I repaired the scrub pinion which no mechanic repairs | Give your opinion by watching the video |

[@haroldmedalen6757]

Over the years of living out in the sticks, I have made a few sketchy repairs in order to keep moving ahead instead of being dead in the water. Many of them were re-done more correctly and with proper parts a.s.a.p., others worked fine for years. A very experienced mechanic I sought advice from when I was young gave me a range of options for repair of an engine. Of the most expedient and inexpensive, he said "It's a poor way to do it, but poor people have poor ways!". I chose that way of doing it so as not to get any poorer any faster and as far as I know, that engine is still running. It's amazing to watch these guys making field expedient repairs with limited resources. My hat is off to them. Not only do they keep rolling ahead, they provide endless opportunities for the countless armchair experts who like to criticize their work.

[@eccosabanovic1589]

..he posted his video on to platform where armchair experts are, so why would you complain about it?? You dont see armchair experts sitting nearby him and lecturing him, do you?

[@stevo184]

Well, I'm not an armchair expert but I'm a gear specialist and do I criticize their work? Sure do, because it's complete crap because this shabby repair WILL FAIL

[@systembypass6930]

@@stevo184 people gotta do what they gotta do. These guys can't afford to go buy a new factory part when a machine critical part fails.ive seen sketchier repairs. That gear looked almost brand new.

[@EvoKeremidarov]

@@stevo184 wow a "gear specialist" is that a new gender or just another way to describe someone who does not appreciate people's hard work or even more important when people can make something work with the resources they have rather than their credit cards...

[@djtaylorutube]

@@stevo184 If he drives down the road and encounters a cow, he will swerve and total the truck to avoid hitting the sacred cow. He may die as a result but that's down to fate. Having an imperfect gear that works for now, until the next repair is not a problem. When I traveled through India, I marveled at the simple way people made stuff worked. In London, if food supply stopped for three days you'd have anarchy, same if the Thames flooded. In India, they'd just shrug and carry on, they're so much better able to cope. Irony eh?

[@ДенисБуерашев]

Я в шоке. Когда хочется поднять настроение, смотрю этих парней и смеюсь до слёз. Давайте, парни, жгите! :-))))

[@павел-ю1т1к]

Так же🤣👌

[@Longin_]

Что тут смешного если у людей нет другой возможности. Тем более далеко не каждый сварщик может делать такие качественные швы, без раковин и вкраплений. И скорее всего у него не инвертор, а трансформатор.

[@gazzafloss]

I see a lot of "nay sayer" first world experts here, saying this job will not work. These repairers don't have the luxury of brand new parts and perfection, they need to do that which is necessary to get a truck earning it's keep. I'm a retired fitter and machinist and in my time I've worked on plant that needed to keep going and we've had to do similar type of repairs to these. Not perfect and by the "machinist hand book" but they worked as required. So don't "rubbish" and disrespect the work this man does. It must work, otherwise he wouldn't have people coming to him to get these jobs done.

[@kenohorny5682]

fuck yea man u put that shit perfectly

[@stevenleslie8557]

I agree. If this was a terrible idea, he wouldn't do it. It may not last as long but if he can do it efficiently enough he can make it worth his time.

[@ErichHarder]

This is what happens in an less educated world. They're making money, no one should be complaining

[@Picondcg]

First world differential repairer for 12 years here. More than a 1000 diffs rebuilt in my career. Very few people in the world with my experience that’s for sure, maybe none. I can gospel about this. If it even rotates in place I say it will explode into pieces within a mile. Must be carbon rehardened. Nevermind the noise and the fact that he ruined the other good teeth at 8m20s...

[@Picondcg]

Good welding skills though! Other than that they are completely clueless about the super tight tolerances such gearings have to work with. That why they tried to “repair” it. I guess it’s just a learning experience for the shop or just a KZbin visualization trigger.

[@tomwinthrop949]

Very impressive. I Would not have known what to do. The original damage looked impossible to me to repair, yet this craftsman did it with his own hands. He has a gift. Very nicely done. Excellent !!!!!!!!!!!!

[@jimk.9493]

Agreed, good work restoring that part to get back running. Longevity, as others have said, is the issue. The part might look good, restored and polished up, but how well it meshes, in terms of the pressure points on the gear teeth is another matter. To see it installed, and Prussian blued up to show contact pattern would be nice, then the repair could be judged a bit more accurately. Regardless, hats off to these sandaled mechanical madmen! Loved him polishing the bearing mounting surface with his finger just about resting on the tool bit! Cowboys!

[@robertoruiz7069]

MY thoughts exactly.These guys do great body and frame work,but this is much more critical. While this repair may get INDIANA JONES TRUCK across the rope bridge,it most likely won't last.If he had a 5 way CNC and carbide cutters and the ability to program it correctly,then maybe.There's a reason gears like that have a polished precise surface and use high pressure lube. It is the ability of the lube to allow the parts to slide past each other while transferring the pressure of movement across ALL of the tooth SURFACE{or contact patch in the case of gearing}. But at least this allows them to make one more delivery of goods or product,so my hats off to them,never give up!!!!This channel is an inspiration to others,anything is possible.

[@mawe42]

It better than before and you got to give it to him, you cant tell which tooth got welded!! 😁

[@unkertech]

I think they know it won't last. But it's either that or paying 100 times more for a new part. Maybe they will need to fix it again another 10 times until the truck need to be totalled. That is still significant money saved. The money saved could probably feed his family for few months or even years. In terms of safety, well I guess they are willing to take the risk. I guess it's not easy to understand when you are living in totally different quality of life.

[@aaronsimpson8329]

All I've got to say is a weld is stronger than the original material. The rest of that entire tooth will have to sheer off before that weld breaks. That's just my life experience and also what they teach you in welding school

[@johnbutler3141]

You guys have been living in the first world to long. Give them credit for attempting a repair.

[@СолиДом]

Раньше думал, что самый трэш - "восстановление" полуоси сваркой без термообработки. Но нет, я ошибался..

[@ЮрийБеспалов-н8ц]

Без цементации ненадолго

[@spectre8558]

@Эни Ворондил он за кадром, эту деталь указательным пальцем вырезал))))) а тут это так чтоб не подумали про супер людей)))

[@Ereke721]

Им работу подидовает усилители рамы те которы 3-4 слоя делают)) после них всю машину придется варить начиная от колесных дисков заканчевая коленчитыхвалов 🤣🤣🤣🤣

[@НикитаДёмочкин-й3ж]

@Эни Ворондил но это пакистанцы :) впрочем, разницы нет.

[@Kk23ss]

За неделю - 5лимонов зрителей! Кмк, много кто заходит сюда - поржать чисто...

[@manuellongo4365]

Yet again hats off to the skill but one just cannot expect a gear filled with weld and finished using an angle grinder to last. Such gears are machined, hardened and then finish ground using very accurate machines. I would love to see the wear pattern after a few months. The caption says "I repaired the pinion that no mechanic repairs" well, there is a very good reason why nobody repairs them.

[@jaymoney119966]

I think the welding rod he showed is a high in nickel rod, one that’s made for “wearing in” . I used rod with high nickel content to repair a track system for an assembly line. I had to weld flush enough and not to grind because it would wear it’s self to shape. I’m wondering if he’s trying to do kind of the same thing but with this gear. That explains why he can get away with a grinder, but then again how hard is the ring gear that will either drive it or be driven by

[@projectdiy985]

Well said

[@billmiller7138]

@@jaymoney119966 He used hard surfacing rod so no.

[@Daniel_Herrero]

amigo, te cuesta entender por que no vives en el 3er mundo, si no repara el camión su familia no come, tampoco puede tener el lujo de hacer todos esos procesos caros de endurecimiento o comprar un repuesto nuevo, cosas que seguramente estas acostumbrado a tener o usar en tu vida diaria verdaderamente me gustaría verte como solucionarías el mismo problema en las condiciones en las que vive esa gente edit: gracias por el apoyo, hay gente muy coherente que se da cuenta de que el problema de fondo es que en esas situaciones mucho no se puede elegir y otros que definitivamente creen que estas reparaciones se hacen por gusto les les invito a ver mis v1d3os

[@billmiller7138]

@@Daniel_Herrero That doesn't make it a good repair, it's still a short term temporary fix. And it will require repair again and again.

