Vintage Air Compressor Stalls Under Load. Cheap Fix.
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- เผยแพร่เมื่อ 22 พ.ย. 2023
- a friend asked me to look at his sons big air compressor that is used to blow out sprinkler systems in the fall to avoid freezing, at 1st it would not run at all and he went through the tune up, now when building pressure it will stall out. lets see if we can figure what is wrong with it and fix it.
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My favorite kind of Mustie video, where he gets something he’s never seen before, and we can listen to his thought process as he investigates and fixes it.
Yep I've learned alot from him cause of it
I completely agree. It’s what hooked me in his videos in the mid 2000s.
And the bonus fun at the end
I can't believe we were lucky enough to get a Mustievision video today. Incredible how quickly he figured out what was wrong.
He brings the Mustie-magic.
Agreed! Perfect way to have a Thanksgiving morn cup of Joe!
Another thing to be thankful for. Thanks Mustie!
I guess sometimes it’s the easiest fix.
Happy Thanksgiving
It’s his Thxgiving gift to us.
New Hampshire's motto should be " live free or die trying" . That golf cart was badass!
Agreed but I've never seen a vehicle more in need of a roll cage. It's a death trap, I'll take two!
Yes a Mustie1 Thanksgiving treat! Happy Thanksgiving everyone!
That laugh when you're riding the golf cart shows that we never "grow up". I was smiling ear to ear at the end of this video. Happy Thanksgiving!
Mustie, you would've loved a Sullair compressor I worked on for a friend years ago.
It was a 70's model screw compressor powered by a 1600 VW industrial spec engine, I was thinking of you while working on it.
It was all original, ex-military machine here in Australia, but was US made, designed and built by Sullair.
The guys at my local Sullair dealers had never even seen one before, and being so old they couldn't provide any info or spare parts etc.
The machine used the VW engine from the factory.
BTW, The valve you pulled apart is the pressure regulator/throttle control.
It actuates the big throttle control diaphragm unit and unloader valve.
The throttle should start out at the full throttle position when the engine is off.
The air hose outlets should be closed before starting the engine.
Once the engine is started, the engine should rev up to make air, then as soon as it comes up to pressure, that regulator valve you disassembled should lift the crusty diaphragm inside and slow the engine down to idle by allowing air to enter the big diaphram unit, and that moves the big lever which opens and closes the air intake for the compressor unit and also controls the engine throttle via a cable.
At the same time as dropping the idle, the idle unloader valve lower down should open to vent enough air to allow the engine to run unloaded.
The other valve tee'd in next to the one you dismantled is the shutdown blowdown valve, which you hear hiss for a while when the machine is switched off, it allows tank pressure to drain off gradually at shut down.
When the valves to the air hoses are opened, the resulting pressure drop should allow the pressure regulator to close, and unloader valve and engine throttle to open, increasing/decreasing air output and engine speed dependant on air demand/valve positions at the hose outlets👍
I rented one back in the 70's, two cylinders made the power, the other two were modified to compress the air. Half a VW engine did'nt make a lot of power but it did the job.
@@billstuart8481 My late friend Wayne used one of those for his sandblasting setup, adjacent to his home built powder coat booth. It was loud as hell, but it ran great. I tuned it a few times for him over the years.
@@billstuart8481 Oh, that's interesting.
I have an emergency tyre pump hose that can use the engine as a compressor, the hose can be screw into a spark plug hole to get you out of flat tyre trouble in an emergency.
However, the machine I mentioned used the entire VW engine, running on all 4 cylinders, 4 spark plugs, distributor and 4 plug leads.
It directly drove a an oil flooded screw compressor airend, similar to the one in the video but a much smaller unit.
The airend was mounted where the gearbox would normally attach if the engine was used in a car, then it pumped air/oil mix into an oil separator tank, same idea as shown in the video.👍
@@billstuart8481 The ones like that which are common in Australia were made by Holman which became Compair.
