One problem related to front suspension wheel bearing has been reported for the 2006 Ford F-650. The most recently reported issues are listed below.
We bought 2- f 650 roll backs and they both have been in shop 3 times for wheel bearings to be replaced, tires wearing bad spots in them because of this, carrier bearing went out, and now one of them the axle broke and is in shop and it only has 34000 miles on it. It has had a bad vibration in them since we bought them, that is what we took them to shop for.