Can a Broken Crankshaft be Repaired ? Yes its Possible with Amazing Skill
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- Опубликовано: 15 май 2023
- Can a Broken Crankshaft be Repaired ? Yes its Possible with Amazing Skill
Connecting two pieces of a broken crankshaft is a challenging task that requires specialized equipment and expertise. Crankshafts are essential components of internal combustion engines, responsible for converting the linear motion of pistons into rotational motion. When a crankshaft breaks, it can cause significant damage to the engine, leading to expensive repairs and downtime.
To connect two pieces of a broken crankshaft, the first step is to inspect the extent of the damage and determine if it is feasible to repair. If the damage is too severe or in a critical area, it may be necessary to replace the entire crankshaft. However, if the damage is repairable, the next step is to prepare the broken pieces for welding.
The preparation process involves removing any debris or foreign materials from the broken surfaces and machining them to ensure a clean and precise fit. The surfaces must be completely clean and free of oil, rust, or any other contaminants that could compromise the weld quality.
The actual welding process involves using a specialized welding technique called "crack repair welding." This process involves heating the broken surfaces of the crankshaft to a precise temperature using a welding torch, then applying a filler material to fuse the pieces together. The filler material must have properties similar to the original crankshaft material and be compatible with the welding process.
After welding, the crankshaft is re-machined to its original specifications, restoring its original strength and functionality. The re-machining process involves cutting and grinding the welded area to ensure a smooth surface finish and correct dimensional accuracy.
Connecting two pieces of a broken crankshaft is a complex and delicate procedure that requires skilled technicians and specialized equipment. It is critical to ensure that the repair is done correctly to prevent any further damage to the engine and ensure reliable operation.
this video is sure to inspire and educate.
So grab a cup of coffee and settle in for an in-depth look at the art of this mechanic
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This dude is a MASTER MACHINIST! No, he doesn’t use the latest technique with fancy tools but I bet his repair will out live the life of that crankshaft! Well done sir!
No it absolutely wont
Благодаря такому коленвалу кто-то влетит на дорогостоящий ремонт
Even if this man is very skilled his work is useless, the crankshaft will break again right next to the weld.
Yes, this halfass patch won't last one good dyno run.
главное появился ИНДИКАТОР ЧАСОВОГО типа и МИКРОМЕТРЫ есть!!!!!!! это очень зажиточные мастера, обычно циркулем на глаз посадки все делают и выставляют с точностью до сотки с помощью проволочки!!!!!!!!!!!! это уже мастера высшего класса!!!!!!!!!!!!
Excellence Work on The Lathe . Top Video 👍
Amazing skills.
My Uncle Burt welded up our Cessna crankshaft after it broke. It runs like new!
Why is it these people never learn, that these repairs NEVER last!
Built in repeat business.
If you pay attention to the video, you will notice that he's not repairing a single crank shaft. The place he's welding is not where it breaks. You can see that both cranks broke beside that where the journal joins the crank. He makes a pin on one side and a hole on the other, press fits them together, welds it up and turns down the journal. The point he repaired is supported by bothe solid metal internally and the main bearing. It's not going to break there. I think I can safely say I have never seen, or even heard about, a crank shaft breaking in the CENTER of the main bearing. It just doesn't happen.
@@michaelallen1432 This crankshaft was made out of a ONE piece drop forged steel casting.....The forces involved in breaking that crankshaft were enormous!.....It will fail again...
@@chrisball3634 it will not break, the weld is located in the place where the bearing is supported, each bearing repair uses 2 bearings, the break usually occurs where the connecting rod goes, the weld is made where the crankshaft bearing goes
@@DanielSilva-jj2lz So why did it break initially?
هذا هوا الشعب المكافح تحية طيبة وخاصة إلى من يصنعون الحياء يوجد قطع غيار جديد ولاكن نعترف بلبداع هولا هم أبطل وأساتذة هم من يستحق الدعم الفني للمنتديات العالمية
وليس لقطع غيار جديد هل فهمت
تبنا هذهي الايادي الذهبي وقم بدعمهم حتى عن طريق الاستثمار الدولي
قل خير او الصمت احلى 😂😂😂
Mindblowing
But should adopt safety measures......
All that just to wind up in a scrapyard a few weeks later, if that.
Can you imagine their warranty policy?
Ok I give you free 2 hour 1 block warranty which ever comes first.
Работа сделана хорошо, и соосность показали и биение в 1 сотку. Все отлично, даже заварили без пор, но коленвал от этого прочнее не стал, сколько он реально отработает. Это колено скорее все с дизельного с низкими оборотами двигателя, скорее всего даже дойц, они ходят в оригинале по 30 тыс часов спокой, сколько этот проходит?
It will break. The steel is definitively not the same in the crankshaft and in the welding, so it's a big fragility.
there are dozens of reapair with minimal tools in Pakistan videos . I agree hi tension steel or metal fatigue is different than well done honed buffed crankshaft good faith metal repairs
It's about how soon. Sometimes gamble pays than buying a new crankshaft .
Crankshafts are made from mild steel, not very different from a welding rod. The only unknown is the metalurgy at the weld spot, the parts being welded are massive and temperature can't reach levels comparable to a furnace. Most likely, the engine that will be repaired with this cheap part is so old and decrepit that it will fail before the repair fails.
