I think everyone who watches this channel spent their childhood taking things apart, I know I did ! The modern world is too disposable, no one seems to want to fix anything just dump 'em and buy a new one. We are the old school who fix things and you cannot get much greener than that!
Yep, pulled apart many broken things as a kid, when I put them back together working the neighbours brought more stuff over to see if it was fixable. These days things are bonded sealed, and expode on opening.
Mustie I'm 15 and you have inspired me to start fixing small engines. So far I have fixed 3 lawnmowers and 1 strimmer. You have taught me how to test spark and clean carburetors out and unseize engines. Thanks again mustie because I really enjoy fixing things instead of playing computer games. And I'm making money from selling them
Thank you for your time. I have currently got 4 students watching your videos here in Australia, this is one of them now. We are learning in class about a sustainable future. without this level of willingness to have a go, i believe our future generations will go backwards. I applaud you for your effort to fix things that would be otherwise be thrown away. And I hope you can continue your work. Thanks again.
Nice to hear someone showing kids how about digging into stuff to troubleshoot and fix things instead of just throwing them in the bin and buying another that will last even less time. If Mustie's style is to your liking you might want to show your student some videos from Dangar Marine - a fellow Aussie that works mostly on boats. Lots of the same kind of stuff - getting things working again but also some maintenance and upkeep videos too. His current project is getting an old steel fishing-trawler back into sea worthiness. I eagerly anticipate hie vids as much as Mustie's!
It is amazing how quick and easily some things can be repaired. The main problem with a lot of things is getting the spare parts, that in part is because most things these days are built to a budget, not a standard plus the fact that the manufacturer rather sells you a new one then a spare part.
"Oh, no you're not!" I spit coffee laughing. I always wondered what was inside an air compressor. Now I understand how they work. Another unanswered question in my mind is answered. Thank you for posting. I learn so much watching your videos. I really appreciate your hard work. I think it succomed to "VW cylinder 3 syndrome" . The failed side got too hot
The story is all in Mustie's mitts. No pretty nitrile gloves here. I enjoy his meat and potatoes approach in making repairs, reminds me of so many people I know or once knew. I see rusted frozen/ seized parts, worn out wrenches, rounded out bolt heads, nuts and jagged metal edges, the hands say a lot. This is one of my favorite, most relaxing "Man stuff" channels. keep up the good work!
I got an air compressor that would turn back an forth about 3/4 of a turn. When I took the head off it was about 1/4 full of rust and water. I drained out the cylinder and removed the piston. Cleaned and honed the cylinder walls. Cleaned up the piston and reinstalled it. Changed the oil (had water in it also). Tried it and it ran flawlessly. I still use it. Got it for free from the side of the road. No parts where needed.
Way to go Charles ! Is'nt it a great feeling to fix something other people just throw away as garbage ? I fix regularely bikes and 3 wheelers wasteful people throw away and bring them to poor families or thrift stores for kids to enjoy. Oh the smiles I get !
True but usually we at least put the stuff back together and it still works afterwards now, as opposed to being a kid and taking the VCR apart and well we'll just leave it at that HAHA!!!
60 later this year. My Grandfather and Uncle put tools in my hands when I was about 9 and pointed me at a pile of broken stuff. I still have a Russian bicycle wrench my Grandfather brought back from WW1.
Great video. I used to repair air compressors many years ago and if I had to guess, I thought that I saw some carbon at the top of the bad cylinder and I've seen several air compressors that were neglected and the owners put off maintenance so long it allowed carbon to build up to the point that the piston starts hitting the valve plate just ever so slightly until it just gets worse and worse until, well you know what happens then. The wrist pin is the first part to go from repeated contact until it finally gives up the ghost. For those that wonder how you can get carbon in an air compressor just consider that you have all the components required for creating the carbon; oil, pressure and high heat . . . . oh and don't forget, neglect. Air compressors need maintenance too, and I have seen some real badly neglected air compressors. Your video's educate the newbies among us.
You're not alone. I'm definitely glad i was wearing toe protection when i caught a ~50 kg server with my foot, though. It mostly survived a fall from shoulder height, bouncing off my shoe.
A little lesson on water separators. In order for water to be effectively separated the water has to be in liquid form, when the air leaves the compressor the water is vapor, as the air flows thru the lines the air cools and the water returns to a liquid, the further away from the compressor the more effective the water separator works. It's recommended to be installed down line at least 20ft from the compressor.
Used to get into trouble from my dad as well problem was i had access to his tools and love taking things apart then fixing them even though they weren't broke . Keep up the good work John
Just wanted to say a big thanks mustie1, found my first busted generator on the side of the road, took the spark out cleaned the carb and bam works like a bought one. Learned more from watching some bloke in his shed tinker than i did in 3 years of auto tech at school.
For anyone who wrenches as a hobby these videos are so much fun. It is how I think anyone who like to paint must have felt watched Bob Ross. It is a happy and calm place of fixing things
Random thought. It looks like the piston furthest away from the fan overheated and began to seize, therefore causing the piston pivot to fail. It makes you wince just thinking about it.
Right on pauline. It probably was low on oil too. Definately over heated. Ruined. Could be rebuilt, if you can get parts. See you over at cold war! revved up yooper
Good example of what happens when you don't check the oil level! Love your vids Mustie..Not only are they informative and entertaining, I just love how you include your fans in how you treat us just like we're there watching/helping/and exchanging views lol. Keep 'em coming Darren!!
Your commentary in it's detail is very valuable. Keeping things going is not only smart it's economical. When someone else gives up on it, you take and revive it. I've seen your videos and I'm amazed at how you can take things and make them run so good. Kind of reminds me when I was working on aircraft and big rig trailers. You fix them until you can't fix them no more. The one thing I like about your video is, you don't speed the video up. When something takes to long, you stop, finish, then start videoing but we get the idea. At least I do. You just save us from going through a drawn out situation and go right to the instruction part. I say keep up the good work, too. An amazing fix it man you are there.
