Amazing technique Broken Rear Axle Repair | Local workshop amazing work |
2021 ж. 27 Жел.
8 824 450 Рет қаралды
#BrokenRearAxle#RestorationAxle Repair Local workshop amazing work
#technology #amazingtechnology #engineering #repair #engineer #things #manufacturing
Видел бы это наш токарь Семёныч с завода , слёг бы с инфарктом 😁
А мне кажется, что они это снимают не для того, чтобы ставить на машину, а чисто в целях создания контента. На просмотрах заработают больше.
Это опасно ставить куда-либо
Видно не первый раз уже переварена. Но они эксплуатируют технику с перегрузом, и не новая та техника.
Да у них денег на запчасти нет или может самих запчастей. Вот и делают ,что могут и как умеют.
@@user-xw4zf8xc5q тут вопрос что же дешевле: поставить одну деталь по цене в три-пять раз превышающую стоимость подобного ремонта или каждый месяц в гараже оплачивать этот ремонт и терять деньги на простоях грузовика.
ساری محنت عینک والے استاد کی ہے ۔ بہت خوب
In South Africa we have to repair like this everyday. Shout out to all the mechanics that has to do the impossible daily to keep the world moving!!
У меня видосы про шлифовку
É isso ai cara todos trabalham com oq têm
Superharry, you must be a taxi mechanic!
@@andrewallen9993 🤣🤣 , heavy earthmoving mechanic
@@superharry557 you actually weld halfshafts together as badly as this and the repair lasts?
I am a person in a small shop. What is most heartfelt to me, is that I repair things that are seemingly impossible, like this, on a regular basis. I work with metal, and plastic on a regular basis. After a few tears, I finally have the faith of the guys that work with me. They have come to me and say, Dan, what kind of magic do you have for this? To all of you novices out there, the one route to success I can tell you, NOTHING IS IMPOSSIBLE. Give yourself some time, watch the oddball videos like this one, and LEARN. Nothing is impossible. You can repair ANYTHING, even electronics!
This guy is amazing Makes his own way To make it right again. Where most WOULDN'T KNOW WHERE TO START. TOP OF HIS FIELD 👋
This is crazy good😃. Im laughing how he bangs when still attached, I do this amateur level. Love it
I think you didn't need to grind internal cornice, strength is more important than appearance. After grinding strength of welding decreases.
M0
Llllllll
Блин, сверление без смазки, рукава по колено у токарного станка, за один проход под хорошим углом снимает такой слой металла, как ты ещё жив, кто ты воин?! Дай бог тебе здоровья 🤝
Тк там трещина ещё на диске
M990 o.o
Ещё порадовала наплавка толщиной сантиметра в 3 на вал и заплавка отверстия во фланце без какого-либо контроля, хотя под циклическую нагрузку ЦД не делать уж точно грех. Ну и сам шов не факт, что с полным проплавлением, щель изнутри даже не пытались разделать нормально, зато сколько поверх навалили...
А ещё сварка в станке, без зажима на детали,ток от сварочника через прецизионные подшипники станка проходит.Трешак
Ни кого не смутило что коробка передач у станка на сухую работает?
Dorud...Afarin bar shoma ostad tarashkar.besyar karetan aali bood.I'm from Iran.keshvar doost va baraadar pakistan zendeh baad👍🌹
These men show a lot of pride and care of their shop and work. Old machine’s but clean and well kept. Bravo.
Lol
What you mean, by clean ???
DID WE WATCH THE SAME VIDEO ?
we have different opinions on what is "clean" it seems
Wouldn't let them touch a bicycle for me, had too many years working overseas with this kind ?????
Делать сварку прямо на станке? Вы что? Так можно было? 😱😱😱
Массу кинув на станок)) хотя я не видел где она была)
Техника безопасности на уровне нас миллиард одним больше одним меньше все равно.
Работают на корточках, едят на корточках и т. д...
Папуасы блин
Поэтому у них в стране тисячи гибнут на дорогах за день. Не удивлюсь если этот вал оторвёт на каком то автобусе через месяц.
Не чего вы не шарите там гнутый электрод всё решает😁😁😁
That "gauge dial" on that 4 chuck 😂
"Oh Wow! It looks great! Thank you!" "No problem! See you next week!"
The more I watch of these vids the more impressed I become.👏…..and well filmed.
молодцы отличная работа👍👍 благодаря вам я понимаю что у нас не все так плохо, есть еще куда падать
Вынужден Вас огорчить .В сельских мастерских , мы уже пролетели мимо них значительно ниже.И падение продолжается.Токарей,сварщиков ,слесарей уничтожают как ненужных.Кнопкотыки рулят.
