A Mechanic Repaired the Broken Pinion, Which is very Difficult to Repair | Give your Opinion
ฝัง
- เผยแพร่เมื่อ 17 ต.ค. 2024
- A Mechanic Repaired the Broken Pinion, Which is very Difficult to Repair | Give your Opinion
#repairingpinion
#Brokenpinion
#restorationpinion
#difficultrepair
#pkprocess
![[Gegagedigedagedago] NEW Help Gegagedigedagedago Nugget escape from Nikocado Avocado Challenge](http://i.ytimg.com/vi/hJWnwRC2Fz8/mqdefault.jpg)
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..........
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.
If you're too poor to properly clean out the area to be welded, your work will always be poor....
Mark Jones...
Over there in the ass-end of Uzbekistan you would be the fix everything guy.
Actually, so would I...
@@neilcook4710
He did. He really did.. Practically without tools too. Imagine his elation when he drove back to civilization.
Throwing it on the floor is quality control testing.
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.
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.
@@Twizter68 bet that’s his favorite customer
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.
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.
@@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!
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.
Big words
Can make the world
Feel
Small
But.. u simply do not
Know
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.
Spot On Plinker, but they have to Gamble... they have no choice, we know that, One day they'll Catch the West Up! regards.
Does it require hardening?
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
This is a fine example of doing the best you can with what you have.
"Well done"
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
@@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.
@Case Roberts
Hahaha, great comment!
I like the way the trucks are painted in rainbow colors and that the employees are allowed to wear dresses.🌈
ceaseroberts is correct
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
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.
Love it. I consider these videos educational and I'm quite impressed at how what they can accomplish with such rudimentary tools.
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.
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
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.
@@mortanicus5871 A milling machine is not a “rudimentary tool”. Wtf
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.
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. 😂😂
@@minchy83 far from all people, very far. I know more that wouldnt be able to do this than i do that would.
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!
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
@@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.
I appreciate the ingenuity and effort here, regardless of how long the repair lasts.
@@labrikorn_3299 Do'nt be so cinical, they have to Gamble! wrightly or wrongly.
SPOT ON ERICK! one day they'll catch the West Up, regards.
@@labrikorn_3299 Labrikorn _
2 subscribers
Hats off to hard working skilled people in Pakistan 🇵🇰 rebuild anything and everything brilliant 👏 👌
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.
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
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!
@@justincace5517 U can't friction weld it because the break is at an angle. U guys R retarded =))
@@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
@@Deathrape2001 look everyone on the internet! This guy said gear metal! LOL gear metal lmfao...
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.
Considering his limited resources, I think that he did extraordinarily good work with very limited resources. Well done, good and faithful workman.👍💪🙂
Really 😂🤣
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
Do you think he had limited resources? 😅
@@bluebear4909 That lathe! OMG!
What was limited? You're not going to tell me he should have used wire. Are you?
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(?)
You work with what you have to get the job done, awesome patch up with limited tools and parts 🙏🙏🙏👍👍👍👍👍👍👍👍👍😍😍👍
I've been a manual machinist for 30 years. And I gotta give these guys some credit. Definitely crude, but they got something done 👍🏻
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.
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
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?
@@dmusket240 ...well, "ya can't please EVERYBODY!!!!"
IF YA DON'T LIKE IT- THEN YA DON'T HAVE TO EAT IT-!!!!
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.
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. 😠😡😎
Жаль, что оператор не показал на сколько метров от мастерской отъехал грузовик после такого "ремонта". ))
У меня чуть кровь с глаз не пошла. Эпать они специалисты
@Артур Долгий А мне не очень. Такие станки прямо с конвейера надо в металлолом отправлять.
@Артур Долгий а когда каленую железяку тупым резцом? Там уже нечего жалеть- эти станки у них со времён британской колонизации работают.
@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.
@Артур Долгий Вы тоже заметили какая жёсткость у станка))) ... и что за резец мастер использует))))
Customer- it broke again soon as I let the clutch out
yep same spot dam .
You're giving them too much credit. I think it will break when they try to tighten the nut .
@@klauswunderlich6169 yep just the sideways preasure from the monkey wrench on the yoke ha ha .
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 !
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!
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.
What do you mean no charge.
Just give away the infinite time
Yup! Gorgeous work boys! You can tell by how it's tossed on the floor at the end, LOL!
