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Old 03-10-2016, 10:07 AM   #1
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Does this make sense?

I have only used my fresh water holding tank a couple times, normally i have hookups. BUT, both times I used it I would fill it up and then head down the road. The drive is about 1 1/2 hours. Each time, I found a wet spot on the carpet in the bed room ( I have a fifth wheel 365SAQB) right over top of where the holding tank would be and behind the panel for the shower valves. I would towel dry the spot both times and it would be kind of dry the next day. The system would work fine as designed. I have checked the valves for the shower, and checked fro leaks behind my control panel around the tank and have found nothing. So, my thinking is if it makes any sense, could the water get to thrashing around in the holding tank while going down the road to the point some gets out somehow on the top of the tank making the carpet wet?? The other confusing thing is its getting wet above the holding tank and its not a pressurized system, so how is the leak going upward......
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Old 03-10-2016, 10:15 AM   #2
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One of our camp host partners bought a brand new high end fiver last January. It was in the shop for over a month because of a similar situation plus rotten floor. Turned out there was a hole punched in the top of the water tank which desteoyed the floor.
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Old 03-10-2016, 10:24 AM   #3
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I don't know exactly where the fill hose is inserted to the fresh water tank, it only makes sense to do this at the top.
Have said that,more than likely the connection where hose meets the tank is not 100% sealed.
An hour and a half Of travel is a long time for water to be sloshing around.
Leaking connection, water sloshing that long, ya I can see some substantial wetness.
I would try if I could see that connection or maybe ask the dealer where it is and see if it lines up with your wetness. Mind you water can certainly travel elsewhere.

Just a thought.

John
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Old 03-10-2016, 10:43 PM   #4
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Most definitely a leak of some type, I Would be more concerned about how the carpet is getting wet thru the subfloor. Does the floor feel soft where it gets wet?
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Old 03-11-2016, 09:50 AM   #5
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The floor is fine. Its only happened twice and is associated with the fresh water holding tank only. When I'm hooked up there are no issues
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Old 03-11-2016, 12:36 PM   #6
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Quote:
Originally Posted by lnewsome27 View Post
The floor is fine. Its only happened twice and is associated with the fresh water holding tank only. When I'm hooked up there are no issues
Tank is by-passed when hooked up.........to city water by the water pump
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Old 03-11-2016, 12:44 PM   #7
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One of the pex tubing clamps they used on white non-pex tubing for my freshwater system, going to water pump, had pinched a hole in the tubing causing it to leak. I had water in my storage area. It started to come under the panels in the main area of the trailer.
I also would check the vent or fill tubing to see if the clamp is loose where it attaches onto the holding tank. My fill tube is just a 3" flexible tube that has very thin walls. A hose clamp is all the secures it to the holding tank.

Good Luck!!

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Old 03-11-2016, 01:53 PM   #8
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Before is does some serious damage I would not travel with water in the tank.
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Old 03-12-2016, 09:22 AM   #9
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Quote:
Originally Posted by lnewsome27 View Post
I have only used my fresh water holding tank a couple times, normally i have hookups. BUT, both times I used it I would fill it up and then head down the road. The drive is about 1 1/2 hours. Each time, I found a wet spot on the carpet in the bed room ( I have a fifth wheel 365SAQB) right over top of where the holding tank would be and behind the panel for the shower valves. I would towel dry the spot both times and it would be kind of dry the next day. The system would work fine as designed. I have checked the valves for the shower, and checked fro leaks behind my control panel around the tank and have found nothing. So, my thinking is if it makes any sense, could the water get to thrashing around in the holding tank while going down the road to the point some gets out somehow on the top of the tank making the carpet wet?? The other confusing thing is its getting wet above the holding tank and its not a pressurized system, so how is the leak going upward......
Is there a reason you are traveling with a full tank? Most CG even if they don't have full service have water available to fill your tank after you get there. I used a couple of state CG last year that had a couple of locations to fill my tank. Just opened the drain to empty the FW tank when I left. I don't like pulling an extra 400 to 500 pounds if I don't have to.

I sounds like there is a hole in the top of your tank. If this is a new unit I would take it back to the dealer. The leak has to be underneath the floor. When you fill the tank you could be pressurizing it. When you fill the tank do you stop before it comes out the overflow or stop before it does? Your overflow should stop the tank from being under pressure. There could be a leak where that line connects to the tank. It would have to be squirting up and soaking the floor.

Sorry, thinking "out loud".


Jim
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Old 03-14-2016, 01:49 PM   #10
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I fill up because there is no place to do so without paying $1.50 a gallon. Its only when I go to the race track. Its pretty much a large field. I don't typically run with water

My rig doesn't has an overflow out the bottom, the hose has a screw in connection. i have to sit and watch the gauge inside and tell the wife when to shut it off.

It definitely is fresh tank related and has to have something to do with going down the road, because once in place there are no issues. i am just trying to save myself from dropping the belly and the tank to look at it if there really isn't a problem.

Thanks for everyones help and ideas
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