Water pump sucking air - Dutchmen Owners

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Old 06-06-2020, 11:22 PM   #1
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Water pump sucking air

Began my sanitizing project same as the last 6 years but suddenly the pump won’t do it’s thing below 10 gallons. Any hints? Works fine from there to full. 2012 Kodak 181E. By the by, pulling with a diesel Canyon. Love it.

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Old 06-07-2020, 11:59 AM   #2
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May be a few problems. Number one would be the age of the pump, it may be time to rebuild it or replace it.

Number two, the pump only has a certain amount of lift. The lift is certified when new. The pump is 8 years or so old so the lift isn't like it was when new. Here again, replace or rebuild.

When the water level is high the lift on the pump is strong, as the level drops so does the lift, especially on an old pump.

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Old 06-08-2020, 11:50 AM   #3
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Pump seals are a likely cause. It could also be a leaky suction fitting or cracked suction line. PEC tubing will not crack (hard stiff plastic), but vinyl or other plastic (soft flexible) does sometimes.
Paul Bristol
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Old 06-13-2020, 09:05 PM   #4
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Sucking Air

I don't know if your pump has a filter, but I've had problems with the filter on my 2018 Salem FSX. The filter has an O Ring that may go bad and leak air.
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Old 06-14-2020, 03:47 AM   #5
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Bad hose

You might check the line running into the tank. It could have become loose on a bumpy road and is no longer sitting on the bottom of the tank
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