The Ingenious guy Connected Broken Input-shaft Very Nicely / Pk process #brokeninputshaft #ingeniousman #pkprocess The top gear which was broke due to overload was very well attached
This guy is a genius, he found some broken part "fixed" it and probably threw it straight in the scrap bin when it was done, but he got 7.5 million of us to watch the video and banked the cash😂
As a lifelong welder, that ran a fabrication and repair shop for 45 years, about the first time he accelerates, that thing will go pow, right next to the weld! There are some thing’s that shouldn’t be welded, and that is one of them. Like Clint Eastwood said, “A man has to know his limitations “! 😂🤣😂
@@rafars2246 completely agree with you. Here in America we believe new is the only viable option. In many countries they have to make do with what they have and I feel the time spent on doing this job shows that it will last.
@@acetech9237 that was a full melt job, compressing the area, that "weld" is stronger than the rest of the piece. And they do it for a reason, because it works for many more years to come.
Don't know how reliable the finished product will be, but I do admire the can-do attitude and the work involved especially in the conditions available.
As one who is skilled both as a machinist and welding, I am impressed at what this man was able to accomplish with bare bones tooling. Being able to center that shaft in a four-jaw chick with no dial indicator is admirable. He is making do with what he has. The only doubt I have is whether or not that repair is going to hold up. I wonder if he had the ground clamp on the tailstock? You wouldn't want it on headstock with current running through the bearings. That's the kiss of death for any bearing.
As a machinist, I too was impressed by his use of a 4 jaw chuck. His carbide cutter was under-center, leaving a nub. I had to laugh when he tried to drill into it. He cut the video there but I'm sure he had to put a center drill in to keep the drill from walking. Waste of time to try that without it. And many guys don't use lubrication in their cutting tools but damn it irritates me to see that. A bit of oil would have made the process so much easier
@@jamesofallthings3684I agree with your comment, only someone who knows nothing about being a machinist would be impressed with this. Weld platter and grinding dust all over the bedways. I could go on and on. The worst part of being a machinist is being surrounded by wannabees 8 hrs a day. Thankfully I've retired.
Гениально! Из измерительного инструмента только линейка и ответная деталь. Нарезка шлицов отрезным кругом. Сварка высокого качества. Отсутствие термической обработки. Я в восторге! Надеюсь эта высокотехнологичная деталь будет использоваться в качестве якоря в лодке, а не в трансмиссии.
The premise of the repair is sound however I actually laughed openly when he brought out the zip disc grinder to start cutting the shaft grooves. Necessity is indeed the mother of invention. We can laugh all we want, but if it works it isn't a fail.
В этом видео прекрасно все. И резьбовой резец по всем операциям, особенно центровка сверла, и капли расплавленного металла от сварки в подшипник в купе с отходами болгарки, и работа машинкой по пазам. Спасибо вам Биба и Боба, вы сделали мой день.
Nice ste up, gear in 4 jaw. Nice ground through ur lathe bearings. No concerns for spatter or lathe bed if ur ground through the dam thing. Mighty soft shaft for that drill to go in so easy. That input bearing has nothing to do w failure. Precision cut splines. No run out. Man I love these videos, makes me feel like I can mig steel to alum!!!
I thought the same thing about how easily the drill went in. The shaft appears to be cast, and given this overall operation, it's probably cast from grab-bag metals.
Shafts are usually induction surface hardened (or flame hardened, back in the olden days), so it's not too crazy for the center to still be machinable.
Reminds me of back home! All parts are at least 80 miles away and some are hard to get. We have to 'temporarily fix ' stuff just to get the equipment back home. It's amazing what you can fix with a little ingenuity. Parts only temporarily as no heat treat, welding through the bearings, metal grinding particles in to bearings, ect. Only temporarily.
The guy can’t go to Kwik fit for a factory replacement…we could teach him a few things about practices ,but he could teach us a load about real engineering..
@@griswald7156 That's the thing. Americans think that they own the crown when it comes to innovation when in fact, most of America's most ingenious inventions were created by immigrants.