I love the silly cruising part with Friends😂
The part you stripped is a pressure regulator, and the screw/locknut is to adjust the pressure being fed to the actuator. If that hole in the bell housing (top) was blocked, the regulator wouldn't work. By leaving the screw extended you're allowing maximum pressure but the pressure may fluctuate depending on the air pump type. Some pumps generate a pulse air flow and the regulator evens the pulse.
I caught myself yelling relief valve over and over haha but yeah if air is just escaping through that then you won't build pressure to operate the throttle.
I was thinking about the unloader valve.
Are you sure about the screw? Every regulator I've ever used you have to turn the screw in to apply higher pressure. With the screw out there should be no flow. That's why I'm thinking the regulator is just not working at all in this case, it was clogged before and cleaning it out is now letting max pressure through.
@MartysRandomStuff in = more tension on the spring which = more pressure required until relief.
@@MrWick86 So we are not seeing some other supply tube going to the throttle control and that regulator is an output (relief valve)? I guess that might explain the floating part inside that I've never seen on any regulators I've worked on.
A Mustie video to watch while my turkey bakes in the oven. Faaaantastic. Happy Thanksgiving, everyone.
The difference between a brilliant mechanic and an average one is the ability to troubleshoot and diagnose. Mustie is up there with the best.
These are GREAT compressors. They will give air all day for jackhammers and such. What a find....
Damn, the fact a sullair is still working is a testament to how great that company is.
I swear there is nothing this man cannot figure out or fix...I have learned so much from watching his video's love this channel 😊
Extremely smart fella 😊
Mustie1 versus the Machines!
Another win to Mustie1, of course.
OMG ! I thought I had slept through 3 days, and woke up on Sunday morning lol, not use to Mustie1 throwing out a video midweek lol, such a simple fix in the end, but still had to investigate what the fault was and why. Great video once again, I hope I'm still going to get the usual Sunday lunchtime Video, as Sunday would not be Sunday without Mustie1's Sunday school lol
Its a scroll compressor. That tank is an oil and air separator.. It has more than a couple of things wrong with it
Rotary, Too old for a Scroll.
Helical rotary screws.
Oil makes the screws seal .
Often the oil air separation filters are clogged and bad oil won't let them build pressure.
Most modern tow behinds use this design since 1970s.
The best thing for me on this channel is the variety of machines, components, gadgets that Musti gets through his fingers to fiddle with. I saw these big compressors multiple times on constriction sites, but never knew how they work, or what's inside . Also, the many different styles of carburetors, pumps, motors to be seen on his Videos is very interesting. No other channel I know has that...
Plus the entertaining deductive way of taking us along to figure stuff out is a big Buena .
That’s a little Ford tractor motor. I have the same set up on my 1953 Jubilee. Finding the problem not being familiar with a Sulair air compressor was impressive. Fixing the exhaust leak would bring this unit back all together.
Birds of a feather flock together. Mustie's friends are as crazy as he is!
I love when Darren comes for a visit , we have lots of fun , great friend for many years
Yay!! A midweek Mustie video ❤🎉
Well, there you have it, people have to learn how to use O-rings, and what their purpose is in a machine like this oldie. I'm glad that I got taught about how to use O-rings by my granddad. He was a good educated electro-mechanic. worked on old elevators and he build amps, and biked out and fixed people's radios in their homes after the war. and later he did their TVs too, when people started getting TVs in the homes.
I was about, 7-8 years old when he let me tear a radio apart, and he was sitting fixing other stuff, but told me everytime what those things was for and how it made the radio work. Still miss him a whole lot. He died last year. Tough last 5-6 days, he couldn't eat, everything my Grandma fed him came out the nose. and he suddenly weakened. So, I sat and wet his mouth and lips for the last 4-5 days with those cotton q-tips you know? they are made for that exact purpose. I cared for him for 4 years after he suffered a stroke in 2011. And in 15' he finally got some homecare from the rotten system here in denmark. Yeah, Something is rotten in the state of denmark. where have I read that before?
Nice catch on the diaphragm. The unit needs some more love. Maybe the owner can return it for more fun and education when he has finished blowing out the irrigation lines.
