TonyMinExplorerJul 17, 2015dump valvesMy black tank dump valve is really hard to open and close now. How can I service it? I hope I don't have to remove it. Thanks
GjacExplorer IIIJul 17, 2015I added a grease fitting to mine and give it a shot of grease every other year or so. The black valve always seems to stick more than the grey one.