A Mechanic Repaired the Broken Pinion, Which is very Difficult to Repair | Give your Opinion

A Mechanic Repaired the Broken Pinion, Which is very Difficult to Repair | Give your Opinion
#repairingpinion
#Brokenpinion
#restorationpinion
#difficultrepair
#pkprocess

[@richardmoffatt6606]

As a metallurgical welding professional- sure. It appears functional. However, for any real purpose, pre heat is absolutely necessary and post normalization through a post heat and fine sand that is free from any moisture cooling over a few hours is pinnacle. This piece will be amazingly brittle at both ends and will fail with in a short time due to the HAZ. PRE AND POST heat are necessary prior to and after welding.

[@Twizter68]

Looking at the break point, it was welded before, which is why it failed again. You can see the pits in the splines when he's welding on the spot for the center.

[@FartInYourFace234]

@@Twizter68 bet that’s his favorite customer

[@rharrell777]

Over night, or, over week, a new peice, due from the inability to have all the metal hot enough to be in a true liquid state so proper adhesion and melting together occurs.

[@stormytempest6521]

Sad really isn't it richard? but neads must, new part will arrive in time no doubt to be fitted, but for now they have to gamble to make a living! one day they'll catch the west up ! regards.

[@SmokeMyPoll]

@@Twizter68 Could have been, but I think what you're seeing is just coarse grain structure that's visible due to high carbon/alloy steel and the heat treatment process used for manufacturing gears, as well as the nature of the break. Coarse vs fine grains yield different mechanical properties. Coarse grain metals being capable of the higher hardness that gears require. Annealing, quenching, tempering, normalizing, or even Welding (any controlled or uncontrolled heating and cooling) can vary grain structure depending on carbon content in steel, furthering OPs point about pre/post heat being necessary to control consistency in the metal-grains and massively increase reliability. Especially controlling HAZ. But ultimately there's a much finer and more controlled process to properly quenching and tempering gears before even machining. This is just scab work to get running again though, that pinion shaft will be horribly distorted.. Not a permanent fix. Cheers to the guy for doing it in Sandals though!

[@markjones1672]

Yes, the lathe tailstock was not live (or running true. Yes there was no lub used (red hot swarf) - carbon or low alloy steel at least with tired HSS tooling. Yes there was not even a hint of safety measures.Yes there was likely loads of slag in the largely un prepped joint. Yes cast weld metal (with however much Nickel content) is cast metal - not forged, stress relieved & heat treated. Yes to all the horrors inflicted on this part(s), including being chucked from height onto the helical gear end when done. But. If you lived in the arse end of anywhere on next to nothing this man would be on your Xmas card list for sure. Agree with earlier sentiment that we in the cosy West have little idea of the real world, for so many others around the globe as we wait for DHL (or whomever) to deliver nice new, expensive & totally quality compliant shiney new bits so we can continue driving down to the shops on lovely smooth tarmac. As an erstwhile engineer I wince, but also doff my virtual cap to him. Walk a mile in another mans shoes before you judge how he walks..........

[@neilcook4710]

Agreed. I saw a show about someone cobbling together his broken citroen 2cv into a motorcycle to escape being stranded & possibly dying. Sure it was a hack job, but every so often that's all you need.

[@ffjsb]

If you're too poor to properly clean out the area to be welded, your work will always be poor....

[@perryjames4604]

Mark Jones... Over there in the ass-end of Uzbekistan you would be the fix everything guy. Actually, so would I...

[@perryjames4604]

@@neilcook4710 He did. He really did.. Practically without tools too. Imagine his elation when he drove back to civilization.

[@billmiller7138]

Throwing it on the floor is quality control testing.

[@plinker6062]

Impressive work indeed. Unfortunately if that pinion gear isn’t heat treated to case harden it, it is going to last only a few hours of service.

[@fastinradfordable]

Big words Can make the world Feel Small But.. u simply do not Know

[@AB-nv7bz]

Ya my thoughts exactly. It’s going to fail 1/4” to either side. I thought they were going to re create the part. It’s not repairable.

[@stormytempest6521]

Spot On Plinker, but they have to Gamble... they have no choice, we know that, One day they'll Catch the West Up! regards.

[@khalsasikhpunjabda]

Does it require hardening?

[@Deathrape2001]

It's only supposed meant 2 last long enough 4 them 2 get paid =)) What's funny is they have all the gear there 2 harden it if they wanted 2, but I guess they R worried about the precision required 2 not make the rest of it 2 brittle? LOL Makes the most sense 2 UNharden it all, then REharden the whole thing =D

[@caseroberts9863]

This is a fine example of doing the best you can with what you have. "Well done"

[@martinswiney2192]

Not really. On the road this is dangerous and things like this get people killed. Better for the truck to be sidelined and wait for a new part. Or even junkyard part. However I doubt they have many junkyards as they keep making these type of fixes. I refuse to call this a repair

[@caseroberts9863]

@@martinswiney2192 To each is own. I think the PK stands for Pakistan. If you watch the news, you would know we've been picking on the middle east for over 40 years now. In the end. We've ruined their economy, and infrastructure. This fix, as horrible as it looks to you. Was the best they could do. It's not dangerous. If it breaks again they'll simply put on another band aid. My point is, no one was hurt the first time it broke, highly most likely won't hurt anyone when it breaks again. This is normal for them, given their circumstances. Or mabey you could fly over with the proper machine tools, so they can fix it properly. You know, because their safety is your chief concern.

[@23101979T]

@Case Roberts Hahaha, great comment!

[@gordonwelcher9598]

I like the way the trucks are painted in rainbow colors and that the employees are allowed to wear dresses.🌈

[@Pdx616]

ceaseroberts is correct

[@evengineering7136]

I always enjoy reading the comments from machinists in 1st world countries!! Some of you(not all) have ZERO concept of the cost of things in countries where an average salary is less than a US dollar. These guys and us (in Southern Africa) always recover components like this. They are 100% reliable and repaired with extra ordinary skill. I won't go as far as to say they are as strong as the original, but if it lasts another 10 years it is fine. You should see how we weld up and repair chipped pinion teeth!? Those ARE better than new because the slightly softer weld is malleable and does not chip. The original bearer teeth protect the welded repair and the crown wheel wears evenly. The diff can be slightly noisy at first, but soon laps into the mating gear.

