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Old 11-21-2017, 02:47 AM   #1
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Default graco 395 cleaning upper ball cage

After spending $700 on replacing the pump on my 395 I now clean the lower ball cage every time I use it. It was seized with paint.
So any tips on cleaining the outlet ball?

Also, it stopped working after I had sprayed oil based sealer through it, even though I cleaned it thoroughly with 3 different cleaners, including this AMAZING product that will dissolve paint and nothing else...
https://colorex.co.nz/shop/products/...cleaner/?pdf=1

I know what happens when you mix oil based and latex together in a spray unit but I cleaned it thoroughly I used mineral spirits, denatured alcohol and kumclean.
Could it have been clogged through years of build up? The lower ball cage was quite clogged with cured paint. It was stuck GOOD.

Last edited by mv8710; 11-21-2017 at 02:51 AM..
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Old 11-21-2017, 03:11 PM   #2
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The reason the ball gets stuck after you fully clean the unit is because you drained it. Never use water as the last rinse. After cleaning, run some mineral spirits through the pump to purge out all of the water. Release the pressure, but leave the spirits in the pump until the next use.

There is no good way to get at the upper ball without dismantling the pump.
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Old 11-21-2017, 07:40 PM   #3
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Quote:
Originally Posted by mv8710 View Post
After spending $700 on replacing the pump on my 395 I now clean the lower ball cage every time I use it. It was seized with paint.
So any tips on cleaining the outlet ball?

Also, it stopped working after I had sprayed oil based sealer through it, even though I cleaned it thoroughly with 3 different cleaners, including this AMAZING product that will dissolve paint and nothing else...
https://colorex.co.nz/shop/products/...cleaner/?pdf=1

I know what happens when you mix oil based and latex together in a spray unit but I cleaned it thoroughly I used mineral spirits, denatured alcohol and kumclean.
Could it have been clogged through years of build up? The lower ball cage was quite clogged with cured paint. It was stuck GOOD.
https://colorex.co.nz/wp-content/upl...clean-MSDS.pdf
No magic just Xylene & MEK
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