RV Repair: heater fan repair, hot water heater, winnebago brave

Question
I have a 2001 Winnebago Brave.  It has a heating coil and fan behind the water heater that heats the Motorhome with the engine cooling system.  The fan sounds like it is loosing a bearing.  How can I access the fan for repair.  It looks like cutting a hole in the floor or removing the hot water heater and a lot of braces.

Answer
Art
I'm sorry, I don't have a definite answer for you, it seems each time they build those guys they come up with a different idea as to how its done. Most of the time they don't plan to have it repaired. I have yet to see one that needed to have a hole cut to remove.
If you could send me a photo of your problem area, I can give you you better idea.
Sorry
Thom
rvphd@yahoo.com