Air Compressor Repair - pressure switch, unloader, and check valve
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- čas přidán 4. 09. 2024
- Watch this fix before you start buying parts. : )
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Pulled the pressure switch/unloader valve off yesterday, convinced the unloader was malfunctioning. All set to get a new valve or switch assy today. Late last night I went on YT and saw your video. This morning pulled the check valve out of the tank and lo and behold there's a piece of hard verdigris material stuck on the rubber seat of the check valve. Reassembled and she's a ripper. Cost zero. Thank you kind sir for this video, don't envy your job sanding down that boat. Cheers from Australia.
The only air compressor video that makes sense
I've been watching the boat build for years! Today my compressor messed up so I youtube it and here Doug is fixing the exact problem! Thanks Doug!
Glad to help
This is exactly what I went through BEFORE I watched this video. I see your description clearly says watch it before buying parts.
Glad I found this. You were correct about the check valve. Mine had a broken spring. Was able to replace it and now back in business. Great video, you saved me a lot of aggravation.
Nice work!
Functionally operates just as it should czcams.com/users/postUgkxiiMg_x4gIWeXMWfBnDdRnME4qJUAva4w holds pressure perfectly when not in use. Glad one of the other reviews pointed out that the bottom pressure release valve was open; thought it was defective at first.
You absolutely just solved my issue. I couldn’t figure out what was happening with the relief valve. I think I have a bad tank check valve too. Thx man!
I just finished watching a heap of your videos for entertainment so I could look for a video on how to fix my compressor and here I am again back at SV Seeker. My compressor has the exact same issue thanks Doug.
Putting together a compressor form a pile of parts. You have answered many questions with this short video. Thank you !
I have worked for managers that would have replaced the whole compressor when it broke, yet they would micro mange the time for tasks to be finished and treated overtime like it was the plague. Most things can be fixed, if you have the time, information, and parts.
thats a problem with management, and if the company goes bad, its the workers fault.
Managers keep the ponzi scheme going.
I worked for the top production custom motorcycle company. I live in Wichita Ks. One of the managers who's background was at a vacuum cleaner manufacturer, yeah he fit right into the motorcycle world. This guy had an industrial oiler installed into the paint shops air system. Oil and paint are arch enemies. Total digression, thankyou for the video. This will surely help me diagnose my unloaded problem. Custom air compressor, 2x 60gal tanks tied together with 1¼ steel line with a union in the middle. Huge pump on one tank and huge motor on the other. Unloader always drains the tanks down. I'm going to check that 1 way valve, today. Thankyou. Piss poor management runs quality workers right out the doors, and when there's only. Managers getting $100,000 and noone left to work, then I'm sure someone figures out they ain't getting $100,000 anymore.
@joshtonry4291 Oh yeah. You need a separator to trap the oil out in that system for sure. All of this is taught in trade schools, but is also just basic high school physics when you think about it too. Good luck.
It’s nice when you do search and click on the correct video the first time, very good explanation and great video. Thanks buddy!
I never knew I needed to check that check valve. I guess that's why they call it a check valve, cos ya gotta check that it is checking the return air. Will check it when next I start up my compressor. Cheers Doug.
LOL, poetic justice.
Stopped by last year after attending a concert in OK. Requested a minimum of twice to see your aircompressor, as my father was compressor tech. Intentions were to point out this common problem on all reciprocating systems, whether reed or disc valve pump. You have reed valves.
Commercial reciprocating compressors use disc head valves for reliability, and the check valve will have a 1/8" NPT female thread for the discharge line, not a second line to the head.
The check valve is assembled via an internal snap ring, which retains a coil spring pushing a symmetrical 1/2" nylon disc. So the disc can be turned over for a new surface, though trash in the seat is the most common problem.
Sorry to leave w/o saying good luck, though it was apparent I had nothing to add.
The hierarchy of men is usually a knowledge benefit, just shut down too many times. So realizing it would take a better comprehension of physics to know why the write up left behind is factual, leaving seemed more suitable.