That was fun Mustie1👍 I enjoyed it a lot and I would totally watch more of this kind of content. Thanks for letting me hang out with you in the garage again and thank you for all the hard work you do for us here in TH-cam land.
Those drain valves are a real PITA. I replaced my valve with some fitting and a 1/4 turn valve with handle from Lowes. Best thing I ever did on my compressor. It makes it convenient to drain and then you do it frequently.
Family Handyman had a good tip. Replace drain valve with a semi air bleeder valve. Pull on cable to release pressure & water drains out. Release cable to reset & Bobs your Uncle! 😊👍
Furthest cylinder from the cooling fan always suffers the most, the carbon build up is from when the oil got low it started to over heat and boil it, Another great video Mustie1. Thank you
@@TuttleScott That's it. I'm often doing some electronics repairs, every time something is dropped or lunched across the room I instinctively go silent and wait for the landing. Usually there's no other way to find microscopic parts on the floor.
@@TuttleScott It is a natural reflex. Strange thing is that you can pinpoint where the sound came from, but good luck actually finding the part. About a 60:40 chance that you won't find it.
So glad I found your channel. Hard to stop, hard to look away. You make everything very interesting to watch and to listen to. Mr. Information in a great way. Thanks so much
Pretty similar. You can get a conversion head to convert a Model A engine over to an air compressor that runs off 2 cyls and the engine itself runs off the other 2.
I absolutely love watching you take it apart and finding out what it was that failed and how you could make it stronger obviously there's no money into rebuilding that pump but I love taking things apart I take part of my dad's little slot cars which was no big deal back + 86 cuz they're only a dollar now they go for up to $100 a piece I got a pretty badly damaged the back which doesn't allow me to do this kind of work so watching these videos are very satisfying to watch keep up the good work
he didn't let it pump up any pressure though, it would have been mega hammering like end of the world and parts are going to fly out. as other post, maybe leaning and less oil there, or all heat related, since the less broken end had more metal attached and cooling airflow
I'm about to tear into my shop's 17 year old 60 gallon compressor. Last month one of the flexible lines burst overnight and it just ran to death. So far, this is the most helpful video I've found. I'm buying a new pump. Thank you very much.
That was interesting! I just brought home an old Sears 18 gal compressor somebody brought to the curb, cleaned it and fixing it up, works great. I got in trouble taking things apart when I was a kid too, 8,9,10 years old, "We just bought you that toy a few days ago, why'd you take it apart?!" Weird thing is that I was going to bid on one like it tomorrow but it's gas powered.
I was watching at the pulley alignment and kept moving to the right but couldn’t see any more to the right. I watch welding videos and have tendency to flinch my eyes when they strike up
it may have been sitting at an angle with the rear having less oil, but it was probably all temperature related, since the better end had the pulley/fan crank snout with more heat transfer and air cooling.
Glad I found this channel. Really enjoy the variety and your thought process and methods. I'm a former gunsmith and now auto technician, so working on a variety of different things and seeing other people's methods is enjoyable. Great show to watch and learn.
As far as the piston "hitting the top of the head" goes... The "pressurized" air on top probably cushioned the piston from hitting the head. Great "airtopsy" LOL
I think by watching this vid that the wear was on the bottom of the rod thus indicating it was actually going less to the top of the piston and more towards the bottom ( well just not going all the way to the top of the stroke, this also was indicated by the build up on the top of the cylinder walls on the second piston) Just my opinion.
If the two pistons are the same size, the second stage piston has a higher operating pressure. One I took apart had two different piston sizes, and the air from the first stage piston went into the second stage chamber and was compressed higher and put into the tank. I'm not sure your original compressor was actually a two stage compressor, but instead a two cylinder compressor for higher volumes, and 120psi pressures.
good autopsy. It's kind of incredible how things break. I've worked on quite a few different styles of air compressors (mostly in the navy) up to high pressure units that put out 4500 PSI. Thanks for sharing some great content.
I didn't look at the valving very closely, but, often the cylinders operate in series -- the output of one goes to the input of the other, which further compresses the air while sending it to the storage tank. The high-pressure cylinder in under much more physical stress as well as operating at a higher temperature, and that is why one cylinder is in much worse shape than the other. This may be a single-stage compressor, though, because the secondary piston in a dual-stage is ordinarily quite a bit smaller than the primary in order to equalize the load.
Unit overheated and not maintained, run to death. See it everyday. Most customers never think about their compressors until they don’t have air. Love your videos.
Enjoy your channel - tried to rebuild a compressor a few yrs back and learnt that Asbestos gaskets were still present on the reed valve setup. Something to check with old equipment. Was using compressor for bead blasting so it ran more than the 50% cycle time rule of thumb which is why it cooked itself. The hotter it runs the more moisture you trap under compression. On my replacement compressor I ditched the brass drain valve because if it's not easy to access it rarely gets checked. Put an elbow with flexible line to a ball valve at a more accessible spot so I don't forget. cheers
The reason the bearings wore at an angle is that the heaviest load on the compression stroke. During this time, the rod is at an angle to the bore so the maximum load is at somewhat of an angle to the center line of the rod, piston and crankshaft.
I am new to the world of mechanics and to be honest, I really enjoy learning the things I have and what I still am and Mustie1 gives me the inspiration to keep trying and going and continue learning!
Carbon is always an issue with compressors. It looks like a good candidate for a rebuild, but I wouldn't bother with it. Run of the mill single stage. Tank seems to be in really good shape. Didn't see any rust in the water when you drained it.
