Ну когда вариант выкинуть грузовик или починить поршень потому, что купить просто нельзя, любой нормальный человек купит новый грузовик на гарантии. Ну а если НАДО? Не так делать неправильно- купи грузовик. К слову когда я задолбался вытачивать новый поршень компрессора и в конечном итоге он ещё и потерялся(спустя 2 года так и не нашелся). Обварил старый который ходил без масла и приварился к цилиндру. Проточил, собрал и усе работало.
Сварка в инертной среде покинула чат...неужто такой дорогой поршень что его надо из гамна и палок лепить???тем более в соседнем ауле в песке речном новые отливают с банок из под пива...
I have actually done this on one of my Honda FL350 two stroke engines years ago. I removed the ring locator pins first by grinding out the bump on the inside of the piston that holds the locator pins in. Then punched out the locator pins. Welded up the piston. Put it in the lathe and made a special cutter the width of the ring lands. Put ring locator pins back in and weld up with the spool gun. It's still running today and it has been several years now. These 350cc two stroke engines spin 8500 rpm +.
Had something similar done on an old Suzuki t250 from the mid-60s. Busted one of the piston skirts. Had it welded back on. It worked for about 5 years, bike started running like crap tore it down and that busted skirt had come off again. The odd thing was is we couldn't find it inside the crankcase.
@Gábor Lukácsik I mean we couldn't find anything not even bits and pieces completely gone. My theory is it got busted up into little bitty bits and then blown out the exhaust.
If done properly, it will hold. But the thermal expansion is also different and you could end up having bumps in your circumference due to different materials and cristalin structure when at operating temperature. Guess you did a good job AND were lucky.
@@jeffwood8109 I also had a T 250, one day overheat and one piston had a nice hole on top of it, i just put a bolt and a screw in it and done !! When you are far from home and no parts it's a quick solution
Improvisation, making do with what you have, no frills, no fancy stuff, you have to admire the passionate energy and dedication. I'm sure that given the economic framework these methods ooze out max mileage from the cost of repair job involved, I call it ingenuity borne out of sheer need. Respect.
One flat-broke, third-world solution I've heard of is doing away with that piston entirely. With the piston and rod gone and the valves disabled, you turn the plug hole into a crankcase breather. Why not try fixing the piston if you can throw it away later?
Will last several years. You really think these guys invest all this time and effort and in expensive machinery to do a repair which only lasts one engine start? Where would they get repeat business from if every repair like this lasted only a few months?
These boys are a lot smarter than we think sometimes! Look how HOT he had to get the ‘alloy’ weld stick & pistol for it to bond. That was no low temp toffee alloy! I’ve seen these lads make there own weld sticks by actually melting the exact metals they need from other scrap. In the same way that the guy who reconditions batteries melts lead into rods. Sort of makes sense really & not a hard one to work out.
You can’t shut them up... blow hards will never admit that they were wrong. No matter what length you went to to prove it to them, they will still insist that night is day.
Exactly, i love all these keyboard warriers saying it would fail on start up etc. These guys have been doing this with success a lot longer than many of the critics on here have been alive. Everything is relevant, here in the west we have a throw away society, over there its a repair it society, who's right, who's wrong??? All that matters is if it works and lasts then whats the problem??? Plenty new stuff in the west fails very quickly.
Excellent great job, half of the negative comments only dream they could do something like that so they can feel better about themselves. Keep up the good work.
@@ivantinipollon6214 não deixa de ser um ótimo trabalho, aliás não é pra qualquer um, tem que saber o que está fazendo, e não é um torneiro de fundo de quintal.
Bruh, channel says these guys are professionals in micrometry, thermodynamics, ohms law and proceedings, the dude with the slippers was a collegiate esquire in reciprocal engine dynamics and metallurgy. The truck ran great by the way only it fell off the cliff on those tight cliff roads
It amazes me to see the skill they have to Rebuild parts. I have seen video from Cuba where they can do the same thing. Many times using modified parts from differt car manufactures. The US does not have the skills to do anything anymore. We just think parts come from other countries in shipping containers to survive.
