Question about Dishwashers
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Posted on Jan 02, 2017
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.
Posted on Dec 14, 2009
SOURCE: I have a wagner 404
It sounds like one of two things...
either the pump seals need replaced or the motor is not running fast enough under load.
Check for loose wiring on the motor, the brush holders and condition, and make sure that the air path to cool the motor is clean and free of obstructions.
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c
Posted on Aug 03, 2010
SOURCE: How to remove the Prime/Spray
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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