It cracks me up how his hands follow along the machinery during his thought process, then stop on a pressure valve. Oh! It’s likely this. Just like a divining rod. Take apart, clean it up, Bob’s your aunt! Love this stuff.
A token to musti’s skill the first thing he try’s fixed the problem a true master of his craft well done sir
The neighbors must love that guy with the snowmobile golf cart!
Better than Macys Thanksgiving Day Parade. Thanks Mustie.
Hi Musti,,,I learned a lot from the locals here in pH,and I had a chainsaw with issues ,it was that thin rubber thing In the carb,we could not get a new asap and he said ahh no problem,and he told me to go buy soap for washing clothes,he boild some water added the soap ,after a min he threw in the rubber after a min he took it out rinse it in water and to my big surprise it was soft like new,maybe it works on hard rubber in your valve as well 😊😊😊😊😊😊😊
Happy Thanksgiving, Mustie, to you and your family. Thank you for all the excellent videos during the year. Have a great holiday!
I took off of work yesterday to have a nice 5 day stretch of vacation. It did feel like a Saturday but I knew it wasn't. But now Mustie has made me rethink my days. Happy Thanksgiving Mustie and the Mustieheads
That was a fast fix Good diagnosis even left some time for a play on a toy 🙂
that golf cart spin was awesome, I wanna be these guys when I grow old (not up)...
We serviced a larger Sullair Compressor that was used for sandblasting. It had a 6 cylinder Detroit Diesel engine. The governor was controlled by air pressure. The engine ran wide open until it built up some air pressure. I never liked changing oil and having it start running wide open with no oil pressure for a few seconds. I added an air fitting to connect shop air to control the governor on startup when we changed oil.
Nothing like a waking up on Thanksgiving day and there's a special Mustie1 episode posted in my feed.
Wife thinks I'm loony toones when I begin laughing like him.
Happy Thanksgiving to all my fellow MustieNuts.
So, the higher the air pressure the harder it pushes against the diaphragm in the bell, which lifts the needle. Lletting more air into the bellows moving the control arm. If air was leaking by that gasket, the needle won’t lift and the bellows won’t move. And by backing out the set screw he made it much more sensitive.
what a shame we live so far away from this guy.If we lived closer we would never have a worry about anything mechanical. He's a great teacher
I appreciate the time and effort you put into camera placement. You really do make it seem like we are there.
Lighting. Toooo
Your mechanical intuition is transcendental! Thanks for another superb video!
That Happy Laugh at the end Priceless
That regulator is a Cornelius co2 regulator. They make rebuild kits for those.
its made by Cash Acme Decatur IL.
That thing is a pressure regulator. As the pressure drops, the pintle drops and cuts off air to the big vacuum throttle control. As pressure increases, the diaphragm moves allowing more air to the throttle motor. That adjustment sets the preload on the spring and thus affects how much pressure is needed to increase engine throttle. Hopefully it has some kind working regulator or emergency pop off releif valve because it would be hella dangerous to run without it.
Thanks for the video! Happy Thanksgiving!
Wishing you and your family a very happy Thanksgiving. Thanks, Darren, for the Turkey Day bonus content.
Only 15mins in. I have a 48 greyhound bus, wouldn't make air pressure due to the regulator diaphragm rotted out. Used some rubber gasket material from the parts store to make a new one, works like new again. Always watch your videos to learn a little more!
Looks like 1920s or 30s tech with the updraft carburetor. Back in the 1980s I worked for a contractor who had a Jaeger air compressor from the early 50s that we used for jack hammers, pneumatic drills, and a portable sand blaster. At one point he picked up a newer Ingersoll-Rand to replace it but he sold the I-R and kept the old Jaeger.
I am still using a old jaeger
It's nice once in a while to get a simple fix.
Surprised it’s not mustie cooking a turkey with some kinda crazy vw ish cobble contraption that needed carb rebuild first! Happy turkey day!
That engine needs some love.
Glad this one was not a turkey! Funny how well the Mustie giggle blends with a snowmobile engine.