[@СергейЗубченко-о1ы]

Супер работа! Страну где есть такие люди не победить!!!!!!

[@ZAETSVOLK]

Визуально похоже на полноценную шестерню, но результат работы ее будет плачевным . Сколько она отходит под нагрузкой? Думаю совсем мало чтобы считать такой ремонт целесообразным.

[@alex1505prog]

Для продажи самое то

[@alxvlx9020]

Нужно брать во внимание количество ресурсов затраченных на ремонт, а именно, пару электродов и пару часов. Работать она конечно же будет! На авто газ-52 и газ 69, первая шестерня как и задняя несинхронизированны, материал шестерни отвратительный, что приводило к быстрому износу и выбиванию передачи, именно так и ремонтировали на коленке в гараже шестерню, вот только без УШМ, слишком жирно для тех времен, обычный напильник\надфиль.

[@IgelTMB]

В общем наплавлением можно отремонтировать, но опять же выводить нужно на станке, а не болгаркой и нужна в итоге цементация или закалка, проще сделать новую, это херня на пару тысяч км

[@Konstantinfi51]

Возможно конец видео обрезан, где эту деталь в чермет выкидывают)

[@ЕвгенийЧиняков-ц8я]

@@alxvlx9020 редуктор от конвейера СР 70.05 у него вал(рыцарь) 1 в1 как на видео и не кто их не восстанавливает выкидывают сразу. А ведь можно ремонтировать пусть даже так.

[@ЭдуардКучеренко-й4е]

Я смотрю ютуб часто стал показывать такие самоделки, видать потихоньку готовит к светлому будущему

[@Сергей-н7з7г]

Это точно, если так дальше пойдёт, то и мы будем аналогичным способом ремонты производить.

[@МойХозяин-п1д]

Сварка решает всё 🤣

[@jessepinkman4863]

Ютуб, это гугл - просто коммерческая компания. Теперь они для тебя будущее диктуют?

[@ИгорьПанарин-ч1к]

Сергей Ч. Именно так ещё писят лет назад и делали. Просто это хорошо забытое старое. Какгритца, не ссы- паАаходит...))

[@ЭдуардКучеренко-й4е]

@@ИгорьПанарин-ч1к я не против пусть она ещё долго ходит, ну не у меня

[@georgegonzalez2476]

Hint: making it look good does not mean it will work good. Welding and grinding make all kinds of internal stresses and adds impurities and alloy discontinuities. It might be okay under light loads for a short time. But it’s definitely worse than the original, and remember, THAT failed. Also it’s nearly impossible to regrind it to the original spec, as the dimensions are very hard to measure. So the gear contact areas will be wildly different even if the surface is only a few thousandths off.

[@andypanda8259]

Looks like this guy been doing this repair a long time, I'm sure he's confident it works in lasting order as do his customers...

[@Tudumanu]

@@andypanda8259 Maybe the trucker will take it easy from now on to avoid cracking the part again

[@chrisbarajas6711]

Haters gunna hate

[@20alphabet]

Yeah, good enough for a KZbin video... not real world stresses.

[@importsstillsuck]

I bet they never thought of that.

[@paulorth2251]

Those who remember the shade tree mechanics of the past can appreciate the work these men do to keep their trucks moving and earning money. Kudos to the worker. 😁👍🇺🇸

[@Halibrand]

I welded my pinion gear just like this on an 700cc 4x4 Atv 7 years ago, new or used parts were not available so it was worth a try, after i welded the gear i ground the gears and put it together and used marking lube to make sure the tolerances came close to acceptable before i put it all together. The repair still works like the part was brand new, ive put 20.000km on it and most of that is by plowing snow so it has been under load alot. Makes no noise and havnt contaminated the engine oil.

[@JohnDoe-es5xh]

Did you re-harden it after welding and grinding?

[@Halibrand]

@@JohnDoe-es5xh No i did not, I was ofc thinking about re hardening it but it was an experiment and i kinda wanted to see if it would last or not ;) Since then ive also welded on more material on the teeth of dog rings in a atv gearbox, it was slipping out of gear as the teeth was rounded off on the corners and that repair is also holding up fine ;)

[@JohnDoe-es5xh]

@@Halibrand Thank you for the reply. May your teeth make it to the very end of your trucks/cars. 😁 Cheers from Germany.

[@timjohnson1199]

@@JohnDoe-es5xh That pinion was surface hardened. Pretty difficult to do that in the field.

[@thomashaley5284]

You are one lucky man!

[@Chipollino77]

Не, всё фигня! Работать не будет, т. к. электрод не погнул! 😜🤘🏻😎🤟🏻

[@aleckaleck2492]

Все верно, гнутый электрод обладает свойствами адамантия.

[@АлександрКулагин-э1ф]

Сложный профиль зуба сформировали УШМ,какая твёрдость после наплавки,никто не знает.Зато быстро.Потом где нибудь на горной трассе Пакистана всё это развалится.

[@johnsharky1345]

У нас в инструментальном наплавляли с твёрдостью 55... 60HRC, но полагаю это не тот случай

[@АлександрКулагин-э1ф]

@@johnsharky1345 Больше 50 HRC уже жопа(

[@igorbogordetski2319]

тут вопрос такой, а с какого фига произошла выкрошка на шестерне ? Заводской брак литья ? Может быть... так чтА не боги горшки обжигают. Эти ребята тоже ведь не первый такой ремонт делают, а мастерская у дороги может уже лет 40-50 работает, может они даже танки чинили при ИндоПакистанском инциденте.

[@qweewq358]

И ещё ведомую шестерню загубят заодно.

[@igorbogordetski2319]

@@qweewq358 да там все уже изношено, это не так страшно, главное гипоид не забыть, но скульптор хорошо потрудился, с моторикой движений у него более чем хорошо. И вряд ли многие из нас так умеют воять болгаркой.

[@erronellington8800]

It is a good repair to get you out of a bind but it will not last. In my early years as a mechanic living in Jamaica, I had this done at a machine shop called Ramdial Engineering in Kingston. Those guys requested the crown and pinion to be present for the repair. It was done to the pinion gear in a chevrolet D20 diff and lasted about 4 months then we had to do it again. The second time we did the crown and pinion which lasted another 4 months. The parts had to come from America and were very expensive at the time and took about 4 months to come into the island. The repairs really bought us some time. I highy recommend this repair but keep in mind it is only temporary.

[@nevinkuser9892]

That's an amazing story. If it worked until your part arrived then it worked! As someone living in Indonesia for the last ten years I know how long it takes for parts to arrive from America! It's right when you say I guess it got lost that it shows up 😂

[@gengiscu]

this is called heat treatment

[@conqueringlion420]

So you were the Babylon repair mon who left us with your repairs here in k12

[@jayminor9757]

You do what you have to do with what you have available. There is no telling how long the repair will last but that’s not the point. Get her going is. Awesome job!

[@36rusvoronezh]

Конечно не важно, если хитрый индус сразу продаст этот редуктор вместе с машиной.

[@EpsonHX4]

@@36rusvoronezh гловное показать, что все пальцы целые. Даже по видео видно, что грани на гипоидной шестерёнке пошли погулять)))

[@genuinegasti]

Well...allow me to disagree...is that filling material chips of or gets loose, it can certainly end up destroying the rest of the gearbox

[@alberto1512]

You could solve the problem, 1 day or 1 year. Have to change both parts, the pinion shaft and the gear to. And check the contact pattern and do the proper adjustments. That's the life of a gearbox

[@SilverSergeant]

Actually, longevity IS the point.......this is a useless repair.

[@vincentcarter1538]

I am a Machinist, 30 years now I am currently working for a company that manufacturers the biggest pumps and compressors in the world. We make our own gears and shafts on site. They are machined, heat treated, and ground to finish dimensions. We have on occasion welded up and re-machined some parts but not gears or splines that have been heat treated. With all due respect, this guy's work looks good for what he has to work with But I don't think it would make it through QC

[@Buddy-po4hv]

Very well said.