[@mortanicus5871]

Love it. I consider these videos educational and I'm quite impressed at how what they can accomplish with such rudimentary tools.

[@detroitiron302]

I understand the extraordinary differences in cost/expense, and it is impressive work considering the circumstances, but if soft, malleable steel was a desirable trait in hypoid gears, that's how they would be manufactured by the OEMs. Please don't mislead people who don't know any better into believing that these machined parts can be manufactured or repaired to 100% condition by any schmuck (or skilled craftsman) with only a welder, a lathe and some hand tools in his garage.

[@billtribble7197]

most us companies would not let mechanic attempt this sort or repair. too scared of liabilities if it failed & hurt or killed someone. no such issues in third world countries. lives are cheaper in some places

[@richsackett3423]

Considering the original damage, that repair has no chance of success. It’s just going to break and spew gear oil in less than 10km.

[@richsackett3423]

@@mortanicus5871 A milling machine is not a “rudimentary tool”. Wtf

[@frosthoe]

As An alternative... I believe that friction welding the two halves together in a powerful lathe ,while blowing raw unlit propane over the joint as shield. Then heating and stress reliving/tempering for hardness, it might work for the long duration. But what was shown ...NO. The welding filler, overheating and o2 atmosphere made the welded area REALLY WEAK. It will break soon...because ive done this too in the 1980,s with transmission yokes. its to bad that is all they can do, I sympathize. This is exactly how I grew up, hopelessly fixing shit you knew would break, breaking it, refixing and then finding its limit , and living with that...good grief, that sucked. All things readily available, yet none in hand. and no money to spend.

[@Deathrape2001]

Can't they un-harden the thing with heat, then make a mold extending over the broken bit by shifting it a bit, then pour in some 'gear metal' melted down from another similar piece, then re-harden it 2 make it 'like new' more or less? =) U can't 'friction weld' it because the break is not flat. U will just make a mess =P

[@justincace5517]

Your idea of friction welding is a good one. They would be well suited to make a resistance coil, while using the welder and heating the shaft on the lathe. The rest of your post makes me feel like we're hangin' in the shed haha. Thanks!

[@Deathrape2001]

​@@justincace5517 U can't friction weld it because the break is at an angle. U guys R retarded =))

[@justincace5517]

@@Deathrape2001 well your mediocre brain would think that the surfaces would be tried without being prepped first. Your attempt at somehow seeming smarter than others on the internet, which in itself is pretty feeble, has failed. And that's why you deleted your comment anyways all good

[@justincace5517]

@@Deathrape2001 look everyone on the internet! This guy said gear metal! LOL gear metal lmfao...

[@inquisitorwalmarius6650]

As a machine specialised cnc tech I can only say that I know many in my trade, wouldnt have been able to do this after, without loads of measuring tools and calculations. It would say that was impossible to make it into a working part. But what I see him do here, are essentially what they did on the spot on tractors back in the day when a shaft broke in the fields. My grand father have told me many times about this approach, but thought it over played, but as we can see here, it works. Maybe not for long but if it's long enough so that a spare part can be obtained, then it is worth it.

[@minchy83]

I’m not sure what you mean. I think most people have the ability to mistreat machine tools and enact a repair that will last approximately 5 minutes. 😂😂

[@inquisitorwalmarius6650]

@@minchy83 far from all people, very far. I know more that wouldnt be able to do this than i do that would.

[@stevenbelue5496]

What!!! There wasnt much skill involved here. There was so much contamination and voids in that weld, i could have bondo'd it and it been just as effective. The fact that this part broke with a proper forging and heat treatment in the first place lends me to believe it would fail immediately if placed back in the same environment. Likely would fail in a pinto, maybe a barbie jeep, who knows. There was no heat put into this piece prior to the weld repair or after, thats a glass pinion for sure. Seriously all i could see this good for would be to limp something home, maybe!

[@jamespondy0]

Bro, it’s not that deep. He lined up the splines tapered everything off, and welded it. And no, this isn’t something you can do in a random field, lolwut

[@inquisitorwalmarius6650]

@@jamespondy0 there are ways that you can do it in a field. Requires a welder and and Some manpower only, if you know what you are doing. But some things are only learned if needed ;) And bow they judt get the vehicle to a shop that fixes the issues, my grand father keeded to fix things himself with his farmhands due to costs. We are talking more than 40 years ago. But you are allowed to think and believe what you want, i wont judge.

[@erickchurch5390]

I appreciate the ingenuity and effort here, regardless of how long the repair lasts.

[@stormytempest6521]

​@@labrikorn_3299 Do'nt be so cinical, they have to Gamble! wrightly or wrongly.

[@stormytempest6521]

SPOT ON ERICK! one day they'll catch the West Up, regards.

[@papalaz4444244]

@@labrikorn_3299 Labrikorn _ 2 subscribers

[@HeavyMETALoO6PA6OTKA]

Жаль, что оператор не показал на сколько метров от мастерской отъехал грузовик после такого "ремонта". ))

[@user-pl5xc8cf6v]

У меня чуть кровь с глаз не пошла. Эпать они специалисты

[@HeavyMETALoO6PA6OTKA]

@Артур Долгий А мне не очень. Такие станки прямо с конвейера надо в металлолом отправлять.

[@user-mg9gw4ir2m]

@Артур Долгий а когда каленую железяку тупым резцом? Там уже нечего жалеть- эти станки у них со времён британской колонизации работают.

[@user-mf3nc9pg5p]

@Артур Долгий и мне жалко, хоть я и сварщик. С такими,, ай нанэ,, технологиями почему-то подумалось про,, болгарку,, но шлак отбивали отвëрткой. Но без,, болгарки,, не обошлось.

[@Dimon__1976]

@Артур Долгий Вы тоже заметили какая жёсткость у станка))) ... и что за резец мастер использует))))

[@jacqueslefave4296]

Considering his limited resources, I think that he did extraordinarily good work with very limited resources. Well done, good and faithful workman.👍💪🙂

[@AA-69]

Really 😂🤣

[@davidrockey7190]

Don't get me wrong and give him credit for trying and it'll be a quick fix but I wouldn't trust that going down the road when it fails

[@bluebear4909]

Do you think he had limited resources? 😅

[@glasslinger]

@@bluebear4909 That lathe! OMG!

