Originally Posted by k52412
I have never had a unit with two black and two grey tanks. When dumping or emptying the tanks can I empty them two at a time ie both blank tanks or both grey tanks at the same time. I'm concerned that at a dump station I could be there for awhile.
I have 3 gray tanks and 1 black.
The dump valves are 2 in front of axle into a single pipe.
And two behind axle with a single pipe.
I split the valves at dump site
Install hose on front pipe
1) open front black till drained then close.
2) open front gray till drained then close.
3) move hose to rear
4) Open both grays till drained then close.
Takes about 10 minutes.
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