Steel doesn't yield to subsonic aluminum, as so many Zero and Baka rocket (MXY-7 Ohka) pilots found out in vain, never sinking so much as a commercial vessel.
You're more than welcome to come by again, but I still will not let you touch the compressor. It violates the rule. "If it ain't broke, level it the hell alone." : )
*Construction seemed sturdier than other units I considered **MyBest.Tools** Noise level was reasonable. Good pressure and cfm capacity for a small reasonably light compressor.*
Yes
Of course I didn't watch this video 1st🤦🏽♂️.
I did the same thing. Bought a new pressure switch, And it's still doing the same thing🤦🏽♂️. Watched this video, cleaned the one way valve out. Now she's working fine.
And thank you for not putting a bunch of "fluff" in the video, and getting right to the point. it is Greatly appreciated.
Thanks for the information. I had a similar issue (would not cycle, stall on restart) with a Fortress 2 Gallon Ultra Quiet compressor. Purchased a pressure regulator (unnecessarily) and thanks to your post, I disassembled the check valve to find it not working properly due to aluminum filings preventing the valve from closing. Thank you for taking the time to make the video, very helpful!
So glad I found this video before buying parts. I think you just about saved me a bunch of pointless purchases! This is exactly what my compressor has been doing for a few days now.
I think you might have saved me $5000. I’m up in Toronto with a Jun-Air model 3 silent compressor that is having the EXACT same problem that you just described in your video. The service centre wanted to sell me a new compressor - think I’ll invest in a new check valve first. Thanks for the heads-up.
Cheers.
Just finished refurbing a compressor this week, (replaced the pressure switch, check valve and the safety switch since they all looked old. Also an oil change, as the last guy looked real lax on maintenance. Basically all that carried over was the tank, motor and the pump. Even new gauges). Get all new fittings to upgrade my airflow, feeling good, quick bump to make sure I wired it right. Cool, looking good, no smoke. I stand way back in the yard, cuz all that's left now is concern about the tank, even though it looks solid, no rust, no hollow spots from tapping.
It's smooth sailing right up til 70 psi. Speeeeeeeeesh! Brand new safety valve dumps. Umm, omen of further fiddling? 🤔
I have a relatively new Quincy that I was about to buy a switch for and then a bleed-off valve. I think you might have just saved me from 2 weeks of wrong part frustration! Many THANKS!!!
Welp. Doug... you are officially my number one person on the planet that I want to have a beer with today.
🍻✨✨, CHEERS MATE!!! 🤠🤗.🐞
Wow! You just saved my but!! Came across your vid, had the same problem with my compressor. Took off the check valve only to see that the spring inside was broken. Just happened to have a similar one lying around, changed it, put it all back together and voila!!! Compressor works as new because of your vid!! Thanks!!🤘🤘
Nice work!
Thanks for your video. My Hunter 55 will not restart due to residual pressure preloading the motor. (this compressor was given to me, obviously poorly maintained, the air receiver was full with water and sludge). I think I will check out your trouble shooting proceedure as my next step. Thanks again !
Well, I did remove the check valve and found the problem. The small disc inside was grooved by its seat. So I carefully re-surfaced it with 180 grit then 800 grit w+d finally burnishing its surface to a shine. Voila ! Job done. Now the compressor can live again. Thanks Mr SV Seeker.
Absolutely right. Thank you for the tip! I almost went and bought the more expensive switch. Glad I saw your video. I took my check valve out and found the spring that pushes the rubber valve was in 3 pieces. I took it apart, went to the local hardware store replaced the spring and that fixed the same problem. Thank you!
Great to hear!
The Old Pressure Release Valve...we all need one of those,some days more than others.Thanks for your video,sharing the knowledge.
You have just solved my problem I have been trying to fix for over a year. The rather large compressor I have was my late husband toy and when it started to act up after he passed away, I replaced the on/off control box thinking that was the problem! You are my hero! Thank you for your video. I am sure this is my problem and can't wait until I get home to fix the problem.
