On the next to last evening of our last trip, I stepped on the pedal of the Thetford "Bravura" toilet, only to hear a loud bang and have the pedal drop to the floor. The flush valve stayed wide open regardless of pedal position; thankfully the water was not running.
I pulled off the front trim and found that the screw that connects the rod from the pedal to the flush assembly had backed out completely. The big hairpin spring that holds the flush valve closed was hanging on the rod from the pedal.
With great difficulty, I managed to sprawl across the aisle and get a hand in. Holding the pedal down with the other hand, I got the flush rod back in place and fit into the flush mechanism. There was just enough room to get a stubby screwdriver in and Ionly managed to get the screw partially tightened. The space is so small that to turn the screwdriver caused a plastic edge to dig into my arm painfully.
There was no spring tension on the flush valve and the toilet would not hold water, but, at least, the flush valve closed well enough to prevent odors, The lash-up did get us home in fairly good shape. At my last stop, I flushed the tank well and put in a double dose of treatment to spare whoever at the dealer ends up fixing it. I suspect that the toilet will have to be removed or disassembled since there is no way to get in there otherwise.
Now, to call the dealer and set up an appointment.
John W. Irwin
2018 Interstate GT, "Sabre-Dog V"