Great video, mechanical autopsies are always interesting. This compressor, is a two stage. The larger piston is the low pressure side, the smaller one, the high pressure one. the higher pressure piston gets considerably hotter then the low pressure side, and oil is much more critical. Chances are, the oil sealing ring let go, and what you are seeing on to of the piston is burnt oil, then it just expended and began beating itself to death. These things are really easy to rebuild, if your just changing rings or gaskets, but you can get parts pretty cheap.
When I was 12(58now) my grandfather taught me the Jesus clip term. He said when it goes flying, you say well Jesus Christ. He had something funny to say about everything. I’m waiting on you like one hog does another. It won’t be long now said the monkey that got its tail caught in the lawnmower. I still miss him.
@@thejeepdoctor my father taught me how to swear in Dutch when he was working in his shed cos you could hear whenever he hit his finger or thumb by his exclamations in dutch
A zip tie put loosely through the gudgeon pin (wrist pin) will catch any circlips that try to go aviating. But if one does go - shut up and listen to where it landed. You might just find it.
Mustie... I agree with you. The piston that failed gets less cooling air from the fan. It probably caused the carbon build up due to higher heat than the other piston.... Also, that fan guard is far to restrictive. The way it's been deigned it blocks off at least 50% of the air flow.. If you cut every second rib out on the inside cover where the fan blows onto the compressor you'd get far better cooling and the compressor will last a whole lot longer.. In the past I've replaced that section with wire mesh and it made a huge difference to the air flow.
Thank you for taking that apart! It would have left an empty feeling if you hadn’t torn it down. I guess we all have the same tendency to figure how it works and why it failed! I think that is what has made America great! That tinkerer’s curiosity!
Boy! Every time i watch one of your videos i learn tons fo stuff. Thank you for taking that extra time to set the camera in the right place and voice your thougts as you go along. Very instructive.
Why not all you'd need is a correct timing chain and sprocket set and an overhead valve cylinder head and new pistons, rods wrist pins and a new crank and all new bearings
Watched the repair video when it came out and was waiting for this one. I've never had a compressor apart either, but, from the sound it was making, I was kinda expecting a rod end problem. What I wasn't expecting was the problem being the pin end. It's now obvious to me that when the wrist pin came out of the bore, it got cocked in the rod, which caused the uneven wear in the rod bore. Now, I'm wondering how, since both "cir-clips" were still in the piston bore, the wrist pin could move enough to come out. Things that make me say hmmmm. Either way, all the movement of the wrist pin and wear on the rods pin bore obviously caused the damage to the rod bearing and crankshaft. They litteraly got hammered into oblivion. Great videos! Love the channel!
You know Mustie1 is not serious about fixing this when he does not use the "Favorite Hammer" to disassemble the machine! Premature Comment Alert! 9:03 The Hammer appears! Thank you for another superb video!
Yup.. I say it was a lack of cooling that made that damage.. Hotter it got, boiled off the oil.. thus the carbon build up, the it started to fail as the "front" (closest to the fan) pressed on... Thanks for tearing that down. Watched the change out video and wondered what made it fail ... You never fail....
Ha! When I was young, I got in trouble for taking everything apart. I can remember my Grandma yelling at me “You don’t come into someones house and take things apart.”
Thank you for that. I now know far more about comressor heads than ever before, and I encountered my first some 45 years ago. The other thing in air supply systems is the pressure regulator. It would be good some time to show how they work; all that flapper & nozzle stuff. A guy named Harry at a Honeywell training centre taught me about regulators those same 45 years ago but I'm not so sure I retained everything he said. Time for a recap.
@@godmodeforever My thoughts too. I think one side ran low of oil for some time. Unusual to see a gudgeon pin wear like that but in this situation being a pump and not an engine it was able to survive longer and thus show the wear over an extended period. Once one end of the pin had worn a fraction more than the other that wear would become exaggerated.
Thanks for the demo on the reed valves. First time I have seen them. An intersting take down and diagnosis. Man that thing must have scremed and stunk when it was going down.
I enjoy your videos very much. I have collected old engines for many years but had kind of lost interest and this has helped renew that interest and give me more ideas on how to repair them. Thanks!
@@stevechristophersen5105 This is true. Unless you happen to find a "donor" compressor, the replacement parts would probably cost as much as a new compressor.
Rebuild kits with two pistons, rods, rings, bearings, and crank shaft average $200. You can buy this same pump new for $150. I had to price out repairs on mine with two bad rods but the crank was good.
Anyone know a good place for parts? I grabbed a free compressor out of the scrap pile at work. The pressure switch assembly is missing and their is another little hole maybe 1/4” diameter and something is missin there too. The pump when turned Over by hand you can hear air go into the tank but I’m assuming you shouldn’t be able to rotate the pump pulley with one finger easily. The guy told me it ran all night without being shut off and it had a issue causing it to not shut off automatically. So then it wouldn’t run again. I’m guessing they didn’t reset the button on the motor or the pump is trashed. Either way I’d like to see what it would take to rebuild it. If I can get it working for $200 maybe $250 it’s worth it to me.
My father and his brothers tried exactly that in the late 40's. Apparently it cannot be done without the counterweight in the crankshaft any engine has. It will ignite and stay down. Greece here.
Nah that's the purpose of the flywheel, to give the engine enough momentum to spin from one combustion cycle to the next. The counterweights you mention balance the engine by counteracting the descending and accelerating piston. Counterweights and flywheels differ in name, design, and purpose.
I think your hypothesis of the cylinder farthest from the fan overheating is definitely of interest and worth looking into. I hadn’t even considered that possibility until you mentioned it, the route I had been pondering: Machines like this which operate at a fixed RPM can also be prone to failure from vibrations from a number of factors like Imbalances in the component manufacturing or excessive tolerances in install. All of those compounded with the accompanying speed changes from increases in loading can suddenly put it into a speed range where vibrational amplitude spikes.
