Repairing a graco 390 PC . Airless sprayer not priming
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- čas přidán 22. 07. 2024
- If you have a situation of your sprayer not priming while your at work , this shows you how quick you can resolve the problem and get back to work without losing to much time and money.
Tools needed
Hammer. - Jak na to + styl
I have three days remaining on this current job and my sprayer stopped priming. Thank you for this video! Back to work in just 30 minutes!
Thank you sir!! Husband was crazy frustrated with our sprayer not working... did everything you said and it primed beautifully! Pulled a nasty slug of old paint out of it 😄
❤🙏🏻❤
Good video. Sometimes all it takes is a couple good whacks with a hammer right where the balls sits to loosen it up. But should definitely be taken apart and cleaned frequently
Thank you, my machine was blocked up, tried everything from your video, works again 👍🏻 saved me from buying a new one
Glad to off helped 👍
This worked for me. Thanks a million!
Thanks so much! It worked my 390 is back to life !
Glad to help you , nothing worse than to watch your spray machine stop working and not knowing if you have to send it off to get fixed.
Great video man! Greetings from Texas.
Hi mate I had the same problem today and found your video which helped me out big time 👍 just thought I would say thanks for the video and advice on how to fix this problem
Thanks
Repro decorating
Thank you Rich
Thanks!!!! Ready to fix it and go. Thank you 😊
Worked perfectly! Thank you!!
Hey man thanks so much save me a lot of money
Mate, you’re a life saver ❤
Thanks joe
Thanks Colin my spray stopped mid job so I rand the paint shop straight away for a new pump. Thank god they didn’t have one so I searched you tube, found your video followed your first step and I’m back spraying in 2 min.
Good news, I owe you a beer
Bad news you’ll have to come to Australia for it (at least the beer is cold here)
🤣🤣🤣🤣 mate I'm coming for that beer , I'm sick and tired of the weather over here .on a serious note I'm glad that worked out for you and you saved yourself some money , there's nothing worse than spend money then to realise there was no need to spend it in the first place.
Some info for anyone with this problem: I had a Q-Tech QP-019 not prime - the bearing was fine! After a couple of days of head scratching and some research I found an article where someone recommended hooking the intake pipe to the water mains. That worked for me and after a few tries priming with increased intake pressure, a blockage blew out of the machine. I didn't have the spray hose hooked up in readiness for any junk coming out.
Lacquer thinner then mineral spirits will keep the pump clean as a whistle
It will eat the seals..use pump armor blue on Amazon. Do not buy from local dealers. It's 75% cheaper and you can buy whole parts, instead of a rubber grommet.
Great stuff.
I just repacked my Graco 395st but it won't prime. I followed the instructions meticulously. This is the 3rd time I've repacked it in 20 yrs and I have tons of pictures and notes so I know what I'm doing. It's got a new piston too. The cylinder is in good shape. Hoses are clear, no obstructions. Wacking it with hammer didn't help. Any ideas?
I will share my secret with you,never let the gun go dry,always keep the pickup,tips, ,handpiece and outlet in water,if the water goes off, drop some chlorine in it. The only time I've had trouble is when I take the gun in to the shop and it dries inside.
Thanks for that I've brought a new gun and I've only just put it on. It's been without a gun now for 3 weeks . Nice one , man I should of thought of that.
If you keep your gun in water too long it can dry out the pin and spring inside. This can cause the gun spit or not stop spraying when you release the trigger. An easy way to avoid/fix this is just remove the threaded cover on the back of the gun and squirt some throat seal on the spring and the pin inside the gun.
Hi mate love your videos. Can i ask when your switching from undercoat to finish coat do you have to flush the sprayer with water as in clean it first or can you just pop the suction hose into the new paint and run untill all undercoat is gone and top coat comes through? . Sorry mate probably really basic question but im new to this thank you for helping me.