[@cesarcarofelix4096]

What’s qc🤔

[@marcgovenor8136]

@@Buddy-po4hv quality control

[@xaytana]

Wouldn't be surprised if this part doesn't last all that long. I also thought the title was a bit moronic, of course a _mechanic_ wouldn't do a machinist's job, the most a mechanic would do is replace the part, and an actual machinist would properly make the part. Not to mention pinions and ring gears are fairly easy to get, it's not like this is some hard to find part that requires a one-off machining job. I honestly wouldn't even be surprised if this is a random piece of scrap used for the sole purpose of making content, like all of those low-quality 'DIY project' channels that make nothing of practical use with random objects they find lying around. Also the reply about me being so well versed about spare part availability in poorer areas of the world is hilarious. People quite obviously don't understand how easy it is to salvage parts off of another inoperable vehicle, especially when the part in question is as abundant as a differential. If it doesn't fit, adapt it; doing this would be a better job, a faster job, a cheaper job, and a safer job than what this video shows. Cuba's car culture, which is a very well documented situation of lack of available new parts, can teach you a thing or two about this. Some of you actual idiots should go educate yourselves, though I wouldn't expect much from people that lack common sense.

[@jessekoch3480]

As an engineer I agreed with you. From my observations like your there were many steps missing but I think I would have turned s new gear.

[@mark-1234]

There's a really good reason why people who understand the nature of these parts don't attempt to repair them. This "repair" is useless as it will eventually ruin both the ring gear and this pinion because there's no way he can equal the accuracy of the CNC that cut this. Not only that but for whatever reason he ground on *all* the teeth, basically ruining the accuracy of all of it. It'll probably last a little while but it'll be noisy as hell (which they probably don't care about) and will fill the entire differential with metal shavings as it grinds itself down, thereby ruining all the bearings along with it. With the loads they put on these trucks, I don't give it long. These guys are pretty handy with what they have to work with but, again, this is not a repair.

[@harryfp1494]

Just about to say this his weld rod will never meet the hardness of this either so it’s useless

[@deztructo123]

If he thinks he repaired it, then he has zero understanding of metallurgy either. Dunno if thats an economical repair where they are from tho... hope it is.

[@mark-1234]

@@harryfp1494 - I was going to give him the benefit of doubt on that part cuz I'm not up on all the welding rod specs. All I ever work with is 6013 and 6011.

[@juacartav3363]

I want to believe this is a temporary repair to get the truck and cargo to its destination and later taken to a proper shop for the right parts to be installed by a qualified technician.

[@justingeturgun]

when the parts dont exist or to expensive theres always a way

[@gerometorribio2127]

The welder/grinder/machinist really earned his pay on this job. I would have said, “Forget it-order a new part.” But as supply chain issues in the West make parts harder to come by, shops like this can help us all re-learn the ways of the “old time” mechanics. I would like to see a note under description about how the repair part worked out in service. By the way, the video is quite well produced: good lighting, clear close up shots, details of each tool or welding rod he used, and nicely sped up and edited to shorten the repetitive work.

[@TheNorthsquad]

That repair isn't going to last at all, you can't weld and grind a helical gear cut, not if you want it to last more than 30 days. Where are the videos showing these repairs operating over time in the industry?

[@macdub42]

supply chains in the west... you probably didnt know a majority of gear sets worth their money are made in italy. USA can't make a geat set within an acceptable tolerance of backlash and round out. and chinas steel is worthless.

[@sromarsincerotragicotragic6828]

​@@TheNorthsquad justamente são têmpera diferente assim forjado e solda não dão certo

[@123mijas]

U can clearly see the slag cooling in the middle of the weld which is impossible to get out and then get a good weld it's just junk and would never stand up to inspection

[@hannes7348]

@@TheNorthsquad I'm not quite sure. We have forgotten to repair things in our world. We are only replacing. I'm a machinist also, but maybe this repair lasts longer than we guess.

[@altpotus6913]

I'm impressed. I had a DeSoto with a spun bearing, welded to the crankshaft. Pulled off the bearing, filed journal with a hand file, smoothed with Emery cloth. Installed new bearing, was still running years later.

[@jdbrepair]

I’ve heard story like this before. People get lucky now and again. Mostly because everything is so wore out and gets so little use they can claim “fixed”. If it really worked that easy, crank shops wouldn’t exist.

[@MichaelSmith-nd4rr]

Hello, the three parts you speak of are made from materials that can't do what you speak of, as for the file

[@curtisbacon7856]

@@jdbrepair so many people with so few brain cells and you're one of them

[@curtisbacon7856]

@@MichaelSmith-nd4rr oh somebody else with no brains whatsoever you would be surprised what they used to do in the old days all by hand simply because the Machinery did not exist how the hell do you think you even drive a car because somebody worked their ass off to build it by hand I've been a mechanic for almost 50 years and you my friend are an ignorant Sapp

[@laszlofiliszar4099]

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[@richardsedenquist3222]

I researched the rods they were using...made by Nihonweld....they recomend a 1 to 3 pass over lay with NHF-300 or NHF-350B which is a soft matrix rod...for the final passes they used NHF-650B which is a hard Martinsitic facing rod....i would preheat...weld....post heat and either wrap in ceramic wool or build a hardwood fire and smother the pinion with hot coals and ash till cool to the touch...then profile the tooth using a hard wax or clay fired template of the ring gear teeth that the pinion mates to....for final fit up the pinion would have to be mounted into the carrier and mated to the ring gear using red lead or hi spot bluing to work down the hi spots....tooth engagement and pattern are of the utmost importance...it would be time consuming but a positive outcome could be had if done correctly!!...i would use the Tig process but you fellas have to use whats on hand...my hats off to you and thank you for sharing....keep the good videos coming!!!

[@hanisalman917]

Hi Guys 🙂 feel free to support me on my DIY new channel don't miss the new Videos kzbin.info/door/sHr7PCD2hcI73Y4Sb8OzDQ

[@jackdecker8100]

This is why no mechanic repairs these. For as much work as they are doing only to have a finished part that has questionable strength wouldn't it have been just as easy to get a new part? Or if you were concerned the new part would just be the same quality as the old part fabricating a new part from better stock would probably be just as easy.

[@richardsedenquist3222]

@@jackdecker8100 i repair equipment that is early to mid 70's...TD7 international dozers come to mind...you go to a dealer and find out "parts no longer available"....Obsolete...then what?? We make the parts....the people were going Nuts when scrap metal prices were high...the tractor bone yards were lacking parts because people were scrapping them for money....and its not going to get better either....repair and fabricating shops are busy and a lot of the stuff we are doing is exactly what these gentlemen are doing....i call it "MAKING PORK OUTA PIG SHIT"....some of their methods are crude but they work....we should all pay attention and support these guys....because we are headed in the same direction because PARTS ARE NO LONGER AVAILABLE!!

[@jakodzun]

What filler rod would you use for TIG hardfacing? NIHONWELD 650 consists of Mn-1.35%, Cr-4.12%, Mo-7.7%, V-1.9%(!), W-2.2(!). I have not found filler rods with a similar composition.

[@richardsedenquist3222]

@@jakodzun pound off the flux and sand the electrode wire clean....wipe them down with Acetone and use the tig torch with pure argon gas

[@fredrikthorin6217]

The broken piece was estethically repaired, then the rest of the nondamaged areas was for sure destroyed by the grinding all over.

[@willythemailman3911]

Chew them all up the same, then say "look, you can't even tell which one was broke"

[@guypatts494]

Great work they get it done that's what counts

[@fredrikthorin6217]

Arm chair quarterback with zero competence of transmissions I see

[@MaddogJones]

Not to mention he destroyed the temper of the rest of the gear teeth, sure it looks good but it won't last a week. Not only will the repair fail but the surrounding teeth with get destroyed as well.

[@clayton203]

@@MaddogJones that’s exactly what I see

[@ВладимирПутин-ш4щ7ю]

В 90е мой дед выполнял аналогичную работу у нас в деревне. Денег у трактористов не было на покупку новых деталей, ко всему ещё и дефицит запчастей. Сварку проводил полуавтоматом. И трактора, тягачи по три, четыре года выполняли свою работу без передышки. Так что уверен, что деталь которую нам показал мастер прослужит на совесть👍

[@MrCarnutbill67]

I watched a guy do this with a tig welder on the ring gear of a 3,000 HP Super Street car. Outside, in the rain, covered with a tarp. It was a temporary repair that got the job done and allowed the team to run the rest of the weekend. Wealth and resourcefulness aren’t mutually exclusive.

[@trexmidnite]

Those benchod caught cheating bigtime by wleding up gears..

[@MrCarnutbill67]

@@trexmidnite Say what?

