to not pre-load the bearing .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better