[77newell]

The location appears similar to the step cover solenoids on my 93 coach. One easy way to tell is to have someone move the control switch while holding your hand on the solenoids.

If these solenoids move power an air cylinder, which seems to me likely since there are two of them - one for open and one for close, then Tom's suggestion that it is a leaky cylinder seal makes most sense. But again and easy way to tell is to move the control switch to its opposite position and see if the leak continues.

The only possible connection between this leak and your leaning coach that I can conjure up is if, as Forrest stated, your compressor shuts down and this leak you've been describing causes your air pressure to drop quite low. Then if you also have a leak in the 6-pack solenoid that raises the side that's dropping so it allows the suspension air to leak back into supply system. It could also happen - oops this is a second possibility - if there is a slight leak in the suspension system which drops that side, you have the HWH set to automatically level, and your supply air pressure is depleted so that when the HWH tries to do its job it ends up dropping the level further by air running backward through the "raise" solenoid valve.