Originally Posted by us71na
One thing that is missing from that diagram is the suction hose for winterizing the water system. There should be two valves on the suction side of the pump. One goes to the fresh water tank, the other goes to an open ended hose used to suck in anti freeze. The one to the fresh water tank should be open and the one to the suction hose should be closed.
Actually two things missing. There might also be a screen-type filter ahead of the pump inlet - on the suction side. It sometimes gets clogged. The pump will run and you will get a trickle of water if it's clogged. Check for that.
And the winterizing valve might not be completely closed. That would account for some water, but not much flow. You could be sucking air and a little water.
2015 Jay Flight 32RLDS Elite
2012 Chevy 2500HD Crew Cab LTZ (6.6L Duramax/Allison)
Equalizer Hitch (1200# bars)