I solved the problem of the over heating wheel at last. I seems the small shaft that the caliper slides on was jammed. I am not sure how it got jammed because as soon as I freed it, it slid very good. It was still well lubricated so why did it jam? There was still quite a bit of the pads left but worn quite a bit. After putting on the new pads all was good. I was not happy to go on long trips without checking out everything so we pulled the pistons out of the calipers and put in new kits but the old o rings seemed to still be good after 180,000klm. The bearings are also in good condition. At the same time I put on $400 Monroe Gas-Magnum 4x4 shock absorbers on the rear as the rear leans over quite a bit being a Winnebago on the rear. It has beefed up spring and air bags but I do not think they are all the much better than the 2007 Toyota shock absorbers I took out. When pulling out the shock absorbers slowly and very quickly in and out they did not seem to be much improved on the original ones. I would have thought they would have been a bit stiffer and I know I should really do the front ones also. Everyone seem to say how good those shock absorbers are but I guess they are not fully loaded all the time with a Winnebago on the back of the Hilux.