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05-21-2014, 11:27 AM
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#1
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Senior Member
Join Date: Jun 2013
Location: Bay St Louis, MS
Posts: 112
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Problems when using fresh water tank
I tried to use water from my fresh water tanks and it did not work very well. I can hear the pump running then it shuts off. When I open a water faucet in the coach, the pressure is fine for the first 5 or 10 seconds then it goes down to a trickle. I hear the pump running and if I wait until it shuts off again, I will have pressure for another few seconds but then it will slow down to barley a trickle again. Could this be the sign of just a worn out pump or something else that I should check as well?
Any suggestions would be helpful.
Thanks!
Bryan
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05-21-2014, 11:49 AM
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#2
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Senior Member
Join Date: Sep 2013
Posts: 238
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Sounds like the pump can build up proper pressure but can't meet volume demand. First thing I would check is everything between tank and pump. Hose kinked, inlet screen on pump, blockage at outlet of freshwater tank. Try putting your winterizing hose in a jug of water and drawing out of it to see if it can meet demand
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05-21-2014, 12:07 PM
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#3
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Senior Member
Join Date: Jun 2013
Location: Bay St Louis, MS
Posts: 112
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Ok, I first tried to get the pump to suck water in from a gallon jug through the winterizing hose. No luck. Next I removed the inlet screen on the pump and it is clear. I even ran the pump with out the screen and put my finger over it and I felt no suction at all. This leads me to believe the pump is bad.
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05-21-2014, 01:21 PM
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#4
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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Sounds to me like one of the following problems.
ONE (Most common) a kinked hose, or a partially open valve or a clogged strainer (either the tank outlet or the pump inlet) is restricting water flow, the pump bulids up pressure, the water heater acts like an "Acumulator" (Pressure tank) and provides pressure for the first gallon or so.
option two (happened to me) pump was sucking air. due to a screw loose on the pump body, NOTE this can happen anywhere on the inelt line.. I also had a water leak,, A bit of application of a driver and it was fixed.
__________________
Home is where I park it!
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05-21-2014, 01:28 PM
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#5
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Senior Member
Join Date: Jun 2013
Location: Bay St Louis, MS
Posts: 112
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I looked around best I could and I do not see any leaks or kinks in the hoses. I disconnected the water line just before the pump and water is flowing from the fresh water tank down to the shut off valve. If I suck on the hose when valve is open, I get water all the way to the fitting that screws on pump.
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05-21-2014, 02:57 PM
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#6
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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Is the city fresh water valve turned completely to the city side of valve after filling the fresh water tank and is the outside shower faucet closed?
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05-21-2014, 04:14 PM
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#7
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Senior Member
Join Date: Jun 2013
Location: Bay St Louis, MS
Posts: 112
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007,
I don't have city water hooked up to the RV. The city side valve is in the off position and the fresh water fill valve is turned off. The outside shower faucets are closed. I turn the pump on and that's when I get a short burst of water but then it dies out. If I wait for pump to shut off, I get another burst. It seems like it cannot keep up the pressure while pump is running.
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05-21-2014, 04:17 PM
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#8
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Senior Member
Join Date: Jun 2013
Location: Bay St Louis, MS
Posts: 112
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Pump will not even pick up water through winterizing hose when I tried it.
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05-26-2014, 05:38 AM
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#9
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: May 2012
Location: Louisville
Posts: 134
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If there is a kink, the pump won't pick up what it can't expel. Check to be sure there is no kink in the hose on the other side. If there is a kink it won't suck much because it can't.
__________________
Byron Songer - fulltiming out of Louisville, KY
2002 Newmar Dutch Star on Freightliner/CAT, 2016 Lincoln MKX, Air Force One
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05-26-2014, 06:48 AM
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#10
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Senior Member
Spartan Chassis
Join Date: Dec 2011
Location: Anywhere, USA
Posts: 451
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Try removing the pump outlet connection to the RV and again using the winterizing tubing. If no go replace pump as you have then isolated it and it still will not pump. Good Luck!
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05-26-2014, 07:04 AM
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#11
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Senior Member
Newmar Owners Club
Join Date: Feb 2012
Location: Elgin, SC
Posts: 291
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My pump on my old Winnie Froze up last winter...
Had to buy a new one for $65.00...
Installed a small muffin fan to push cabin air into the pump's area so it won't freeze up again...
I had to remove my fresh water tank to get to the pump...
Can be a hair puller but smile & keep at it...
__________________
2001 Dutch Star 3666 (Workhorse gas)
Lugoff, SC
KE5FTF...Bob & Kathy
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