I had something clog the black tank flush
from the outside line. Couldn't tell what it was, but insects of some type got into the flush
inlet, and flushing it didn't work because no water went through at all- nor did any air when I put air pressure on it.
I pried the old flush
end off, and found no check valves or anything else-- although there is, of course, the air break. The flusher was just a small, plastic, cup-shaped (about 1/2" deep) fixture with holes in it. It's also on the drain
side of the tank. Now how did it ever flush
such a wide tank by pushing against the natural flow?
I removed the end, plugged the opening in the tank, and extended the flush
hose to the other side of the tank. I bought a turbo-flush from CW and followed the installation instructions. Now the flush
is on the passenger side so it flushes towards the drain. It also extends about three inches into the tank and spins around when water pressure is applied, so that no part of the tank remains unflushed. And it has a check-valve. Works very well now.
John and Lori
2005 Alpine Coach 40FDQS