SOURCE: 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.
SOURCE: Wagner Power Sprayer will not lift paint from the plastic bottle
pump may be bad on sprayer or gasket on it
SOURCE: Wagner paint crew won't build pressure or shut off.
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.
SOURCE: paint sprayer won't pump
Ok, go to campbel hausfeld web site and download a manual for your sprayer : http://www.chpower.com/webapp/wcs/stores/servlet/XManuals?langId=-1&storeId=10051&catalogId=10001
Find your model number and look at parts view. Pay paticular attention to the inlet and outet valves. They must be absolutely clean to function. These pumps must be thoroughly cleaned when finished.
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