[@jamesmonahan1819]

What was limited? You're not going to tell me he should have used wire. Are you?

[@sparty94]

you do the best you can with what you got, but it would be a miracle if this repair holds together.

[@kunkeypander6293]

Good to see this shop is working up to osha standards

[@madmat990]

Yup! Gorgeous work boys! You can tell by how it's tossed on the floor at the end, LOL!

[@samain11]

I did many repairs like this when working as a mechanic on seismic crews in Libya. Some of them were "get me home" types that didn't last long but quite a few lasted a few months until replacement parts arrived. The lathe could have done with some coolant to help the tool stay sharp though.

[@bigred1247]

This wouldn't pass the test of me pulling liquid ammonium nitrate solution in twin tanks 65,000kg's up 18% grade for 15miles.he got it hot no temper left and its pig iron to start with

[@dmusket240]

Looks like crap.. Isn't as strong. Spline is shortened with a reduced footprint. Break is at edge of transition. Steel has changed colors. No heat treatment. So many ways to fail.. Question is.. How long did it last after that fix?

[@daleburrell6273]

@@dmusket240 ...well, "ya can't please EVERYBODY!!!!" IF YA DON'T LIKE IT- THEN YA DON'T HAVE TO EAT IT-!!!!

[@jacqueslefave4296]

I think that he did an extraordinary job considering his limited resources. I do think that even a little coolant would have gone a long way. Just having an assistant gravity dripping a little stream of water from above would have helped.

[@anonimoporsiempre6033]

I love when everyone become experts suddenly and what they forgot is that he is NOT IN USA and he is DOING WHAT HE CAN WITH WHAT HE HAVE. Give the man a Little CREDIT Come one WE KNOW YOU ARE THE EXPERTS AND YOU LIVE IN A PERFECT WORLD. But no him 🤔😲🤤🤔 July-21-2022. 9:26am. 😠😡😎

[@davefman1984]

As a machinist I am both mildly impressed and appalled by this repair. I understand they have very limited resources to work with. It's just cringe seeing the general lack of precision for a part that needs a precise fit.

[@rqbass7670]

100% my thoughts. Sometimes I wish I wasn’t so quick to make excuses about “why ______ won’t work”. I admire the get it done attitude but the lack of precision, heat treat, etc., etc. makes me 😬

[@Deathrape2001]

That's not true! U can clearly see in the video they have all the equipment needed to make the whole thing from scratch! They have a foundary, machining stuff, etc. They could easily 'un-harden' then pour in some 'gear metal' then dress it up & 'good as new', or maybe it would be easier 2 make it from scratch? The twisty bit seems complicated, but maybe they have a machine that can 'trace' the curves? =) If it's from a mold all they need 2 do is follow the existing curve, but yeah pouring into a mold 2 fill the missing bits then re-harden seems easiest 4 a 'proper' repair rather than 'botched' =)

[@cranerigging3604]

Looks like they got it to fit just fine and worst thing that could happen is it might break again . Now be honest ... You would not even try to repair that pinion shaft even with the most sophisticated equipment ? " Wink "

[@Deathrape2001]

​@@cranerigging3604 Assuming that it would be cheaper in the long term to repair it (including reliability so don't have to repair multiple times) then I bet it would be about the same amount of effort to simply de-harden, then melt some gear steel from a spare part, then pour in the missing area based on a mold moved from an unbroken section, then re-harden. I think that would last a lot longer =D Since it broke already at full strength, making it even weaker seems a waste of time & $ =P

[@Deathrape2001]

​@@cranerigging3604 BTW: Another option might B 2 modify the entire assembly so it is a larter, stronger part even though welded? LIke attach bracing & stuff? I didn't get a good understanding of how it is attached =P

[@nomorewars1366]

You work with what you have to get the job done, awesome patch up with limited tools and parts 🙏🙏🙏👍👍👍👍👍👍👍👍👍😍😍👍

[@THEMOWERMEDIC1]

Customer- it broke again soon as I let the clutch out

[@colleendougherty4475]

yep same spot dam .

[@klauswunderlich6169]

You're giving them too much credit. I think it will break when they try to tighten the nut .

[@colleendougherty4475]

@@klauswunderlich6169 yep just the sideways preasure from the monkey wrench on the yoke ha ha .

[@andrewwhitnet3557]

Hope the bill gets paid quickly.

[@rndmentertainment7929]

Hats off to hard working skilled people in Pakistan 🇵🇰 rebuild anything and everything brilliant 👏 👌

[@Dirty_white_boy]

A machinist with a mechanically inclined skill set. Incredibly awesome to see!

[@nojunkwork5735]

Absolutely an amazing repair, if you only drive down steep hills and never try driving up any.

[@papalaz4444244]

nojunk work This channel doesn't have any content

[@zachariebrummaire4695]

Way beyond insanity ! Not a chance dude !

[@jamesb.9155]

I would like to see such a repaired part stress tested to the breaking point to judge the effectiveness and viability of the repair method!

[@SlavaSFX]

It will fail when you turn on the car. Welding hardened metal without preheating and release will not take you far.

[@richardschofield2201]

@@SlavaSFX it will be from a truck not a car. If you nurse it to the destination I'm sure it will be fine. Driving gently, avoiding hard gear changes you could probably keep the total load at 10% what the original could handle. I'm sure this fix will handle more than 10%.

[@iddddaduncan]

Your warranty is to the end of the parking lot.

[@CJLeTeff]

Amazing video on how not to do things correctly! But also amazing how Indian people are so creative and adaptive!

[@Deathrape2001]

As a non-metal guy just having watched some knife shows, it's obvious the correct way 2 'repair' it would B 2 grind down the broken areas of the thing then un-harden it, then make a sand mold around the area U want 2 fill & melt down a similar gear & after grinding the broken bits clean pour in the empty area, then grind into shape & re-harden the whole piece. It would take about twice as long or so, but not a ton, & it would last a lot longer iBet =) They talk on knife shows how U can un & re-harden things depending on the amount of heat & how fast U cool & stuff. U also want 2 use the same hard type of steel, not weak-azz weld$hit.