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.
@@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.
@@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.
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!
It will fail when you turn on the car. Welding hardened metal without preheating and release will not take you far.
@@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%.
Your warranty is to the end of the parking lot.
you do the best you can with what you got, but it would be a miracle if this repair holds together.
Absolutely an amazing repair, if you only drive down steep hills and never try driving up any.
nojunk work
This channel doesn't have any content
I'm a machinist and him machining that hard shaft was like fingernails down a chalkboard.
You can hear the file gliding over it. I agree lol
Earthing the welder through the lathe's headstock bearings did it for me ....
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.
Amazing video on how not to do things correctly! But also amazing how Indian people are so creative and adaptive!
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.
MADE A GOOD JOB SUCH A GOOD TRADESMAN WITH LIMITED EQUIPMENT .WELL DONE
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.
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.
M998i899o8
I absolutely agree.
I agree,of course
That lathe is already worn out , Might be the beater lathe
My initial thought was the same
Good job. They’re getting on with it just playing the hand they’re dealt
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.
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 😬
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' =)
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 "
@@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
@@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
Good to see this shop is working up to osha standards
The UK 🇬🇧 needs peaple like this 👍
Way beyond insanity ! Not a chance dude !
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.
Don't worry the life it's self is dangerous everyday 👍🏼👍🏼👍🏼
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.
The biggest question is why? The labor is would be equal to, or greater than a new gearset (with a warranty)
I see these video titles and immediately click on the comments. "Repairing" a pinion. Pure comedy.
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.’
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.
Ever been to the Ozarks?
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.
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!
B
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.
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?
A waste of time.
steel-toed safety sandals, nice...
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.
Нужно проваривать с самого корня, а не по поверхности. Это просто красивая игрушка. Выбросите не тратьте время.
А середина вроде не работает
I love the hand grinder spline operation! Glad it's not my truck!
Amigos obrigado me sinto feliz assistindo uma aula de reparo. Que maravilha parabéns
that was, indeed, cool. BUT - I doubt the rod metal xferred to the shaft has the same strength as the pinion assy. Anyone have a stopwatch to see how long she lasts??
As a wise owl once told me “You gotta do with whatcha got” and he did just that. Props to him for getting it done the best they could.
One solution would be to spread the load that broke that beautiful pinion pineapple
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.
which Ruler did you use? The Queen of England! or did you use a rule?🤣🤣
I especially like the precision angle grinder…lol. Unless that’s heat treated it’ll snap immediately under load.
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.
Impressive work, thanks for sharing
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.
Or (or and/or) to drill and thread both sides and screw the two part together before welding?
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
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
Gotta love the close tolerance angle grinder! Awesome effort and very entertaining!
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.
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?
@@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.
They weld driveshafts together all the time... that’s a twisting force, isn’t it?
@@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.
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.💪👍
He could have saved time and super glued it back together. It would last as long...
It will fail again. Pinions are forged and heat treated after machining. Welding has not been properly carburized and drawn to match the surrounding steel strength. It may look “fixed” but I assure you this will not last.
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.
A highly skilled machinist who sprayed grinding sparks all into his chuck and wherever else.....
@@davidgayford I think you missed the point.
@@randmayfield5695 I think you missed the point.." highly trained machinist "....
@@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.
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
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! 😀
Весь ролик ждал болгарку - и о чудо дождался
Весь ролик ждал ЧП в горах Пакистана, автобус в пропасть и всё такое. Видимо пока ходит.
Когда он токарить начал у меня кровь из глаз потекла. У них видимо один токарный станок с одним резьбовым резцом на всю деревню.
Excellent Skill
Thanks For Sharing
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!!
It just won't last. Maybe around town but the first torque situation it will fail
Trabalho espetacular muito profissional parabéns você é muito profissional 🇦🇫👍👍👍
Any pre or post heat treatment to relieve weld stresses and restore tempering???
He relieved all the stresses by tapping on it with a punch, are you blind? ;) :D
@@HuFlungDung2 I love your sarcasm.lol
And risk warping the part? Lol
How much is a new one or is it that it can’t be replaced, the repair looks fantastic but will it last v all the effort put in?
Hi thre! Would you be so kind to let me know what rod is used for the repair. I will appreciate your response.