Hope it works for you.
Glad a ran across your video cause I had just ordered a new switch...went out and pulled the check valve and wadda-ya-know. So now a $15 check valve vs $25 switch. You just saved the family from me being pissed off for the better part of a weekend! 😂
Thanks for your video, actually after watching your video I fixed mine with simple step, need 17mm wrench and some gasoline clean up the release valve housing and special the white rubber cheap material seal it’s work again . Make sure after cleaning after build up air you can hear the air leaking out for a short period that’s mean it work. Grease stick around that seal plug can’t pull back the spring and can not release the pressure on the head which it stop the machine refilling . Using the cotton swabs to clean the valve housing don’t t let the gasoline into the tank .Thanks!
Thank you ,I viewed you video and you saved me from buying parts that imdid not need, a piece of plastic was stuck,in the valve just like yours, cleaned it out and is as good as new now.
Thank you
This video helped me troubleshoot my newly acquired 60 gallon air compressor. I bought it for $100 from someone who overfilled the crankcase, ran it with a terribly slipping belt, nasty oil and an old air filter. With that combo he told me it had a blown pump. Gave it a complete wash in degreaser. Took it apart, cleaned the valve with WD-40 and degreaser. New belt and oil and the compressor works and looks like brand new. In my case the pieces stuck on the check valve came from the disintegrating air filter mesh. Here is your like and a new subscriber!
Use summarized about 900 videos into one awesome simple wonderful stream The Helpful Pleasant very grateful for your video thank you
I appreciate you and this video sir, had the exact issue and since I’m an ac refr tech I didn’t know where to start. I came home and looked up videos online and luckily came across yours with the exact same problem. Beers to u good sir
Thanks, had this exact problem.
Cleaning out the check valve kept me from throwing money at a whole new pressure switch.
One extra symptom I had was when it tried to restart, it popped the circuit breaker. Knowing that check valve is there now, I'm guessing the inrush current is just too high when the cylinder isn't unloaded.
Glad it was an easy fix in the end.
After watching SV Seeker for a few years now if you can't take a bit of criticism and then dont watch it i have learned in life
that sometimes you just have to have a laugh at yourself and enjoy life as you said the enevadil is life will come to an end so enjoy it
and learn to laugh good video i look forward to them yes i am a bilge rat
Excellent, I have the same problem and will check the check valve today, thanks so much
Checked my valve first after watching this. Worked like a charm. Thanks!
Glad it helped
I've been stuffing with this thing for 3 hours found your video and 10 minuets it's fixed. Thanks.
Glad it helped
Thanks a lot on your explanation. I replaced 99% of the components on my compressor and still have not solved the air running until I seen your video, thanks again
Glad it helped
Excellent! You nailed my problem precisely. Did not know that connection was a check valve and now also understand the unloader aspect. Much appreciated - thank you!
Glad it helped
Thank you you may have just saved me a tone of time and money .
Thank you
Thank you
Thank You for your video it helped me fix my little sears air compressor. It was the check valve on this compressor also there was this small screw inside that had come loose. It’s fixed!!!
Thank You
Wonder how many times this happens!! Yep, same same here. The pressure regulator people must love it! I’ll check google before ordering on next mystery , thanks!!
Thank you so much good sir. I wondered why my new cut off switch was blowing air just like my old one!? 😩 so after taking various air fitting apart I found the pressure valve gave it a squirt with some silicone grease and boom back in action! I will eventually replace the valve but for now I have a working compressor again.
Great job!
Good video couldn't figure out why my compressor kept bleeding air and recycling....going to check that valve. Bet it is the problem....thanks
it was the problem....thanks again
Thanks so much for posting this CONCISE video. It’s was exactly what I needed to fix my compressor that was blowing fuses and dumping pressure overnight.