[@longsleevethong1457]

We use to grind ours down for weight reduction.

[@jusplay7309]

@@trexmidnite that the only urdu you know? Racist much?

[@kiberhim1]

Да уж... действительно, удивительные технологии... Как им только руки не оторвали до сих пор.

[@TehButterflyEffect]

I agree. Total lack of safety. He's got a lot of scars on his hands to prove it.

[@kiberhim1]

@@TehButterflyEffect The biggest one is the lack of a brain

[@peteraugust5295]

A great way to ensure that you have another pinion to repair in two month time ;) There is tolerance classes 00 to 5, then there is nothing for about 2.3 lightyears and then there is the tolerance class "Indian with an angle grinder". That one is generally measured in dioptres since it is depending on whom is looking at the part and how good his eyes are....

[@Shmayzer]

Precise instrument - eyemeter, very precise device - fingermeter, super precise device - nailmeter)))

[@Adrian-Ionut]

Yes, you are probably right but at least they still repair what's broken instead of paying low quality and overpriced labour so a "professional mechanic" with no experience whatsoever can just replace everything

[@bestmoment9819]

kzbin.info/www/bejne/anTCf513fL2Umc0 🤣🤣❤❤❤

[@gustavoanuch890]

Some times you dont have the replacement and you need to try, i am from Chile and im restoring an 1954 international, it had the same problem on the diff and i made the same, its working fine, i dont know how much will it last, but it works!

[@rocanroller85]

you are a parts changer righ?

[@zstidsen]

Necessity is the mother of invention. Amazing outcome by the skilled craftsman. Should it be replaced? Yes. Is that an option in certain areas? No. This is where skilled professionals cut their teeth... Good on you.

[@leejohnson9338]

You do what you gotta do with what you're given. RESPECT!

[@-Andrey]

Вот это ремонт. Зря что не холодной сваркой зуб вылепили.

[@igorbogordetski2319]

у меня друган жвачку использует в таких случаях, зачастую работает.

[@ВладимирТышкевич-ф3о]

🤣🤣🤣🤣🤣 прям до слез

[@starykov]

на холодной сварке она вообще работала вечно - видимо до них такие технологии еще недошли

[@ВладимирТышкевич-ф3о]

@@starykov писаю кипятком, вот это поворот!!!!!🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣

[@igorbogordetski2319]

@@starykov ну да, абсолютно, особенно если вместо гипоида запихать

[@howder1951]

I knew a fellow who did this in his garage, he would have the steel analyzed and purchase rods as close to the alloy as possible, build it up , grind and file to look good and temper or quench as required. He was good enough to get repeat customers and the small operation made for low overhead costs. This is what you do if wait times and huge costs prevent you from doing it right immediately.

[@tonyhammer3588]

So, do it the unsafe hack way instead of doing it right. Got it.

[@randallsmerna384]

@@tonyhammer3588 Yeah, when there's no other options, yes.

[@sekou3758]

@@tonyhammer3588 🤡

[@CoolDoodle]

These videos are from Pakistan. As we all know, transportation is major contributor to economy for any nation. But these machines mechanical parts cost is high as 1. Earning of a common truck driver is very low as compared to other foreign country. 2.Pakistan is also in there worst economy crisis. I'm not saying its machine perfectly made, but the true is that they also had to make use of either restored/machine repaired to cut down the expenses burden. However we must a good cool like for his👍 skills

[@crazylarryjr]

If the guy in the vid did the proper hardening or Annealing, like you talk about, i'd feel better about the repair, but since they did not show any of that, I have to assume they didn't. They better not drop it, I bet it breaks like a champagne glass

[@kevins5833]

Unbelievable! All this being done by hand, in the the dirt no doubt. This shop is able to do amazing things. My hats off to them..

[@patrickhaarhues2870]

It may not be ideal or last long but given the tools, limited parts, money etc that was impressive. Hope it works.

[@MrTheHillfolk]

It's worth a try instead of just sitting around doing nothing waiting for a new part. Maybe/hopefully it'll last long enough to get whatever job done ,or lucky it'll last till the new one shows up. If it gets ya out of the woods and doesn't hurt anything else ,go for it.

[@noxlupi1]

@@MrTheHillfolk you may end up breaking even more components. So no, it isn't always worth it. In this case though, I rhink it is alright, they do what they can, to keep the truck alive, it looks to not have long anyways.

[@Vortexy2005]

@Morgus Schmorgus ok

[@markgigiel2722]

It's a very hard high quality alloy welding rod he used. It may work just fine for quite a while depending on the abuse. Look up NHF-650B welding rod. It probably could have used some heat treating after all that welding and grinding though.

[@tonyhammer3588]

@@markgigiel2722 I bet you dont anything about real welding. First, it’s changing the temper of the steel. Second, this hack wasn’t cleaning the welds thoroughly and just welded right on top of a contaminated weld which will have porosity in the weld resulting in a weak point and breaking.

[@VochoTalacha]

USA mechanic: let me put on my spacesuit to replace a blown fuse Pakistani mechanic: ain't nobody got time fo' that

[@alexblackburn627]

Pakistani mechanic: doc help, I think I have cancer. Pakistani doc: (picks up shovel)

[@wannabecarguy]

@@alexblackburn627 ouch

[@larslarsman]

A bunch of spacesuit mechanics commenting below. Ha. None of them looked up the electrode he was using. I did.

[@MichaelSmith-nd4rr]

Your ignorance is awesome

[@moneym9341]

You see them walking around with a cutting grinder disk stuck to hes forehead

[@Painterrap]

I think the machinists in this video did all he could given his access to parts and materials. I absolutely admire his willingness to attempt such a precise repair. The quality of the part repair has some limiting factors for which the machinists cannot control, so he did the best he could given the circumstances. Do you all really think the machinists doesn’t realize that his fix is likely less than ideal?? He is doing the best he can!

[@ketelin4285]

@Der Traubengott Depends on how it's abused , even the original failed . If pampered it can last forever. Imagine it's for driving the truck empty and with care to a place where they can properly fix it , because I second though the opinion on fitting a SH original part instead of this . Also i suspect in these places a new imported original part can cost as much as the whole truck ...

[@thedevilsworkshop7720]

I'm just always pleased to see him wearing his safety boots. Safety first people .

[@ОлегШиршиков-ж2м]

Это ппц, господа .. мало того что марковка уже покрылась раковинами и верхний слой цементации начал разрушаться , так еще и сколотый зуб наваривать .. ни закалки , ни точной подгонки , да и металлы полюбому разные .. вообщем гарантия до ворот

[@ДмитрийКузнецов-е7у]

Точно я в шоке штангель раздолбаный мог линейкой померить

[@sergeyivanov4791]

А как вам выведение угла зуба шестерни на глаз и ушм от руки?)))

[@ДмитрийКузнецов-е7у]

Что вы, гипойдная передача все проглотит 😀

[@АлексейБобров-т6о]

Как хорошо жить когда в мелоообратке критерием качества детали является блеск. Паста гои сделает этих мастеров богами своей профессии.

[@Alex_N_Nov]

@@ДмитрийКузнецов-е7у 😂😂😂👍

[@whathasxgottodowithit3919.]

Sometimes you just have to get the job done using whatever materials, and facilities are available, and if parts are not available, then you have nothing to lose. Good job that Man.

[@timjohnson1199]

Might as well try.

[@dcw56]

@@timjohnson1199 Yep, might as well. He's in a place where this part is probably just plain not available. I do wonder about his choice of a hard-facing rod to replace material. The welder in me wants to know about that. The 30+ years as a machinist, (not a CNC button pusher!) I would like to see the mating surfaces after six months use. Maybe I'd be surprised. The guy has a pretty good eye for finish. Respect from a USA metalworker.

[@divineantiwokewarrior]

@@dcw56 nope its simply very expensive for them and he does this job because also a bad part that is not made from the factory there is worth reusing, because the repair there is not very expensive

[@dcw56]

@@divineantiwokewarrior They can get the parts, but the new parts are too expensive then? I can understand that, but how many times will that part need to be repaired because of imprecise mating surfaces before a new part would be more economical in the long run. That repaired gear will also cause the mating gear to wear out. I am NOT criticizing the man who did the work. He's a good workman and has little in the way of tooling for a better fix. He did a good job for only having a welder and a grinder!

