Question about Wagner Power Products 0154842 Medium Spray Gun Filter, 50 Mesh

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How to remove the Prime/Spray assembly on the Wagner Paint Crew. The Prime/Spray knob is held on by a retaining clip which I can't figure out how to remove without resorting a hammer and pry bar and risk damaging/destroying the knob. I am having a problem with the machine not building up enough pressure to spray, and I am guessing that maybe the prime/spray valve assembly is clogged and/or rusted but I don't know since I can't get at it.

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You can unscrew it without removing the plastic part - just use thin vice grips and get a piece of the metal nut, unscrew down (counter clockwise) and it should come off with average pressure. I checked mine, not much to go wrong there, then screwed back in. I have similar problem with pressure, it is likely a worn O ring. Seems to be in the outlet valve as I replaced some of the inlet valve rings and same effect. Research says the outlet valve is the problem if paint comes out of the squeezed nozzel while in Prime mode, which mine does, and is likely not building the pressure as some paint is flowing back through the worn outlet parts.

Posted on Feb 25, 2011

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Posted on Jan 02, 2017

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1 Answer

Remove and Install prime/spray valve Wagner paint crew airless paint sprayer?


Was the unit purchased new or used? The price of a new is about $125-170. This unit is for homeowner occasional use, not for large jobs.Was the unit working on the previous use? If so were the cleaning instructions followed and not shortcut. If paint is failed to be totally removed on cleanup it will dry inside unit.There are very few replacement parts for this unit. If the unit is not working take wrench and try to remove prime/spray valve. You will have to remove knob to access this part.

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Does a Wagner Paint Crew sprayer take lubricant?


The Wagner Paint Crew airless sprayer does not require oil for its operation like full professional sprayers. The piston is off-set from the pump chamber with the inlet and outlet valves opposite each other, however you need to protect the parts from corrosion between use and Wagner recommend running some light oil through it after cleaning. If you will be using it in a day or so for water based paint, you could run a 10% solution of their EasyGlide through it.

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Won't prime


You either have a stuck ball valve, or a leak in the paint suction

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Unit won't prime,


YOU HAVE A STUCK INLET BALL
Have the unit in water, pressure relief valve turn the machine on and tap with a hammer at the inlet ball, This frees it up 90 of the time.
Otherwise the machine need to be disassemble

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Will not prime


Most of the time when a unit will not prime it is because of a stuck inlet ball, I would put the intake in water turn the machine on to bleed. Then tap the machine where the paint comes in. 90% of the time this will get it going. Sometime you can stick a screw driver into the inlet ball and free it up. If this doe not work you need to take the machine apart and cleanor you have worn out packing.

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Jan 23, 2014 | Wagner SprayTech Wagner Airless Paint...

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Have a Wagner Paint Crew and it started out fine and then after a half hour or so, it gradually lost pressure to a small stream, I was using new paint and I cleaned the hose, screean, intake valve, and...


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Why does my gun keep spitting


Spitting is usually caused by not filtering the paint through a strainer (made for the purpose by the paint manufacturer). The paint debris blocks the paint for just a moment, then spits it out. Easy fix!

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Wagner paint crew won't build pressure or shut off. Can I test the outlet valve or the inlet valve? Or just start buying parts and hope I get the right one. ??/ Thanks..


1. Does it pump paint in PRIME position. If yes, then the outlet valve assembly may be stuck or bad.

2. If it won't pump paint in the PRIME position, the inlet valve may be stuck, just poke your finger down the inlet hole (machine off) . It is spring loaded and should move about an 1/8".

3. The worst option is the pump piston if froze. To check: remove the plastic hopper assembly, comes off with about 4 screws from underneath. The whole thing just pulls off. Now you can see the inlet assembly with two O rings. Use the white plastic hex shaped tool comes with the spray, and stuck on the lower base of the unit. Unscrew the inlet assembly. If clean enough, you can see the end of the piston. It's about a 1/4" diameter. Turn the machine on for a moment and you shoud see the piston move back on forth. If it doesn't the piston is froze. Good Luck with that.

Dec 08, 2009 | Wagner Power Products 0154842 Medium Spray...

2 Answers

Wagner Paint crew - No pressure


In order of likelyhood:

1. There is an inlet valve where the paint first enters from the hopper. With the machine off, you can poke your finger all the way down the hole. It's spring loaded and will depress abouta quarter inch. If the inlet valve is stuck no paint will pump in PRIME or SPRAY position.
2. In SPRAY position. Motor runs for a few seconds then turns off. This means the pump is working. When you pull the trigger, if you get poor pressure, the problem is in the gun. Unscrew the handle and remove the filter. Clean out everything you can, and replace filter if necessary. Also try turning the spray nozzle 180 degrees and spray to clear if necessary.

there are more things that can go wrong, but these are the most likely.

Jul 08, 2009 | Air Tools & Compressors

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