Stuck Closed Grey Dump Valve
I have a cable actuated dump valve. It has always bee real tight to open and close, not like the other 2 valves. I went to open it and it was super tight, so sensing it wasn't working properly I tried...
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Been there done that....LOL. Rotate the handle portion of the valve away from you, then drill a 3/8" hole in the valve housing on the back side. Make sure the hose is hooked up to a sewer, then take a straight blade screwdriver and through the hole you just drilled, "slowly" push the blade to the open position. There will be a little "seepage" through the hole, but not enough to worry about. Once you have the tank empty, remove the valve and replace. On your next valve, add a zerk fitting so you can grease it and use a NON petroleum grease to keep it working smoothly.