@@griswald7156 I don't know about that. I realize he's doing the best he can with what he has, but that repair simply isn't going to hold up. Plenty of shops here could do that, they just don't bother because they know it won't hold.
Depends on the parent material and the material used to weld. Also, he might add a post weld heat-treatment -probably not going to be done, though (Joining Technologies).
@@SealofPerfection It also depends on the application. No, it wouldn't hold up in my muscle car with 450 foot pounds of torque but for a little old lady going to the grocery store once a week, she's probably good for the rest of her life.
Under those primitive working conditions, I give the man lots of credit. He's taking care of business and not sitting on a street corner begging like some bum. Hats off to the man.
I congratulate you for this work, and I don't think that after welding the shaft you are going to throw it straight into the trash. I am currently older and retired, but in my youth in my country, Spain, for many years I have been an assistant on a lathe-operator, and we have done the same welding many times, of an output shaft of the engine flywheel towards the clutch or of a front or rear shaft of a four-wheel drive, previously making a centering bit and then it works perfectly !! congratulations for the fantastic manual work
I hear this guy's been picked up by a major Golf Club company. Because the second this shaft is put under a load, all you'll hear is a LOUD "PING!" Though I must say, the Krylon rattle can tempering was a nice touch.
If if were better welded and with ER312 it will probably hold. Probably will have a sticky clutch due to low hardness of the weld. But with this amount of porosity .. meh
I see a lot of comments about the grinder grit getting in that input bearing. That bearing is Toast already, notice the rollers are rough and unevenly spaced and the roller cage is totally gone. The thrashed bearing was likely the cause of the snapped input shaft in the first place. If its not replaced there is Zero hope for the spline repair.
Did you also notice the condition of the nose of the shaft? The flywheel bushing isn't going to survive very long, either. At the very least, it's going to squeal like a tortured pig when the clutch is in. But it also won't keep the friction disk centered. Once the friction disk starts going off center, it's going to stress that shaft again.
Many of you guys commenting here just dont get how things work in the developing world, yes the gear shaft will almost certainly break once again though not before they cover a good amount of miles and when it does break they will machine and join it all over again. These guys have been doing these kinds of repairs for decades and are experts in their craft. Buying a new shaft would definitely cost a lot of money so the best option is to continue down this route until the shaft is basically all worn out and cant be machined any more.
I am always impressed with someone who does the best they can with what they have this guy is by any sense the word is a genius and a very creative problem solver. It reminds me of a time when I was a little boy growing up on the ranch and my grandfather would fix things that most people would have just thrown away or repurchased. Even though my grandfather had money he did not waste it. This is a perfect example of why this country is failing and the rest of the world is doing good we can't do anything for ourselves anymore. Most young people if you ask them how about having hamburgers for dinner they would order them on Uber eats.
@FullAuto Agree with you for most, but your country (I suppose you meant the USA) is not failing because people aren't creative, throw away reparable things or outrageously consume. China is very successful now and the mid class (up to the upper class) Chinese does consume a lot and discard what doesn't work or is broken. The reason the USA is potentially failing is far more complicated, and partially has a lot to do with... precisely, China. Not in the sense that China is directly responsible for the USA to fail, but rather the USA (politics, industries) has been IRresponsible for using China as their manufacture plant, and letting China go away with IP theft (including theft of military equipments). Americans (and to a lesser extent, citizens from many other countries), have been (ignorantly?) paying China so it can rule half of the world and manufacture weapons that could lead to their destruction.
I welded an axel on a Terex Rock Truck , not expecting iy to last that long .I was told to anneal the axel overnight , in a large tube of kitty-litter . or floor dry . It was still cooling in the morning . I thought it would be too soft . I marked it with reference lines . No twisting ,and its still good after 2 years . The break was caused by the dump box rolling over . I welded it with XC 223 Arc Tech . The only thing Id have done different on this guy's job , would have been , to get a similar spline maindrive section , and do the joint away from the splines .
Nice shiny paint job ... Now sell it 'as good as new' to some sucker. Love the grinder's abrasive dust and removed steel fragments shooting into the bearing!
