I'll guess the ball is stuck. Try priming it again and while the pump is running in the water rap the pump where the intake hose connects.

 

Hi Dale

Thanks! I checked the hose & it's clean. Ran the sprayer & banged on the pump with a wrench. The ball is still stuck, but it did put out a little water so I know you're right on!

I'll try it again tomorrow when it's warmer & if I can't knock the ball loose, I'll take the pump off & check it out.

I'm banking it's this simple cause the Construction Gods won't like me if I have to rebuild more than the pump!

I'll keep ya posted.... JB

 

Try running mineral spirits through it, it has a lubricating property that may help. Many people run into this problem when they just flush the pump with water and leave it. While the check balls are usually stainless steel, the seats or other parts may be regular steel or cast iron. I have 3 pumps, one is an older Graco that has a cast iron part in it and if you flush it with water and don't run thinner through it, the part rusts and causes problems, usually a sticking check ball.

Now, every time I use one of my pumps, I always clean it real good with water (hot water if available), then flush thinner through it. Sometimes the pump will sit months between uses and I used to have problems with rust or gunk in the pump. Now any problems with the pump priming or pumping are practically non-existant

 

Try throat seal it will lube the inside's

 

That... just sounds downright dirty. :w00t:

 

FYI, I just learned this from a Graco rep not long ago. Throat seal is not a lubricant. It is a mild acid. The only reason you use throat seal is to keep paint overspray from drying on the piston rod. Dried paint on the piston rod causes premature packing wear.

 

FYI, I just learned this from a Graco rep not long ago. Throat seal is not a lubricant. It is a mild acid. The only reason you use throat seal is to keep paint overspray from drying on the piston rod. Dried paint on the piston rod causes premature packing wear.

And Ball Wear:w00t:

 

Nothin worse than premature ball wear

 

Whenever my ball get chipped and gouged I can't hold fluid pressure.:bangin:

 

Ball wear, piston lube, fluid pressure, packings, tips, whip hose, spread rate, stripper, and CAULK. Ha Ha, UH Ha Ha. Painter Humor. Hah Hah.:lol:

 

Thanks to all for the continued support and assistance. I have come to you with many questions and found great input, but never really had anything to contribute. Today I encountered the same issue with my Greco 495 and tried all the suggestions to no avail. However, after checking a few more clog possibilities I found it was the Deflector at the end of the drain hose.

 

holy 5 year revival!

 

If the information is good, it doesn't get old. I was actually really suprised that the exact question I had was here and had been sitting idle for so long.

 

Some Things Are Meant to Last!

Well Hello 2014!

I just checked back in after all these years & you're all Still Here! Gotta hang out here more often!:thumbsup::clap:


"If the information is good, it doesn't get old. I was actually really suprised that the exact question I had was here and had been sitting idle for so long."

 

Well Hello 2014!

I just checked back in after all these years & you're all Still Here! Gotta hang out here more often!:thumbsup::clap:


"If the information is good, it doesn't get old. I was actually really suprised that the exact question I had was here and had been sitting idle for so long."

Welcome back! :thumbup:

 

So...you never told us if you got that airless working.

 

It's All Because of You All!

YES I DID Thanks to You All with your painter's humor...lol!

Remember the Russian in Armegedon, "This is Russian spaceship! I am famous Russian astronaut...Don't touch anything!" as he smacks the control panel with a huge wrench!

Well the next morning I had a guy coming out to buy it. I had just polished up the exterior & was fed-up that it wouldn't draft so I hit it a 5lb sledgehammer. :wallbash::hammer:

With fingers crossed I flipped the switch & WOOHOO she worked! :whistling

A really nice young painter working to expand his new business took it for $500. Was a good deal for us both! :thumbup: