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Old 05-15-2008, 02:37 PM   #1
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Filling Fresh Water Tank

We have a 2002 Windsong. When I fill the fresh water tank, the plastic tank actually expands and starts to look like a baloon. Apparently, there is no vent in the tank to allow air to escape while filling the tank. I've had to remove the overflow hose to allow air to escape while filling ---- what a pain!

I presume that most Forest River products use similar fresh water tanks and was wondering if anyone has experienced this problem or if there is a solution that is easier that removing the overflow hose every time you fill. I hate to drill a hole in the fresh water tank to allow air to escape.

Any suggestions?
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Old 05-15-2008, 03:51 PM   #2
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The overflow hose IS the vent.
Why is it not venting???
Insect nest or something in there??
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Old 05-15-2008, 05:06 PM   #3
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Quote:
Originally Posted by KyDan View Post
The overflow hose IS the vent.
Why is it not venting???
Insect nest or something in there??
yup
i would suspect the hose has a kink or BUG hanging out
can you see the entire run of the overflow hose?
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Old 05-15-2008, 10:10 PM   #4
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You might need to inspect the intake line, mine was installed with a little bit too much length and created a slight uphill path that caused a no-vent problem. Ideally the intake line should angle nicely down to the tank. The ballooning out is surprising though... one wouldn't think a little trapped air would create that kind of pressure.
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Old 05-15-2008, 10:27 PM   #5
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I had a tank problem just like the welshman! I had to shorten my intake hose a little.

I agree. Your vent hose sounds like it may be blocked/kinked.
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Old 05-17-2008, 02:46 PM   #6
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Thanks for the input. Actually, my overflow hose is configured in a loop, which forms a water trap (like a "P" trap under a sink). I just presumed that is the way FR intended the overflow hose to run. When there's water in the overflow hose trap, air doesn't escape from the freshwater tank.

I have presumed that FR intended the overflow hose to hold a small amount of water so that varments couldn't crawl up the hose and into the tank.

I'm thinking that the best solution might be to shorten the overflow hose, thereby eliminating the loop that holds overflow water in the trap. I figure that if I shorten the overflow hose and eliminate the loop, it will be a straight run from the tank to the overflow hose outlet and no water will be trapped and air will easily escape from the tank upon filling.
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Old 05-17-2008, 11:50 PM   #7
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My overflow hose didn't have any loop. It had a screen over it outside.
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Old 05-18-2008, 07:36 AM   #8
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The overflow/vent tube should be free of any kinks(obstructions), no tight bends. Also, the overflow/vent tube should NOT hold water, such as a "P" trap.

For more info, check out This Thread



Good luck,
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Old 05-18-2008, 12:49 PM   #9
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Thanks to all for your input. I'm going to remove the loop from the overflow hose and put a small piece of screening over the exit end of the overflow hose.

That should do the trick!
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Old 07-14-2008, 04:27 PM   #10
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You can allways open a faucet in the trailer.
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