GROAN! All that grit on that lathe! In the headstock. In the chuck! I hope they used something other than 7018 or 6013 to weld. That deposits mild steel. Shafts and gears are hardened for a reason. The welding changes the heat treat of the adjacent steel. If it's a typical trucker, he'll go out and load up his truck with as much as it will hold. SNAP. Broken again. Oh, bad luck.
I don’t know anything much about welding , my brother did it for a life time, I did a bit in high school and caught my pants on fire and that was it for me .
I agree with you - no respect for the lathe, with carborundum dust everywhere! He didn't need to use an Angle Grinder at all, simply turn the Lathe Tool on its' side, then use the saddle of the lathe to cut a perfect spline. And the repair will never have the strength of a new Unit. But it keeps the Truck working, and earning.
I can't imagine that this repair will last very long. Like other comments have said, when the shaft is under torque and being a hardened steel held together with a softer steel weld doesn't spell out long term success here. Normally this type of fix is most suited to tie the job over till a more proper replacement part is found. Just go easy on the torque in the meantime.
It appears to be a successful repair but the question is how long will it last. The original shaft which is designed to take excessive amounts of torque and then now a weak spot has been created. No hardening is a major problem. It looks acceptable though.
@@hectorguzman28 "Obviously"? Not so much. We've seen these guys do really cheap things like reusing transmission oil, smoothing heads with a rock, making really porous welds, making little tack welds, drilling holes freehand, getting sand into everything, and tossing parts down onto the ground. It's not obvious that they're going to fix the bearing.
I would love to know how this shaft was broken, in over 50 years working as an auto engineer I have never seen a primary shaft with such damage. I can see that the bearing cage was missing so the shaft wasn't supported correctly but has anyone else come across this?. I love the run out on the repaired shaft, if it was fitted to a vehicle it would probably shake the transmission to bits if of course you could overcome the clutch bind. How can anyone say this is good engineering???
"...I have never seen a primary shaft with such damage" It happens frequently to people who drag race their cars. Sticky tires, sticky track, and a (stock) standard transmission is all it takes!
@@dirkk.6573 To give the impression that the part is newer and that it wasn't as badly damaged at it seems. This is not fixing stuff, this is dangerous as fuck.
Looks like the bearing on the input shaft is missing a few rollers. Wonder where the ground path is through for the welder? Must be just great for the bearing to have all the grinder filings to be flung at it. I've never heard of an input shaft breaking like that before.
The best mickey mouse repair job I have ever seen. This repair is much better than the chewing gum & duct tape repair. The shaft is rendered destroyed and useless the moment it broke regardless of the repair afford.
I have done a similar repair to a transfer case output gear shaft, a one piece forging . The difference was that my repair was in a non-splined section of the shaft. After welding we heated the whole shaft with a torch to a red heat then let it cool slowly in dry sand. Next day machined it to dimension then heated it to red heat again, and oil quenched it. Very hard at this point. Heated it in a propane oven to a purple color and let is air cool Reinstalled and ran the vehicle for 200,000 miles with never a problem. The original break that I repaired was unexplained. Happened inside the T-case. Guess it was a defective part.
Pakistan ... i dont think this was the first time he had seen that particular individual part ... its probably been done and redone ... and re redone ...
You're absolutely correct. That's not what you watched here though. This should not have been "fixed" and will fail again almost immediately. A good engineer and mechanic should know when to say no.
I agree, and do give them credit for that. They have to come up with ideas to fix gear, with only basic tools and equipment, and I'd guess a serious lack of knowledge/training. Would we do as good ??
I need to know how it fairs in the test of the uncompromising reality, There's no point in all of that no matter how neat and innovative the process is if it snaps in no time.
So you have managed to destroy the heat treatment on the splines by welding it, then failed to reharden them after welding. I bet this will snap again as soon as you let the clutch out. Next time don't over load your truck with 10 times it's maximum weight. 😂
Im usually really impressed with these type of videos, but this one, wow. I feel sorry for the poor guy who pulled the broken part out, paid this guy to "fix it", and then put it back in only for it to last as long as Rosie O'Donnell's lunch.
