I have been chasing a air leak on the front right side for awhile, so yesterday I decided to get serious and find the problem. Both of the Nason air switches had small leaks so removed them and took them apart and re-sealed and adjusted to 20 psig, re-installed aired up the coach and the right front still saged down pretty fast. One of the solenoid valves had a little fuzzer leak so I replace the O-Rings on them, front still saged down. Isolated the right side air springs, pressured them up, sprayed everything with leak solution no leaks on any of the tubing or surge tanks or 3/4" hoses to the air springs, sprayed the air springs but you can only see one side of each bag.
Today I went about removing both air springs, they (Monaco) did not make it easy to get at these, you don't have any room to use a 1 1/4" wrench on the air fitting on top of the bag, I have a wrench I cut off to fit then hit the end with a sledge hammer to brake the fitting loose. Another thing the brains did was the hole in the top plate is not large enough for the 3/4 fitting to drop through so you have to get it out also and it was harder than the hose fitting, had to weld up a 1 1/8 box wrench and a 3' piece of pipe to get it loose. The front rear one was pretty easy as I cut and opening in the wall of the fuel bay that's right behind the air spring, it was still a real job, not for the faint of heart trust me. The folks at Monaco have never heard of pipe dope or anti seize for bolts and fittings.
Rigged up and tested both bags under wate in a trash can and they both have leaks, one out the bottom and the other right out the side. Order two new Firestone air springs, will take a week of so the get them $240 each free shipping.
The Firestone part number is W01-358-8897 for the front springs and the rear spring are # W01-358-9376
These will go back in a lot easier than the job of removing them.
I will add move when I get the air springs and have them back in the coach. Merry Christmas to all.