[@hakansundberg5105]

Nice! But have any evidence on how long time this piece held together? Unfortunately I have doubts that this job was of any use at all(?) - Might crack again almost immediately(?)

[@colinellicott9737]

This is a great example of making do. As long as it's not my kids in the back of the wagon it goes into that rides on the edge of that high cliff pass. Many years ago a friend asked me to weld up the Al bracket that held the propeller shaft onto his micro light one seater. I almost did it until that little voice in that back of my head said "Wait a minute. That's a life critical, single failure point, support member in an aircraft". So I gave it back to him and told him to buy a new one. He died thirty years later of cancer, the father of three. A good life. Make good decisions people.

[@kaiwanshan4278]

Excellent Skill Thanks For Sharing

[@Rambobambo007]

The UK 🇬🇧 needs peaple like this 👍

[@danielbrown8602]

Being able to use what you have. My hat is off to this guy even if it doesn't hold. Great effort!!

[@lendavidhart9710]

The fine art of making do

[@carldoby2827]

I'm a machinist and him machining that hard shaft was like fingernails down a chalkboard.

[@ProfessionalPatches]

You can hear the file gliding over it. I agree lol

[@mrb.5610]

Earthing the welder through the lathe's headstock bearings did it for me ....

[@inquisitorwalmarius6650]

It did hurt at times when watching, but luckily I didnt have sound active. But respect that he actually made a severely broken part functioning again. Make do are never a nice thing but it can work. Most important is that they got a part that they could use to move on with.

[@terryquinn2119]

MADE A GOOD JOB SUCH A GOOD TRADESMAN WITH LIMITED EQUIPMENT .WELL DONE

[@jstewlly4747]

Yes people this wont last WE KNOW THAT but will it last until part comes in YOU DAMN RIGHT!!!!! Great Job saved company hell money

[@FastHemi]

I've been a manual machinist for 30 years. And I gotta give these guys some credit. Definitely crude, but they got something done 👍🏻

[@noimagination99]

I'm impressed with what they did with what they had. Dull lathe cutter, and all. Lot of labor, but probably the best option they had.

[@swamivardana9911]

@@michaelhill6451 in India too. This is a fake video. The tail pinion is easily available @ @$30 second hand. You can buy a second hand set for @$50. This welding won't work anyway.

[@swamivardana9911]

@@michaelhill6451 I have full knowledge of this. This is a fake video. This welding won't last 5 second on a truck. The part shown is a Tata 1210 truck tail pinion. You can buy these second hand or new easily.

[@diegodonofrio]

Impressive work, thanks for sharing

[@blackbirdpie217]

I think they are very resourceful, but I've been in auto repair my whole life and in my opinion the pinion is probably the most highly stressed point in the entire driveline. I saw the crystalline structure of the fracture, I've seen it before.. Stress causes that. I don't think this repair is going to hold especially seeing the kinds of loads they put on the TATA trucks over there it's pretty intense. I just think it will fail quickly.

[@AlekseyCamodelkin]

Нужно проваривать с самого корня, а не по поверхности. Это просто красивая игрушка. Выбросите не тратьте время.

[@isaevafable]

А середина вроде не работает

[@TheLEMRR]

Fun to watch, very resourcefull. But this had to fracture immediately under load.

[@thomasfx3190]

Things we would never attempt at home but these clever chaps can make a field expedient repair just using the tools at hand. Is it perfect? No. Will it probably get that big truck down the road until they can scavenge a good used one from another truck? Sure. Many things are possible when you slow down and remove your preconceived notions of what will suffice for a solution. Do not sacrifice good for great. Well done men!

[@pierre-rose7783]

Awesome work but only reliable enough for a museum piece ! The amount of stress on such a part is too high for a mere weld !

[@5tr41ghtGuy]

I feel sorry for that poor lathe - what he did to it was positively brutal! If this is a "limp home" repair, it might be OK for a short while. In normal use it will likely fail again soon.

[@andrikarawang4544]

M998i899o8

[@ffjsb]

I absolutely agree.

[@nunosantiago6744]

I agree,of course

[@raularrese3926]

That lathe is already worn out , Might be the beater lathe

[@BESHYSBEES]

My initial thought was the same

[@nigelrg1]

I hate to say it, but this reminds me of years ago in Africa, when I was driving a Hillman Imp. Luckily I was only doing 30 mph when the rear wheel fell off. The independent suspension half-shaft had broken at some point and been welded together. In places like that, you do what you have to do, but it can be dangerous.

[@anonimoporsiempre6033]

Don't worry the life it's self is dangerous everyday 👍🏼👍🏼👍🏼

[@kennethjanczak4900]

great craftmanship, but it will break when they dont heat treat it....... but thanks for taking the time to make the video and share it.

[@paulg444]

Ill say one thing, his carbide bit is top quality! The real story here to me is the lack of maintenance on a valuable piece of machinery. That kind of failure should never happen, especially in a country where heavy machinery is so valuable. I wish I could have lent them my wire wheel when they were filling.

[@johnfenwick9165]

Truly a true tradesman with a level of unmatched skill 2nd to none . I grew up in Connecticut the stomping ground for skilled tradesman and spoiled with new tools ,I could see the wisdom here and it's a pleasure to watch and learn even at 52 yrs bravo!!!!!!!!👍✌️

[@FIVE-0-APOCALYPTO]

Dude seriously you are clueless, what this is is somebody with enough gumption to get the job done and that by no stretch of the imagination is anything skillful a true tradesman as you say is an insult to people like myself because within the first minute I can already point out a few things that proves that this person you look up to is nothing more than a brutal sob represents exactly why you go into most random shops and equipment is in poor condition. He's got the wrong kind of cutter much less the wrong kind of grind on the bit itself, he has high speed steel tooling on there which is good for like aluminum and stuff and what he is working with is hardened tool steel. Any good Machinist when starting the first cuts of facing off the broken and angled shear point, would chuck that thing up in a vise and take a grinder and at least grind off the angled portion of the breakage in which he is taking a high-speed steel cutter bit that is resting on the tool rest itself about 1/8 inch too high and you hear that very high pitch frequency squeal? do you have any idea what that sound is and why some of those cuttings are actually a lot of them look as if they are painted red it's because they are so hot and yet so thin of a cut that is still turning red as if the color of paint and that's because in effect he's not cutting and the tool rest in top slide itself is taking the brunt of this animals abuse because look at the tower and tool rest itself that the cutter bit is attached to and look how it's getting jarred up and down and back and forth constantly and you the idiot dare call him a true tradesman. You know nothing and neither does that butcher who was doing nothing more than abusing machinery and is questionable of whether or not he's even capable of sweeping the shop floor properly much less cleaning a machine you are a very disturbing person defective I would say to even dare speak on subjects you know nothing about...

