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Old 02-19-2014, 05:46 PM   #1
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2013 winniw 26 he. when fresh water tank is 90% full water will leak out of overflow tube 0n right turn only, any help out there,
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Old 02-19-2014, 06:02 PM   #2
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Well, sounds like it's too full, water sloshes and drains out. What are you wanting?
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Old 02-19-2014, 06:13 PM   #3
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Less water? Maybe tank is not level?
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Old 02-19-2014, 06:16 PM   #4
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overflow

would like to stop it from doing it
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Old 02-19-2014, 08:54 PM   #5
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Your tank is doing what it is designed to do. With the tank that full and the water moving around while driving, it is going to release some water from the overflow tube.
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Old 02-19-2014, 09:22 PM   #6
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2013 winniw 26 he. when fresh water tank is 90% full water will leak out of overflow tube 0n right turn only, any help out there,
It depends how you define full as the tanks are 100% full when the level is just below where it is sloshing out the overflow. Full is somewhere below 90% actual tank volume and probably closer to 80/85% the total volume of the tank. Don't try to squeeze the extra few gallons in or just fill it as you have been and let it spill out the overflow until it equalizes.

It is only water and as long as it is not overflowing inside the coach and your not wasting hundreds of gallons its not that big an issue such as leaking oil, brake fluid, coolant, fuel or the contents of the black tank.
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Old 02-20-2014, 09:35 AM   #7
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Your tank is doing what it is designed to do. With the tank that full and the water moving around while driving, it is going to release some water from the overflow tube.
The sensor is not absolutely correct you are probably overfilling it.

The tank is almost transparent, look to see what the actual level is
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Old 02-20-2014, 09:43 AM   #8
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Filling it all the way will stop it from sloshing around. Think of a water jug completely full compared to one filled 3/4.
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Old 02-20-2014, 10:03 AM   #9
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Winnebago has a fix for that. Its call an anti syphon drain extension. If under warranty, they install a long water line between the tank outlet and the drain line. It helped in my case but.... you will still not be able to fill to 100% full. I fill mine to about 1' from the top. If not under warranty, your Winnebago dealer should know of the fix and do it for you.
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Old 02-20-2014, 10:23 AM   #10
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As you can see from the replies it is quite common to lose water if the tank is full. If we are dry camping or it is too cold to hook up water line, we go to the campground water faucet before we park, and fill the tank. We travel with 1/4 to 1/2 full. As others said, there is a fix and may be worthwhile if under warranty. I am still under warranty, but have not had the fix done.
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Old 02-20-2014, 01:34 PM   #11
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I had the same problem with our MH. I filled it till the full light came on and then drove about 100 miles to a dry camping destination. By the time i got there we had lost many gallons of water. The gauge after checking the actuall level is not anywhere near full as well so we ran out of water way before we should have. I solved the problem by installing a gate valve on the overflow line which in my case was easy to do as it passes thru the same compartment as the pump etc. I usually keep the valve open unless I need a full tank of water for dry camping/
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Old 02-20-2014, 04:01 PM   #12
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On my Aspect. The overflow is only way to tell when tanks gets full.
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Old 02-21-2014, 05:49 AM   #13
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fill to full

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On my Aspect. The overflow is only way to tell when tanks gets full.
I always and only fill from the side gravity fill. when filling I fill till it flows out the inlet. turn off the water, close the cover and take off.

If you are loosing water be sure to check the drain valve that it is not leaking.
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Old 02-21-2014, 05:50 AM   #14
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On mine the water will continue to flow after filling. By turning on the outside shower faucet it breaks the vacuum and the water stops overflowing/syphoning. Works for me.
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