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
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.
@@adalila8466 tell me your privileged without telling me😂
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
My shaft also hardens and suffers from thermal loads when being handled.
@@RADVIX313 I love how leftist "privilege BS" is thrown around like the cancer they are.
Я конечно все видел в токарных работах,но чтобы на таких оборотах обробатывали закалённый метал впервые вижу )))
Вал не закаленный , поверхность цементированная .
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.
Agreed 👍 brother too much stress on the metal!🤨🤔🤯🤨🤔🤔
I doubt there will be an update if that happens
No OSHA? NO PROBLEM! Excellent work! Don't know how long that repair will last, but that's definitely one way to do it.
I appreciate his work what if you dont have a lathe machine and it needs to be done ASAP and installed.
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"
this is not Europe for you, kid, in India people survive and do not live. 😉
@@иваниванов-н9к3б its Pakistan but yeah this isn't a first world craftsmanship
@@rotemtomhagbi1937 who gives a shi#t, it works! And will probably continue to work for many years. Job done!
@@Altair885 just what I love to see a someone who appreciates what it is. a job well done!!
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.
I want to ask this video uploader to tell us how long this repair lasted.
A good hour, and then it was installed.😂
If the guy was was lookin for a more secure fix he would have JB welded it.
Good job"" but, I would have covered, (protected) those threads Before welding on it first. Great job with what you had!
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.
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.
It would last forever if they used it for a paper weight or something lmaooooo!!!😁
It will last 1 hour or 1000 hours depending on the operator
@@iwaswrongabouteveryhthingYabbut, ifn it doesn't work at all, you'll be wrong about everything..
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.
А я ещё думал, чем они шлицевую часть восстанавливать будут....
По поводу восстановления не совсем уверен что этот узел сможет держать нагрузку.
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
That was definitely HSS for machining.
Of course it won't hold
Talk about making it happen! Very impressive!
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.
I'm amazed it survived being dropped on the floor at the end.
Me too LMFAO!
1 day warranty. This is a crucial part and it's forged for a reason!
It looks good to me. The sort of thing I might do. The sort of thing I used to do. It will last for years.
Excellent job ,mechnic very skilled
Interesting and creative approach for the case when the replacement part cannot be obtained. However, potential damage to the lathe bearings due to passing welding currents through the lathe frame to the parts. Better to have made a colder repair by facing off the broken pieces, boring out each half and inserting a plug with clearance (0.001 to 0.002 in) for brazing. When brazing the plug and subsequent remaining faces of the two parts, brazing temps far lower than electro weld, should minimize degrading heat treated pieces. Also, brazing being a flame process, will not risk damaging the lathe bearings or gear tooth surfaces. Note that parts must be oil-free from the start. Try trisodium phoshphate in hot water bath.
donmago
2 subscribers
As a pipe weldor my self, the groove/opening where the mechanic "welded" the two pieces together...was way way to narrow. There would be all kinds of slag entrapment due to such a narrow "groove". He made an unsound nonductile weld.
We here have the ASME specify a joints requirements. Each part will be grinded to 30 degs with a grinder so the "groove" gives the room needed so a sound & ductile weld can be made.
This is why all the millions of pipe welds hold up to heat & pressure with nary any trouble.
I would not trust the repair "weld" in this vid for 5 miles.
Yet they make repairs such as this on a regular basis. I've seen crankshafts welded back together, con rods, cylinder sleeves, gear teeth, transmission shafts etc etc. All done in back street workshops such as this, and for the most part the repairs have been successful and put the vehicles back into operation. Maybe in certain cases the components don't last as long as replacing with new, but making a repair is a substantially cheaper option, and often quicker than sourcing a replacement.
@@Altair885 maybe they have been put back into operation but repairs like this are no more than a temporary fix until you get a new part
@@paulhancock3844 I wouldn't bet on that! 😁
@@Altair885 or another repair, but it ain't going to last. If a drop forged part has broken,using welding to repair it will always make that part weaker, always. Even if it isn't drop forged, the shaft will loose it's strength by many means, loss of grain structure, localised heating, the weld material is probably just basic steel,E70/70 and not the same grade as the parent. In short it's a temporary fix
@@paulhancock3844 Maybe, but don't forget that part is pretty old going off the looks of the vehicles they seem to be working on, if it's one of those trucks it's the best part of 30 years or more. That's a long time for stress to develop the fracture that caused it to fail, and as the material immediately around the stress zone has been removed and replaced with fresh metal I think it'll be a while before it goes again. But sure it might not last as long as an original, but that hardly matters given how much the repair will likely of cost the owner! And it'll probably see that truck out to the end of its working life anyway.
