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Old 10-31-2020, 04:26 PM   #1
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Country Coach Owners Club
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Location: Fort Smith, AR
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Magic air fitting pressure supply valve?

I needed to put air in one of the tires so I bought an air hose, with fittings to match the female fittings mounted in the front and rear of the MH. I had some difficulty pushing in the male but got it after a big whoosh of escaping air. I dragged the hose around to the tire and tried putting in the air chuck but the fittings didn't match so I changed out the fitting. Again I started to put the chuck in but there was no air pressure in the hose. I thought it weird but thought perhaps you must have the motor running to get air so I re-started the engine. Still, no air pressure. I was using the engine compartment supply so I moved to the front under driver compartment supply. There was no air pressure there either.
Perhaps there is an electric valve that controls the air supply to these fittings. The gages on the dash show 100 psi. Would someone please enlighten me. THANKS
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Old 10-31-2020, 04:30 PM   #2
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Both of the fittings you used may be for filling the tanks during a tow, not for using air from the system.
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Old 10-31-2020, 05:05 PM   #3
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We have two air fittings on our CC. One in the engine compartment and one in the front basement driver side.

Both will air tires with no electric switch.

However, you do need to match the model of connector fittings so that they connect easily and pass air. There are several styles and each fitting is usually engraved with its model number.

If you are trying to air a tire to more than 105 psi, you really need to start the engine (and its compressor).

If you want a lot of air added, you may need to start the engine (and its compressor).

The engine compressor usually is governed to about 120 psi and has a gauge on the dash.

Some folks find it useful to vacate the engine air pressure to less than 100 psi and then catch the compressor while it is working back toward the 120psi level to get more air to their tire.

With a 120psi air compressor and 105psi tires, it can take several minutes to inflate a tire.
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Old 10-31-2020, 05:27 PM   #4
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Magic air fitting pressure supply valve?

You did not say coach, and Iím on my phone so cannot see signature line but I think you have 2007 Allure (from memory). Both front and rear quick connects are from auxiliary system which has a pressure protection valve between primary system (wet tank) and auxiliary system. At less than 70Psi on either side the pressure protection valve slides and protects higher side system - it assumes there is a downstream leak.

Building air pressure in primary and it should reset. Try putting into travel mode and possibly auxiliary system may reset.
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Old 11-01-2020, 08:30 AM   #5
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thanks, I knew something was butting into the equation. Two systems huh. I need to learn about this. you call one "wet". why "wet"? please explain the use for each one?
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Old 11-01-2020, 10:48 AM   #6
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Wet tank is the first tank in the system, after the air dryer, and designed to capture any water and oil from the prosses of compressing air that gets past the air dryer.

That wet tank supplies 2 tanks thru a safety check valve tee, a primary and a secondary tank.

Primary is for rear brakes and secondary is for front brakes. Where the connections, your attempting to use come from, depend on the manufactures.
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