[@flhusa1]

If you have more time than money you have nothing to lose if it didn't work before you started.

[@ДаниилЗяблин-р3э]

Не ну видели, у него штангенциркуль появился, я в шоке. Теперь ракетные комплексы ремонтировать начнут😱😱😱

[@javierrivero1299]

Jjjjjj....tu vistes un calibrador ,, Dime si ves una llave dinamométrica en estos vídeos montando motores ? Saludos desde islas Canarias

[@shlossu6825]

@@javierrivero1299 динамометрический ключ для двигателя имхо не главное - главное справочные данные - допуски и посадки... Хрен ли толку ремонтировать если двигатель потом пару тыщ пройдет....

🤣🤣🤣🤣

[@alaththar819]

@@javierrivero1299 their hands are calibrated I guess. No need for torq wrench. 🤣

[@сергейниколаев-я9щ]

@@shlossu6825 Если на колесо для водяной мельницы ,то ещё походит ,а для гипоидной шестерни такой вал (!!!)) Они знают про термообработку ,цементацию и прочие "бредни " изготовителей шестерён ...наварил ,болгарка и всё ..коленвалы варят ..

[@ASMRshoeshineFaustoArizmendi]

With the limited tools they Made a great job

[@1BigDaDo]

Fuck ya he did

[@KittieDammer]

@@1BigDaDo после такого ремонта всё остальное сломается.

[@florin604]

no

[@Боря50]

@@KittieDammer все причешется.а вот так не сможешь.

[@hukatus]

This is not a repair, this is a joke.

[@alexeyalyakrinskiy]

Но зачем зачищать остальные зубья ? Только размеры уменьшать. Но за то клиенту не так будет в глаза бросаться место работы.

[@microdesigns2000]

In America, a worker would clean all the teeth as an act of quality. Do unto others as you would have them do unto you. God knows all the teeth are clean.

[@mcustom1991]

действительно, добавили люфта.

[@ktamen]

@@microdesigns2000 In this case, cleaning is deadly for the remaining teeth and they are brushed with an angle grinder only to look like the repaired tooth. The shape of the teeth must be extremely precise and the slightest touch with an angle grinder means scrapping the whole detail. I have not been to America, but I am sure that there, as in all normal countries, workers observe technological discipline and do only what they are instructed to do. В този случай чистенето е убийствено за осталите зъби и се надират с ъглошлайфа само за да заприличат на ремонтирания зъб. Формата на зъбите е трябва да е изключително точна и най-лекото докосване с ъглошлайф означва бракуване на целия детайл. Не съм бил в Америка, но съм сигурен, че и там както във всички нормални страни, работниците спазват технологична дисциплина и правят само това за което са инструктирани да правят.

[@microdesigns2000]

@@ktamen Yes I agree with you. Grinding on a good gear tooth is a very bad idea. The new gear tooth will probably make weird noises, or a clicking sound. Maybe grinding all the teeth will make all make the same weird noises. I find it hard to believe that this repair will last 100km. What do you think? Greetings from America! 🇺🇸

[@catmasikmur]

Что-бы новый зуб не отличался от старых и это успокоило заказчика.

[@justinyoungstown]

Impressive skills. As a fellow mechanic i would do something like this in a pinch. Like watching you guys videos.

[@Pavel_Tomson]

Они любую железку могут сваркой отремонтировать и сделать заново эвольвенту зуба шестерни обычным шлифовальным диском от УШМ без соблюдения ТБ. Нано Технологии ипать.

[@dennilabazanov5773]

Сделать сделают на пару километров

[@МойХозяин-п1д]

👍

[@sergeybelikov4139]

Ну..... хоть не из камня😂😂😂

[@ilyass2777]

Пройдёт ещё 200 лет, и они так же возле дороги, на этих же станках, в пыли, будут ремонтировать космические пепелацы..

[@МойХозяин-п1д]

@@ilyass2777 100 пудов 👍

[@abrenos3744]

Every time I watch one of these Craftsman do one of these things it looks so easy. All he really did was fill in the crack with some stick welding then grind it down to the proper shape and clean the whole thing up

[@андреймусатов-г6и]

Все отлетит, деталь на выброс. Только замена! Неужели они не понимают что прочность сварки не совпадает с прочность детали?

[@Peter-od7op]

I am amazed they repaired it that well. I almost fell over when they showed up calipers

[@stevehodgkins8801]

Yes, you can make it look like new - but you cannot make is good as new. Huge difference. Considering the load that the gear handles, the welded metal is not as strong as the parent metal and will fail again. Much sooner than the original part failed. This gear went through a hardening process. What you did is just create a weak and brittle point in the gear. You have a solid grasp of the mechanics, but miss when it comes to the science of it all. Starting and stopping so much without clearing the slag will allow for inclusions. A wire wheel on a grinder would be of significant benefit for you while doing these welds. It would help with the inclusions. And watch out for porosity..... However, still. Sometimes you just have to go forward. This would fail everything in the US, but where you are, it works - for however long.

[@markomiettinen4106]

And all welding was done with hardsurface electrode. So now that wormgear will eat opposite part away. But still have to take my hat of for work what this guy did.

[@tylerhensley2312]

100% agree. There is definitely way more going on with that type of gear than just putting a "tooth" back onto it. That thing will tear everything up then fail itself.

[@santobrocato8012]

Wrong metals will cause the parts to break again. Just explode.

[@ex-soldier4341]

@@predator-5000ru the hell did you write huh?

[@mjd9813]

@@predator-5000ru lmao 🤣🤣🤣🤣

[@MarekVacek]

Non-engineers in comments: How skilled this worker is. People in these parts of the world trully repair. We westerners just throw everything away. Engineers in comments: Is this a sculpture? An artistic homage to the original part? I don't understand what they can use this for.

[@SilverSergeant]

LOL!!!!!! This "repair" is a bandaid at best......

[@Nog311]

No we Westerners would repair it properly

[@MidwestBenji]

Literally all I was thinking the whole time was “this is temporary right?”

[@VenturiLife]

@@Nog311 By buying a new one from Pakistan :)

[@VenturiLife]

@@MidwestBenji Right??

[@peterwilliams8122]

Amazing. Proper mechanics , well done to them all.

[@tigre3657]

We do that. In an emergency with E7018 as base and a hardneds electrode for finish, the results were excellent, it works for more than six months.

[@pauladams833]

Thank you, that was going to be my question.

[@trexmidnite]

Benchod caught in the act.. video proof of this foolish repair..

[@peterando558]

E7018 is not the right electrode for doing repair in gears or pinions..they have specific rod for that kind of steel

[@АлексейЛаврентьев-ч2п]

There is a reason why it's called precision spiral bevel pinion gear. It's not something that can be repaired with a stick welder and angle grinder. Here are the reasons why "the scrub pinion which no mechanic repairs" and how you can at least try: 1. Prep work. None has been done. Part came from the truck and it's impregnated with oil. It needs to be burned off or cavities will form in the weld. Also you need to remove some of the remaining material to cut out micro cracks. The best way was to gauge out or grind out some metal. 2. Hardness. The part was not aneiled before work and hardened after. The boundary between weld and the part will easily open up when load is applied. 3. Prescision. Bevel spiral was restored by eye. No templates were made or not shown. Wandering contact point between two gears will create high impulse forces and will start damaging the main pinion and bearings. At the very least some ink could have been used to try to mesh this spiral pinion with the main one by grinding and scraping. 4. LOAD. It's very highly loaded part. Those are forged before machinig and that's why they splinter. Under high load the welded material will start to "flow" closing the gap between teeth. So in the end we have a "new" shiny part which is only good enough for the dumpster or to get to a local service where it can be replaced with a proper one. Even a highly worn one is better then this. No one in their right mind should attempt to drive a loaded truck with that inside. But what do i know, this comment will get less likes than "Good job", "This is what they have to do to get by" and "They need to feed family. Shit repairs like this can kill people. But where this work is done nobody cares and people are just renewable resource.

[@ccboss490]

It's not perfect. But it will work.

[@ccboss490]

It's not perfect but it will work.

[@paulriggers1558]

very unlikely 1 axle drive failure will kill anyone. if the truckdriver does not get back to work his whole family will die, - of starvation most of these trucks have 2 axles, so its only taking half the load, and might last long enough to obtain a replacement part for a permanent repair english is not their first language, [we all know that] so why pick on them, are you a racist? just because you are a clever person does not mean you are a nice person....