I think the one side blew out because one side was always getting fresh air and the other was always hot the exhaust side but who knows why it was all egged out like that. Keep up the great videos even after a 15 hour roofing day I still come home to watch religiously I love them it’s like I’m there working on it with you. I thank you for sharing
Love, love, love watching your video. learned so much. My brother was the same way, he alway took thing apart. He was 325 lb when he died, he had confidence and self esteem. i'm fighting to hit 150 lb no confidence or self esteem. Please keep the videos coming.
I'm amazed that you don't have an air coooled VW engine based air compressor, I've seen a few over the years. One would fit right in at the new shop. Love the informative videos, keep up the great work!
The difference in wear could be a result of a 2 stage compressor where the burnt piston was being fed higher pressure air from the good piston... more stress compressing compressed air wire it out faster? Along with not being as close to the cooling fan...
Maybe it was leaning toward the pully side and the oil level wasn’t even so the number two cylinder wasn’t getting as much oil to it as it should have?
I’m curious about this since I just found a free 60 gallon compressor in the trash pile at work. The previous owners relative said it ran all night and didn’t shut off then when they tried to use it it was locked up or something. Their is oil all down the side of the compressor which is dirty so it looks like it had a leak. . My guess is it had a air leak or bad pressure switch is why it never shut off but it might have ran out of oil. Think it’s worth the trouble? If not I can always repurpose it into a fire pit or maybe a smoker.
Had that same one. The pump was made of inferior pot metal, the valve plate and gaskets failed as did the regulator. I replaced the pump with one from Harbor Freight for $150 put a new regulator on it and added a check valve to the tank inlet to protect the reed valves. Now it runs much quieter, smoother and more efficiently.
I think everyone who watches this channel spent their childhood taking things apart, I know I did ! The modern world is too disposable, no one seems to want to fix anything just dump 'em and buy a new one. We are the old school who fix things and you cannot get much greener than that!
Me to
And played with Lego.
@@micvanreijen still do that! Have Technics kit 42070 6 x 6 recovery truck, my 9th big Technics kit, taking over the house 😋
Yep, pulled apart many broken things as a kid, when I put them back together working the neighbours brought more stuff over to see if it was fixable.
These days things are bonded sealed, and expode on opening.
@@TheHomeent but still, we give it a go!
Mustie I'm 15 and you have inspired me to start fixing small engines. So far I have fixed 3 lawnmowers and 1 strimmer. You have taught me how to test spark and clean carburetors out and unseize engines. Thanks again mustie because I really enjoy fixing things instead of playing computer games. And I'm making money from selling them
Thank you for your time. I have currently got 4 students watching your videos here in Australia, this is one of them now. We are learning in class about a sustainable future. without this level of willingness to have a go, i believe our future generations will go backwards. I applaud you for your effort to fix things that would be otherwise be thrown away. And I hope you can continue your work. Thanks again.
Nice to hear someone showing kids how about digging into stuff to troubleshoot and fix things instead of just throwing them in the bin and buying another that will last even less time.
If Mustie's style is to your liking you might want to show your student some videos from Dangar Marine - a fellow Aussie that works mostly on boats. Lots of the same kind of stuff - getting things working again but also some maintenance and upkeep videos too. His current project is getting an old steel fishing-trawler back into sea worthiness. I eagerly anticipate hie vids as much as Mustie's!
Wish I had a teacher like you
It is amazing to see how many things can be repaired. Most of the times it is only a matter of cleaning!
RIGHT ON!!
It is amazing how quick and easily some things can be repaired.
The main problem with a lot of things is getting the spare parts, that in part is because most things these days are built to a budget, not a standard plus the fact that the manufacturer rather sells you a new one then a spare part.
"Oh, no you're not!" I spit coffee laughing. I always wondered what was inside an air compressor. Now I understand how they work. Another unanswered question in my mind is answered. Thank you for posting. I learn so much watching your videos. I really appreciate your hard work. I think it succomed to "VW cylinder 3 syndrome" . The failed side got too hot
Man....there is something relaxing about watching your videos. Never stop.
yea right! somewhat asmr XD
yea, he sounds just like Bob Ross, doesn´t he?
Tru
Luke same thoughts here as well. Mustie1 videos are my relaxation. They are addictive. Can't wait for each new release. Old ones are awesome too.
fantastic way to end a long, stressful day. beer and a mustie1 teardown!
The story is all in Mustie's mitts. No pretty nitrile gloves here. I enjoy his meat and potatoes approach in making repairs, reminds me of so many people I know or once knew. I see rusted frozen/ seized parts, worn out wrenches, rounded out bolt heads, nuts and jagged metal edges, the hands say a lot.
This is one of my favorite, most relaxing "Man stuff" channels.
keep up the good work!
I got an air compressor that would turn back an forth about 3/4 of a turn. When I took the head off it was about 1/4 full of rust and water. I drained out the cylinder and removed the piston. Cleaned and honed the cylinder walls. Cleaned up the piston and reinstalled it. Changed the oil (had water in it also). Tried it and it ran flawlessly. I still use it. Got it for free from the side of the road. No parts where needed.
Way to go Charles ! Is'nt it a great feeling to fix something other people just throw away as garbage ?
I fix regularely bikes and 3 wheelers wasteful people throw away and bring them to poor families or thrift stores for kids to enjoy. Oh the smiles I get !
@@marcryvon fantastic!
"That's not a good sign" Fav Mustie reflection! Love how he talks to camera like we are right there.
One might say that the ol' ticker gave up the ghost.
And I love his some time,salty remarks,it's like real shop talk.
