I have the HWH air and hydraulic on my coach and am now experiencing on the drivers side rear a slow air leak. Once I level the coach overnight it will loose air and only affects the drivers side rear. I have been under the coach for the last two days listening with my ultrasonic listening tool with ear phones, very sensitive tool, magnifies a small leak into a roaring jet sound. Even using a soapy water spray bottle, I still can't find the leak. Have checked ride height valves, HWH 6 pack, check valves, air tank fittings, air line runs, and even all rear air bags. Even loose all air 120 lbs overnight
If I am not mistaken once the air goes through the HWH 6 pack to level the coach it can't reverse flow and is held inlace until dumped. It this correct? I believe that others here have experienced the same thing and hope someone can point me in the right direction. Had the coach just a little over a year and still finding things to learn about the systems it has.