[@benchikhmounis4423]

@@ccboss490 with cross fingers

[@asimasim274]

You are absolutely right

[@olivertaylor8788]

We did this at radford stone years ago..welded many old gears back up..made parts for crushers,..worked for us then.

[@waynemcl]

Interesting. It worked, but for how long?

[@olivertaylor8788]

@@waynemcl Outlasted the buiness,and went to the scrap when plant was torn down

[@danneumann3274]

did you weld heat treated helical gears like this? The smaller the tooth count the more is asked of each gear load wise.

[@honestspirit56]

I welded a gear tooth on my old roller back in 1989. It’s still rolling steel today.

[@danneumann3274]

@@honestspirit56 well then, you can't argue with success

[@Fer-ty3ch]

There is no much to said .. only respect to this machinist .. well done man .

[@ПлатонФилин]

Понятно, что подобные реставрации они делают не от хорошей жизни! Вся техника очень старая, судя по типам подвески тормозов, двигателей, 50х годов производства, автомобили в Пакистане сравним с божество, они переходят по наследству как дома, посмотрите как они их украшают и раскрашивают... У страны не простые отношения со всем миром, без конечные санкции и тд, все новые детали они производят внутри страны, и стоит только позавидовать их мастерству и оптимизм!

[@aleckaleck2492]

Пакистан не под санкциями. Просто денех у них мало.

[@ukhozi1641]

Great 'old school' skills, what I was taught back on the 60s before the 'fitters' came with their ' thow it away and f it new' policy. We were taught on the sinking submarine basis, if you were in a sinking sib' you would soon find a way to fix 'anything'.

[@MichaelSmith-nd4rr]

Your so full of shirt, back to your keyboard biggot

[@ГлебРезвухин-о3к]

Комменты на англ: фантастическая работа! На русском: рассыпется через 100км) Что-то знаем видимо)

[@buriy26]

Ещё советское образование)) лет через 5-10 и русские комменты будут хвалебные)

[@AlexNSK1]

@@buriy26 да советское образование это днище

[@buriy26]

@@AlexNSK1ясен куй,но остальные образования ещё хуже))

[@swamisamarthchari932]

Very nice and clear job work. Daily earning truck owner helps lots instead of buying new pinion part. Even dumpers pinion teeth repaired same way.... God bless you turner brother namaste 🙏 love from India 🇮🇳

[@yettsoman4364]

I'm impressed with your resourcefulness and skill, well done...however, if the repair lasts more than couple of weeks, I'll be surprised. I hope it does though, good luck 🙂

[@smay4045]

If we buy new one it will cost more then that.. 6 month

[@clarkkent4075]

You have to take several factors into account to put this into perspective. It’s being done in a populous and poor country. Labour there is very very cheap and plentiful. A lot of the owners of these vehicles can only just about afford to own them. They do not have funds to pay for expensive parts and labour/maintenance costs. Also they cannot afford to be without it for several days/weeks. This type of work is not done in days but in hours and usually the vehicle is running and back to work the same day. Their neighbour China provides them with cheap materials and it just make sense for them to do repairs this way. Yes it’s more Cost effective in the long run to do it properly but they survive on extremely low daily pay. That cheap labour and pricing also applies to them. How are they going to pay for something that would take them many months to earn? Granted it’s not what we would regard as a real fix but they have been doing it this way for decades and it seems to work for them.

[@roberthayes5037]

That is completely amazing. In a place where spares are not so abundant, a fix like that goes a long way. Great job 👏👏👏

[@Platinum1812]

@Der Traubengott I believe you are correct, the original gear was heat treated at the factory to get the right mix of hardness and toughness and the welding will have removed that for some area around the repair, as well as the repair itself not being heat treated.

[@billp3914]

@Der Traubengott With the exception there they don’t drive 40-50 mph all the time mostly it’s 20-35 and heavy but short trips they are way more careful then US drivers or any other country With that being said He was careful to not overheat when welding It should last a whole My question is What’s the Ring gear look like after the break

[@whogivemethishand]

@Mike Raffphone maybe they heat treated it after, they are good at what they do. They were under the empirical law at one time. Hog wash I say.

[@Bahtiyev.Alexandr]

Это не ремонт. Этот вал сожрёт исправную шестерню.

[@almurali61]

Brilliant, well talented. In today's world these skilled workers won't get recognition.

[@2010Evropa]

Не знаю не знаю будет ли держатся приваренный шлак если настоящий зуб сломался !!😮🤷‍♂️

[@avatarevgeniy]

Вот и я думаю что это шляпная сверкающая бутафория

[@СергейЗолотов-и8т]

Тоже охренел сам наваривал хвоставик зуб всё выпало в первый час работы наверное у него другое электричество😂😂🤣🤣🤣🤣🤣🤣

[@masterwish5788]

@@СергейЗолотов-и8т у него спец електроды в коробочке синей и в бумаге замотаны)

[@Болгарин-т5р]

Эти электроды из отломанных остатков зубьев отлиты, поэтому с поломанными всеми молекулами срастутся, как с родными.

[@XsanDens]

Елсли бьі он даже держался. Важен профиль зуба. Єтот сделан 'по мотивам'.

[@ВладиславДанилов-р4ч]

Теперь понятно кто делает запчасти на наш автопром!) А так норм, если пенопласт возить по территории завода!)))

[@ВладимирТышкевич-ф3о]

🤣🤣🤣🤣про пенопласт прям до слез, главна в повороте не дрифтануть!!!😂😂😂😂

[@ИгорьПанарин-ч1к]

Владимир Тышкевич Дрифтить пох, а вот с блокировкой уже опасно.

[@ВладимирТышкевич-ф3о]

@@ИгорьПанарин-ч1к прям в точку!!!😂😂😂😂😂😂

[@kiloton1920]

I like that Vice machine he made with the steering wheel.

[@BSM_TECH_TOOLS_DIY]

I really like the DIVIDING HEAD... brilliant mechanical idea..... Perfect work... 👌👍

[@ВасилийАлександровичь-с2ц]

На пару тысячь километров может и хватит но в принципе гарантия до дверей сервиса. А потом когда эта железка убьёт ответную шестирню мастер снова проявит чудеса изобретательности , и так по кругу. Так и живут .

[@СергейХохлов-ы5з]

Интересно а как у них ядерное оружие делают, так же?

[@СергейС-в6ь]

При всем уважении к работе сомневаюсь, что болгаркой можно задать геометрические параметры шестерни. А так то красиво вышло.

[@АлександрСимбирев-х6р]

Это же вроде первичный вал коробки передач. Там ещё по хорошему цементация должна быть. Сколько интересно проходит.

[@iliamitkov8031]

Отвалится сварка и будет еще хуже.... Помогло бы напыление....

[@ЭльманИсханов]

Это вал редуктора гипоидного.

[@АнатолийВеденкин-з7й]

Молодцы ребята, скоро русские к ним повалят на стажировку, чтобы потом также подшаманивать!

[@ЭльманИсханов]

@@АнатолийВеденкин-з7й времена СССР напомнило

[@wilsondonizeth1654]

Acho incrível como esses caras com pequenas oficinas conseguem fazer serviços melhores que grandes aqui no Brasil..

[@nhaxeanhthanh3945]

Thật Ra làm như vậy chỉ hại người chủ xe thôi . một quả dứa ít tiền hơn công tháo gỡ cái cầu xe.phá hại có đạo đức

[@sromarsincerotragicotragic6828]

pô amigão noeu caminhão jamais deixaria entrar uma peça enchida não aguenta nem um mês e outra o tratamento térmico dada a peça e diferente de uma solta o proprietário só vai adiantar o inevitável talvez até agravar e estragar a Coroa do conjunto vai ficar mais caro

[@arthurdunn3007]

Well done!!When you don't have what is necessary you use what you have.I braised a broken tooth in a wind mill 20 plus years ago with hi tensile brass, still working.From Australia

[@dehsantanao1]

Entendo que a situação obriga as pessoas a reparar uma peça que deveria ir para a sucata, mas creio que essa peça irá quebrar novamente em pouco tempo de uso, visto que o tratamento térmico e a cementação do dente da engrenagem foi totalmente perdido

[@sandrofagundes4361]

Exatamente, um bom trabalho ,más sem muito conhecimento ,mais é um bom artesão , viu o martelo?

