[paintslinger]

i have a 7900 graco that wont pump when you flip the switch. I have changed the switch circuit board any ideas

 

[HomeGuardPaints]

Plug it in?

J/K i don't know the first thing about sprayers

 

[paintslinger]

gas its a beast

 

[ewingpainting.net]

This is why I hate elect. Pumps. My guy have blown the motor on at least 5 pumps. They would plug it in the 220 outlet. BAM $600.00 bucks bye bye.

 

[paintslinger]

it is a gas pump motor works not pump

 

[ewingpainting.net]

So the piston is not moveing or its pumping but not drawing the paint. I'm sure you checked all your fluieds?

 

[bikerboy]

Here's the repair manual.

http://wwwd.graco.com/Distributors/DLibrary.nsf/Files/309412/$file/309412e.pdf

 

[SPRAYERMAN]

if the pistons not moving, then it's probably a clutch problem. Do you hear the clutch trying to engage? If the piston is moving then clean out the trash , or repack it.

 

[paintslinger]

thanx