It always amazes me how you can evaluate a problem and almost immediately isolate the defective part. Thanks for the Thanksgiving video and Happy Thanksgiving to you and yours!
when you know the basics of how something works, its easy to fix. Fixing a car for example is easy once you know how the basics work.
Hey, I saw the black mini "VW" muffler in the search pile. Back to the Future! Nothing better than a mid-week Thanksgiving Mustie Vid. Happy TG to all especially to Mustie.
Short and sweet! I like digging into projects with no knowledge of it aside, from common sense, and finishing victorious.
Got home from work, found a new Mustie1 video. Wondered why I was at work on a Sunday! Lol. Only 3 more sleep until....... The next mustie release.
Happy Thanksgiving Mustie. I wasn't expecting a video this morning, what a great surprise. Great content and troubleshooting.
When the Titanic gets raised, Mustie will be hired to get it running again
I was excited about football today and then this video popped up!! Super grateful! Happy thanksgiving wrench turners!
you're awesome Mustie! Great job, i'm glad you made time for this one to show us your amazing diag skills!
Im getting a Secondhand Lion vibe with you two riding that crazy built golf cart around the barn.
Thanks for Giving us a mid- week treat Darren
Happy Thanksgiving everyone. It's a great treat to get this Mustie1 video!. Once again he takes oñ the pressure and solves the problem. You are the best. Now put your feet up and have a great family holiday, Mustie. 😎
Thank you Mustie. You made a special day even better, Happy Thanksgiving to everyone.
Rare treat these days when Darren drops a vid that isn't an hour plus. For those of us who are long time fans, we remember when 25-30 minute episodes were the norm. Not a question of content, I just don't have that much time in my day.
But I could watch a 2 hour mustie video every other day.
Been watching Mustie for a long time. He should teach a shop class where each student has to bring in something that doesn’t work and he can teach the class how to fix it or at least teach the students what failed on it to make it not work. School has to get back to this kind of stuff. Shop classes benefit everyone
Looks to be a 172 cu in Ford tractor motor. They used them on late 50s 800 series and early to mid 60s 4000 series. Parts for these are readily available and cheap.
Yep
Happy Thanksgiving, Mustonians! Darren, thank you for all you do to make this such an enjoyable channel. Happy Thanksgiving to you and your family.
Oh boy ! A Mustie1 turkey day bonus video !! Happy Thanksgiving🦃 Darren(&family) AND all us Mustie1 fans !! Gobble gobble !
Around here, I'm considered a fix-it-man, but you are absolutely on steroids! Great diagnosis and fix. I can hardly believe it, actually!!!
Great Job Mustie1 on figuring-out what was wrong and got it fixed.
Sir I do believe that this is the shortest video you have put out thank you for sharing this six stars
Damn, you've got tons of intuition and experience...
This is why I’m here!! We solved this and figured things out together. 🙌🏽
Wow that’s an old engine with an updraft, carb , could be a ford or chev as you say, but man it’s old. Great job
The bell-shaped part is the regulator. The pressure gauge is the one on the far top left. Adjust the regulator back into where it was (the screw and nut on top of bell), and it should build air to around, maybe 185psi. The regulator has not changed over the years and you can get one. I work on Vac trucks that use the similar on demand air compressors. But you were spot on for diagnosis!
What? Thursday’s the new Sunday? WooHoo!
A diviner's ability in diagnosing a mechanical problem.
I just rebuilt fixed a Smith 150 cfm rotary screw compressor.
It has a 4 cylinder Ford Diesel ( Dover) 1980 .
I was told Smith pioneered portable tow behind units first made from Ford model A where 2 cylinders were converted to air and two were gas engine.
There are some later which used a Ford 302 V8 half compressor.
But Smith of( Kentucky coal mines ) pioneered helical screw compressors .
Quiet no vibration etc.
Sadly Smith corp is gone
But there is a group online that restores old units .
Schramm also had similar designs.
Nice channel 👍
Ps you are supposed to open air outlets to start cold until unit warms up.
There is an unloader valve to turn compressor off to initially start unit until warmed up.
