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08-15-2016, 05:00 PM
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#1
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2 Rivet Member
2015 Interstate Coach
MEDFORD
, New Jersey
Join Date: Feb 2016
Posts: 79
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Noise from Water Pump on RV pump
When I turn on the RV water pump I'm getting a hammering on metal noise, when pump is priming the water system. Sounds like its coming from behind 2nd row seats on curb side.. Its look like their is an access panel behind the seat. is that where the water pump is located, any suggestionsi what is causing the noise. ?? Is it air in the system??
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08-15-2016, 05:04 PM
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#2
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Rivet Master
2006 22' Interstate
League City
, Texas
Join Date: Jan 2015
Posts: 698
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You may need to clean the filter. The negative head pressure can cause some banging type sounds.
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08-15-2016, 05:07 PM
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#3
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Rivet Master
2013 Interstate Coach
Waterloo
, Iowa
Join Date: Jun 2014
Posts: 1,598
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pump is under the sink (pull out the lower drawer to get to it) on my 2013 Lounge EXT. On mine the area that you describe is where my toilet is and the access panel behind the 2nd row curbside is to access drain plumbing - I think.
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08-15-2016, 05:52 PM
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#4
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Figment of My Imagination
2012 Interstate Coach
From All Over
, More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,868
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Quote:
Originally Posted by Titus
pump is under the sink (pull out the lower drawer to get to it) on my 2013 Lounge EXT. On mine the area that you describe is where my toilet is and the access panel behind the 2nd row curbside is to access drain plumbing - I think.
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OP must have a Grand Tour. Those have a mirror-image floor plan.
__________________
I thought getting old would take longer!
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08-15-2016, 08:00 PM
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#5
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Rivet Master
2014 Interstate Ext. Coach
Sedona
, Arizona
Join Date: Jul 2008
Posts: 1,084
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If our Interstate hasn't been used in a while, air gets into the water lines and the pump rattles very badly. Only way to fix it is to open all faucets moving the lever from hot to cold and back a few times. Eventually it goes quieter.
Sent from my iPhone using Airstream Forums
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08-15-2016, 10:21 PM
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#6
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Figment of My Imagination
2012 Interstate Coach
From All Over
, More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,868
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Quote:
Originally Posted by UKDUDE
Only way to fix it is to open all faucets moving the lever from hot to cold and back a few times. Eventually it goes quieter.
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I just open the faucets halfway between hot and cold and leave them that way until they quit spitting.
__________________
I thought getting old would take longer!
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08-15-2016, 10:55 PM
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#7
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Rivet Master
Muskogee
, Oklahoma
Join Date: Mar 2011
Posts: 749
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Quote:
Originally Posted by RICKBETTY
When I turn on the RV water pump I'm getting a hammering on metal noise, when pump is priming the water system. Sounds like its coming from behind 2nd row seats on curb side.. Its look like their is an access panel behind the seat. is that where the water pump is located, any suggestionsi what is causing the noise. ?? Is it air in the system??
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What model Interstate do you own?
The pump tends to pulse. In fact, that's exactly how it works, with a rubber membrane that moves back and forth. If the pex pipe is laid to close and next to the sheet metal, it can vibrate against it, and that likely is the cause. Since I don't know your model, I can't say how to access it, but mine, like Progtag's, is on the other side and can be access by removing a lower drawer. I replaced mine with a variable flow pump, that is much quieter, but it still can cause a banging sound occasionally.
__________________
2011 Interstate WD/Lounge (since sold).
2020 Leisure Van WonderRTB
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08-16-2016, 11:39 AM
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#8
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4 Rivet Member
2016 Interstate Grand Tour Ext
Houston
, Texas
Join Date: Oct 2015
Posts: 333
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If you have a late model GT, the pump is under the freezer and accessible by removing two thumb screws holding the black vent cover. I have had to clean the screen filter twice in 10 months. It has been clogged with plastic shavings left in the freshwater tank from assembly. Not a big deal, but a nuisance. The signals were difficulty in priming, low pressure at the galley sink and frequent cycling.
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08-16-2016, 12:27 PM
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#9
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2 Rivet Member
2012 Interstate Coach
Westerville
, Ohio
Join Date: Sep 2015
Posts: 51
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I found that the water lines coming off the pump were vibrating against each other and other parts beneath the sink. I stuck pieces of stiff foam between the lines to isolate them. Helped quite a bit, but still wish it was quieter.
__________________
Bob
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08-16-2016, 02:19 PM
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#10
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3 Rivet Member
2012 30' International
Livingston
, Texas
Join Date: Jun 2015
Posts: 121
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I had the same problem. The problem was air in the line. I purged all the water lines... except I had forgotten about the outside shower. That fixed it.
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08-17-2016, 09:43 PM
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#11
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1 Rivet Member
2009 19' International
DURANGO
, Colorado
Join Date: Dec 2015
Posts: 9
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Hi! I grew up in Lake Pine. My Dad still lives on the lake! My brother is retired from the Medford Police Dept. I really miss the pizza there!
Well anyway, I had the same problem. It turned out it needed tightening. I believe over time the vibration of the pump loosens the screws. After tightening the banging went away. Good luck
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