Hereís the little bugger. There are two red buttons; one on each end. The left button, Iím told by FL opens the valve to dump air and the right button closes to fill. To test that, I need to be under the rig while it running. Yeah, about that...
Iím picking up the new part to replace the malfunctioning part. So that sliding under while itís running thing is a non-issue.
Thanks for the help. If youíre in South Texas next week, Iím buying.