I was always taking things apart as a kid and still do at 57 years old 👍 fun to see how stuff works.
I hear you!
Pushing 60, and I still can't resist the urge to tear things apart,
True but usually we at least put the stuff back together and it still works afterwards now, as opposed to being a kid and taking the VCR apart and well we'll just leave it at that HAHA!!!
60 later this year. My Grandfather and Uncle put tools in my hands when I was about 9 and pointed me at a pile of broken stuff. I still have a Russian bicycle wrench my Grandfather brought back from WW1.
@@andyfloyd8583 nice provenance...
Great video. I used to repair air compressors many years ago and if I had to guess, I thought that I saw some carbon at the top of the bad cylinder and I've seen several air compressors that were neglected and the owners put off maintenance so long it allowed carbon to build up to the point that the piston starts hitting the valve plate just ever so slightly until it just gets worse and worse until, well you know what happens then. The wrist pin is the first part to go from repeated contact until it finally gives up the ghost. For those that wonder how you can get carbon in an air compressor just consider that you have all the components required for creating the carbon; oil, pressure and high heat . . . . oh and don't forget, neglect. Air compressors need maintenance too, and I have seen some real badly neglected air compressors. Your video's educate the newbies among us.
When you used your foot to catch the piston I thought I was the only one to do something like that, Thanks for your videos
You're not alone. I'm definitely glad i was wearing toe protection when i caught a ~50 kg server with my foot, though. It mostly survived a fall from shoulder height, bouncing off my shoe.
I liked that you found out what the knock was instead of guessing. I never had a compressor- pump apart, so it was interesting. Thanks
A little lesson on water separators. In order for water to be effectively separated the water has to be in liquid form, when the air leaves the compressor the water is vapor, as the air flows thru the lines the air cools and the water returns to a liquid, the further away from the compressor the more effective the water separator works. It's recommended to be installed down line at least 20ft from the compressor.
That does sound feasible...Mines only about 2ft away...
Tear down videos are the best. One can learn tons about how things are put together and how things are engineered. Thanks Mustie, always a great time!
Used to get into trouble from my dad as well problem was i had access to his tools and love taking things apart then fixing them even though they weren't broke . Keep up the good work
John
Just wanted to say a big thanks mustie1, found my first busted generator on the side of the road, took the spark out cleaned the carb and bam works like a bought one. Learned more from watching some bloke in his shed tinker than i did in 3 years of auto tech at school.
“Burned out air compressor. Will it run?” Not so much. I’ve always wondered what was inside one of those. Now I know. Thanks Mustie!
For anyone who wrenches as a hobby these videos are so much fun. It is how I think anyone who like to paint must have felt watched Bob Ross. It is a happy and calm place of fixing things
Random thought. It looks like the piston furthest away from the fan overheated and began to seize, therefore causing the piston pivot to fail. It makes you wince just thinking about it.
Did you watch the video to the end?
Yes I did, I jumped the gun and commented as I was watching it. I know.
Right on pauline. It probably was low on oil too. Definately over heated. Ruined. Could be rebuilt, if you can get parts. See you over at cold war! revved up yooper
oh the absolute joy of pulling things apart to see how it functions!!!! thanks again
Good example of what happens when you don't check the oil level! Love your vids Mustie..Not only are they informative and entertaining, I just love how you include your fans in how you treat us just like we're there watching/helping/and exchanging views lol. Keep 'em coming Darren!!
Your commentary in it's detail is very valuable. Keeping things going is not only smart it's economical. When someone else gives up on it, you take and revive it. I've seen your videos and I'm amazed at how you can take things and make them run so good. Kind of reminds me when I was working on aircraft and big rig trailers. You fix them until you can't fix them no more. The one thing I like about your video is, you don't speed the video up. When something takes to long, you stop, finish, then start videoing but we get the idea. At least I do. You just save us from going through a drawn out situation and go right to the instruction part. I say keep up the good work, too. An amazing fix it man you are there.
A what went wrong wednesday, wonderfull.
Dear Golf Man
Suggestion:
A wonderful world wide web what went wrong wednesday wideo ! ;-) ;-)
Best wregards.
@@Chr.U.Cas1622 you weat me to it.
@@Chr.U.Cas1622 Whaaat?
Wacko Wednesday
That was fun Mustie1👍 I enjoyed it a lot and I would totally watch more of this kind of content. Thanks for letting me hang out with you in the garage again and thank you for all the hard work you do for us here in TH-cam land.
Those drain valves are a real PITA. I replaced my valve with some fitting and a 1/4 turn valve with handle from Lowes. Best thing I ever did on my compressor. It makes it convenient to drain and then you do it frequently.
dri50
Good mod. I have done that also.
Automatic drain is the best tho, but a better manual one sure is an improvement
And make a drain tube beyond the base so it is convenient to turn the valve. Think that is why it is never done and rots the bottom of the tank...
Another option pull the drain valve out plumb it so the line comes out by one of the feet install a 1/4turn ball valve and your all set
Family Handyman had a good tip. Replace drain valve with a semi air bleeder valve. Pull on cable to release pressure & water drains out. Release cable to reset & Bobs your Uncle! 😊👍
Furthest cylinder from the cooling fan always suffers the most, the carbon build up is from when the oil got low it started to over heat and boil it, Another great video Mustie1. Thank you
I liked the way that you got super quiet when you launched the snap ring so we could hear the landing lmao
that's every mechanics reflex, just waiting for the ping so you can chase it down.
@@TuttleScott That's it. I'm often doing some electronics repairs, every time something is dropped or lunched across the room I instinctively go silent and wait for the landing. Usually there's no other way to find microscopic parts on the floor.
@@TuttleScott It is a natural reflex. Strange thing is that you can pinpoint where the sound came from, but good luck actually finding the part. About a 60:40 chance that you won't find it.
