[Shamu406]

John,
First thing can you verify that your 12V & 110V air pumps are working and building proper air pressure.  Your 12V air pump should build air pressure to about 55 psi.  Your 110V air pump should build pressure to between 110 & 120 psi.

R-1 is the front basement compartment on the right side.  I have seen over a gallon of water collecting in that air tank.

The second three gallon air tank is located on the front wall of the right wheel well in front of the right drive tire.

Since you are having so many air problems I suspect water is your issue and the first place I would look.  It is also the easiest place to start.  If you find any water, then you are going to need to get it out and replacing the desiccant filter is a good starting point.  Remember you live in a very humid climate so your coach is going to collect water much more than a coach in Arizona.  Once you get the moisture under control, then I would start valve by valve fixing or replacing them.  In your climate I would be replacing the desiccant filter once a year.

Working on a Newell is not difficult for some one with some tools and mechanical skills.  Understanding the different systems and how they work can be challenging.

Since I don't know what you have available to you, I'll describe how I get under my coach and you can determine if you can also do so.  I have a concrete surface and park my coach on 2 X 12s which raises the coach 1 1/2".  I then use the HWH leveling system to raise the coach all the way up.  I then crib the coach up using 8 X 8s that I cut to length--two fit under the trailer hitch and two under the front skid plates.  I then put HD jack stand under the square pads that are located behind the front & rear sway bars.  I can now safely go under the coach and perform every thing, including lubing the chassis and draining the air tanks.  

If you cannot get under your coach you are going to have to find some one competent to do it for you.  I would look for some one who services buses.  Being in Florida you should have some available to you.

I hope this is helpful......................................

Steve,
Thanks for the help. I will check the tanks you mentioned today. Both pumps seem to be working at those pressures. Do both pumps work the same lines? Or do they have separate duties? Because my toilet flapper started to work again when the 110 pump was left off for several hours, and I heard the DC pump in use, which is set at 60 psi, then I turned on the 110 pump and the toilet flapper got stuck again. and since the cabin air door is right next to the toilet, I guess that has something to do with the air door barely moving? Can water get in these lines too? Can they be purged?
Thanks Steve.
John

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I recently had all of mine checked while the coach was lifted so you could walk under it.  Many of the tanks are built into the frame itself and thus do not look like tanks, and the have plugs instead of pet-cocks.  I think there are four or fine that look like air tanks, but the others are usually in frame cross members.l

Thank you , Chester!