I'm not so sure it's going to break. Notice exactly what he is doing. That's not one broken crank shaft welded back together. That's two crankshafts broken on either side of the main bearing. Notice what he does. He makes a pin on one end and a hole on the other. Then he press fits the two halves together. Then welds up the main bearing journal over it. The weak spots are where the journals join the crank. You can see how it broke out there. Not where he welded it.
I suspect they all fail like that, and most in scrap yards are there because that part failed. Otherwise he would have just went and found a serviceable one rather than having scrounged up two broken ones to make a whole one from.
It's also a good bet you can't just go buy one.
Oh, that explains it. I was wondering why he shortened the broken camshaft. 😂 Really skilled man who knows what to do.
Мартышкин труд, лопнет эта порнография под нагрузкой тем более на дизеле, про закалку шеек коленвала в тех края похоже даже не слышали.
Mantapppppp bossss❤❤❤❤❤❤
Жду не дождусь, когда они от разных моторов валы сварят. Как в поговорке, когда коту делать нечего.
На продажу пойдёт
Подгонка напильником наше фсё!
Where is the personal protective equipment? Have you ever had a splinter of metal in one of your eyes? Or has a piece of metal ever fallen on your feet?
You don’t need to worry about safety. You’d barely even lose a toe or an eye.
I cringed when I saw him brushing away those strips of metal with his hand. That's a good way to amputate a finger. Once you get a laceration from those, you won't try it again. (Fortunately, I didn't take a finger off when I did it)
Im a 38 year machinist with much laceration experience and I still find myself doing it. I learn real slow I guess.
@@martinswiney2192 do you do that thing where you start reaching you start to think "this isn't a good idea" and the... Too late...
@@michaelallen1432 nope. I just keep bandaids in stock.
I cringed when he was polishing those journals…😮
На сколько его хватит?
I have a better question: how can a crankshaft be broken?
Could be stronger using jb weld in the bore
..and 99 cigarettes..
Я не могу понять почему это сторона не богатая они нечего не выбрасывают и не покупаю новое(не думаю что коленвал долго продержаться)
машина с этим коленом заработает на сотню таких ремонтов, им так проще. И ненадо думать что такие ремонты не жизнеспособны, в ссср и не такое востанавливали.
@@alibasav Я что-то не помню что мы востонавливали коленвал ы мы их выкидывали а Вот в 90тых годах делали новарку а тут сварили из двух один в каждом коленвале есть свая болонсеровка и т д
Как думаете: какая была нагрузка, если лопнул коленвал? Не полуось, не валы или шестерни в коробке - коленвал! А может быть, он лопнул после такого вот ремонта?..
Интересно сколько он проработает 0.5 минуты 😂😂😂
Не сторонник такого ремонта,но раз они это делают,значит оно ходит какое-то время
@@user-fu8jd9og2o согласен, скорее всего в их условиях такой ремонт имеет место быть. Видео видел, как этот мастер собирал колено из двух обломков
Преклоняюсь перед этим спецом. И варит даже с такой убогой и неудобной маской и одной рукой ( что крайне сложно) по высшему разряду.
Дайте ему нормальную сварочную маску.
Коленвал стал короче? Если мастер пророчил одну половину и вставил в другую половину?
это половинки с разных коленвалов!
@@alibasav спасибо за ответ👍
Accuracy and timing for every cylinder guaranteed to 102 %. Use the glass paper to decrease the diameter.
I lived in Asia for 16 years and I’ve seen skills that simply do not exist In the west, I’ve seen many a part that is considered unserviceable in the west be repaired and last for a decade or more. Metalworkers in particular, but also repairs to motors, pumps, whatever.
6:48 разве трудно канавку стружколом сделать?????????????????
Ты еще про СОЖ у них спроси. 😂
@@nemovitdonbass9707 )))))))
Ты посмотри на них) они неграмотные)
Вот не думаю что они на столько тупы и не понимают что коленвал лопнет,но на какой-то хер варят его хотя глазом видно что биение на токарном присутствует
ยังกับมันจะใช้ได้นานนะบังๆ
Otmo trabalho
Не видел термической обработки вареной коренной шейки. Либо в этом же месте вкладыши провернёт, либо он снова лопнет.
Thank you for showing your response and and answer of your question is that Implementing heat treatment after the boiled neck incident is crucial to address potential issues. Proper heat treatment can enhance the structural integrity, minimizing the risk of the liner turning or experiencing a repeat burst. It's an essential step to ensure the long-term reliability and safety of the equipment.
You guys are all just haters.
Anybody who can run a manual lathe like that is a boss. And with half a cig in his mouth. The crank will break again no doubt. But he did have some mad operator skills. Wait.....
He did that in his pajamas and flip flops.....with an electrode bag to cover his bare feet while holding his welding shield on his knees and threw down one hell of a bead Damn
Lo que mas cabrea a los "tecnicos"es que funcione una reparacion que estaria condenada al fracaso.
No safety glasses.
Hang on ,Here is a once in a lifetime warranty claim on a Ali bongo crank shaft claim.When challenged about his claim ,Ali bongo replied it’s actually lasted 5 times it’s warranty period, Ali replied do you know the life span of a fly.
Что так можно было ?
Ap ko used spark parts ki zero-rated hai
👍👍👍
引擎準備出怪手！你死定了！
😆
آپ کی دوکان کہاں ہے
This crankshaft expert put a bag of McDonald's fries on his leg before high-tech and precision welding? For such a restoration of the engine crankshaft in the USA or the EU, you can get shot on the spot or the death penalty from the customer