My dad had to replace his passenger side rear wheel bearing two years ago on vacation in the New England area. This was on his 1978 17 ft. with the 3/4 duallys and about 90,000 miles. He was able to replace the bearing, but he had to have the seal pressed on by machine. He was able to do the rest in a motel parking lot. Luckily dad is a mechanic and it only cost a day worth of vacation. We were lucky we knew it was going and we were able to get to a decent sized with part stores.
Grandpa replace the both of his bearing last summer on his 1986 21ft. 100,000 miles. One side was going so he replaced both. He has the bolted on duallys on his camper.
Fortunatly my 1986 had the rear end replaced with a new 1 ton before I purchased it. My camper has about 85,000 miles on it so I shouldn't have to worry about it for a while.
Nate