@@NJP76 That's why you keep a magnet wand handy, at least for those ferrous runaways. :P
I use a screen cage with 2 hand holes in it( like a blasting cabinet) this way if something flies, it is also trapped near the launch sight!
So glad I found your channel. Hard to stop, hard to look away. You make everything very interesting to watch and to listen to. Mr. Information in a great way. Thanks so much
Thanks man,first time seeing the guts of one of those. Surprised to how much it looks like a gas motor .
Pretty similar.
You can get a conversion head to convert a Model A engine over to an air compressor that runs off 2 cyls and the engine itself runs off the other 2.
I've used a compressor it was a Ford 300 straight six. Three cylinders ran the motor three pumped air.
I absolutely love watching you take it apart and finding out what it was that failed and how you could make it stronger obviously there's no money into rebuilding that pump but I love taking things apart I take part of my dad's little slot cars which was no big deal back + 86 cuz they're only a dollar now they go for up to $100 a piece I got a pretty badly damaged the back which doesn't allow me to do this kind of work so watching these videos are very satisfying to watch keep up the good work
We were waiting for this. Not as bad as it sounded. Appreciate the teardown Mustie.
indeed:)
i think it fell over when it ran and the one good piston got all the oil and the other got none.
he didn't let it pump up any pressure though, it would have been mega hammering like end of the world and parts are going to fly out.
as other post, maybe leaning and less oil there, or all heat related, since the less broken end had more metal attached and cooling airflow
@@throttlebottle5906 i love that name
good inquiry
I'm about to tear into my shop's 17 year old 60 gallon compressor. Last month one of the flexible lines burst overnight and it just ran to death. So far, this is the most helpful video I've found. I'm buying a new pump. Thank you very much.
Great morning, coffee and Mustie, what a great start to the day.
Bri only one problem...was only 22 min long! Lol
That was interesting! I just brought home an old Sears 18 gal compressor somebody brought to the curb, cleaned it and fixing it up, works great. I got in trouble taking things apart when I was a kid too, 8,9,10 years old, "We just bought you that toy a few days ago, why'd you take it apart?!" Weird thing is that I was going to bid on one like it tomorrow but it's gas powered.
Thank you for showing that, I was very curious
I actually leaned over my phone to have a better look, once the oil pan was off. 🤣
Haha I have done it before too
Wish I would have thought of that, I couldn't see anything!
😂
I was watching at the pulley alignment and kept moving to the right but couldn’t see any more to the right.
I watch welding videos and have tendency to flinch my eyes when they strike up
I paused it and went and got my flashlight
That loose and wore out piston rod was just like my right knee before i had it replaced! ; )
One side is more damaged because it was further from the fan , so one side runs cooler than the other , love this channel 👍
it may have been sitting at an angle with the rear having less oil, but it was probably all temperature related, since the better end had the pulley/fan crank snout with more heat transfer and air cooling.
Glad I found this channel. Really enjoy the variety and your thought process and methods. I'm a former gunsmith and now auto technician, so working on a variety of different things and seeing other people's methods is enjoyable. Great show to watch and learn.
As far as the piston "hitting the top of the head" goes... The "pressurized" air on top probably cushioned the piston from hitting the head. Great "airtopsy" LOL
I think by watching this vid that the wear was on the bottom of the rod thus indicating it was actually going less to the top of the piston and more towards the bottom ( well just not going all the way to the top of the stroke, this also was indicated by the build up on the top of the cylinder walls on the second piston) Just my opinion.
@@fixrite11 Sounds like the case, good observation
One cant just throw things away without seeing what was bad. Didn't expect to see the wrist pin bad. Great job!
If the two pistons are the same size, the second stage piston has a higher operating pressure. One I took apart had two different piston sizes, and the air from the first stage piston went into the second stage chamber and was compressed higher and put into the tank.
I'm not sure your original compressor was actually a two stage compressor, but instead a two cylinder compressor for higher volumes, and 120psi pressures.
good autopsy. It's kind of incredible how things break. I've worked on quite a few different styles of air compressors (mostly in the navy) up to high pressure units that put out 4500 PSI. Thanks for sharing some great content.
I didn't look at the valving very closely, but, often the cylinders operate in series -- the output of one goes to the input of the other, which further compresses the air while sending it to the storage tank. The high-pressure cylinder in under much more physical stress as well as operating at a higher temperature, and that is why one cylinder is in much worse shape than the other.
This may be a single-stage compressor, though, because the secondary piston in a dual-stage is ordinarily quite a bit smaller than the primary in order to equalize the load.
Unit overheated and not maintained, run to death. See it everyday. Most customers never think about their compressors until they don’t have air. Love your videos.
Thank you for satisfying our curiosity Mustie, I hope you get a million views.
Enjoy your channel - tried to rebuild a compressor a few yrs back and learnt that Asbestos gaskets were still present on the reed valve setup. Something to check with old equipment. Was using compressor for bead blasting so it ran more than the 50% cycle time rule of thumb which is why it cooked itself. The hotter it runs the more moisture you trap under compression. On my replacement compressor I ditched the brass drain valve because if it's not easy to access it rarely gets checked. Put an elbow with flexible line to a ball valve at a more accessible spot so I don't forget. cheers
The reason the bearings wore at an angle is that the heaviest load on the compression stroke. During this time, the rod is at an angle to the bore so the maximum load is at somewhat of an angle to the center line of the rod, piston and crankshaft.
I am new to the world of mechanics and to be honest, I really enjoy learning the things I have and what I still am and Mustie1 gives me the inspiration to keep trying and going and continue learning!
Carbon is always an issue with compressors. It looks like a good candidate for a rebuild, but I wouldn't bother with it. Run of the mill single stage. Tank seems to be in really good shape. Didn't see any rust in the water when you drained it.
