Old School Repair | Experience Machinist Rebuilding Wrecked Crankshaft From Main Journal #brokencrankshaft #machineshop #machinist #cuttingedge #pakistanitruck #amazingtechnology #crankshaft
40 years ago I worked at a marina and we had a pre WW2 Bucyrus Erie crane with an old 371 Detroit diesel in it. It only ran at an idle to run the winch. Crankshaft broke in half at a main bearing. It was so old and obsolete that no engine was available. So the owner was looking at $100,000 to buy a 50 ton crane. We had an old welder from Nigeria that said I will fix it for free if you pay me $500 for every month it keeps running for the next 2 years. Owner said sure go for it since it was stationary and we just lifted boats off of trailers and swung them out into the river just idling the engine. I was the youngest mechanic that was tasked with helping him fix it since he was just a welder and had no tools. So I pulled the engine oil pan off and cleaned off the worst of the oil. I was expecting him to have found a crank somewhere. Nope he simply took a die grinder with a carbide bit and rigged it up so it was inside a large shop vacuum hose so all the metal flakes were sucked up. I slowly turned both halves of the crank still in the block as he ground down the journal. Then he measured the bearing play and using paper he took up all the play in the remaining 3 main bearings. He then tack welded it and took out the paper spun the crankshaft and measured the run out on the end of the crankshaft. Satisfied with the results I bolted a steel bar on the front of the crankshaft. I would turn it slowly as he welded one complete pass. Then turn it slowly for a minute as he chipped off the slag. Then he would read the run out and decide where he would start his next pass. He was welding lying underneath the block and he was a better welder than any licensed pipeline welders that worked there. After about 30 passes he declares it is perfect and the run out was 0. So I am expecting that we now will take the crankshaft out and have it machined. Nope he declares we will just let it idle on 3 main bearings. It had oil galleries drilled in the block and he ran an external oil line to somehow bypass the welded oil gallery in the crankshaft. We never did anything else in the way of bearings or seals. We filled up the oil pan with diesel fuel instead of oil and he had put a bunch of magnets in the oil pan to catch any metal. Started it and let it run for a minute drain the diesel, clean off the magnets. Did this 3 times then filled it with oil and it ran for 25 years. It was simply beyond belief to anyone that worked there that he fixed it with no parts at all and had welded it while still in the crane. Truly amazing what you learn to do when there is no other option plus he made $12,000 for his knowledge. This guys repair was cool but I got to see the Nigerian method and it was way cooler to be a part of it. Sadly new owners bought the marina and scrapped all ugly old rusty equipment.
у нас в России делают. вещи не возможные ))!! но я думаю современные моторы серийных авто. не выдержат такое. так как там все алюминий ! новые авто бмв . мерседес проезжают 60000 -150000 км . и просто так починить ее без оригинальных запчастей большая проблема! ломается новых авто все! 5 лет в утиль. и покупай новую! металл двигателя алюминий и тонкий
Amazing skills as a machinist and welder. He machined both ends of the broken crankshaft, aligned it and did an interference fit with a hammer, welded a new journal, straightened the entire crankshaft, machined the new journal to size and polished it. Using ancient machinery like it was the latest. Bravo!
Don't think he used both halves of the original crank. He bored a hole 1 1/2" or so into the main on one side, then cut the journal down to leave a 1 1/2" pin sticking out on the other side, where did the extra material come from? I'm guessing they had another doner crank to use for one of the halves. Guy does have mad skills, though.
@@stevengabalis4986 yes you know he did this before so likely they keep whatever left of the cranks and use them to repair other cranks that broke somewhere else.
I am so inspired watching these guys work in hole-in-the-wall shops, with dirt floors, no HVAC, sandals and practically no safety equipment. It really amazing to see the craftsmanship. It also makes me appreciate how fortunate we are in the US...
Yeah, "fortunate", in the US welders have to buy their own protective gear, some are working in regular clothes, and you have morons like Elon Musk running companies, trying to do unionbusting, with all their wealth...
