Quick & Easy Graco Airless Paint Sprayer Pump Disassembly

If you're stuck on site trying to get out of trouble, or tinkering in the shed to diagnose a problem, we'll walk you through the quick and easy way to pull apart your Graco Endurance piston pump.
This pump is suitable for Graco airless paint sprayers from the 190PC Express, through to the Ultra Max II 595PC. We'll walk you through common causes of priming and pressure-building issues, and what to look for as you work your way through the pump assembly.
For repacking your pump with the official Graco Pump Repair Kits, please see our guide here: • How to Repair and Repa...
Let us know in the comments what repair guide you'd like to see next! And of course, if you ever get stuck, shoot us a message, DM on insta, or give us a buzz.
See a written breakdown of the video
►goind.com.au/blogs/articles/g...
*See our genuine Graco parts used in this service:
Graco Pump Repair Kit 18B260 (190PC Express, 390PC, Ultra Max II 490/495/595PC)
► goind.com.au/products/graco-p...
Graco Pump Repair Kit 248212 (Ultra Max II 695/795PC)
► goind.com.au/collections/pump...
Graco Pump Repair Kit 248213 (Ultra Max II 1095PC)
► goind.com.au/collections/pump...
Graco Throat Seal Liquid (TSL) Fluid
► goind.com.au/products/graco-t...
Ultragrime Pro - Multiuse Industrial Wipes
► goind.com.au/products/ultragr...
Follow Us @go_industrial
Website ► goind.com.au/
Instagram ► / go_industrial
Pinterest ► www.pinterest.com.au/go_indus...

[@maxcore2023]

oooh man, you save my butt!. Had to solve the problem at the clients home. Glad I find this video.

[@busybee5621]

Good video, Nick! However, at the end of assembly those dog years on the lower intake, housing should be tapped with a hammer to snug that seat up against that O-ring. Bottom housing has a cut, and that O-ring needs to be set down in the narrower part to make sure it doesn’t blow out during operation. Way to go, keep them coming!

[@jovanlee9437]

Today my graco 390 Was given problem Went on to youtube Found this video and it helps so much with my machine. This amazing video helped me complete 9 units. Thanks for this informative video 👍🏽

[@GOIndustrial]

Glad you got it sorted! Thanks for watching 🫡

[@PepeCorona-ej1ej]

​@@GOIndustrialthanks for the video. blessings

[@OhioShaves]

Thanks. Just saved me $400

[@GOIndustrial]

How good! So glad to hear!

[@Lanzend57]

Effing great, mate!

[@GOIndustrial]

Thanks a lot!

[@jeromiemcknight1766]

Beast mode I’m the only one I ever knew how to do that very details !my 390 spray pump wasn’t priming I had to get boil steaming water and feed the filter area on the top i pure the water to wake up my pump heart again so much yucky stuff was coming from the top filter area from the steaming water it’s crazy these equipment like another human

[@CarlosGarcia-pe4tz]

Exelent Video Gooday folks bye-bye 😊

[@sudathperera1753]

What a beautiful video. Very helpful. Thank you very much.

[@rokebypeirce3729]

Fantastic Nick, thanks for the vid. Very helpful 👌

[@SergioGonzalez-tf9kq]

WOW what a great video!!!! Thank you for your help. God bless you.

[@GOIndustrial]

Always happy to help! Let us know if there’s any other guides that’d be useful 🙌🏼

[@frnkjones40]

Thanks for the upload

[@georgesorisho1681]

Very informative video, thank you.

[@GOIndustrial]

Thanks for watching!

[@LeslieWood-qb8do]

You are great you explained everything so perfectly 👍👍❤️🙏

[@robsummerhayes6999]

What a great and informative video, thanks!!!

[@danielpeirano5638]

Muy instructivo .muy bueno.gracias por tu tiempo.😅

[@eltransero35]

Found out my packing were bad!! No wonder I was missing pressure. Thank you!

[@Aces77777]

Great video Now I know how to clean it better

[@mikepatterson6420]

this was very helpful thanks a lot

[@jiangong5998]

Much appreciate, ...Painting Master.

[@LeslieWood-qb8do]

Good job pe we thank

[@mohammedaneesbs9594]

Superb sir ❤

[@GOIndustrial]

Thank you my man ❤

[@SheldonClayPage]

Hey. Question; What soundtrack are you using for this video? I love it!

[@jktrading6528]

My Graco 390 has paint or water coming out of the pump through the G. Any tips on what could be? Thanks

[@GOIndustrial]

More than likely one of your packings on the piston has split or warped - this will often cause fluid leaking towards the top of the pump & piston where the 'G' sits on your 390PC. I'd recommend following this tutorial to inspect your packings, or purchase a replacement Endurance pump!

[@SergioGonzalez-tf9kq]

My graco just stopped painting😢

[@New-Breed-Drywall-And-Paint]

GRACO GURU , need your help brother . Think I smoked it this time . I won’t give back story just straight to the point Cleaned 395 ball and seat ………. Put the washer back in and installed seat and ball backwards …………..ran airless and instantly knew I put it backwards as it was just knocking weird .!……..I was also changing the suction hose for a hopper like I do for cabinet jobs ………( might be important ) ………… I reverse the seat and ball and it still wouldn’t prime ….. I loosened the lower housing and it began to prime instantly…….. I tightened it again and it stopped priming …… so now it’s got to be on their very loose ( the main housing that holds the seat and ball inside .) im talking really loose , the min I tighten it a little it stops priming instantly ….. it’s not leaking paint though …. What do you think I did , other than mess up badly .

[@stephensmiles7787]

Great video ❤ So informative and useful!

[@GOIndustrial]

Thanks so much! Glad you enjoyed the guide.

[@DBOYOUNG]

When and how do I apply the TSL

[@GOIndustrial]

We recommend applying 2-3 squirts of TSL before and after spraying. This can be applied with a small TSL bottle to the top of the piston pump - generally where the 'G' pump cover sits. We can put together a separate video on applying TSL if that helps?

[@ArereHeauVagi-me8lu]

Trouble shooting