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Old 08-03-2014, 05:09 PM   #1
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Water Pump

The pump seems to pump water back into the hose used to fill the coach. It is not a large volume but whenever an outlet is open and calling for water, some water is also forced out of the intake and through the hose. Anyone ever seen this before or have any suggestions. It's a 2008 Fleetwood Excursion, I have only had it for a month.



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Old 08-03-2014, 05:28 PM   #2
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Ok, I'll see if I have a handle on your complaint.

The coach is hooked up to city water, you have the 12v pump turned on , when you open the fresh tank fill valve the pump starts running.

If this is what's happening, it's a normal situation, any time the pump sees a pressure drop on the demand side ( taps ) it will run.

Same if you , are hooked to city water with marginal pressure, with the 12v pump on , and open a tap in the coach the pump will run, and mix in tank water to try and maintain 40 psi line pressure to the tap. Normal situation.

However if there is no pressure supplied to the city water hook up and when the pump runs, some water from the coach is forced out the city hook up, then you have a problem with the back flow check valve , just behind the city water hook up.
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Old 08-03-2014, 05:42 PM   #3
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After I add water to tank, I disconnect the hose from the "city" water spigot and put the hose it back in the utility box. We ran out of water on our first boon docking trip, I thought that was strange, but was still learning about the coach. This evening, after being out for a week, I noticed the utility box filling with water. After some investigation I found that the pump was forcing water back out of the water tank, through the hose. Sounds like I need to replace the check valve. Do you think the valve is right behind the "wall" that the intake outlet is mounted?


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Old 08-03-2014, 06:00 PM   #4
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Can't say for sure on your unit , but that's where mine is, I can see it when I change the washer/screen in the hook up , it may even be part of the hook up. Several others with problems like yours , have gone to a screw in plastic cap instead of the rubber flap, that you probably have; like older TT used when the water hook up was on the out side of the RV. Saves changing and $$.
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Old 08-04-2014, 10:04 AM   #5
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There should be a check valve in the hose inlet port. If water flows back out through that, the check valve is broken or just stuck open. A bit of dirt can do that.
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Old 08-04-2014, 10:17 AM   #6
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Quote:
Originally Posted by Gary RVRoamer View Post
There should be a check valve in the hose inlet port. If water flows back out through that, the check valve is broken or just stuck open. A bit of dirt can do that.
X 2, 3, 4 on the check valve in the water inlet.
Sometimes they stick, (wiggling it with a dowel, or ballpoint pen, often fixes mine).
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Old 08-04-2014, 11:22 AM   #7
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My check valve stuck while on the road. We didn't pick up on it until we stopped and discovered that it had almost emptied the tank into the basement. That was lots of fun to dry up. Replace the valve they are cheap and you don't want it to reccur.
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Old 08-07-2014, 08:54 AM   #8
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It is the check valve... Thanks for the suggestions
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