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Old 06-16-2015, 03:52 PM   #1
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2015 White Hawk 23mbh Black Tank Flush

We just got our 23mbh 2 months ago and absolutely love it! We have been out several times and it is the perfect TT for us. One issue that I have is for some reason the 23mbh does not come with a black tank flush. I knew this when I bought it but figured I could install one myself. Little did I realize that I have the enclosed underbelly and I have no idea where the black tank is actually located. I have read quite a few horror stories about people that have removed (in part or whole) the underbelly cover and made a huge mess. My question is this, has anyone done this mod before and if so does anyone know where I can find out where the black tank is located before I cut anything open?
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Old 06-16-2015, 05:40 PM   #2
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You could use something like a Flush King. It just attaches to the end of the sewer outlet on your TT and then your sewer hose attaches to it. You then hook up the rinse hose to it and it sprays water up into the tank. The Flush King is clear so you can see when the water starts coming out clear indicating a clean tank. We used one with our old TT and it worked good. No cutting into the underbelly or tank.
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Old 06-16-2015, 06:24 PM   #3
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I have that with that same trailer and have something similar and it works great. I have a clear straight thru hydroflush. It attaches to the drain outlet and then you attach your drain hose and grey water garden hose to it. My has a off on valve that controls the flow of water back into the tank. There appears to be a straight shot to the black tank so the setup I have and that bluie5 recommended will work great
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Old 06-16-2015, 06:44 PM   #4
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I have a black tank flush, and while it is a handy feature; it doesn't work as well as a water hose down the toilet. I'd save the money and use the hose imho. (but i have kids who like to make a t.p. pyramid in the black tank so I guess I need something to blast it apart)
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Old 06-16-2015, 07:20 PM   #5
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Note also, the flush king has a twist knob that allows you to direct water into black tank or back down the drain hose to flush it.
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Old 06-17-2015, 10:34 AM   #6
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Thank you for the great information. So the 23mbh has a straight shot from the valve to the tank? The reason I ask is I did some research and it looks like if you have any bends in the pipe the flush king cannot even get water back into the tank.
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Old 06-17-2015, 01:29 PM   #7
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Quote:
Originally Posted by teamarmstrong View Post
The reason I ask is I did some research and it looks like if you have any bends in the pipe the flush king cannot even get water back into the tank.
You are correct about that. I have several bends in my 5er drain pipe and my Sewer Solution only rinses the last couple feet of pipe. I have a factory installed tank rinser but also use one of these about every 4th dump because it does a better job than the installed rinser. This one is from Amazon but I got mine from WalMart for about $7.
http://www.amazon.com/Camco-40094-Sw...wer+flush+wand
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Old 06-17-2015, 05:16 PM   #8
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Quote:
Originally Posted by teamarmstrong View Post
Thank you for the great information. So the 23mbh has a straight shot from the valve to the tank? The reason I ask is I did some research and it looks like if you have any bends in the pipe the flush king cannot even get water back into the tank.

On the black tank yes. It is raining now do I can't take a picture but I will later. It does work because I thought my tank was clean until I used it and saw lots more TP and brown water ( sorry to be explicit)
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Old 06-17-2015, 06:28 PM   #9
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Might was to view this video just for the heck of it:

Or just look up "The Fit RV". Kind of gives you an idea of how stuff works, or doesn't work.

I've always installed jets (tornado, no fuss flush etc.) in our tanks if they didn't come with them. On some, I installed 3 in different locations and ran my own new tubing. Never had a failure or issues with a tank. Most tanks or easily accesible to install a jet. Some of the ones I've done required using a 90 deg attachment on the drill to make the hole.
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Old 06-17-2015, 10:59 PM   #10
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So after watching the video it appears that if the connection to the black tank is not straight then you are better off with with some kind of flush. I almost take back what I said on the straight shot. I just remembered that I have the closed underbelly on my trailer so even with a picture there may be a bend in the pipe I cannot see. I will say that when I used the hydroflush it appeared that the majority of the water went back into the tank and then when I turned off the water then dirty water came back out. However I'm intrigued enough to try to get pictures tomorrow if nothing more than to satisfy myself I might not need an external flush.
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