driveline vibration

[DThibault]

I've got a 93 W350, manual transmission just back on the road after a recab job. I also have a vibration that is haunting me and not the evident u joint etc. It happens in any gear I can get 60 mph. It starts about 58 mph and leaves about 62 mph. I checked the ujoints as I said and I can shake a little movement out of the driveshaft slip joint, but not excessive. Any ideas. Thanks.

 

[JLEONARD]

I had a similar annoying vibration at 65 in a narrow speed range a couple of times.

One time it was a very slightly bent rim (stock steel).

Another time it was a poorly seated rim because the chamfers on the holes were worn out and the nuts weren't holding the rim properly in all 8 positions (causing the rim to wobble slightly).

Hope this helps.

 

[dpuckett]

I was thinking tire/ wheel balance, too.



Daniel