Thanks for all of the replies. I called 3 different truck service centers in the Bay Area near San Jose and was told by all of them that they would not work on any RVs and knew of now truck shop here that would. I tried to find out why, since this made no sense to me, but failed to convince any of them.
Finally I called 3 different RV shops and got bids. One told me that without seeing the seals which vary widely from vehicle to vehicle they could not give a firm bid. Basically I was offered prices from $320(for 4 wheels) to $700 for 2 wheels from these 3 shops. I went to the local Camping World only to find out that their $320 bid was for a trailer and not an RV (despite having worked on my rig before an having Itasca Suncruiser written on my bid). They sent me to the shop that does their truck chassis work. This shop didn't look like much but they were very knowledgeable. They bid $500 incl tax for replacing seals on my front wheels, estimating 3 hrs of shop work.
One very upsetting thing to me was that after removing the cap on one front wheel they showed me that my wheels did not use high temp lubricant, but rather I had a type that took a type of oil that bathes the bearings and axle, so the first RV dealer clearly ripped me off for doing a procedure that did not apply to my wheels. Clearly they had done nothing at all for the $293 that they charged me. Needless to say, I'm furious.