Hello mick the best way I've found when swapping from one material to the next is to flush the paint out with water and as soon as you see water coming out of the prime tube , turn pressure down then swap over the paint and flush the water out until the paint comes through. What your doing is by flushing it out with a bit of water is so you don't get the two materials mixing when you first spray . Thanks for watching mate 👍🏾
@@camdecorations9779 thank you so much. You always respond 👍
if it still wont prime after cleaning, I have found if you put it in prime, poke a garden hose up the suction end and turn it on,
it forces it to prime , had to do this with my 595, not sure what happened but its been fine since.
Yes totally agree with that , also take the manifold filter off to make sure it washes any shit out of that region as well
Nice 1 Col. Still not even switched mine on not had chance to use it yet..
Mate you do not know what your missing out on , you wait till you use it , you'll love it
@@camdecorations9779 hi col how you doing fella.
how long does it take you to do for argument sake 3bedr from start to finish with the sprayer. ??? Regards les.
Your looking at 2 and a half days for a 3 bed house , 3 days for a 3 bed townhouse and 3 days for a 4 bed house. All these are houses without doors. Hope that helps.
@@camdecorations9779 top man!
Thank you Col..
And that first generator you had worked the sprayer OK ye.. ?
@@MrLeshop the generator worked fine I brought it from Amazon for about £170 but it only lasted a year . If you want it last you need to buy a gene with a Honda engine in it , preferably a stephill generator
Hi colin like your videos mate. I have been decorating for years and decided to get a sprayer .
I have got a graco 390 and I like your tip about getting a different gun for it .. I got a house coming up to spray and the customer has picked all dulux paint . What can I do to make sure it goes through better ... and what are good tips I should defo get .
Thanks mark
Hello Marco if its a house with furniture and carpets, I would go with the Warner hea tips , you can spray the walls and ceilings between 1400 - 1800 psi which Is great on limiting overspray .with the hea tips you will need to get the wagner spray guard. Spraying woodwork I would use the graco fflp tips 310 . You can use those at around 800 to 1400 psi
With dulux paints they are very harsh on the spray tips and the finish is not the smoothest. I found that you need to mix it at 3 litres or 2 and a half litres of water to 10 liters of paint. Very thick paint not great to spray not good to mix and as I said before very harsh on your spray tips. Next time try and talk your customers out of using dulux to spray with. Crown or tikkerilla anti reflex 2 emulsion is great to spray with
I see alot of people using a extension poles does that make a difference. .. thanks for the reply mate your a star ..
@@marcopolobigbeats127 with extension poles you'll end up with a of spits if you don't use a cleanshot , use your gun and a pair of steps for the hard to reach places
Back roll
Im trying to figure out what is causing my 390 to not maintain pressure. It will prime but after like 7 seconds of spraying it will take forever to rebuild the pressure. I have new filters, ive totally cleaned the ball out and i have a new rock guard or inlet filter. Cant afford to bring it to a shop right now either... ugh, if anyone has any ideas...
A drop in pressure usually means you have leaking seals so you will need to change your pump put a new one in and service your old pump so you've got it as spare
@@camdecorations9779 Thanks for the reply. Yes, I have money now and did exactly this. I appreciate your help.
Hi Colin.
Pick your brain.
Have you ever ad paint leaking from your manifold filter.
Any advice
Hi les no I haven't, I've not heard anyone who's had that problem either
Go onto the airlesspro website, get the number, and give them a call . They fix spray machines ,The guy name is phill he really knows his stuff, He should be able to help you
Let me know how you get on .
@@camdecorations9779 sorted my friend.
It's the O-Ring, when you unscrew manifold to clean filter ul see little white Oring, she gone...
@@camdecorations9779 for future reference part NO would be 104361
The bells though.. that's what happens when you work on Sunday haha
😂😂
Colin what’s happening with the videos. Not had one for ages.
Its been a bit hard to make . Its more about getting back up to speed at work after all the time off. I will be making some soon 👍
Share the video
Great, now take the bell out of that church..or break the arms of the ringer..
Thank you, but it would have been nice to actually see the parts you were cleaning to be sure they go back together correctly. As you washed them you were covering them with your hands and when you show them to the camera - you don't actually SHOW us anything.
Sorry mate , thank you for your input . I will definitely take that on board
Too much talking