Quote:
Originally Posted by Chance
Was a very long time ago, so going from ancient memories.
On my first motorhome, a Coachmen Class C, the black tank was directly under toilet. With the toilet valve open I could see down into tank with a flashlight. Once outlet got plugged, I installed a cap that had a garden hose connection and back flushed just enough to establish drainage. I then re-connected sewer line, opened toilet valve, and using a nozzle on garden hose started flushing from inside out being careful not to break up too much of mound at once. I also had to use a broom handle to help break up the mound in a controlled manner so it wouldn't plug the discharge line again.
It was painfully slow and messier than one would expect, which made it one of those things that you never repeat again. We had made a couple of newbie mistakes that were easily avoidable.
Back then I didn't have access to Internet like today, and hadn't read what not to do that causes these problems.
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On my Class A Miramar, the toilet is on the opposite side of the drain. I can only see what is immediately viewable from the toilet on the "high" side of the tank. I did use a similar tactic and move the solid waste that was mounting up around the bottom of the toilet drop. We certainly do not leave the black valve open, but still have an issue with pyramiding. Also, I can only assume the rest of the folks on board are filling up the bowl prior to passing solids.
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