[@jeremytodd4906]

Wrecking lathe headstock bearings is a skill?

[@FIVE-0-APOCALYPTO]

@@jeremytodd4906 ....not as long as the tool rest top slide and carriage are "gibb'less" or worn out enough so it all has that nice sloppy three-dimensional movement to shake and shift to offset that friction thumping for each rpm of "turn force".... You know, ive seen dudes that were good and I mean real good, but not like this kind of video, I didn't think it was possible to learn more stuff. Dude, to cut even more effectively by simply turning up the RPMs toward the maximum she's got chief.... And did you see that? .... When he was thump cutting the original piece he was taking off thicker chunks of material until it it faced down smoother and smoother and as he faced it down smoother and smoother the cuttings became very thin continuous shavings like ribbon curly ribbon..... Who would have ever thought of doing it the opposite way if one was going to face that chunk of busted scrap metal that perhaps could have been saved to throw as hard as you could at some Northern Europeans head who ...you know... they think they're real smart and stuff? I now believe those horrible stories of colonization and hundreds of years of cultural exploitation...etc.. Could you imagine how much money he could command from an employer here in America?

[@jeremytodd4906]

@@FIVE-0-APOCALYPTO you could try adding some of the swarf to your head, it might improve your IQ.

[@FIVE-0-APOCALYPTO]

@@jeremytodd4906 are you Jewish?

[@ronblack7870]

this repair job took 1000 times longer than the repair will last.

[@blastermaster2383]

Where some of these people live you have to make do with what you have.

[@ismaelguzman8693]

@@blastermaster2383 exactly

[@kennethhlavik8155]

Good job"" but, I would have covered, (protected) those threads Before welding on it first. Great job with what you had!

[@randyschneider6086]

Looks like a good repair,but being a component of the drive train under great torque I would opt for a new or used pinion,I’ve repaired truck drive train using used parts and had good luck.

[@craighansen7594]

It was a real show of effort to make that repair! With the arc weld on a forged part how long will it last? If it can be loaded lightly will it run for long enough to get by? I once welded the threaded stub on a motorcycle crankshaft with a mig (it held the flywheel in place). I cringed when the engine was started fully expecting it to break. No charge, no guarantee on that repair. A couple of years later I asked if it broke and the guy was still frequently riding that dirt bike.

[@lop8828]

What do you mean no charge. Just give away the infinite time

[@randmayfield5695]

A highly skilled machinist repaired a sheared pinion...better. If it lasts long enough to pay for itself plus a little bit more. Then no harm, no foul. I've spent years wandering around Southeast Asia and have made it a point to observe things just like this. Resilience and the skills to make it happen....whatever it may be.

[@davidgayford]

A highly skilled machinist who sprayed grinding sparks all into his chuck and wherever else.....

[@randmayfield5695]

@@davidgayford I think you missed the point.

[@davidgayford]

@@randmayfield5695 I think you missed the point.." highly trained machinist "....

[@randmayfield5695]

@@davidgayford There you go. I said 'skilled' and you in your impudence read it as 'trained'. If you were a machinist at all, you couldn't do this repair. It would be an 'order the part' instead of 'make it happen'. I really don't want to criticize anyone but here in the advanced world we wouldn't even consider this repair as viable. But if it gets you a few delivery cycles through your day for a month or two, then it's a win win.

[@theduke7539]

A machinist who is probably going to lose an arm one day and if hes lucky, thats all he'll lose when some massive chunk of his steady rest snaps off because it wasnt locked down tight and just vibrated with an unsupported part until it sheered off at mach jesus

[@papalilburn]

Gotta love the close tolerance angle grinder! Awesome effort and very entertaining!

[@simonjz05]

Can't help thinking that the first time 1st gear is engaged and the clutch released, there will be a "ping" and back to square 1. Looks like he did his best with what he had though, so kudos there.

[@craigmorgan4676]

Agreed 👍 brother too much stress on the metal!🤨🤔🤯🤨🤔🤔

[@111111111Tiger]

I doubt there will be an update if that happens

[@azizurrehman3079]

I want to ask this video uploader to tell us how long this repair lasted.

[@curtisricks9043]

A good hour, and then it was installed.😂

[@C10Scottsdale]

You have to admire his ingenuity and tenacity to perform this type of repair. Where he's from they band-aid things back together all day long. That is how they live because they don't have much money. Unacceptable in the U.S. but in some parts of the world it's the norm.

[@richardmaurer9002]

That’s gonna be the United States when Joe Biden gets done with us

[@stormytempest6521]

HI, yes your right, make do and mend we call it in England! needs must, love their ingenuity as well, ONE DAY THEY'LL CATCH US UP! regards.🇬🇧🇺🇸

[@victorramosjr2239]

That's what I was going to ask. Would this repair even hold up? Like you said, in a pinch, this would be the only option if machine work is all you have at your disposal. Great video though!

[@stormytempest6521]

@@victorramosjr2239 HELLO, Its a gamble doing a repair like that or even attemting it! but they have no choice without hardening the steel repair will fail prematurely! thinķ he knows that, just getting the money for a new part is a major problem over there obviously, regards.

[@techs1smh13]

No dumping clutch at 7500.😂

[@kamnapavon4638]

Was a Lot of Work. Likely whatever broke it, will repeat it being required.. As it takes a Lot of break, that specific part and now that is the weakest link.... Great Job.