Сварной шов просто песня, молодцы ребята трудяги.представляю чтобы они творили если им дать хорошее оборудование и условия.мое почтение, здоровья.👍👍👍👍👍👍👍🙂🙂
@@user-fd6ny9qq2e fíjate en minuto 8,30 que sube el segundo pedazo de cigüeñal y es larguísimo lo que se ve como el cojinete quebrado ,osea lo alargaron antes de ponerlo en el torno ,por eso puede tornearlo y queda bien
Wow, straightening the crank within 3 divisions. The indicator is 0.01mm per division. so he straightened the crank to a total run out of 0.0012" BY HAND !!! And the carbide tips appear to be hand brazed on to the tool ! A folded piece of abrasive paper set between a bar and the work !! Polishing the journal with abrasive glued to a wooden holder ! Polishing the rod journals as the lathe turns ! I am truly amazed, this has humbled me and I thought I was good, but not any more. I just learned a lot, mostly humility.
This guy is an artist. Like most of the hard workers I’ve watched on your other videos. I love overcoming obstacles and making what you have work for you.
Not often I come across a 30+ minute machining/welding video and watch it through and through, but this was absolutely worth watching. Awesome skills. I will never complain about a Miller or Lincoln slightly inconveniencing me anymore. Man did some amazing work with some quite old machinery. Also his way of straightening the crankshaft is insane.
This guy is great considering what he has to work with. He's very meticulous with alignment, good welding (he has very basic welding equipment). A good craftsman.
Y la habilidad de tener el casco con las piernas y así poder usar las dos manos ,es de otro planeta el tipo ,y así y todo lograr una soldadura sin fallas Lo que si falto es agregar primero al cigüeñal para luego usarlo como perno de guía y falta tratamiento térmico ,y todavía no se si aguantaría ,el uso
@@cadtecsimplexcam4248 Its not like this is the first time they did this. It for sure runs, if it wouldn't they wouldn't do it/go down as a business. Look how many crankshafts that guy has in the background. We're just obsessed with overworked engines where everything is pushed to the max, same with the work cleanliness in a shop. At the end of a day, gasoline washing the dirt off and 2 oil changes after everything is assembled, makes the engine just as clean on the inside.
@@em4703 It will run question is for how long, and in what kind of engine. If the engine is very understressed, like a big naturally aspirated Diesel that revs to 2k, it might work but any kind of modern engine with reasonable specific power this would not hold. You do not weld engine internals because the heat makes the steel weak. Modern engines have forged or case hardened crankshafts for a reason.
@@stanley917 Interesting, they all seem to use this type of welding technique over there. I've never tried welding myself, seeing this makes we want to take give it a try.
The welds are legit, not taking anything away from him at all but not everyone can turn their work while they weld. Pretty cool to just start his arc and then turn the crank to run his bead
here in Italy, an advanced country in the motoring field, if I presented myself with a broken crankshaft and asked a mechanical workshop with cutting-edge equipment to repair it, they would tell me if I'm crazy. Probably a job like this will have been rewarded with 50 euros ...... a great craftsman.
This professional left me speechless. With that little garage and that tool, it's amazing what He's accomplished. My admiration and respect for this professional, everything done perfectly. Greetings from Germany 🇩🇪
Absolute respect for craftsmen who can make such repairs the "old fashioned" way. In the UK people who could do such repairs were found easily in the Birmingham area until the 1960s. These days the "modern world" is all about consumerism, if it's broken just buy another one, so these skills are being lost adding to the waste and consumption, not a good thing where there are items that can be repaired with some ingenuity and hard work. We have alot to learn from people like this, if only we could swallow our pride.
@@vikingsmb Any1 with IQ higher than 50 knows this type of "repairs" are bullshit. The crankshaft are made from hard steel to withstand great forces, and this "welding" spot is shit tons of weakspot. If this will be ever mounted probably will breake loose again after very short time even unloaded. They do stuff like that in india coz? You watched a lot of youtube videos? Chech the % of death ratio in india :) Especially at work.