Glad it helped
just replaced my pump and rebuilt the cut off switch then cleaned the one way at inlet and blow off..removed bottom and side plugs to get a better look.. 1987 Cambel Hausfeld $230 for partial rebuild kit.. Harbor Freight $179 for brand new 5 hp pump...
Thank you so much. 😃I was about to replace my shut off switch until I watched this. Ran downstairs and removed the check valve. Sure enough. I'm sure the nice coat of rust around it doesn't help either. And I drain the water out after every use.
Glad it helped
Thank you! Saved me so much time on fixing my air compressor, you Sir are a perfect example of why CZcams is so great!
Glad to help
Hey I so appreciate this video. It's because of you I realized my problem wasn't my unloader valve but my check valve. Many thanks. This is what I love about CZcams . I hope it never changes so much we don't have this aspect. Bless you brother
Thanks a million saved me time, money, and head scratching.
Great to hear!
Glad I watched your video. I was just getting ready to tear into my pressure switch. I am sure you nailed my problem exactly,
Thanks for taking the time to make this video which helped me to fix the compressor in the workshop. Cheers
We had that problem not too long ago at work. Called the local parts store, they said bring the valve in for matching. And sure enough, a little piece of trash was in it. Cleaned it out, and works fine now.
Love the easy to reach drain hose idea.
Thanks for the video! I just bought a large compressor used and the unloader line was plugged off. Now I know why....the check valve must have gone bad and they rigged it. We have all ordered the wrong part, replaced good parts, then fixed the real problem! Its makes life interesting.
Thanks, your tip worked, took out the foot valve, cleaned it and put it back together, up and running ( and stopping) again
Excellent!
Well, I did watch this before I started buying parts. Thank you for that.
THIS VIDEO WAS PERFECT. EXACTLY what I needed to see. Thanks man. You just educated me. And I will be able to fix my issue!!!!!!
Same here was chasing my tail trying to figure this out!
Bought a used compressor from my Nephew needing cash to live on? He's now in re-hab, the machine was a mess, now it's working (thankx-4-info)
You just saved me lots of time and money…thank you
Great video I made the same mistake replacing the pressure switch on my compressor but your video pointed me in the right direction, cleaned the check valve and it was all good.Thanks
Glad it helped
Love it, "we do it right, cause we do it twice!" Lol!
Thank you for this, saved me a lot of trouble.
Glad it helped!
Sad I can only give one like to this video thank you so much
Thanks for this! I thought that the pressure switch was defective or something as whenever it was flipped to the off position or hit 150 psi it would let out air like mad, nonstop! Though, looks like that check valve is going to be a royal pain to get out of where it's installed... And that's not even getting to the part where i have to repair said valve, or worse, turn a new one (unlikely) - hoping it'll be an easy fix like the check valve on my smaller husky 5 gallon. Funny how just one broken spring can throw a wrench in the works!
This was a great help. My compressor is back up and running great. Thank you!
Just ran into this problem , was going to get a new pressure switch until I saw this . Thank you !
Glad I could help
This explains why my motor will only start when the tank is empty and why airs coming out of that switch I replaced! 😂 Thanks for setting me straight.
Glad it helped
You just me a shit load of frustration... Thought I had a dud pressure switch. Came across you post... SAVED!! Winner. 😊😊
Thanks for the information ,Check valve fault fortunately I was able to disassemble and clean mine
Nice work!
well you didn't save me from mis-diagnosing it. But after watching this I'm positive this is my problem. thanks!
First video of my search. Great explanation! Helped me fix my issue as well. Thank you, kind sir.
Great to hear
Thanks for your video. I wondered where the check valve was located. Thought it might be in the head.
Glad it helped. I looked the the head first. : )
I have a little 4 gallon pancake compressor. It stopped producing air. I checked the drain plug, all threaded connections, oil level, and relief valve. Everything seemed to be working fine. I unscrewed the air filter and tried to blow through it. Couldn't. Turned the compressor back on and it aired up the tank and cut-off just like it should. Air filter was clogged. I unclogged it using the same air I had just put in the tank, with a blow gun. Everything is back to working fine again. $0.00 spent.
