Question about Campbell Hausfeld Airless Spray Guns & Accessories Airless Sprayer 0.42 Gpm, 2/3 Hp, 50 Foot Hose, S150G Gun, X Tip & Filter, Sv Cart

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AL2340 will not prime. Motor runs but cannot get it to prime

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  • Anonymous Apr 26, 2009

    I had the same problem but this advice fixed it. The water worked like a charm! Thanks "PC_Tech50" !

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I worked at a tool rental center when I was going to college and learned many useful tips / tricks about airless sprayers. Airless sprayers have two check valves/balls that can stick on their seats or stay open due to chips of paint on seat. Easy method to prime is to remove intake filter from machine, tilt the machine back far enough so that the pick-up tube is pointing up high enough to pour water in tube until full; hold in this position and turn on machine. If water is sucked in turn off machine and tilt machine into pail of water and restart to check for prime. If it still will not prime remove water from pickup tube and use air pressure into tube with bypass valve open. Air pressure will attempt to release the stuck lower check ball. If air pressure does not release stuck ball you may have to use physical pressure against ball. If lower check ball was stuck you can assume that the upper check ball is probably stuck also. An aid to loosen stickey valves is to pour solvent into pickup tube with machine tilted back as before leave overnite. Enjoy

Posted on Dec 11, 2008

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  • Contributor
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I actually own one of those I use once in a great while mainly for my power roller which is maybe twice a year (maybe)
It's not really an "Airless" it is a diaphragm pump it runs constantly unlike an airless which is mainly a hydraulic pump which compresses the paint to whatever setting you have the pressure valve to, there are no check balls per say but the setting knob is held on by a set screw pop it off and look inside I think there is one plastic marble look for anything obvious like dried paint-

Posted on Jan 24, 2015

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Posted on Jan 02, 2017

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