I live in the UK and went over to Pakistan to buy an old school Toyota BJ40. Had guys like him strip themp vehicle and rebuild it. These Pakistani craftsmen are very skilled and with the limited tools and lack of modern equipment, they do a magnificent job. Respect
Trabalho formidável! Se o fazem, é porque tem experiência e pode ser aplicado! Não fariam a montagem de um motor cujo virabrequim facilmente quebraria! Pelo que entendi, foram aproveitados peças de dois virabrequim!! 👏👏 Parabéns!!
Tak tohle je teda fachman , to obrovský respekt. Strašně šikovný chlap, jsem od řemesla, ale takhle vařit kliku bych si netroufnul. To jsou sváry jak z automatu, opravdu se klaním.👌👌👌👌👌👌👌👌👌👌👌👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
i think we are all afraid to try stuff. and its because we live in a break it.. replace it world.. i welded stuff at my work that normaly would be replaced.. because i hate it.. got a raise for my skills while i think they are stupid xD
Not sure what you mean by up to date tools? That old lathe and welder are as good if not better then modern ones. CNC isn’t the answer to anything except volume production, and stick welding is the best method for this type of job.
@@Trump985 I'm saying if he had all the best-of-the-best this dude could do some crazy stuff. You can tell he knows what he's doing stuff that I don't ever see people do too much. And his welding was on point he could be getting paid some good money in the US
@@blackdaan Sorry dont agree. With certain things breaking it and repairing it means additional risk that can end up with people dead or additional costs to company. the risk just isn't worth it. In this case as a professional company i would not do this type of repair.
@@Klote3241 yea that is treu. India does this to save money. And here replacing is cheaper. But we got addicted to that.. I work for a pump factory. We got a workshop for repairs. When a wedgetrack is damaged. Because the impeller broke of. Than they buy a new rotor. And i talked with the head machinest how it can be that milling a new slot is more expensive. He explained the rotor cost 40 bucks and they calculate me a hour to do so. Slot+check+balancing out. So its cheaper to throw them away. But yea. I own a milling machine myself and a lathe welder etc. So what do i know. I just love this kind of mantality But for safety ofcourse i agree. But did you know there are videos out there of shops like this vid. Making pistons. And propane gas tanks for the eu and us market..
Very skilled machinist. Any one else notice that's not the same crank? Its 2 different cranks made into 1 good one. Both ends he machined where a complete bearing journal that was torched off.
I was wondering how he got the extra material for the joint. Thanks for clearing that up. I suppose there's a good probability the old crankshaft was bent also.
Extremely skilled and diligent. They appreciate what we Europeans and Americans no longer can, because we have become accustomed to the disposable and single-use world. I feel ashamed and have immense respect for them.
I ground and welded crankshafts for 43 years and am amazed at this craftmanship. We straightened cranks in the same pressure technique and used similar v-block stands, but always had some kind of hoist! I like his hand-held polishing rig too! It looks like he even makes a nice new radius on both sides of the journal. Years ago, I saw an article about the Kyber region of Pakistan where men were hand building firearms with what appeared to be vises, hack saws and files,(probably some kind of fire too), making functioning guns! All working people should witness this kind of videos to learn from and appreciate!
Pretty dam good. You can tell this guy has done many before, and I’ll bet he wouldn’t be in business if his success rate wasn’t good. A+ for effort.👍👍👏🏻👏🏻
@@Rongamer104 Yes really, He has very good basic welding skills. Unlike most of our University Educated (Textbook Engineers) who can only talk about it.
Nope! A Fitter and Turner, this is how we roll my dear friend. Us ARTISANS keep the machines of the world running and build the machines to keep the world running 💪
Absolutely Well done my friend goes to show you don’t need fancy computers to do a job like this old school tools and machines get it done just as good more hands on measuring cutting measuring bravo to you sir
@@WhiskeyGulf71 I mean the finished weld is so even and neat it looks better than some tig welds, I am well aware of the difference in arc and the other types of weld. Also that amp stud welder he's using is at least 30 years old, the curved shape sort of gives it away. Any I've seen since the 90's have square enclosures.
