OK, your is like mine other than having the air operated valve on the drivers side as well.
When you close the manual valve and open the air valve on the drivers side, only the toilet goes into the tank, everything else goes out the hose into the sewer. When you want everything to go into the tank (such as when sewer isn't available or when traveling) close the air valve and open the manual valve. That way EVERYTHING goes into the tank.
I don't have a waste tank clean out valve (although I do have a fresh water tank fill on both sides), I doubt that you will be able to get the plug relieved by filling the tank. Poo sets up VERY hard. I would drain the tank from the passenger side to minimize the mess, the try to remove the manual drain valve as Richard suggested. Is it the Thetford or the Dupree?
That is the reason that leaving the waste tank valve open all the time when hooked to sewer is NOT a good idea at all.
|