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Old 07-13-2015, 01:24 PM   #1
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Question Water leaks out of Tank

I have an 09 Jayco 1207. I usually fill the fresh water tank until it leaks from the outlet underneath behind the passenger side wheel. That outlet is at the top of the water tank and I believe it to be the overflow outlet.

When i drive, and more specifically when im parked on an unlevel surface, i lose much of my water out this outlet. Is there anything i can do to prevent this?

I had considered adding a length of tubing to the outlet and looping it so that a portion of it was above the tank itself but still draining directly down. I thought that would still allow overflow but then the height would stop splashing and tilting out.

Thoughts?
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Old 07-13-2015, 01:46 PM   #2
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The overflow tubes allow air to be vented out as air fills the tank.

Like a siphon, however, once water starts to draw out of it, if will drain water back out.

Lots of JOF members have added a shut off valve or cap on the end of the drain hose
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Old 07-13-2015, 02:16 PM   #3
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How far does the hose hang down below the floor or tank? I pulled my hose up so it is just below the underside of the floor. The loop inside the HTT is probably 12+ inches above the floor, inside the pump cabinet. I do not have any issues with siphoning.
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Old 07-13-2015, 11:29 PM   #4
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Very common problem for years in Jayco/StarCraft models.
Solution here (read the last 3-4 pages, the first several pages are people denying the problem actually exists...as you know, it does)
https://www.jaycoowners.com/forums/f7...ukes-3503.html
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Old 07-15-2015, 01:02 PM   #5
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I added a length of 1/2 inch ID flexible tubing with a cap. Well see how it goes this week.
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