@@mercedesvan-doors34 It’s what arc welds look like if the correct amps are used with the correct grade of fresh rods, moisture is the biggest problem with arc welding rods. His welder is made in his region, it’s a basic design that has fixed outputs but i would say, judging by how clean the terminals & housing were that it is very new.
Ich arbeite hier in Deutschland an einem sehr modernen Drehautomaten bzw Drehbank und muss sagen besser hätten wir das hier auch nicht machen können. An einer Drehbank wie der gute Mann sie hat würden viele von uns kapitulieren müssen. Das könnte keiner von uns so gut machen. Leider gibt es hier nur noch wegwerfen und neu kaufen, die Arbeitsstunden könnte keiner bezahlen. Mein Respekt und meine Hochachtung für diese Arbeit.👍⭐⭐⭐⭐⭐
I agree he is a very talented scammer, no one could ever tell that that crank was scrap until they put it into an engine. I have seen major weld repair on engine blocks that they even make the weld look just like cast iron so a buyer would not know the block was scrap.
@@thepubliceye given the tools he has it's possible for that crankshaft to work, now with that being said I do agree with you and if it broke at that point there has to be a reason it broke and the weld is not as strong so it definitely is a high risk situation for the amount of work put into it.
@@thepubliceye as much as I want not to agree with you I can absolutely see exactly what you said happening. And now why I will never buy a used crankshaft...
Keep in mind that even if the work has an impeccable finish; There exist underlying empty parts, "mechanical" joints and spaces without solder material that make that section weaker than the rest of the piece against torsional forces. It seems like a relatively exclusive and quite expensive job for an emergency solution, because the energy, material and time required are very high.
Жизнь кипит, даже кишит. Посторонние звуки транспорта, мопедов. Люди заняты делом, приносят пользу. Мне в голову лезут мысли, зачем разрушили СССР, там тоже люди работали.
Pakistanies son geniales,arreglan todo ,con pocos medios tecnologicos hacen maravillas Nos dan una gran lección que con esfuerzo y trabajo todo lo repara,desde Chile un saludo a tan esforzados trabajadores espero algún dia tengan la recompenza por su esfuerzo Hacen mucha falta talleres Pakistanies por esté país
Посмотрим гараж 54 они на жиге так же сварили и даже с минимальным биением. Тест проводили под разными нагрузками и этому колену хоть бы ничего ) так что можешь не переживать все работает и очень долго
Treba ljudima pokazati sta je rad i znanje pod vrlo malim uslovima ja sam zivot proveo u kamionu i dobro razumijem koliko je to odgovoran i precizan rad.Bravo sve pohvale.
Мастер молодец, в таких условиях отличная работа, но напрасная и не вся. Диагональные масляные каналы в самом вале заварил(эти масляные каналы видны были когда вытачивал втулки для посадки одной половины вала в другую) под углом от шатунного колена в коренной масляный канал идут, который он в конце видео шарошил и точил от своей сварки. Отсюда вопрос: во вкладыш коренной как масло поступать будет? Весь коленвал внутри в масляных каналах, по которым идёт смазка коренных и шатунных вкладышей. Вал в месте, где варил, был немного длиннее (в начале видео когда доставали расстояние между коленами больше в центре, чем на других коренных шейках вала), он же две части вала одну в другую забил из-за стачивания коленвала на 2-3 сантиметра. Красивый, титанический, возможно точный, но напрасный труд.
он же отдельной вставкой соединил половины. Тут безотносительно геометрии полно вопросов. Когда обтачивалась сварка, стружка шла "змейкой", это значит, что металл сырой и долго это ходить не будет. На заводе шейки закаливают при помощи ТВЧ. Будь шейка закаленная, стружка шла бы мелкой крошкой, да и не факт, что старые резцы ее взяли бы. Вопросы вызывает и прочность соединения: сварка делает структуру металла неоднородной, возникают внутренние напряжения. Такое варенное колено сломается снова довольно быстро.
@@AKWoland там толщина закаленного слоя минимальная, а сам вал и должен быть гибким, что соответствует стружке. Не знаю насколько там полезная или нет работа. Надо смотреть на допуски самого двигателя. Есть такие моторы которые с допуском в десятку будут работать и работать. Маслянные каналы они потом сделают. Так в описании написано.
