Location of black and gray water tank

[Tearstone]

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.

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.

[sforl]

Bob Denman. That was too funny! 😆

[Chance]

We made a lot of mistakes initially, including use of inferior TP, using too much, and not using enough water while trying to conserve limited supply. Traveling with other adults who though an RV was like a house didn't help either.



With modern use of macerator pumps and clean-in-place flush systems, I see advantages of having just one large combination tank (grey and black as one) that would minimize some of these problems -- provided floorplan and elevations allow for proper drain line pitch.

I've read reviews of motorhomes (from Class B to luxury coaches) with a single combo tank and don't recall anything negative. The benefits, on other hand, are many; including lower cost, and lending itself to greater automation.

[Rowdy]

Look under you M H

[Bob Denman]

Originally Posted by sforl

Bob Denman. That was too funny! 😆

Thanks; I'll be here all week... try the veal!