[@st170restoration]

Good job. They’re getting on with it just playing the hand they’re dealt

[@richardbaumeister466]

It just won't last. Maybe around town but the first torque situation it will fail

[@neicarlosleal6945]

Amigos obrigado me sinto feliz assistindo uma aula de reparo. Que maravilha parabéns

[@robertphillips2983]

Truly horrific. I liked the shock load test at the end when he chucked it onto the concrete floor, just to see if the pent up internal stresses shattered the thing in half again!!

[@user-nh3he9ds4e]

Весь ролик ждал болгарку - и о чудо дождался

[@fuck_the_world]

Весь ролик ждал ЧП в горах Пакистана, автобус в пропасть и всё такое. Видимо пока ходит.

[@user-yf3bf8sm1l]

Когда он токарить начал у меня кровь из глаз потекла. У них видимо один токарный станок с одним резьбовым резцом на всю деревню.

[@user-fr9tm1tk2l]

Вот куда положил после этого смеха там он должен и ЛЕЖАТЬ

[@Visionery1]

The force on these pinions is tremendous, the truck may get out of the yard, but he won't get far when loaded.

[@sreeramg9205]

Excellent job ,mechnic very skilled

[@philipneri9482]

Have to admire it for what it was…an on-the-fly repair…something done everyday to greater or lesser degree in garages across America!

[@hajjejklehsn7016]

B

[@Sman7290]

That is most certainly not done everyday in America. Other parts of the world, yes. In America, we'd prefer a new part and the delivery driver would do it off in about an hour.

[@richsackett3423]

No. Just no. You will go out of business in US ASAP trying that Fred Flintstone BS on a customer's car. If that half-assed repair is at all possibly linked to an accident, they will be sued out existence. Are you mental?

[@joeborg1429]

A waste of time.

[@nunosantiago2273]

Bloody hell, that was scary. I think they should name these videos something like " how not to do repairs in precision and highly stressed components"

[@garffieldiscool1163]

If there is a right way it would be best to stess relieve the part. Then weld and machine. Harden again after job is completed.This could snap on the joint.

[@coltlewis5871]

Oh, well then you should watch more of these lol. Yes, most of it is terrifying, but you also have to admire their drive. They do things I wouldn’t do, like welding a pinion ( extreme forces, I have my doubts it’ll hold up ), but hey they got it done.

[@jimmycricket5366]

That is exactly why in the title of this video they have asked for *your* O'pinion.... They obviously don't think theirs will last long.😉

[@Altair885]

Love people like yourself who criticise other people's work, like you know better? No you don't, you'd simply buy a replacement part because you're lazy and don't have the ability to do it yourself!

[@coltlewis5871]

@@Altair885 It’s probably because we do know better. Do you understand what that part they’re repairing does? Or the potential consequences of it failing? This isn’t a “everyone gets a trophy” world, in the real world there are consequences. If that part fails you have the potential for a very large shaft to be uncontrollably spit out from under the vehicle. Potentially killing people, causing property damage or loss of control of the vehicle. Some metal parts go through a special heat treatment to change their mechanical properties. Welding changes those properties once again in a random way. Welded areas tend to become very hard, and brittle. Some parts such as this one need to be able to withstand twisting forces over and over through millions of cycles, welding that part will likely change it in a way it will no longer do that, it will snap. Causing the shaft which is spinning at a high rate of speed to sling around uncontrollably. Done as an experiment ( as it appears to be the case here ), it’s fine. But it’s very dangerous none the less. We’re not being “mean”, we’re being realistic. You’re on KZbin sunshine, all walks of life on here with different skills and back grounds, careful how you speak because it makes you look ignorant when you attempt to correct those people, a lot of us do know exactly what is going on, which is why we commented. I’m sorry if that hurts your feelings but as I said, the real world has real consequences, and they’re playing with fire with that repair. Just because you can do something, doesn’t mean you should.

[@KG-yn9qi]

Hey making the best you can with what you have is all any of us can do!! So two parts are now one again! Now as for use and working time will tell! But any time is more than no time when it was in two parts!!!! So the only value is did it accomplish what was needed and did this process cost more than a replacement, if other parts were available! As for me there is no cost to me but my time watching! My choice to do so! Seeing someone trying their best to correct a problem and achieve this is far more rewarding than a lot of other stupid, destructive videos! People are people So well done Sir gets you out of a jam till better repir can be done! Great!

[@Engineersoldinterstingstuff]

The skills of getting the part together to privius dimensions is as usual in these videos fenomenal. Also, as usual, the surface hardening of the original part is totally omitted. Gears are carburized and splines like these are often induction hardened. My guess is this will have maximum 5 percent lifetime as compared to its original specifications - however this is likely enough if the repair is cheap considered the age and condition of the truck.

[@HHHAAA111222]

Welding a hardened pinion would anneal the material - or possibly make it harder and even more brittle. Either way, the material is compromised. But after a nuclear holocaust, these people might have skills we lack when there is nothing left in the ‘land of plenty.’

[@richardmaurer9002]

True... but if they were so inclined, they could put it in a furnace, anneal the whole thing, re-temper it, and it could be 80-90% of what it was.

[@walterhassard8257]

Ever been to the Ozarks?

[@user-ep6np9qk3f]

But this shaft will not work for long, as it received increased thermal loads. Here it is important to know the hardening norms according to the thermal table for such shafts. In appearance, this shaft carries constant shock loads. I think there is a different metal structure at the welding site

[@adalila8466]

Well it will work for now for a while people doesn't have money like America to change a part every time something brakes they actually fix shit in a different country so good luck buying parts every time something brakes on your car Sr.

[@RADVIX313]

@@adalila8466 tell me your privileged without telling me😂

[@RADVIX313]

mr thermal guy here, is giving his valued opinion. those guys in the vids prob worked harder than most of these guys commenting with their Ac cooled shops... tell me about struggle

[@Dime_Bar]

My shaft also hardens and suffers from thermal loads when being handled.

[@tedtedness184]

@@RADVIX313 I love how leftist "privilege BS" is thrown around like the cancer they are.

[@Cpt.SnaggleTooth]

Great work, but I would imagine this would only hold for a very short period of time.