I've seen some others based off the same principle. Diesel Creek has one that I think uses a Wisconsin air cooled V4 with two cylinders converted to compression duties only.
Happy thanksgiving Mustie, and all the Mustie fans.
@@ELOfanatic yes. Many used this idea until rotary screw compressor came out . Some had 390 V8 Ford half engine half compressor on 4 cylinders .
Rotary screw compressor have no valves and piston plus rings to wear out. Oil flooded between helixes close together is the sealing surface .
Lasts far longer .
Not so sure you got it on the air compressor Mustie. The thing you called an air tank isn't exactly what you might think it is. Its actually a separator tank and separator filter(s). The compressed air is Layden with oil, due to the air end being a flooded screw as they are called. So oil is being injected into the air end as its running. The air goes to the separator where the oil is dropped out to the bottom of the tank. The filtered air comes out usually at the top of the tank. There are sometimes two readings for air pressure, one being the wet side of the filter and one being the discharge or dry side of the filter. There should be around 3 psid from wet to dry side pressure -d = being differential pressure. You should have had a lot more air coming from that open hose when it revved up. I suspect a plugged separator filter. among other things. Most often with the old Sullair's and other makes is the orifice's get plugged on the signal side due to grungy oily air.
Another thing to be thankful for.
Happy Thanksgiving to you and yours Darren! This is my fav channel. Thanks for the “special edition !”
I’m thankful for Mustie1. He plays a big part in so many peoples Sundays.
What a nice surprise. Thanks Mustie1 for the Thanksgiving surprise to watch while I cook this morning.
Short and sweet midweek video is great. They should just replace that whole diaphragm housing with a modern regulator.
Was not expecting this...🎉
I'm as thankful as thankful can be.
Sounds like an old steam train when it stops, you fixed it well happy to watch
The end of the video had me dying imagine being his neighbor, old m is playing with his toys again! Come fly it out of the garage at full throttle lol lol lol
LOL at the acorn rain from that muffler. Based on what I have learned watching your videos I figured it was a 'pressure governor' issue as the engine did not speed up as you opened the air valve. Gotta love cheap and easy fixes. You have some cool friends with some wild toys. Happy Thanksgiving to you and yours
Brilliant, just love the way you methodically work through it 👍
My favorite youtube channel. Mustie can repair anything, and goes on to repair things that could mess up, and even cleans what he has repaired. I wish he was my mechanic!
Ok, between the golf cart and Mustie1, I'm convinced... those long new england winter effect the mind! Lol, go Yankee mad lads and your mechanical heresy!
It would be fun to see your buddy there drifting that golfcart around the karting track!
Happy Thanksgiving Mustie. Get your stuffing on and enjoy the day off.
Happy Thanksgiving Mustie! Im thankful for your hard work to give me a diversion every Sunday. Your stick-to-it-iveness has always inspired me.
Thanks for the Thanksgiving bonus video. Have a Happy Thanksgiving!!
Thanks for the turkey day upload! Got me smiling here
Looks like that device is a pilot air regulator. Sends a reduced pressure air to the larger diaphragm to control throttle and keeps it steady vs the main compressed air that will vary. The diaphragm definitely need some love or replacement.
That looks like a early 60s air compressor, amazing to see that. And that golf Kart 🤣 fastest one i ever seem. Awesome video Mustie1 👍
Have a happy, safe and blessed Thanksgiving young man
Outstanding fix Darren .
Great video Mustie. Love the mid week videos. It's always a nice surprise to log into youtube at the end of a long workday and find out you've done a video. Thanks for consistently putting up amazing and clear content. Watching your channel has inspired me to get my hands dirty and start working on my own stuff. I realized that auto mechanics aren't nearly as scary as I thought they were. Which in turn has got my son interested. We watch your channel together and I will always be grateful for that. Keep up the amazing work.
Awesome as always.Thanks for sharing and taking us along.Happy Thanksgiving
Awesome "bonus video" on Thanksgiving Day no less. We appreciate it, Happy Thanksgiving to you and yours, Mustie1! :)