Great video, mechanical autopsies are always interesting. This compressor, is a two stage. The larger piston is the low pressure side, the smaller one, the high pressure one. the higher pressure piston gets considerably hotter then the low pressure side, and oil is much more critical. Chances are, the oil sealing ring let go, and what you are seeing on to of the piston is burnt oil, then it just expended and began beating itself to death. These things are really easy to rebuild, if your just changing rings or gaskets, but you can get parts pretty cheap.
In Aussie land we call those circlips /snaprings, Jesus clips as in as they're air borne you're praying to or asking Jesus where did that go.
Yes we call them either jesus clips/shit clips as thats what u say as the clip flies off lol 😅😅
When I was 12(58now) my grandfather taught me the Jesus clip term.
He said when it goes flying, you say well Jesus Christ. He had something funny to say about everything. I’m waiting on you like one hog does another. It won’t be long now said the monkey that got its tail caught in the lawnmower. I still miss him.
@@thejeepdoctor my father taught me how to swear in Dutch when he was working in his shed cos you could hear whenever he hit his finger or thumb by his exclamations in dutch
System Renegade na I just call em fucker clips. Cause that’s what I say when I launch em.
A zip tie put loosely through the gudgeon pin (wrist pin) will catch any circlips that try to go aviating. But if one does go - shut up and listen to where it landed. You might just find it.
Thanks for the video sir and your time to make it. It was good to see what went wrong with the old one.
PROGNOSIS: Heart failure...severe failure of the Right ventrical
Mustie... I agree with you. The piston that failed gets less cooling air from the fan. It probably caused the carbon build up due to higher heat than the other piston.... Also, that fan guard is far to restrictive. The way it's been deigned it blocks off at least 50% of the air flow.. If you cut every second rib out on the inside cover where the fan blows onto the compressor you'd get far better cooling and the compressor will last a whole lot longer.. In the past I've replaced that section with wire mesh and it made a huge difference to the air flow.
Haha finally mustie! I’ve been wanting to know how bad this was and you only went and did it for us!!!!
Thank you for taking that apart! It would have left an empty feeling if you hadn’t torn it down. I guess we all have the same tendency to figure how it works and why it failed! I think that is what has made America great! That tinkerer’s curiosity!
In Australia we would call that compressor ROOTED
Or spun? Or fuckedariffic?
Tag it as NFG!
My son would still just call it “ BRO- kan “ ( so would I now )
Stuffed is a better term used in Aus only
Thanks for pulling the old compressor pump apart,. When I watched your first video on this compressor, I wondered what this one would look like.
Leave one piston out and it's a good 1 cylinder compressor
Don't think that works, it's out of balance.
Yeah try that with your car
@@aserta It's only a compressor and it's working at
remember the SB Ford and in-line 6 Compressors?
Very good idea!
Boy! Every time i watch one of your videos i learn tons fo stuff. Thank you for taking that extra time to set the camera in the right place and voice your thougts as you go along. Very instructive.
I like to see you try to make a running engine out of it. You have great video’s keep up the good work
Turn it into a chinesium Briggs Tecumseh Kohler. Lol
If it was an Engine!
@@RANDALLOLOGY A Brumhler?
Why not all you'd need is a correct timing chain and sprocket set and an overhead valve cylinder head and new pistons, rods wrist pins and a new crank and all new bearings
Thank you for the tear down, I've always wanted to see the inside of one of those pumps, but never had the opportunity.
By popular demand! it didn't take much convincing though. Thanks, that was cool! and no blowback from daddy.
Watched the repair video when it came out and was waiting for this one. I've never had a compressor apart either, but, from the sound it was making, I was kinda expecting a rod end problem. What I wasn't expecting was the problem being the pin end. It's now obvious to me that when the wrist pin came out of the bore, it got cocked in the rod, which caused the uneven wear in the rod bore. Now, I'm wondering how, since both "cir-clips" were still in the piston bore, the wrist pin could move enough to come out. Things that make me say hmmmm. Either way, all the movement of the wrist pin and wear on the rods pin bore obviously caused the damage to the rod bearing and crankshaft. They litteraly got hammered into oblivion. Great videos! Love the channel!
You know Mustie1 is not serious about fixing this when he does not use the "Favorite Hammer" to disassemble the machine! Premature Comment Alert! 9:03 The Hammer appears! Thank you for another superb video!
Maybe in the future there will be Mustie Merch where we can buy a tshirt and "the hammer".
@@joolwing I really need one of those hammers....
@@lionreb I really need one of those shirts.
@@joolwing I'd buy a mustie brand hammer
Yup.. I say it was a lack of cooling that made that damage..
Hotter it got, boiled off the oil.. thus the carbon build up, the it started to fail as the "front" (closest to the fan) pressed on...
Thanks for tearing that down. Watched the change out video and wondered what made it fail ...
You never fail....
Ha! When I was young, I got in trouble for taking everything apart. I can remember my Grandma yelling at me “You don’t come into someones house and take things apart.”
One of your best vids Mustie. I love it when you get right down to the nitty gritty.
Another fantastic video, but I would really like to see you rebuild that CT70 motor....
Thank you for that. I now know far more about comressor heads than ever before, and I encountered my first some 45 years ago.
The other thing in air supply systems is the pressure regulator. It would be good some time to show how they work; all that flapper & nozzle stuff. A guy named Harry at a Honeywell training centre taught me about regulators those same 45 years ago but I'm not so sure I retained everything he said. Time for a recap.
low worn out oil and over heating due to the fan like you said
That and possibly not sitting level.
