So, I relented to peer pressure and sprayed WD40 on the belt, and yes it did work! Until a few miles down the road from Kerby's then it started up again. I think that was his plan all along. That was two weeks ago and it's been getting worse each day. Sandy decided she wanted to alter our plans and go into Canada for a few days, so I had to get this thing fixed!
I drug out the blue prints for the coach, Winnebago is great for blue prints, you can download the whole set, and I noticed an access hatch right above the fan area. So that night I unscrewed everything and checked it out. Piece of cake! The next morning, after I dreamt how to do it, I started into my new experience as a Diesel Mechanic. It wasn't too bad! I had to borrow a half inch ratchet from a fellow camper to crank the belt tensioner back, but other than that it was OK. It took us an hour, with Sandy on top of the engine and me below (I could say something here......). After a shower, off to Canada we go!