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Old 02-18-2013, 12:26 PM   #1
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Fresh water tank - can't use all water

Finally found out why pump draws air/won't pump when I still have 5 gallons left in tank. Intake to pump is on the side, about an inch from bottom. But there's a tank drain, connected to a small sump in the bottom. Looks like same size hoses. Anyone see a problem with capping/plugging the "official" outlet to the pump, and connecting to a tee in the drain line? Thanks.
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Old 02-18-2013, 12:33 PM   #2
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Should be fine. It's strange how most of these fresh water tanks always have the line to the pump an inch or two above the bottom of the tank. It makes better sense to have the line as the lowest point possible so the usable water is able to be used.

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Old 02-18-2013, 02:26 PM   #3
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it would help if you posted year, make and model of RV, so that those that own the same RV, could chime in and see if theirs have the same issue or if they did a mod.
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Old 02-18-2013, 02:48 PM   #4
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With the pump off the bottom of the tank it prevents sucking up any sediment that may collect, in a perfect world we wouldnt need that inch of safety margin
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Old 02-18-2013, 02:55 PM   #5
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it would help if you posted year, make and model of RV, so that those that own the same RV, could chime in and see if theirs have the same issue or if they did a mod.
2011 Rockwood 2604. I'll try to get pictures if I do the mod. Have the underbelly off to pull wires since I like backup lights on my trailers, noticed why I have to have so much water in the tank before it will pump.
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Old 04-03-2013, 08:48 PM   #6
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Anyone else have any input on this mod. I can't suck off the bottom 1/3 of my tank on my 21BH. I try to limit the water I take with me.
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Old 04-03-2013, 09:11 PM   #7
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We had the Fac.repair guys move our F/W pickup from the side of the tank to the bottom sump drain area. Youroo!!
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Old 04-03-2013, 10:23 PM   #8
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We had the Fac.repair guys move our F/W pickup from the side of the tank to the bottom sump drain area. Youroo!!
Thank you youroo. I have to fill a lot of water just to make it usable. And, if I was to ever boondock, that is a lot of useless water.
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Old 04-04-2013, 01:55 PM   #9
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Thank you youroo. I have to fill a lot of water just to make it usable. And, if I was to ever boondock, that is a lot of useless water.
It is not entirely useless. You could capture it in a bucket from the low point drain. Annoying, but should be possible.

My Solera has a 35 gallon tank. It is actually a 32 gallon tank, the brochure is wrong. I can only pump 30 gallons. I have 2 gallons of the same problem you have. And we almost always boondock.
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Old 04-04-2013, 04:26 PM   #10
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It is not entirely useless. You could capture it in a bucket from the low point drain. Annoying, but should be possible.

My Solera has a 35 gallon tank. It is actually a 32 gallon tank, the brochure is wrong. I can only pump 30 gallons. I have 2 gallons of the same problem you have. And we almost always boondock.
Mine has about 10 gallons left and it begins sucking air. I will try and measure tonight....
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