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Old 03-26-2016, 12:15 AM   #1
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Concord 300DS dump mechanism

Has anyone modified the dump mechanism on a Concord 300DS? It seems like a goofy system. And what's with all the gray water dump valves? Are they all necessary?
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Old 03-26-2016, 10:54 AM   #2
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Has anyone modified the dump mechanism on a Concord 300DS? It seems like a goofy system. And what's with all the gray water dump valves? Are they all necessary?
Working on it...

First thing I did was get rid of the "sewer hose carrier", next I put on a cap with the gray water drain cap on it. I currently use a Sewer Solution for emptying my tanks.

My game plan is to replace the two main gray valves and the black tank valves with Barker Auto-Drains (I don't like or trust cable operated). I prefer Barker over other brands because they are made in the USA and they have repair parts available. The new valves will also mean re-plumbing the drain lines to raise them up a bit and reduce the total footage. I also want to put a macerator on the black tank at the same time for emptying. I have a whole mod thread going in the Coachmen motohome sub-forum

Aaron
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Old 07-15-2016, 06:05 PM   #3
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New 300DS Owner

Greetings all. I just took delivery yesterday of our new 2016 300DS. Our first one. I knew that damn Sewer gizmo was going to be trouble when we first looked at the coach.

As expected, it dragged (just a bit, before I stopped) trying to get the coach into the driveway. I had to ramp up the driver's side with a make shift bunch of lumber.

I'm probably going to take it off. I thought I could just connect my sewer line straight to where the gizmo attaches. In the end, I may go the same way that Wahoonc went with the Sewer Solution. For now, I may try to use the 10' sections of the Rhino Extreme sewer lines that we already purchased. Anyone see any problem with that? Is Wahoonc and I the only ones taking this thing off?
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Old 07-15-2016, 11:12 PM   #4
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Nope, I'm with you. That was one of the dumbest ideas I've seen. Must have looked good on paper. I thought I would give it a try for a couple trips but off it came after fighting with it on one trip. What a relief. I just use a standard dump hose and it works perfect. I'm going to put a couple of PVC tubes in the compartment above it for the two 10' sections of hose I have. I'm also going to turn the gray water dump valve handles 90 degrees so I can pull them open easier. It's not easy going sideways after a little road crud gets in them.
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Old 07-15-2016, 11:17 PM   #5
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I'm going to put a couple of PVC tubes in the compartment above it for the two 10' sections of hose I have.
Could you please explain your plan with a little more detail? What are the PVC "tubes" supposed to accomplish? What diameter are they?
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Old 07-15-2016, 11:30 PM   #6
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Sorry. I'm putting two 4" schedule 80 white PVC pipes to hold the dump hoses. They are about 4 13/32" inside diameter by 42" long. I'm going to screw them to the sides of the storage compartment. Then I can open the compartment and simply pull out my 10' dump hoses. When I'm finished dumping tanks I can just slide the dump hoses into the PVC pipes. I haven't decided if I'll put caps on them yet but probably won't have to.
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Old 07-16-2016, 12:46 AM   #7
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That sounds like it should work, as long as you have something solid to screw to. My salesman said he keeps his sewer hoses in a Rubbermaid type tote and stores it as far away from the bedroom as he can... in a compartment. When you do it... Please post some photos of where you drilled.
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Old 07-16-2016, 10:28 PM   #8
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Old 07-16-2016, 10:58 PM   #9
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Good move. Don't know if you have ever had this problem but my dump hose is very hard to snap on/off. I ran across a plastic wrench that easily slips on to tighten or loosen it. If you are interested I'll post pics and source.

Dick
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Old 07-17-2016, 10:41 AM   #10
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Good move. Don't know if you have ever had this problem but my dump hose is very hard to snap on/off. I ran across a plastic wrench that easily slips on to tighten or loosen it. If you are interested I'll post pics and source.

Dick
Absolutely interested.
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