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Old 08-17-2022, 09:11 PM   #1
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2004 Mountain Aire 3781 water coming out of water hose hookup

With the water pump on, water will shoot out of the city water hose hookup. I am guessing there is a one way valve that is broke? Maybe the switch to fill the water tank?

Any ideas?

TIA
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Old 08-17-2022, 09:25 PM   #2
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One way valve in the city water hook up .

Under 10 min install once you have the part .

EDIT : I should mention , when you pick up the city connection , grab a package of these cone connector seals .
The original in the fitting you're removing from the connector , might not seal to the new part.
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Old 08-18-2022, 06:40 AM   #3
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Quote:
Originally Posted by Skip426 View Post
One way valve in the city water hook up .

Under 10 min install once you have the part .

EDIT : I should mention , when you pick up the city connection , grab a package of these cone connector seals .
The original in the fitting you're removing from the connector , might not seal to the new part.
Thanks. You don't know where it is located by chance? I followed the line some and didn't see it.
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Old 08-18-2022, 10:05 AM   #4
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The one way valve is internal in the hose connector , mounted on the water bay service board .

Three screws holding the connector to the board , and ( at least on my coach ) there was enough slack in the plumbing pipe to pull the connector out of the board and undo the plumbing connector .
Other installations may require you reach up behind the board to disconnect the plumbing.

EDIT: I found this exploded view of the connector , showing the one way valve in pieces.
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Old 08-18-2022, 04:03 PM   #5
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The one way valve is internal in the hose connector , mounted on the water bay service board .

Three screws holding the connector to the board , and ( at least on my coach ) there was enough slack in the plumbing pipe to pull the connector out of the board and undo the plumbing connector .
Other installations may require you reach up behind the board to disconnect the plumbing.

EDIT: I found this exploded view of the connector , showing the one way valve in pieces.
Thanks much. Local RV parts store had the right part and it is fixed now.
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