I just replaced my center bearing assembly last week. I had no idea how SHOT it was!
Had symptoms just as you describe.
Nice and smooth now. Less than 30$ in parts, about 1Hr worth of your time.

Are parts really that cheap??
 

You did say less than thirty cents right? That seems to be the recurring theme I keep hearing here. However, here in Canada (or at least Metro Van) I've been looking at the local junkyards, and no-one even has mercs! :eek: The only pick-n-pull with mercs is run by a guy who obviously hasn't heard the mantra that Merc parts are cheap. He wanted $100 for a gauge cluster housing :mad: I won't even dare ask him how much the emblem and badge costs :(

Anyway, for the totally uninitiated (moi) :o could you please tell me what parts are required for replacing the centre bearing assembly thanks!

http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=28D0KHXF229B0NRNCK&year=1984&make=MB&model=300-DT-001&category=K&part=Driveshaft+Support
http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=28D0KHXF229B0NRNCK&year=1984&make=MB&model=300-DT-001&category=K&part=Driveshaft+Support+Brg.
http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=28D0KHXF229B0NRNCK&year=1984&make=MB&model=300-DT-001&category=K&part=Drvsft.+Support+Boot

And, two of these, if you want to do a complete job:

http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=28D0KHXF229B0NRNCK&year=1984&make=MB&model=300-DT-001&category=K&part=Drive+Shaft+Flex+Joint

I must admit, since buying the car I have not had the wheels balanced - and now, I certainly will have it done. It can't hurt, after all, and might be a cheap (and simple) solution that doesn't require me to get greasy!

I think I want to replace my center bearing just on general principle now though - looking at the service records, I am quite certain I have the original bearing, so it may not be looking too hot these days.