03-19-2014, 09:37 AM
I had the same problem with my 93 after I bought it. The sewer hose fitting on the coach was made by Thetford and was a higher end fitting, but an odd size. The only answer I could come up with was to either rework the plumbing in the coach or change the end fitting on the Rhino hose to a Thetford. I chose to do the latter for now. Since my sewer valves are also Thetford and I've had one leak and found parts a little hard to come by I'm planning on switching to all standard fittings sometime soon when I feel like messing about with the *******.
Jon Kabbe
1993 coach 337 with Civic towed