Most horrifing part to me as a machinist, is mostly the welding ON the lathe. So many parts of doing that damages the lathes in many many ways.
I'm no machinist or fabricator by any extent, only taking 4 years of metal shop in highschool and I cringed so hard when they did that, a lathe is a precision tool lol in my brain I thought hey these dudes have a lathe, they might also have a old school mill but then homie busted out the angle grinder to finish it out and about laughed lol
Genial; no tienen comparación Heroes de la reparación y restauracion. Saludos desde Buenos Aires. Argentina.
Can it be used for a long time?
If it lasted a week then it worked I'd say lol. Till the replacement part arrived/sourced.
What would they charge for this fix? and it being done I assume without future consequences of failure.
What would those guys earn for that fine work. I bet they are an important family buisness in their community.
Like the precision spline cut with the grinder :-). Maybe the speed of the lathe was a bit too much for the poor HSS tool just to impress the camera man when making orange chips. The grounding welding clamp was move far away from the spline shaft during the rod welding , so what was left of the lathe bearings can be toasted by arch currents.
You are so right on every comment you made. Lathe was way too fast. He "toasted" the spindle bearings in the lathe by welding. Then, they should have preheated and post heated the pinion. I would then pack the pinion in vermiculite or sand for it to slow cool overnight. The welding precipitated carbon and more into the heat affected zone. He now has untempered Martensite (it is a very hard form of steel crystalline structure). Martensite will sit and crack on it's own. Post heat and slow cool would help. 2 or 3 days and it will break again.
@@texancowboy9988 the lathe was running slower than appears in the video. They sped up in editing to make it look impressive. But I agree with everything else you said.
this repair job took 1000 times longer than the repair will last.
Where some of these people live you have to make do with what you have.
@@blastermaster2383 exactly
I see a lot of comments written by trained mechanics who say that this repair was unprofessional. And they may right, but they’ve never lived in a world where things have to be jury-rigged everyday.
People in America are used to ordering expensive replacement parts whenever they want. In the future, those mechanics will have to learn how to use spit and chicken wire. There’s a new Motto: “It’ll probably hold”.
So if that is a country that does not have parts and things like that. Then how many people do you know that own a lathe. They are not widely owned. And not many people know how to use one either. So if they have a lathe then there are parts available even if you have to order them.
@@anthonycash4609
My intent was to explain that Americans have been enjoying a very good life for the last fifty years, because we’ve borrowed so much money. But we can’t borrow money any more. So our lifestyle will have to change; which means repairing things, instead of throwing them away. The people in this video repaired the driveshaft because a new one would have been too expensive. We will soon be in the same position.
Therefore our boys should be well-trained in welding, cutting, basic electronics, and carpentry. They will have to become experts in repair. The Mexicans aren’t supposed to be in America, so when they leave only white men will be available to do the work.
@@anthonycash4609 Old used lathes are quite cheap, and if you put a bit of time into them the can be made very serviceable.
Having a lathe doesn't mean parts can be bought..... notice the shop made carbide tipped tools..... they manage with what they have in places like that.
@@KathrynLiz1 not sure where your from but apparently you don't know that much about lathes. One the size in the video is not cheep . And not relatively available in third world countries.
@@ronliebermann go back and look at the video. There is NO DRIVE SHAFT IN IT. he is welding a pinion shaft that goes in the rear end of a truck. Coming from 40 plus years in the mechanic field this repair will not work. And if they are able to post you tube videos then they are able to order parts from anywhere in the world.
It certainly looks good 👍
Good for 80% less torque at 50% original shaft speed. Some would say 30 seconds or 30 feet whatever comes first but honestly I don't give it that long
In most countries REUSE , RECYLE is a modern idea. For these guys it has always been part of life without making a song and dance about it. The non-throw away society. Well done.
Yeah, that lives in abject poverty.
Yea... that's there life already.... except al the shit they throw in rivers and end up on other country shores. Yes masters in recycling.