I had exactly that problem with the compressor at work. The vendor sent a new switch wich did not fix the problem. Later the vendor insisted that we clean the valve again and there was some gunk left in the valve rubber. Since cleanig it works fine.
Thanks! you saved me money and time to repair my air compressor! thank you so much!
Thank you. I have exactly the same issue with my compressor and did not know about the check valve.👍
Hope it works out for you.
@@SVSeeker Believe it or not, there was a piece of wood in my check valve. About 1/4" x1/8" in size. I have no clue how that could happen. Thanks for posting the solution to my problem.
Wish I had seen this before I made the same mistake.😢 thanks for the video
I hope my problem is solved as easily. Thanks for posting this video.
Good luck
Could put a transmission after cooler and stop all water forming and going to the tank but need more tubing and a filter/separator. Mine works so so good
I wish I had seen this a few months ago, but hey, better late than never! thank you so much!
Welcome!
You da man.... and a boatie, yes!....
Yes "Love does matter" and now I love you 😊
Thanks boss 👍🇦🇺🇺🇲
holly crap fixed !!! didn't even know that value was there ... Thank You !!
You bet!
Excellent video. Better than all the rest
What a great, helpful video. Thanks sir.
Glad it was helpful!
Hello again, buddy thought I'd update you on the problem I've had with my compressor it turned out to be my fault I'd put the check valve in the wrong way round I felt like a right plonker but thanks for your replys in the last comments
I've done that with check valves myself. : ) Glad you found it.
Thanks for the upload. Ive managed to fix my issue thanks to your video.
Glad it helped
Damn I wish I'd seen this sooner!
Edit to add: damaged the unloader valve thinking that was the problem. Ordered the wrong size check valve. Ended up replacing both the full switch assembly and the check valve.
The good news is, after taking the whole thing apart and putting it back together, I can disassemble the whole compressor and put it back together in a few minutes now.
Edit because auto correct hates me.
Thank you so much. As you said, I did not want to mis diagnose.
Hope it helped.
Thank you it worked like a charmer
Great!
Fixed my problem on my HF compressor. Thought I was in for a new pump.
Very helpful and good video. Thanks!
Glad you enjoyed it!
Thanks for sharing! Something to consider because I’m having this issue now. Thanks again!
Glad it was helpful!
Great video, so real world! Thanks!
I have been fighting my air compressor for a week. Just put a new pressure switch on and was doing the same thing. OK, this weekend I will pull the check valve. My old pump ate itself and I bet small pieces of metal got into the valve. I will update this if this works and let know know (Like you want to know, right! LOL, but others might want the confirmation!!!)
Good luck!
@@SVSeeker Well for your viewers! If you have problems with the shut off pressure switch blowing air when the compressor turns off, check this check-valve FIRST! As SV showed, a little dirt, metal or plastic can get down in that valve and it will leak air. I just took mine out (What a pain BTW, mine is on top of the tank under the steel mounts for the pump and motor. I had to cut a custom 7/8s socket to fit the valve as it had a 3/8th small pipe connector on one side of the valve that goes to the pressure switch) and blew it out and washed it with solvent. Popped it back in and my compressor works fine now. I could have saved a lot of work and $33 for a new pressure switch if I would have done this first!
@@xhefriguitars7946 Bravo for not throwing in the towel.
AWESOME...Exactly what mine was doing. Unfortunately I too already replaced the pressure switch assembly ($28)
...also just checked my check valve, and ended up being a piece of metal shaving lodged in it. Probably floating around the tank since new. Removed the chip, cleaned and lubed it, reinstalled, and all is good!!!
thanks for the video. Now I know how to fix mine. You have saved me time and money.
Glad I could help
thanks Doug....
Nice , clear straight forward vid... thanks!
Thank You for schowing it to us!
You bet!