[@douglasdnz96]

Martelinho estiloso hein kkk

[@NikolayMelnikov73]

Согласен, такой ремонт может привести поломке тех деталей, которые соприкасаются при работе с этой деталью

[@gavrilpanciuc7200]

acesti oameni rapara asemene lucruri inainte de a se inventa youtube ,nu repara pentru vizualizari ci este un stil de viata.

[@GearHeadBoris]

This is a good emergency repair and should work well enough to keep the truck moving until you can obtain a new one. These guys know what they're doing and using the correct welding rods.

[@sleepingwarrior4618]

Why don't you credit with a complete repair rather than just an emergency repair?

[@gustavgnoettgen]

@@sleepingwarrior4618 These pinions are hardened and machined with great precision. It's impossible to repair them to even a nearly new condition. But you can do your best to make them work a little longer. This pinion will wear out faster not only itself but also the other gear it's meshing with, just from the small changes in geometry alone. It will run increasingly noisy with more friction. And since it's not the original uniform material anymore it can't stand the original forces.

[@meta5291]

Wow! Beware of these types of repairs. I guess the next step would be to sell the vehicle to some unsuspecting buyer.

[@sleepingwarrior4618]

@@GearHeadBoris I see your point but I don't really agree....but that's okay. :)

[@gustavgnoettgen]

@@sleepingwarrior4618 What did he say?

[@joeylawn36111]

Re: all the comments about how it will eventually fail, etc. - This is what they have to do to get by in Pakistan. If the repair fails, they will fix it again. The truck driver needs his truck to work NOW, or he can't feed his family. And the repair cost isn't expensive. New parts are for them. Finally, this man can repair ANYTHING made of metal from all the videos I've seen of him.

[@stovepipe666]

Well said

[@adrianomotosrestauracoes2639]

Aqui no Brasil falamos : A necessidade faz o sapo pular .

[@projectdiy985]

Well said... But this is the reason why accident happens, driver has to choose food/save money or their safety/lives

[@Raidersforlife229]

True that

[@summitlt]

Using the word repair in this instance is very flexible. Ive built rearends when a thousandths of an inch matters. This can't be withing hundredths. Those things matter, a lot. This would be a good fix for a lawnmower or maybe a low hp tractor. But in a truck? First load on that thing it's coming apart, beat case it'll destroy everything around it in time.

[@Bernielcc]

As a retired machinist 15 years in the level of respect 🙌 these men 👏. If only the customers in America knew what is it to make precision decisions not written in textbooks shows how bad its in america.

[@Angel_the_Bunny]

15 Years is hobby level in machining.

[@Bugsy0333]

@@Angel_the_BunnyI was a machinist for 33 years and no i could not do this,So your full of shit!!!

[@FordRangerClassics]

It's bad in America because collectively we can replace broken things?

[@Bugsy0333]

@@FordRangerClassics That's all we do. Nobody fixes anything anymore . Pull it out put in a new one.

[@FordRangerClassics]

@@Bugsy0333 there's a line between throwing out a lamp because it needs a bulb, and trying to fix it after it has been run over by a moving truck. It's okay for value to exceed worth, and okay to find value in something considered worthless. But truthfully, many products in America are designed to be unrepairable or difficult, so things will get thrown away. Don't be mad a people for what's being sold. Or be mad at people who just want to trash the part because $2,000 part + $8,000 labor = 30% of one load of cargo that could cycle 3 times a day, either.

[@dionisiodavid5030]

Esse profissional faz esse trabalho a 30 anos e sabe o que está fazendo, agora quem não sabe fazer fica criticando.

[@joseiltonferraz3193]

Isso não aguenta. É dinheiro jogado fora.

[@wiltonmarcos7403]

Vai quebrar tudo de novo

[@ricardoaniballosadaherrera3690]

Lleva 30 años haciendo un pésimo trabajo. No sirve

[@ROGER79514]

Realmente o pessoal critica de mais. Mas a realidade é que não sabemos se naquele pais tem a disponibilidade de uma peça nova. Mas uma coisa é óbvia, o reparo não vai durar muito tempo porque a solda não é temperada igual o resto da peça.

[@timjohnson1199]

I represented a large gear manufacturer in the field in all kinds of situations. In a precision spiral bevel pinion this repair will, under full load, fail again. In a desperate situation I can see doing this but I would have installed it, blued it and run it and ground that welded area over and over again till it matches well. That said, there was still plenty of the tooth left in back and some success was likely by shifting the tooth contact back. Run that unit lightly and order a new pinion and ring gear.

[@1crazypj]

It looked to me as if it was never assembled properly in the first place? The heat affected area will be crazy hard and probably very brittle.

[@timjohnson1199]

@@1crazypj That will be the least of it. The profile will be so off that the high spots will be overloaded and cause small leading to big failures.

[@flhusa1]

Why did it fail in the first place ? Probably a manufacturing flaw in the process of making it. The metal looked bad where he repaired it before he started. I could see graining.

[@billmiller7138]

@@flhusa1 It was probably run a gazillion miles till it got loose. Have you ever seen the way they severely overload their trucks? So just let the clutch out a bit briskly on a grossly overloaded truck with a ridiculous amount of backlash in the ring and pinion and kaboom!

[@flhusa1]

@@billmiller7138 I know metal can get work hardened. Like if you try to cut old train rail. Harder than woodpecker lips. It could get fatigued too and eventually right conditions and boom.

[@larescats9228]

You are a true Craftsman And a very very good welder Very good my friend😃

[@buriy26]

Такие видео ,как мне кажется, снимаются специально ради просмотров, парни зарабатывают не на ремонтах,а на ютубе!

[@Slant24rusSlant24rus]

"Еще походит" =) . Интересно, в порядке эксперимента, сколько бы проехало под нагрузкой.

[@ПавелМаслов-р8к]

До ворот сервиса🙂

[@EL_Gato525]

Минут 15

[@JCasagrandeNetto]

Fazer isso na esmerilhadeira não é pra muitos, o cara é um artista. Parabéns.

[@johntorres8869]

nice job

[@ricardolevy885]

Anyone can "repair" whatever by just replacing. Hats off to this guy.

[@bingosunnoon9341]

These hypoid gears generate more tooth pressure than any other types. This workman shows great skill and confidence. When I think of all the dedicated inspection equipment I was given for gear grinding during my time as a machinist in the USA, I realize just how incredible this workman is in attacking this repair.

[@longsleevethong1457]

How long you think this will last? Think it’s good as new? Maybe better?

[@tonyiandiplock5825]

He has done a fantastic job unfortunately it will not last very long due to the problems you have pointed out.

[@bingosunnoon9341]

@@longsleevethong1457 The pinion does not operate in a vacuum. It is necessary to include the crown gear in any speculation as to how long it will last. If the proper gear oil is used and the loads are kept within limits, then this gear repair will last until the end of time, maybe longer.

[@BakeASnake]

Lies

[@giggling_boatswain]

Acceptable only as an emergency repair. The tooth has a complex surface. Lapping products will inevitably get into the oil. The hardness of the metal is doubtful, and the part is very mechanically loaded. Emergency repairs only.

[@leewriter4656]

Oh would you stop it. He probably does this everyday and people come to him cause he knows more than you do.

[@Ocelopilli]

@@leewriter4656 facts the internet is filled with know it all’s

[@1pcfred]

Every breakdown is an emergency. Least to the people that are broken down it's an emergency for them.

[@williemcdowell6319]

very cool I'm impressed at the sheer determination this man has bless you sir keep up the cool work from Evansville Indiana United States of America

[@НиколайКрымский-б1л]

интересно как он настроил гитару дифференциала и коробку подач на болгарке, чтоб профиль зуба сохранить... но когда доводил тонким кругом видно, что "везде берет", значит зробив гарно. Шэфу скажут, что только новую морковку покупать, а сами за трояк сделали

[@дмитрийзалупеев]

этот зуб оторвет нахер почти сразу . разница материалов

[@MrShlef]

Я думаю так же и у нас на заводах делают, на трубу зуб наварят, болгаркой зуб сделают и вперёд.

[@MrShlef]

@@дмитрийзалупеев кто то же писал, что главное чтоб из цеха машина выехала, или делают на продажу.

