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Old 10-24-2012, 07:20 PM   #1
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Still Stumped by Water Pump

We haven't been able to get anything but air from the house water pump in our 2002 Sea Breeze Scout for a while. The FWT is full. We pulled the water utility panel and checked connections. Everything is tight and no leaks. Neither of the hoses going to the pump had a screen on it or in it. You can see water and air bubbling in the tank side hose right where it fits into the pump. City water works fine. Is there anything else left to try other than replacing the pump? Thanks for any thoughts on the problem.
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Old 10-24-2012, 07:22 PM   #2
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Water and air bubbling in the tank where the pump hooks up? Sounds like the pump may be wired backwards and is blowing air into the tank.
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Old 10-24-2012, 07:27 PM   #3
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Do you have a pass valve you use to fill the fresh water tank from the city water hose inlet? If so, you might have the valve in the wrong position.
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Old 10-24-2012, 07:35 PM   #4
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Or, the valve that is used for sucking anti-freeze into the pump, turned the propper way?
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Old 10-24-2012, 07:39 PM   #5
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Quote:
Originally Posted by 96 Wideglide View Post
Or, the valve that is used for sucking anti-freeze into the pump, turned the propper way?
X2...
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Old 10-24-2012, 08:16 PM   #6
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Thanks for the suggestions. The pump can't be hooked up wrong. It worked fine until it suddenly didn't. Suspiciously, not long after we filled the FWT the last time. Switching the lever from tank fill to city water doesn't make a difference. I'm pretty sure the inlet to tank lever is in the correct position (directly down, like the city water lever), but that's the first thing I check tomorrow.
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Old 10-24-2012, 09:12 PM   #7
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Just checked mine, and it's horizontal.
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Old 10-24-2012, 09:34 PM   #8
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Most of these little 12V pumps have internal Check-Valves that wear out with time. Your symptoms are consistent with dysfunctional check-valves.

Your local RV part supplier can probably set you up with the Rebuild Kit for your pump.

Good luck
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Old 10-25-2012, 09:51 AM   #9
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What about the pump inlet lever?

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Old 10-25-2012, 10:09 AM   #10
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If you have a out side shower check those valves. I had one sucking air once.
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Old 10-28-2012, 05:35 PM   #11
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Problem Solved...Still Bad Pump

Well, it turned out to be the inlet to pump lever, as several posters suggested. It was set for "inlet to pump" instead of the normal operating position, which is horizontal and labelled "tank to pump." Once we changed to tank to pump, the pump started pumping water instead of air. Then we remembered why we had changed the position of the lever. When the pump shut off, water started spewing out from behind the utility panel. Once we got the panel off, we discovered the stream of water was actually shooting out of the pump. Briefly considered a rebuild kit but went with the new pump ($120) instead. Thanks to all for the help.
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