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Old 06-15-2014, 08:14 PM   #1
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Water Hook Up Drains Out

I have access to a nice '78 Winnebago Travel Trailer to use, but it was last used by my parents in 2004. As we are cleaning it and getting it back into usable condition, we hooked up the city water lines and not using the storage tank with water running into the RV, water is draining out of a small white tube below the toilet and sink in the rear. This is a 250Rb unit and do not believe it is stock but can't find where or how it is getting to this drain.

Entertaining any ideas or questions. Thinking of trying to re-plumb lines but would rather just find issue.


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Old 06-16-2014, 08:36 AM   #2
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Is it draining outside or inside? if its outside it might be your low point drain.
inside it might be a hose has come off.

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Old 06-16-2014, 10:25 AM   #3
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Running out of a small white tube below the sink..

ASSUMING this tube is also Below the RV so it is draining on the ground


There should be a valve somewhere upwards of the drain point or,, if the tube is rigid, threads for a cap. USUALLY 1/2 inch threads but no guarantee.
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Old 06-17-2014, 10:26 AM   #4
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My hot & cold water lines drain out of similar tubes below the trailer, under the sink. On mine, there are valves inside the trailer, in the bottom of the cabinet where my bathroom sink is. It's designed to drain water from the system. Not sure if that is your situation, but might start looking for shutoff valves that have been left open.
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Old 06-18-2014, 05:18 AM   #5
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Thanks all! At first check that was my thought but a shut off is not readily noticed. Suspected a clean out of the water heater but my father is sure he shut water off to the heater.

Capping it off may not be an option as the plastic spout may be very brittle but I will check again.
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