[@Philscbx]

Wire Feed with stainless and blow torches on either side - maybe maybe maybe. Then oil dipped after fully heated. Then installed - do a burn out to see if worthy. But also a grade 8 1/2" bolt 2" long as guide pin press fit in the center would at least add a little moral support. Stick welding, not so much. Cheers, as a farmer, we do alot of really weird repairs with scrap piles of nothing.

[@sxsboy2253]

OMG!!! apparently I’ve spent way too much money on measuring equipment and decent tool bits when the cheep hardware store stuff would work just fine. It might look acceptable but the original part, hopefully properly heat treated, got twisted off there’s no way this part will last any longer than it takes to let out the clutch on any kind of a load. Ingenuity- A+, feasibility- F-.

[@georgegonzalez2476]

At Boeing they had mechanical engineers that could predict how long a tail spar would last, in hours. They said 13,000 hours. The spar gave way at 13,334 hours. So you see, stress and life analysis is a pretty exact science. Just going on general principles I suspect this shaft will last 50 hours, plus or minus 49.

[@thehulkamaniabrother2.089]

It would last forever if they used it for a paper weight or something lmaooooo!!!😁

[@iwaswrongabouteveryhthing]

It will last 1 hour or 1000 hours depending on the operator

[@thehulkamaniabrother2.089]

@@iwaswrongabouteveryhthingYabbut, ifn it doesn't work at all, you'll be wrong about everything..

[@josephmaslowski4051]

More of a piñata than a pinion. But this guy has some serious Moxie to pull off a repair I would never attempt. Just think what he could achieve with some proper training and better equipment.

[@donbearden1953]

Not just a mechanic. He’s a welder and machinist also or rather know as a jack of all trades!

[@MrRed-cf6gk]

And master of none.

[@kurohikes5857]

Talk about making it happen! Very impressive!

[@hightidelowtide6380]

1 day warranty. This is a crucial part and it's forged for a reason!

[@daveevans1236]

Welding this back together, what a joke!

[@ahmedabdelrahman829]

😂😂😂

[@JC-vf6ck]

Well as a Machinist with 32 years experience in jobbing/repair shops. Thee is a lot I will say about the repair. First I have done the same thing myself for a farmer. No guarantee was given and the part never came back it works in light duty low speed apps would not do it for a highway truck ever. A steal rest should have been used first when the small dia bearing seat was chucked on the spiral bevel gear. He should have used a 4 jaw chuck with brass plates so as to not damage the bearing seat. They he should have repaired his steady rest as the rest was too sloppy for an accurate Job. I also would not have used the church wrench to hit the seal seay on the gear end a definite no no should have used a branch or better yet copper drift. to get it to run true. I would not have welded on the bevel gear at all. so as to build ups a know to machine for alignment. I have done they s before and drilled and reamed both end. As reamer go over a bit notice how much deflection was in the drilled part the drill was way overside and definitely a tapered hole. He needed more weld prep on gear side where spline washed out there lots of room for weld. you can't get 100 % weld penetration but you could possibly get 90-95 % but Wirth this guys welding there was no preheat should have been roughly 350 OF before welding and let it soak a bit. you need to weld this with a dial indoor as the weld shrinks when it cools and pulls the part. Having said the no quenching just peening or a centre punch with a hammer. I would have also used a dead centre. My thought for what's it is work but his repair won't last long. My rod selection would be 11018 X 1/8 Dia.Lots of needle scaling and wire wheel between passes to minimize porosity and weld inclusions. My thoughts for what's its work. I love the trade but got tired or working with potheads and being disrespected. Thats why I gave boss (Manager)1 days notice. 8 Days later he was fired when head office asked where I went. Now he's running a lathe in oily coveralls Justice served. Im happy!

[@CLCustom1911]

No OSHA? NO PROBLEM! Excellent work! Don't know how long that repair will last, but that's definitely one way to do it.

[@davidpieratt]

Using a ruler to measure nice. I like how you bent the ruler on final check. I haven't used a ruler since grade school.

[@Antony_Jenner]

which Ruler did you use? The Queen of England! or did you use a rule?🤣🤣

[@marlspieker]

Great result. I hope it was well enough to last for some days. 😀 Even if it is a good repair there's still the question if it will be strong enough to stand the torsion power in future. Perhaps it was a mechanic help to get the bus moved in a better garage to repair it there with proper parts. By the way... the audio track sounds like the Minions were discussing in the background! Yery funny! 😀

[@RailFanRob]

Amazing machine work 👍👍

[@user-li4ih2eb2n]

GOOD WORK 👍🙏

[@TheCreedBratton]

The most imprrssive things to me were actually machining that shaft with carbide, welding with no sleeves, not using indicators, not preheating and slow cooling the shaft when welding, or getting it re-heat treated. I hope it holds because all things considered i am impressed

[@ryanvv9349]

That was definitely HSS for machining.

[@norml.hugh-mann]

Of course it won't hold

[@burtvincent1278]

I worked in the engineering department for a company that manufactures drive train components. I don't know where to start on listing the problems with this type of repair.

[@ronaldleedham4719]

Its a back country fix that goes against all machining conventions. But hey, it gets you out of a tough spot. Just praying it gets me the next big city!

[@mlez7197]

Wow ...inspiring 👏👏👏👍👍👍

[@maplenerd1]

If the guy was was lookin for a more secure fix he would have JB welded it.

[@thinkingmonkey8083]

Given that welds are superb for tensile (pulling) forces and horrible for shearing (twisting) force, which is exactly the type of force applied to this part when in use, this repair will be lucky if it lasts for a single day. For example, if you welded a big bolt together like this it would take many, many tons of force to pull it apart yet clamp it in a vise and twist it with a pipe wrench and you can snap the weld right in half like it was nothing.

[@HIMCULES]

Given that the original breakdown of the part was probably a fatigue failure, is the shearing failure likely to happen because the new material's crystal lattice is not "aligned" as a forged part's would be, or something else?

[@abnerriverareyes1452]

@@HIMCULES hes saying any twisting force will cause an immediate failure. I believe this is connecting to a transmission. I think it's time for a new part as well. But, these people may not have the option. At the end of the day the guy basically 1 shotted the entire project. The welding material is stronger than forged steel so it may work... But, according to theory it won't or shouldn't.