Imagine you are somewhere on a Trans Siberian Highway, and your main shaft snaps in half, you have no means of nipping down to a truck dealer less than a 1000 miles away, and then no means to contact them to rush you a new shaft in the middle of somewhere in Trans Siberian Highway, but a local engineering shop with skilled person is able to rescue you so that the cattle live stock you are carrying in your truck don't die of running out of food, and exposed to ice cold weather for longer than necessary, then it is easier to hike a lift to the nearest town with mechanical repair shop, who can weld that shaft in less than half a day and you can then hitch a lift back to your truck and reassemble the gearbox main shaft and get going again, but this time you ensure that you do not overstress the repaired shaft excessively by not going in higher gears, imagine this happens to you on Moon and the rocket snaps a crucial part, so please remember sometimes you do not have luxury of buying a new shaft, that shaft most probably broke due to a defect in the original casting, and most likely the new weld is even stronger than before.
This is artistry at work. Unlike other comments, I don't know why, after carefully constructing this repair, that it wouldn't last in operation. Of course, you've also got to address the reason this steel shaft broke apart in the first place. If it was just a result of an accident/impact, that's one thing. But if it was due to another force acting upon it, yeah, it could break again.
@@AtlantDnepr выточить первичный вал КПП !? Вы далеки от техники. Купить было можно, да. Но, как назло в продаже не было от 01. От 03 были, но там другой первичный вал и блок шестерен. А покупать коробку за 310 рублей, это было дорого. За 300-500 семьей десять дней стоил отдых в Сочи. Коммунизм.
Without knowing the emergency that superseded this attempt it is worth pointing out that a shaft failure like this was caused by an eccentric input shaft bearing that lost it's plastic cage a long time ago. The bearing will bind up and cause a high load spike when it grabs. The pilot bearing stub is worn to the point of offering little or no support to the shaft. I would suspect that the transmission front bearing bore is worn out also. But necessity being the mother of invention one must try and not to try you are defeated
yes, if we look closer we see that 2 or 3 rolling elements (rollers) are missing and it will develop an excentric rotation , i think this was the cause from the begining and instead of fixing the cause he's fixing the result and soon will be the same or worse, but i respect trying to be inventive..🙂Also it is worth mentioning that when he induced to the parts so high temperature with cutting and welding, the parts are much weaker in proximity of that place.
No, no, you see that's the genius of it: The worn out roller bearing helps make up for the trashed pilot bushing, allowing the whole friction disk to wander where it wants to without stressing the shaft. 🤣
I have only 3 conclusions here : 1. his labor cost way less expensive than the piece he is reparing. That's why we wouldn't event think about doing it: unprofitable. 2. if the manufactured part broke at first time...this may not resist long, after partial welding, hazardous coaxiality and home-made tooths. 3. the 1:54 made me scream. ...And of course he did the best he could, with this old school machinery, which is still impressive.
It's entirely possible that a new input shaft isn't even available in Pakistan at all. If the truck is old enough, it may not be available anywhere in the world (and might be an insane price if it were-single transmission gears in my 1960's tractors, IF you can find them NOS at all, are many hundreds of dollars.
Input shafts are very difficult to break. I can't imagine the torque it would take to break one. Unless it was involved in an accident. This is something you would do as a last resort. Also, the tools used here are nearly worn out. It takes a certain amount of skill, just to work with tools like that. It's amazing what people can accomplish when driven by pure necessity.
Difficult to break the first time. Each time it comes back to Abdul’s Plow Works for more oxidized steel, and welding slag inclusions, the torque requirements are lower.
"Been there, done that." It's what you do when you can't get, or can't afford the replacement part. I'll bet it worked fine. Good ole 7018 welding rod.
Be nice to take up a collection and buy him an Electron Beam Welder. Only about 20 million per copy. When Grumman shut down their Bethpage, Long Island main plants--and therefore the F-14 Tomcat Navy fighter production line--a E-Beam welder went for $500 grand! Cheap at twice the price. They used it to weld the wing-box beam structures into the fighters. And then tested wing durability by flexing them to 75 degrees off plane! Never had a failure on those ebeam welded wings--in production test or in carrier service. NICE, NICE MACHINE!