Геометрию он потом правит гидравликой. С чего ты взял что маслянные каналы заварены? Он как раз и выточил так чтобы отверстия на двух половинках совместить.
не обращайте внимание, !!!! тут в комментах собрались мастера 99 уровня , таким уродам даже 10 часть этой титанической работы не возможна , я еще не говорю о сборке целого вала !!!!!!!!! @@merlexrus
Broken crankshaft? No problem! At We Are Being Crankshafts, you can be up and running within hours! And without that nasty expense for a new crankshaft! Eye protection? We are spitting upon your eye protection! I especially liked the cig during part of the fix. Seriously, I could really identify with this process, because I machined and ground a six-cylinder crankshaft on a cheap lathe (although it was a much smaller crankshaft) Kudos to the chef! Beautiful welding!
@@porschewod3550 а ты в этом ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-XsYNcJcSXNs.html видео с твоего канала на каком языке говоришь? На эльфийском?
I am not easily impressed. This man is very talented. I worked in a machine shop for about 5 years , his skills are as good or better than any I have seen. I am impressed !
Это горе спецы, коленвалы не варяться, только просачиваются под ремонтный размер в соответствии с допусками. Сломанный вал это металлолом. Если бы так можно было их сваривать в России давно бы уже делали это. Коленчатый вал изготавливают из ковкого чугуна
@@user-zc3ty7ur2o Это сталь, сырец. Твердости нет совсем. Ее хоть молотком ровняй, с чугуна уже давно колен не видел. Даже на старых японцах сталь. Вопрос в другом, сколько такое колено проходит? Если не турбодизель, а это скорее от какого-то грузовика колено, то побегает, если с турбиной, ну, дай бог чтобы не перегружали. А вообще там новый надо было ставить, да и наждачкой полировать это такое, там же под вкладыши полировать надо. Ну если это у них ездит, то пусть будет так
@@erickmoenga1206 This crankshaft is from an old diesel engine. YOU CAN NOT, do this on a modern cars crankshaft it will snap again in under 1 min. The vehicle in India/Pakistan/etc. are from a diffrent area in time. Machines where build to last back then not like the trow away culture we have today sadly :( But people dont want to wait 2 - 3 weeks till that guy has time to fix there crankshaft. The want a new Shaft asap!
@Felix Spilles that's where you're wrong i have a mechanic who does all the time in Africa....most of our cars are pretty modern...but in western countries they don't....i am American i can tell you our mechanic will tell you to buy a new engine because they don't want to fix it
Смотришь этот сюжет и проникаешься огромным уважение к первобытным мастерам ,высочайшей квалификации.Вспоминается своя юность,история нашей страны.ПТУ для хулиганов,вечерние школы,заочное и вечернее обучение .Первая зарплата ,которую ты до копейки отдал Маме.honor and respect for people of labor.
Amazing job maintaining the cranks centerline. One thing I missed or did not understand is how he knew where to place the two pieces together to maintain timing. Either way, had I not seen this done, I would not believed that this job was possible. Brilliant 👏
Nice work right there. It looks like he had a donor crank to use to make the repair though. The original broken crank was broke right at the face of the counterweight and the ones he used for the repair both had stubs to machine down to make the fit the correct length. You can also see the torch tracks in the end of the crank pieces where he cut them, that is why they are so hard when he starts the original facing cut..
Actual use of dial-indicator, believes in precision work. Makes a big difference. I was getting a bit freaked out, with his hand in the crankshaft while it was rotating though.
I'm surprised his sleeve hasn't caught on a burr and had his whole body dragged between the crank and the toolpost and shredded and ripped apart into a pile of crushed bone, meat giblets and bloody rags.
