1986 Newell with air leaks?

[86loco]

I'm have some kind of problem with air leaking on my 1986 40' Newell coach, what's happening is after a day or so, my coach will drop all the way down on passenger side. I have tried leaving the level switch on and turning it off to see if there would be a change either way. The air compressor appears to be working as it should. I'm puzzled?:confused:

[TechTalk]

With the manual system (four toggle switches, one for each corner, plus a master on/off) rather than the later, single button automatic system, once you have leveled, turn the master switch to off. If you still have a leak that causes the coach to become unlevel, you can try to find the leak by using soapy water to soak all of the connections between the leveling valves and the air bags until you find one (or more) that bubble.

[Neweller]

If your coach has the MAC valves (6 in front & 6 in back) as a part of the leveling system air can leak out the top of the valve around the manual operate (push & lock) plunger. Or a valve might not close all the way due to a broken manual operate shaft (I had one) or grit inside the solenoid might prevent it from fully retracting (I also found grit in several valves in the engine compartment). I rebuilt all my leaking valves with a rebuild kits available from MAC distributors at about $12.50 each. Most valves can be rebuilt without taking them out of the vehicle, just loosen them from their mounting. On some I had to remove one air hose to get access to the valve. Or MAC will rebuild your valves for about half the price of a new valve. I bought one new valve ($45.00) so I could take it apart and study the inside. I suppose a leaking ride height valve could cause air to leave one (or more) air bags.