Assuming that the placing and welding were accurate, this is a temporary repair at best. The force that broke the shaft when it was a solid piece of steel will break it much easier when it's welded, and stick welded for that matter
@@astrodax2753 I understand that, I'm referring to their industrious approach and doing the best with what ya got.....and as a poorer Nation their willingness, ingenuity and perseverance should be commended. Here in America we too easily throw out things and are a wasteful society.
@@sanddabz5635 it's true that in poorer countries they make things out of nothing. They definitely recycle the words waist into great things. I still wouldn't recommend playing around with heavy machinery
He's obviously going to press a new bearing on there, and who knows, maybe he tempered the whole shaft after pulling the old bearing off (don't know why he would paint it first though). Hopefully there is a welding rod that can match up with the shaft properties for the tempering process. I didn't like the visible runout of the gear end when it was turning on the lathe. Could that be because of the missing bearing race, when in fact the gear and the shaft are perfectly aligned? I would have at least tried to cover the lathe before blowing all of those grindings everywhere. There is hope for that thing. It doesn't appear that he is unskilled, perfectly incompetent, nor totally oblivious to all of the points made in these comments. Would be keen to see a follow up indicating heat treatment, and evaluation after field use.
That bearing is history anyway - no way it would be used again. Apart from the repair job not lasting very long my concern was where the earth wire for the welder was positioned. It didn't appear to be directly on the shaft so I can only assume it was grounded to the lathe. If that is correct the welding current would have to pass through the lathe shaft bearings and very possibly likely causing damage to them.
I worked in Pakistan in the early two thousands for a defense contractor over extensive periods of time. I was continually amazed at the ingenuity of the Pakistani people.....the shade tree fixes mechanical fixes they came up with were incredible. With that said this won't last ten minutes 😅😅
Good job passing all the current from the welding action right trhrough the bearing (now ruined) of the lathe.... Sending sparks to the bearing on the shaft (will be reused?) demonstrates great skill.
@@Outdoorcookwarereviews Not good machinist technique. He also probably got a good bit of weld spatter in the rollers of the bearing on the shaft he was repairing. A good machinist would have removed the bearing on the shaft prior to this type of repair. In our shop we never welded in our machinery but looking at the condition of that lathe it probably didn't matter anyway.
Сколько смотрю такие видио и всегда удивляюсь этим людям как они работают. Им нужно лозунг написать "Нам не нужно вкусно нам надо много" Они как будто в карты проиграли и дают план в стране угля. Давай давай, быстрей быстрей. Если оторвет руку то ничего её так же быстро пришьют. Спасибо за такие кинушки прикольно смотреть честное слово. Получается как черная комедия
It just kills me everytime when I see them welding on a lathe, without attaching an earth clamp to the part….every bearing on that lathe will soon be toast,like the bearing on this input shaft….🤔
That was my big issue with this repair (besides the chances the shaft would still fail later); all the gunk that would get into the bearing, the missing rollers in the bearing (which might have contributed to the initial failure) and the hot welding slag that would drop onto the ways of the lathe.
Drilling out both ends and tapping them would save on heat generated, a lot less welding. Temper will surely be an issue long term but i will hand it to em…in a pinch with limit tools and no replacement part capability, something broken down will again move. Agree with other comments on the roller bearing and race regarding spatter and spark. Details matter in quality workmanship. But by the same token -- the customer only gets the amount of quality that they pay for.
These are the guys you want when the plane you were on goes down in the desert and the only option is to cut off a wing and set the dual engine plane up as a single engine plane . It don't have to look purdy Flight of the Phoenix .
They bring it in original shape, but the material properties of a shaft or axle are special and I can't believe this will repaired part has the strength it requires.
I wouldn't be placing any bets on a welded up input shaft lasting long against the torque of a big diesel engine. Especially if it was running on a knackered gearbox input bearing. Bearing in mind though that his circumstances are different than in the UK, I'll give him full marks for effort and also for making a good video.
Pakistan and Indian men are the greatest makers and craftsmen in the world. No men do more with less than these good men. HONORS to the makers and repair men. 😊
I see quite a lot of imperfections in the welding, where new crack will form easily. With the paint you can cover all these imperfections, but it won't make the joint stronger. But of course if you have no means to buy a new shaft, reparing is the only solution. I suppose there are no used spareparts available. It is by no means a genious job, because every skilled metal worker can do this.
