08-04-2017, 10:59 PM
Thank you to everyone on this thread. My compressor had been cycling every 5 minutes or so for the last few months and I hadn't been able to take the time to diagnose the problem. This evening we ran out of air and I figured I either had burned up the 110 compressor or I had a massive leak. I checked the pump and it was super hot, so I turned it off and began to look for a leak..I was losing 20-40 psi a minute..I couldnt locate a leak. If the engine was on I could hold pressiure but the 110 couldn't keep up. So I ran to Walmart bought a pancake compressor stuck it in the stacker plugged it into the coach and it couldn't keep up either. So it was off to dig deep for the leak.
My brake air stayed solid even if the supply air dropped quickly so I ruled out the brake system.
I drained the water separator by the 110 compressor. Then I went under the coach betweeen the wheels and opened the petcock valve on the four tanks I could see. One had quite a bit of water the other three were bone dry. But no obvious leaks. Next I checked the air bags and the height control valves in the rear.. no leaks.. so then I checked the height control valve in the front.. it can be accessed by removing the center panel on the front side of the storage bay. I immediately heard air . But can't find where it's leaking even with soapy water. The coach was in level mode and the front was dropped down. Put the coach in travel, it raised up and the leak went away. The air pressure was now dropping at a slower rate so I had diagnosed part of the problem. I also noticed a small hyadraulic leak on one of the fittings to the steering ram.
So I checked every seal ,toilets ,air doors nothing.. then I began checking each storage bay. When I got to the water bay I heard it! We are at a campground and dumped and I forgot to close the valve back and I have a large leak when it is open.. since we never stay any where longer than a day or 2 I never hook up the sewer line for more than 10 mins. So I never knew my leak was as bad as it was.
But this thread helped me break the problem down to smaller units.. thanks to all for your help.
My brake air stayed solid even if the supply air dropped quickly so I ruled out the brake system.
I drained the water separator by the 110 compressor. Then I went under the coach betweeen the wheels and opened the petcock valve on the four tanks I could see. One had quite a bit of water the other three were bone dry. But no obvious leaks. Next I checked the air bags and the height control valves in the rear.. no leaks.. so then I checked the height control valve in the front.. it can be accessed by removing the center panel on the front side of the storage bay. I immediately heard air . But can't find where it's leaking even with soapy water. The coach was in level mode and the front was dropped down. Put the coach in travel, it raised up and the leak went away. The air pressure was now dropping at a slower rate so I had diagnosed part of the problem. I also noticed a small hyadraulic leak on one of the fittings to the steering ram.
So I checked every seal ,toilets ,air doors nothing.. then I began checking each storage bay. When I got to the water bay I heard it! We are at a campground and dumped and I forgot to close the valve back and I have a large leak when it is open.. since we never stay any where longer than a day or 2 I never hook up the sewer line for more than 10 mins. So I never knew my leak was as bad as it was.
But this thread helped me break the problem down to smaller units.. thanks to all for your help.
Marc Newman
Formerly Newell 422, 507, 512 701