Does anyone know how to open the large (main) fuel door to gain access to the fuel tank sending unit? It looks to be hinged along the top edge, but no obvious handle or other "thing" to pull/turn/etc to get the door to swing up.
Pull the bolts out of the bottom of the door from underneath the coach and it will swing up if I remember correctly.
go through the fuel door and there are bolts at the top on each side remove those then it lifts off 2 pins on the bottom is the way mine came off
Yes, this turned out to be the solution. A 9/16" wrench for the two bolts that hold the top of the fuel door to the frame. Once removed the door lifted up and out. I thought those two pins might have been broken bolts, but they are just pins.
You cannot see the two bolts you have to remove, but they can be felt easily when reaching in through the small fuel filler door. One on each side.
Thanks for the help!