I'm sure it was an emergency repair of a piece that could not be found for replacing. The man made a valiant effort under the circumstances. Like a field surgeon.
Guess that bearing missing rollers and all that new welding spatter grit in the race doesn't matter all that much since the entire shaft probably sheered again once the clutch engaged.
Would be nice to have an update and take apart of the part so we could see if it is holding up. I think this fix could work if engine power was kept low. Mad Max would be proud!
All that grind spatter in the roller bearing that will be a real pain to get it clean, which I very much doubt will happen. I would question the torque load the repair will take. Notice that the shaft was only centred in the chuck with a pointer that was supported in a stand resting on a flat(?) board, I doubt the shaft was concentric.
Facile criticare, certo che in Europa un lavoro così non lo farebbe nessuno, in quanto non puo' dare garanzie, ma in un paese dove non c'è nulla e' da ammirare la volonta' e la capacità di queste persone che con nulla risolvono il problema, anche se in maniera qualitativamente inferiore ai paesi sviluppati! Questi video li fanno per farci vedere e conoscere la loro arte di arrangiarsi e vivere in un mondo enormemente arretrato rispetto al nostro! Costoro previa adeguata preparazione, se fossero introdotti nel nostro mondo sarebbero degli ottimi operai! Il problema che qua emigrano quelli buoni completamente a nulla, e voglia di fare nulla, che anche con la adeguata preparazione....
Во первых у нас разучились так ремонтировать. И ремонт выйдет на 2 новых вала.Я сорвал шпильку на коллекторе так мне сказали :-такое не делаем. Покупай новый.Пришлось вспоминать былые времена и самому высверливать.
I would think it would have been as easy or easier just to drill a hole in both pieces and put a little pin in. Then weld. In fact, it might be be stronger to bore both ebds out, perhaps a 16th less than the splines maybe 2 or 3 cm deep, and then make a hardened steel pin a few ten thousandths over and freeze it in dry ice and then put it in one end. Then cool the entire assembly and put the other end in. It will never come apart. Thinking about it. 16th is too thin. You want the walls of the hole you bore to be no less than the thickness of the splines. Otherwise the wall will stretch and deform before the spline. So if the shaft major diameter is say 1-3/4" (its probably metric in fact) and the splines are 3/16", then lets assume the minor diameter is 1-3/8. Figure 1/4 wall thickness is a reasonable guess of what you need so the splines don't deform or break off or crack. Then you bore and ream a 7/8 hole and then put a pin a thousandth or three over on dry ice. Then press in place. Then make a jig to hold the thing , chill it down, get it mounted up and indexed correctly and press it together. If you get it right, then the crack will meet up right and then the pin will expand and it will never come apart unless you cut it. If you use a?suitable piece of hardened steel of a suitably strong alloy , it should hold. However, a REAL fix, would be to cop the shaft off the part at the end. Find a hardened steel shaft like maybe an axle shaft with the same splines if you can. If not make one. Then bore the gear end out and shrink your shaft in. That will make a permanent repair. Some people might feel good pining it but if you shrink one part in dry ice, heat the other to 350F in an oven then press them together, they are never coming apart. So long as that pin can handle the torque it will work. The problem i see with the welded repair is two fold. The metal will be annealed in the heat affected zone. Since it broke once when the part was at full strength, it WILL fail now that its softer. 2, I'm concerned that the filler may just be a mild steel. So it's an open question if the weld will fail or the metal adjacent to it in HAZ. (Thats why i suggested that a pin may be better. At least if a 7/8 oin can be made from a sufficiently strong material, its good hardened steel). The best solution as i mentioned, replaces the entire shaft. In that way, the shaft grips the gear at its outside diameter and all of the heat issues are gone because you made or found a new shaft. If your licky, you might even find. Shaft sitting around.
It would be interesting to see some followup after these repairs. There are always comments like this won't last five minutes. But sometimes repairs like this last a long time. Not sure that I would agree this was a hardened shaft, but can't claim any factual knowledge either way. Hope they cleaned the grinder dust out of that bearing.