[@fanatykCZ516]

Роблять гарно =)

[@АртемСавон-р3г]

После несколько просмотренных видео меня уже ничего не удивляет. Начинаю догадываться почему не оригинальные запчасти не качественные🤔😁

[@kimlground206]

A couple of things: 1) for all those who say this will fail in a week: how is it loaded compared to the design load ? IDK, YDK. Why did it break in the first place? IDK, YDK 2) back in about 1980 i repaired the final drive gear on a JD tracked front end loader this same way, except i machined the welded teeth instead of using a grinder. Hasn't broken so far. New part was available for some crazy high price, I'm too cheap to buy it. Low speed gearing and maybe it ran a little noisy but couldn't hear it over the rest of the noise.

[@bobdole4093]

Machining a part is different than eye balling and manually grinding by hand. This is a "good enough" but wouldn't pass any form of QA and could literally fail from any minor thing. Safety is obviously not a factor for that part of the world.

[@kimlground206]

@@bobdole4093 you said, " machining a part is different than eyeballing and manually grinding" . . . Well, not really, I'm not a very good machinist. I mostly work to tenths tolerance - that's tenths of an inch, not tenths of a thousandth. 🙄

[@bobdole4093]

@@kimlground206 then you're not a machinist. Not a quality one, any way

[@kimlground206]

@@bobdole4093 you got that right brother

[@honkie247]

It's quite obvious by the fretting on the drive flank of the pinion gear. One or two things caused this. Either the truck was severely overloaded or the lubricant wasn't up to spec, or, most likely, both of these. The ring gear will show similar fretting on the drive flanks, so both are junk. Using them will circulate metal particles which will take out the gear set and all of the bearings.

[@byugrad1024]

The issue is not whether it can be repaired, but whether it can be repaired properly. Any skilled machinist will realize repair of this part is not possible due to the hardening which must take place on a gear set of this size. Welding soft metals to hard does not restore the part to original condition, and thus only provides the illusion of success, and some would argue deception of success given this work was most likely paid for. Just because your gear meshes in the end means nothing about whether the gear can take the loads originally specified. We have a saying about these sort of things. Just because you can, doesn't mean you should. EDIT: I watched the video to the end, thinking you must be putting this on some sort of helical cutting tool. I would like to rephrase my original assessment. You think you are going to freehand grind a helical tapered gear with a cutoff wheel? This is comical.

[@zamleejoel]

While I agree with most of what's being said here, I would just like to make one correction. The 650b rod is a hardfacing rod.

[@DirceuCorsetti]

Most likely he's gonna assembled it and drive it very carefully to the sale lot. Someone who makes such a bad job can't be serious as to weather the customer will return. It's only a matter of time until he is stranded.

[@takeoUup115]

Might last long enough just to get the truck home till they can get new part . It's what I would call a Band-Aid.

[@billsmith4903]

Good job. You are very talented. Thank you for sharing.

[@lukasblenk3684]

I think you will bring in to much heat with Electrode Welding. It will work for some time but i think it won't last very long since heat brings in mechanical Stress to the Part. And it also makes the Material Harder wich means it will break much more likely than before. But i would look for replacement part and fix it like this till it arives. You need to work what you have :)

[@Turbo_96]

It doesnt make it harder lol it makes it even "softer" when you let it cool in air after heating it over 723 °C (when it has been hardened before and gears are always hardened on the outside). You'd have to heat the whole part up, let it cool down completely in air, then heat only the gears and harden it like that. You goal is to have a soft core and hard, durable gears. But this won't work in this case anyway because he hasnt got enough if even any Carbon in his welds. Also impurities from electrode welding and grinding are not ideal for structural integrity + he can't make it align with the other gears 100% and this will put more wear and tear on this and other parts in the system. Edit: edited C to Carbon

[@jackopschmitt5262]

I'm always amazed how machines can be repaired with the simplest means in this world. The only problem I see here is that the gears are case-hardened! you have restored the tooth's physical form, but now the material is very soft and will not last as long as the original. The work is not bad and represents a temporary solution, so that you can continue working with the machine. Greetings from Germany

[@mrmikemanify]

I wonder how this would work with hardfacing rod.

[@michaelcorbidge7914]

@@mrmikemanify the hardface welded portion will be hard but perhaps the weld heat will reduce hardness of adjoining un welded portion unless his welding technique as it appeared to be in small bursts didn't heat up the adjoining portions too much .

[@fizzpopbangcrack]

They don't have the option to just buy a new one. That would come from somewhere like Germany for example. Do you think they can afford that? Its just not an option. This is probably the only real logical option. Its still steel, hardened or not. It will hold up for some time. Some gears are only induction hardened on the teeth, which could also be potentially incorporated into the repair process in future. The tooth looks like it broke because it was brittle to begin with, which isn't going to helped by hardening? Perhaps it will last longer this time? I doubt the machine has enough power to shear apart unhardened steel. Steel is incredibly strong. Perhaps the small weld blobs cool in the air and adjacent steel fast enough to slightly harden the steel? @Michael: I doubt enough heat will make it into the other cogs before its dissipated by the center shaft... I doubt this is the first one he's done. Probably means they work well enough to bother. Gears are even repaired by welding in the west. uwp.ca/en/gears/ All the best to all Volk; from New Zealand :)

[@jackopschmitt5262]

I work at ZF Friedrichshafen and I have to tell you that the teeth for gears or differentials are not inductive but nitrated or case-hardened! This means that the surface of the material is very hard and wear-resistant and the "core" of the material is still "soft" so that the teeth do not break directly when the load changes. And it's like cams and crankshafts, the surface has to be hard and the core soft. Of course, when the parts are well welded, the teeth don't just break, the surface isn‘t hard. It is clear to me that this is how repairs are made in many parts of the world and the workshops help each other as they can despite everything good work

[@kensticko7607]

Keeping the gear running whilst not all things are available or affordable these guys are very skilled

[@COSTASSERA]

half the way job. It needs thermal treatment for hardening

[@MkShantrul]

@@COSTASSERA I am not a professional machinist but I work in a machine shop I am learning I also do maintenance work hvac and I have taken several welding classes I thought this things needs heat treating especially after he welded on it. Glad someone else thought so too. Still great job gettinghalf way there i dont know if I could have done it.

[@ruthbees7214]

All things considered not many people could have repaired that grinding it freehand. Your not afraid to have a go fairplay to you. I hope it will work ok you deserve it.Good repair you are a clever man and a very good machinist.❤Ruth

[@erica8664]

Would be nice to have a follow up video to see how long these repairs last my guess is less than 5 hundred miles under full load.

[@williamdon3442]

I was thinking the same thing

[@chauvinemmons]

Oh how wrong you would be got to get over yourself

[@MrTheHillfolk]

I bet it got the damn job done

[@thomjeldiary9235]

Impossibility doesn't exist in this world. It only need skills. Well done Bro. 👍

[@АндрейШахматов-ы7з]

Представляю как мост завывать будет! Интересно на сколько хватит?

[@david-2631]

@Mici Fantia что ты пишешь перевод тоже предоставить....?!

[@narendrasangajwar5053]

I am impressed what an arrangement done using steering wheel, worm and worm wheel, and chuck . Great 👍

[@vantheman1954]

He probably tore apart and repaired more things than most mechanics have here in the United States. I know for myself I have so called temporary repaired somethings that should not have been repaired but replaced by the owners had not the resources / funds to do so. Had by pass electrically damaged ecm controlled damaged parts . But had to repair in stages to work not just flip a switch but multiple switches in a series to make run. U have 2 do what it takes at times. These new trucks now r sitting for sensors , water pumps and compressors because they not available to purchase due to see19 and economic failure.

[@douglasheckler7997]

I have welded teeth back on gears and they lasted for years. The person who taught me how welded a transmission gear that was broken into three pieces. It was in a tractor that the engine was rebuilt twice and the gear never broke. It's these kind of skills that are being lost. Sometimes you have to fix what you can't get.

[@marks6290]

Won’t last long but I respect the hard work. You do what you gotta do

[@earthling369]

Just purely amazing. I love seeing a master at work.

[@dodgezilla04]

Considering the front tires on that truck were completely bald, that job of "fixing" that broken tooth will last until the truck goes into the ditch the following week. No heat treatment, you local hardened the area of that tooth, you profiled the pitch line with an angle grinder, it's going to eat the ring gear before those front tires blow...