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Old 03-14-2013, 03:35 PM   #1
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2010 Challenger 37KT Water Pump

Ok, before I try to locate the offending water pump and replace it, could this issue be caused by something else that I am not knowledgeable about. The pump sounds normal noise-wise, but is continually pulsing up and down at a medium rate. One tap open or two taps open, doesn''t matter. Very annoying when having a shower. Seams to build up the pressure, then die off over and over.

Any kideas would be helpful.
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Old 03-14-2013, 03:51 PM   #2
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An accumulator tank would help. It would cycle longer but less often. As far as I know, they all do it though.
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Old 03-14-2013, 11:29 PM   #3
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I will look into the tank; past class A motorhomes and trailers all do the noisy chatter which can be somewhat corrected by securing some of the water lines to a wall, but this pulsing think is a new one for me.
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Old 03-15-2013, 03:50 AM   #4
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I'm most often hooked to a pressurized system so for the few times I'm not, I sort of got used to it and just accepted it as a part of the motor home experience.
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Old 03-15-2013, 11:48 PM   #5
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I know what you mean, but we drive 4 days home and we like our showers. I found the waterpump under the bathroom vanity; very odd to have the pump inside the box, so to speak; all past units have been in the "BASEMENT" somewhere. I will look at it tomorrow in daylight to see if there is a filter bowl attached to the inlet, or if adjusting the :SCREW" will improve things. I do have a spare pump. I don't even know if there is a built in system filter on this unit. Our Bounder had one.

Gotta get rid of that annoying pulsing somehow. I am like a dog with a bone; I won't give up.
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Old 03-21-2013, 11:17 AM   #6
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mine does not do that unless more than 1 fixture is open no problem with shower.
Do you have an outside shower make sure the valves are off not just the handle
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Old 03-21-2013, 11:20 PM   #7
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Yes, I have done all that; with the pump on and all taps closed the pump stays idle as it should.

Found out something new today; phoned up Damon expecting to be able to order parts directly. Nope, must go through an authorized dealer. One thing about Fleetwood, I could order all and any parts I wanted from their parts line. Much better. Authorized dealer here in Palm Desert didn't even return my call.
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