There is at least 20% of the bearing rollers missing and no grease, that's what caused the failure and it will fail again in seconds. Third world mentality, don't bother greasing the bearings in the first place then buy welding rods to fix it which are more expensive than grease.
@@maff2008 One of the numpties defending the work on here, Rafa, said this was in India, which is a first world country. But this is one of many people around the world that are obviously not a professional and employed at an actual service shop, this is just another guy that knows how to turn on a lathe and use an angle grinder so they make a bunch of engineering videos about things they have no knowledge, training, and especially proper tools and materials to do correctly.
What a bad and dangerous job, you just welded hardened steel with soft steel, you didn't do the tempering process of the material, with heat and oil, which gives the steel a blued tone and you put paint on it? terrible....
What do you mean temporary solution that repair has that machine shops golden 60 limited lifetime guarantee. It has a lifetime guarantee of 60 clutch applications, 60 gear changes, 60 seconds of engine run time, or 60 meters of distance driven which ever comes first and just because that shop likes its customers to be completely satisfied with the quality of their work they do the metal partials from “machining” the input shaft with the grinder that got sprayed into that special high speed low drag input shaft bearing and the custom special high gloss non stick coating applied to the input shaft is no extra charge because the owner of the input shaft is a loyal repeat customer 😁
Gullreefclub...apologies, here in the deep rural countryside of France we're not use to such long guarantee, or such fine engineering, we're still at the stage of repairing leather harnesses and cart wheels to keep the wheels of road haulage turning...
I never know this is also the place where they keep Minions 🤣 As far as that shaft is concerned: yep, it looks fixed, especially after that paint job. Structural strength won't be an selling point however, as this will have the longevity of an inflatable dartboard.
There are plain sections in the outer rim of the broken shaft. That could result from an oscillation over a longer time in combination with an overload of the properties of the material. An mechanical parts failure have reasons. And despite the craftmanship of these workers and the lack of money to buy spare parts it is higly riscful to fix broken parts. The next failure is pre-programmed, and the next time a person could be harmed.
It's not connected to a tractor pulling engine is it, the shrapnel won't fly far. Heavy vehicules usually have a retarder on output shaft ... The only real risk is when overtaking or getting to a highway when you need acceleration. The initial failure could be as simple as a broken pilot bearing in the flywheel.
I bought a truck originally equiped with a Perkins engine but the previously owner change for a om352. The stock imput shaft is to short for this engine and have to be cutted and welded. Three years ago a have a bad bearing and broke one thoot of the imput gear. I'm buyed another prize and cut the shaft again lol. Two years ago I've changed the engine again, this time is a om366la. The Clark gearbox originally designed to handle with 45kgfm and 145hp is well supporting the 69kgfm and 211hp of this new engine.
yes, i agree with mr. Randall Dunkley, if we look closer we see that 2 or 3 rolling elements (rollers) are missing and it will develop an excentric rotation , i think this was the cause from the begining and instead of fixing the cause he's fixing the result and soon will be the same or worse, but i respect trying to be inventive..🙂Also it is worth mentioning that when he induced to the parts so high temperature with cutting and welding, the parts are much weaker in proximity of that place.
this would only ever be acceptable if you were in the field and somehow had a lathe and welder at your disposal. You can easily see that the diameter of the shaft has been reduced where the repair was done. Also curious as to how accurate the "metal twig" dial indicator is :)
You'd loose all that weld area, plus create two new weak points between the rod end and the inner hole. The larger the rod, the larger the weak point. Here he just used the protrusion as alignment point, and to set the weld gap.
Excellent workmanship on this repair, but unfortunately, the repair is not even close to the original fatigue strength of the original piece. It will not be able to take the same loads and therefore, break again at a much lower torque loading. Welding any parts creates high tensile stress risers. This can be annealed to relieve the residual stresses but the part would have to be re-heat treated to gain back some of it's original strength. Also the internal grain pattern from the drop forging process used to make such parts, is not continuous in the weld area, which greatly reduces the fatigue capability in that area.