Parabens pelo trabalho. Vocês dão o exemplo do que é ser profissional na profissão mesmo com tão pouco recurso para trabalhar. Simplismente magicos show 🙋🏻👏👏👏👏👍🇧🇷🇧🇷🇧🇷🇧🇷🇧🇷
Really great seeing this obviously very skilled and experienced craftsman/technician performing his work. The two crankshaft pieces he is working on don’t seem to be the ones removed from the engine at the beginning of the video. The crankshaft breakage was at an angle. During processing, the craftsman is turning down one one the crankshaft pieces at the breakage area and hollowing out its center (female). He then turns down the other crankshaft piece at its breakage area and leaves a stub at its center (male), to be inserted into the first crankshaft piece. Now the two joined crankshaft pieces together are shorter in length than the original crankshaft by the length of the aforementioned stub. Or has the craftsman made both crankshaft pieces “female” and joined them by a common pin? If so, that important step was not shown in the video. Or did I miss something? Thanks for making the effort of filming, editing and posting these very satisfying videos!
Looking at how many cranks were in the shop they may well have been the ends from two different shafts with a common inherent fault of breaking in the same place
The joining process is way more interesting - they just hammer (!) one half into other - without any measures for rotation angles, oil channels adjustments etc... It looks like totally garbage work just for video
To be honest, his work is professional and precise. Using dial gauge for precise centering on lathe. This is a good repair for this part of the world. I would order the crackshaft, but it may be too expensive to compare to repairing.
Bonjour ces personnes qui réparent comme je l'ai déjà dit sont vraiment très très fort accompagné de personnes comme eux tu débute la traversée du désert avec un vélo de l'autre côté tu te retrouves avec un 4x4 qui fonctionne je dis cela pour simplement dire à quel point je les admire je suis abasourdi par leur maîtrise dû travail qu'ils font punaise que je l'ai admirent
always a pleasure to watch a master craftsman in action. He knows what he is doing and does it with half the resources of what I would expect and with great care to the end result.
This some skill to be admired, good work sir. You would never know that crank was broken in two. Awesome. Respect to people like this. In most country's this would have been scrapped, but not in this machine shop.
That's the key. "Realism" has gone to ridiculous levels and all ancient wisdom is being tossed aside as superstition. Basicly science religion has made it so that while most of the people think something is impossible, it is so and only very strong minded persons can dispell the mass dispell that is all around us. There is in principle no limits what mind can do if you have true belief in accomplishing something. Before Musk you could ask any top rocket scientists and they would tell you it's not possible to make a reusable rocket that can land itself whit its main motors. We could truly do wonders if people would not put each other down all the time, starting from kindergarten.
The alternative in that region is probably that your truck will never run again and you won't make money. With that in mind you would not have a choice but to install a welded crankshaft.
@@truffleshuffl I don't think so, that would make the process more expensive. It is probably cheaper to replace it again if the engine breaks down after the next 700.000km.
This is the first time when I watch these types of sketchy repairs that they clocked it out. I would actually like to see the sequel where the crank go’s into the engine.
@@berserkanonimus1917 мыкола, учись работать, привыкли тлько паразитирвать на остатках СССР. Зп 30 лет ни одной подстанции не построили. "кормильцы" ухаах. Кто из вас не сгинет за печеньки нуланд будет трудом зарабатывать, а не как раньше-грабёжом да рейдерством
This guy definitely has some talent, especially being extremely limited on tools. We have guys here in the states that can’t do this with all the new machines and equipment available to them. Having a welding background, I think guys should know how to do things manually like this before they become dependent on new age machines.
it used to be I live in the states and back in the 70s and early 80s my grandfather used to repair crankshaft he had all the equipment at his house after retirement he did alot of this work at home .
You have no idea what you're talking about to say that. You've definitely never been on any farm in America. Mills and lathes are common. We make our own shit when things break because you can't wait a week and let the crops sit while the John Deere or Case dealer's service guy takes a week to show up.
Seriously?! We have the best machinists in the world in the states, and most of them are working on their farms and in their garages, you obviously haven't a clue as to what you're talking about!! PS Why do you feel the need to insult men here in the states?! Are you anti-White?!
I have now seen that engineering can be poetry. The sheer skill and intelligence of these me. To do this in these very basic workshops. And to gauge by eye and simple tools to thousandths of an inch. Mind blowing 😊
