Question about Wagner 1/2HPPaint Pump Sprayer

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The pump "stuck"

I have wagner paint pump and it isn't pumping the paint anymore, I think that the paint has dried up and is blocking the paint.
How can I check if this is really the problem and how to solve it?
How canI open the pump and pour inside some liquid in order to "de-block" it

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I think you do know that you did not properly flush and clean the pump after the last
time you used it......If it is a diaphragm pump, remove the inlet valve and make sure
the valve and spring are perfectly clean....Soak it in paint remover for a day or so
if needed.....Remove the retaining nut which is covering the outlet valve......Clean the
very, very small ball and spring....DO NOT LOSE....Replace all parts when clean....
Also check your hydraulic fluid in the pump's sump.......If it is a piston pump, remove
the inlet valve and make sure the ball is free and not stuck to its seat.....Tilt the pump
on its back and look up into it.....With a pencil see if the other small ball in the piston
is also free....Try to pump warm water through the cleaned pump....Without hose or gun......If it pumps fluid, replace hose and gun without spray tip....Test for flow again.
Then finally replace the spray tip......Chase out the water with the paint.....
The Pump Doctor

Posted on Oct 23, 2008

  • philip kaye
    philip kaye Oct 24, 2008

    huc7986, is just seems that you have TOO MANY problems......The Pump Doctor

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