парни вы что творите, потом на трассе разбирать, долеко не уедет!!это долго работать не будет, еще потом дороже встанет😁раз разобрали делайте как положено)))
check the videos - they melt down disk brake rotors and old flywheels and cast brand new cylinder liners too - it must work, I'll bet they've been doing it for decades
En cuestión de soldadura uds. realizan un proceso oxiacetilenica pero no hay una unión metalúrgica aquí el proceso correcto sería tig ya que habría una de metal base con el aporte y el centrado en el torno sería mejor con el indicador de carátula gracias un saludo de cd. de México Iztacalco
Haha could you imagine them running a compression test on nice this engine they s built 🤣 be surprised if they put new rings in probably weld the old ones
Remarkable to see all the nay sayers in the comments. From the way they did this, is obvious they do it quite often. If it didn't work, they wouldn't do it. I would bet money that the repair will last at the very least until the next rebuild. They run those trucks well into the millions of miles, and they're all pretty much rebuilt in the same ways. They're craftsman just like any other, and just like the rest of us, I'm sure the jobs they do work out just fine, no matter what you RU-vid experts tend to think. Who cares about what PPE they have or don't have, they don't so why should I. I've worked in many machine shops and fab shops (in fact been foreman/manager in every shop I've worked in for the past 20 years) where I didn't wear boots or glasses, no ear plugs, and 90% of the time wore shorts, t-shirts and tennis shoes. That stuff doesn't effect your skill level at all. Sure, it might save your ass in a bind, but if you stay out of situations where you'll get hurt, then you can't/won't get hurt. Love watching your videos, thanks for sharing buddy.
А новый поршень изготовить не требуется труда человека??? Там ведь процесс его изготовления вообще начинается с добычи алюминия, литья ..... Масштабы труда представил????????????
Перед навариванием аллюминия нужно предварительно хотя бы равномерно подогреть весь корпус поршня до температуры 200 - 250 С°. Потом после наваривания - закалить. И тут важно НЕ перезаколить. Скорои мы так же будем жить и работать, не отходя от своего рабочего места...
в движке после пуска закалится.... в тех краях давно работают по методу глазника Федорова - "его медтехники не знали что это чинить нельзя, поэтому чинили"...
@@ivaneremeev4048 ну да. газовой горелкой намазать алюминия, при обточке чтото отвалилось , в добавок сняли несколько соток наждаком... хотелось бы увидеть процесс востановления гильзы!!
Это же поршень, тем более дизельный, а у них точность плюс минус миллиметры при токарной обработке! Да и тупо намазать алюминия на выкрошеные перегородки поршневых колец, гениальная идея.
У нас поршни давно уже изготавливают под заказ любого размера а вот научится у них аккумуляторы перебирать это да было бы очень полезно и выгодно . Особенно грузовые акб 190-250 амперные
Use correct cooling liquid is mandatory. Oxidation and particles will cause overheating. We see the consequences here. Reparing aluminium with high silica content, no way.
Sometimes you can't get parts. You make do with what you got. And as others and myself have said elsewhere, apparently they do it enough that they can do it well. So it must work.
This shows two things. The skill, determination and necessity of these people to keep the truck running but it also shows the great inequality of our world. We would just throw away the piston if not the whole engine and buy a new one. They will spend the time stripping it down, welding, turning and repairing. In our world it would be uneconomical but for them it's probably a necessity. What does make me smile is he probably took two thou of with just the sand paper but nonetheless, well done.
I’m impressed with what these guys can do working with practically sticks and stones in their sandals, but I really do question how long some of this stuff lasts lol
not sure about the compression after that fix , but I guess its better than NO piston at all =), I guess everyone has a little bit of giggle as they get older =P
Вообще чёткий ремонт! Видно же было что мало направили металла,дак ещё и размер поршня уменьшили, это конечно прокатит если он был ремонтного размера, и гильзу поставят номинальную)))))))))