[@richardmaurer9002]

They weld driveshafts together all the time... that’s a twisting force, isn’t it?

[@abnerriverareyes1452]

@@richardmaurer9002 I've just gotten into welding myself but, I know what you are talking about. For example if the transmission is longer than OEM they cut the driveshaft down to fit.

[@David-uu1oj]

Given these guys have done this numerous times, and are third world survivors, I'm going with the repair will hold within the splined housing. Great ingenuity period.💪👍

[@alwarisworkshop3801]

Good work

[@Tirra227]

Replacement is the way to go. But this mechanic loves what he's doing that gives him a challenge and he enjoys it that's why he does it. And of course he's probably in love with his shop and his machinery and it gives him a purpose in life. And he has over 2 million views you can't beat that.

[@QuantumLeap83]

The only thing I would have done differently if doing this repair with these resources, is to bevel both pieces when facing off in the lathe so theres more opportunity for penetration when welding. It would require more filler but would also give more opportunity for keeping the weld clean between passes.

[@patrickpowers5995]

Or (or and/or) to drill and thread both sides and screw the two part together before welding?

[@knowldedge5012]

yes, true, and have more surface area. Also the heat treatment should have been done but I assume that is too much for this kinds of repairs

[@lawnseed1500]

Yes. Taper back further and build up a small uphill style weld with a mig. You'd have more metal contact with the weld and a more flexible type of weld. Also a couple of little grooves in your tapered points would give you more 'twistability' torque-ability. There's no problem with bending just twisting

[@PeckhamHall]

What a mess.!

[@galupas]

Great Job 👌👌

[@montesamapping]

Great job, but I agree with others about the overall strength of that repair...BUT may be it can be really useful to reach an official dealer in some big town not so close to that place having care not to stress too much the transmission. In that case in 1h you can go to a better place where to wait some days to get original spare part (or a better one, since it has broken! ).

[@nairobi203]

This is India...

[@yamahjett]

I would love to see follow up videos of how these repairs really due when put back in service. Parts like that are meant to be scrapped when broken.

[@willielongbotham7156]

Guaranteed a lifetime, or two weeks, whichever comes soonest!....

[@leekress9209]

I think from his location, a new part would take awhile to be received.

[@willielongbotham7156]

@@leekress9209 They stopped making spare parts for that particular model just after WW2.

[@leekress9209]

@@willielongbotham7156 there ya go an even bigger problem solved, for however long

[@godbluffvdgg]

It broke when they wrapped it in bubble wrap...:)

[@Loulovesspeed]

Back when I worked in the property-casualty insurance business, I visited a former GM axle plant and saw the largest drop forge I had ever seen, used to make the pinion gear for the differential. I believe I was told it was a 5000 ton - (10 million pound) drop forge, and when operating it could be both heard and felt through the ground for some incredible distances. A 2 1/2" or so hardened steel rod was heated up white hot then slammed by the forge to form a conical end on it. The teeth of the gear were then ground out to form a finished pinion gear. I wish it had been operational when I was there, but sadly it was not.

[@jayadijaya8549]

Nnti

[@jacqueslefave4296]

Shut down and outsourced to our future opponents in WWIII, when Chyna expands it's empire for Leibensraum, thanks to the Wall Street greed monsters, Jamie Dimond and Larry (the 🐀 rat Fink) for selling them out industrial base on the sweat equity of Chynese slaves getting a bowl of rice a day. Now the Black rock Free traitors are selling them our farmland for our future serf laborers in the NWO.🙀

[@JP-cy1lw]

One of the most impressive processes I have seen was the drop forging of truck brake drums. On arriving at the works' manager's office about a quarter of a mile from the forges the whole building was shaking with every strike of the forging hammers. On entering the forge building with all safety gear donned it was like entering Hell, with the tough guy operators wearing only boiler suits! The heat was so intense they could not wear anything more. How anyone could do that job astounds me. The manager told us that they were well paid but that most of them also had tough backgrounds before this job. My greatest respect goes out to these people who keep the present day wokies cuddled in their cotton wool and away with the fairies.

[@JP-cy1lw]

See: 'Fireballs - Drop Forging' here on KZbin.

[@ct1762]

@@JP-cy1lw back then the owners manual told you how to adjust the valves. now they need a warning sticker to tell the WOKE crowd "do not attempt to drink the battery acid".

[@vanatic22]

This is what they do in places where they don't have a dozen spare parts distributors around. I've seen things like this done firsthand. I traveled internationally for 12 years as a service manager for a major appliance manufacturer. For example, in several Middle Eastern countries back in the 1980's, I watched guys in a shop cut open refrigerator and air conditioning compressors, pull motors out, rewind them, put the compressor back together, weld the shell, install the repaired compressor, vacuum and recharge the system and the damn things worked! In the Western world we think everything needs to be engineered to the nth degree and perfectly spotless to work, but these folks figure out how to fix things and make them work when there's no other alternative. Necessity is the mother of invention and tenacity in repair!

[@greatgood5321]

Best' recondition automobile mechanics in Pakistan.

[@tcmits3699]

Hopefully ordered a new ring and pinion shaft before taking on this project, so when it fails he'll have the correct parts to do it right. I'll give him an "A" for effort final grade to be determined. If this was an obsolete part, it probably would have been better to bore a approximately 1" dia hole 1" deep on both shafts press in 1"+ by 2"long dowel for strength and alignment then groove "v" for welding, final machining probably wouldn't need that poor "Unsteady Rest"

[@user-dx4ek7tk7q]

this is not Europe for you, kid, in India people survive and do not live. 😉

[@rotemtomhagbi1937]

@@user-dx4ek7tk7q its Pakistan but yeah this isn't a first world craftsmanship

[@Altair885]

@@rotemtomhagbi1937 who gives a shi#t, it works! And will probably continue to work for many years. Job done!

[@jimmygrant424]

@@Altair885 just what I love to see a someone who appreciates what it is. a job well done!!

[@johndobbie528]

Agreed, I expected a double counterbore and heavy pin to centre and strengthen joint. Lathe could have been used in shaper mode to form splines instead of hacking away with hand held grinder. Oh well I hope it runs for a week or two.