@@godmodeforever My thoughts too. I think one side ran low of oil for some time. Unusual to see a gudgeon pin wear like that but in this situation being a pump and not an engine it was able to survive longer and thus show the wear over an extended period. Once one end of the pin had worn a fraction more than the other that wear would become exaggerated.
The pulley also is a heat sink, pulling heat from crank and also crankcase.
Thank you for the strip down. It is so cool to see what was going on. Not seen a piston go like that before cool.
I can forget about the world problems watching your videos.
Thanks for the demo on the reed valves. First time I have seen them. An intersting take down and diagnosis. Man that thing must have scremed and stunk when it was going down.
Thanks. There is nothing wrong with a long video ( from my point of view ).
I enjoy your videos very much. I have collected old engines for many years but had kind of lost interest and this has helped renew that interest and give me more ideas on how to repair them. Thanks!
Looks like you could rebuild it if you wanted to would make a great video
Unfortunately, not cost effective. :(
@@stevechristophersen5105 This is true. Unless you happen to find a "donor" compressor, the replacement parts would probably cost as much as a new compressor.
Rebuild kits with two pistons, rods, rings, bearings, and crank shaft average $200. You can buy this same pump new for $150. I had to price out repairs on mine with two bad rods but the crank was good.
I'm thinking the same thing
Anyone know a good place for parts? I grabbed a free compressor out of the scrap pile at work. The pressure switch assembly is missing and their is another little hole maybe 1/4” diameter and something is missin there too. The pump when turned Over by hand you can hear air go into the tank but I’m assuming you shouldn’t be able to rotate the pump pulley with one finger easily. The guy told me it ran all night without being shut off and it had a issue causing it to not shut off automatically. So then it wouldn’t run again. I’m guessing they didn’t reset the button on the motor or the pump is trashed. Either way I’d like to see what it would take to rebuild it. If I can get it working for $200 maybe $250 it’s worth it to me.
Great to see the other motor being installed, and for my part even better to know how messed up this motor was. Keep up the good work.
My father and his brothers tried exactly that in the late 40's. Apparently it cannot be done without the counterweight in the crankshaft any engine has. It will ignite and stay down. Greece here.
Nah that's the purpose of the flywheel, to give the engine enough momentum to spin from one combustion cycle to the next. The counterweights you mention balance the engine by counteracting the descending and accelerating piston. Counterweights and flywheels differ in name, design, and purpose.
@@mwilliamshs Right, flywheel, excuse my english.
I think your hypothesis of the cylinder farthest from the fan overheating is definitely of interest and worth looking into. I hadn’t even considered that possibility until you mentioned it, the route I had been pondering:
Machines like this which operate at a fixed RPM can also be prone to failure from vibrations from a number of factors like Imbalances in the component manufacturing or excessive tolerances in install. All of those compounded with the accompanying speed changes from increases in loading can suddenly put it into a speed range where vibrational amplitude spikes.
I think you hit the nail on the head, the bad cylinder was hotter because it was farther from the fan.
Thanks for tearing that apart. I have never seen the inside of one either. Not a lot of surprises, but still nice to see. Love the channel!
22:24 I was waiting for the compressor to lift off...😋
I think the one side blew out because one side was always getting fresh air and the other was always hot the exhaust side but who knows why it was all egged out like that. Keep up the great videos even after a 15 hour roofing day I still come home to watch religiously I love them it’s like I’m there working on it with you. I thank you for sharing
Mustie is even using his feet in this tear down! I love machine autopsies.
Love, love, love watching your video. learned so much. My brother was the same way, he alway took thing apart. He was 325 lb when he died, he had confidence and self esteem. i'm fighting to hit 150 lb no confidence or self esteem. Please keep the videos coming.
That poor dog, does he still use that bowl?
I was thinking the same thing. I hope he wipes it out between feedings!
On the plus side, the dog doesn't squeak anymore.
@@Darwinpasta lol
Oh, THAT bowl is for the mecha-dog... ;)
I'm amazed that you don't have an air coooled VW engine based air compressor, I've seen a few over the years. One would fit right in at the new shop. Love the informative videos, keep up the great work!
The difference in wear could be a result of a 2 stage compressor where the burnt piston was being fed higher pressure air from the good piston... more stress compressing compressed air wire it out faster? Along with not being as close to the cooling fan...
That was my thought as well.
I'm surprised it didn't knock the top right out of that piston. Amazing. Great video by the way. Thank you!
Maybe it was leaning toward the pully side and the oil level wasn’t even so the number two cylinder wasn’t getting as much oil to it as it should have?
Looks like it overworked itself but it had a drop of oil for it not to seize, interesting video Darren, can't wait to see what's next .....
Nice high volume cylinders. I say rebuild it!!! I'm in for $20 to see what it takes. Others will chip in for sure!
Really when he is *that* deep into it already he might as well repair it!
Low oil. It is a standard situation. I've seen this multiple times. And you are very correct about the heat/no heat issue.
I’m curious about this since I just found a free 60 gallon compressor in the trash pile at work. The previous owners relative said it ran all night and didn’t shut off then when they tried to use it it was locked up or something. Their is oil all down the side of the compressor which is dirty so it looks like it had a leak. . My guess is it had a air leak or bad pressure switch is why it never shut off but it might have ran out of oil. Think it’s worth the trouble? If not I can always repurpose it into a fire pit or maybe a smoker.
Yes, with a little effort and some ingenuity old storage tanks make excellent grills and smokers.
Thanks for making this video. I have been wanting to see what had happened.
I think your theory is right. That cylinder was running hotter.
Had that same one. The pump was made of inferior pot metal, the valve plate and gaskets failed as did the regulator. I replaced the pump with one from Harbor Freight for $150 put a new regulator on it and added a check valve to the tank inlet to protect the reed valves. Now it runs much quieter, smoother and more efficiently.