I had it happen to me on a Class C Motor Home (Ford Chassis) quite a few years ago. Won't go into the complexities of why it happened but in trying to figure how to tighten up those few thousandths that were worn, I decided to plug the hole so that no sand could get into the rear end (NOT good!), and sand blasted the inside of the housing where the bearing rides. I think it's called Silica 30 (not certain), but it's course enough that it put a sand blasted finish that tightened the hole perfectly! The bearing fit nice and snug on both sides. It only takes a very few thousandths for the bearing to fit loose, maybe 2 or 3 thousandths, 4 at the most. If you have any concern, use a Med. temp Lock-Tite. If you have to get the bearing out later (may very well have to if you have the truck long enough), just heat the outside of the housing up a little, it should come right out with a bearing puller. I wouldn't think of replacing the housing for that. You DO NOT want the bearing to spin in the housing (which sounds like what it did) because it would destroy the housing, bearing and axle. It definitely shouldn't they way I described.
Last edited by code58; 03-05-2010 at 04:38 AM.