Our M.H. has been in the shop for the last week. During our last outing, the front calipers both stuck again. First the R.H. side, then the left. pulled like crazy both times they did not release properly. We had both calipers replaced two years ago almost to the day and here we are again, all new parts. This time, the mechanic started at the brake pedal and worked his way out to the wheels to see why they acted up and only sporadically. He found; Master cylinder shot due to gummed up "O" rings and various rubber parts, Hydraulic power booster leaking every where and leaking fluid back into the Master cylinder, Not worth trying to rebuild either part. Front calipers ruined due to massive overheating. All 4 wheels brake lining glazed and starting to flake off at the edges. Over heat sensor fried on the right front caliper and wires melted together. Did not show a problem with a dash board lite or icon, but did show a code when scanned with a gauge. Apparently two yrs ago, the other shop did not trace back to see why the brakes would not release. They just figured there was rust on the piston and it was catching on the edge and could not return into the caliper properly. While in the shop, I had the mechanic run a charge line to the rear so I can charge the toad as the Honda battery looses a lot of juice during a day on the road. He did an excellent job on the line. I was going to just do it myself, but he has a much better place to work on it than I do.
If anyone else with a Ford E450 chassis (Mine is a 2004 with a 2005 Winnebago Aspect bod) has caliper hang up problems, I would suggest starting with Master Cylinder and Power Booster. They are expensive to replace, but a mechanic just guessing the calipers are to blame is the wrong way to go. I drive my MH every two to three weeks when I am not out camping, but try to go somewhere local (withing 150 miles) every 4 to weeks. I just love retirement !!! It does not pay to well though.