@@user-uz4yt2by9h возможно, я не из россии. У нас эти чистые классы давно вымерли а разряды ушли в нибытье вместе с ссср. Все идет к универсальности. Чем больше 1 человек выполняет разных операций тем более он востребован
@@dimazzz8617 Ну а мы в России со скоростью локомотива летим к лаптям ,онучам и боярам на дорогих авто .А универсальность и инициатива по очереди любят инициатора в изощренной форме.Ну а в целом падаем.Всего Вам доброго.
@@user-uz4yt2by9h всего вам доброго.
@@user-uz4yt2by9h ем... что за бред к каким лаптям? Если ты деградируешь то это не означает что все деградируют! Сейчас человеческий труд заменяют на машинный ибо а)дешевле б) точность и в) работа 24\7
Одни коленвал варят,другие привода, ну у этих хоть колумбик есть, Я хочу чтобы они собрали машину из тех деталей которые они делают 😂
Я бы тоже глянул бы . Неужели вареную полуось на грузовике не свернёт?
Там каждый грузовик из тех деталей которые они делают, и ходят, ещё и с башенными перегрузами
Pésimos arreglos
Их братухи, машину плетеную из веток делали, так что думаю собирут:)
🤣🤣🤣🤣🤣🤣🤣🤣🤣
ياريت العرب كذلك اهتموا واستفاذو من الاحتلال البريطاني وغيره مثل هؤلاء اخواننا باكستان تحياتي 💚💚💚
This is what Mechanics/Fabricators do when parts aren't available. Separates the men from the boy's. Great job guys!!👍👍👍
See I get that but, it's not their materials it's the techniques and lack of training, I mean the guy didn't use one drop of oil the whole time that hub was on the lathe, they probably go through tools like crazy with not knowing how to use them properly.
@@kielbasa.sausage I know they didn't. No dial indicator either. They needed the truck to go, so they did what they could with what they had. I ve done repairs on trucks(semi's) on the side of the road, in parking lots, in the dark,rain, snow,ect. I didn't always have the "proper pieces" for the repair so I do what I can to get it back to the shop, just like these guys did. They didn't give up. Even though it wasn't perfectly done- they got it rolling again. You've got to admire that my friend.
These videos are some of the scariest shit I've ever seen. How screwed will it be when the shaft breaks off the end. The other video of resurfacing a pressure plate with welded or brazed cracks. That will come apart and scatter everywhere, maybe kill or mame someone.
@the dude you can have whatever opinion of the job you want. I don't care. I said I thought they did an excellent job on it for what they had to work with,that's all. Look around. There's lots of substandard repairs going on in our country too. If the axle breaks again, it's inside a housing. Remember it already broke once. Yes, I still admire the repair for what it's worth. I also know it would take a replacement axle to repair it right. At least their not sitting there crying about it. They did what they could.
@the dude well dude, why don't you fly on over there and educate them? Why waste my time. Go show them how.
У таких мастеров работа будет всегда это точно….
по виду уже была сварена.толку от такого ремонта ноль.просто нравиться энтузиазм и уверенность этих мастеров.
Зато у них работа есть всегда ))
لوكان صفر ماتعبو هكذا
@@razikrazik8477 не взрывай тут ничего
@@golem2002 😂
Ничего ты не понимаешь, соберут и продадут какому нибудь лоху, пустая и при асфальту пару км проедет
I am blown away how creative these men are with minimum tools . We toss out so much good stuff .
Minimum tools? A metal lathe is hardly minimal...
I mean. Kudos to them it's all they've got but this repair isn't exactly.. Something you'd want on your car.
Facts reusing resources
That lathe cost more than the average car
Now he had a bigger one! Is that a 20in chuck. That chuck cost more than my escape guaranteed
Суровый мастер, маслом не смазывает и даже не охлаждает, когда такой большой диаметр сверлит. Стружку тоже по полмиллиметра снимает. А уж наваривать сломанную полуось - вообще песня. Центровка и балансировка - о таком они вообще не слышали. Такой ремонт - это очень не на долго. Видно же, что металл не однородный.
Да ты что, их жалко лично мне, они в темноте незнания, реально жалко их и тех у кого эта штука из раза в раз ломается
А может смазывает это видийо укароченыйже
Вроде центровал ты повнимательне посмотри
Наверное нет не хрена, да работают за копейки
Мля чувак ты вкурсе сколько их населения? Вкурсе что у них до сих пор кастовая система классов? Вкурсе что один туалет по статистике если не путаю гдето на 20 или больше семей?
When labour and materials are cheaper than replacement parts, this is just what you do!
До первого серьёзного рывка.... И дальше всё по новой😂
Думаю и серьёзный рывок не понадобится.
А вы думаете что на заводе делают по другому? Заблуждаетесь, такая же сварная конструкция, только здесь ремонт а там новье
@@user-vm4wq5gi4fне знаю на каком вы заводе видели чтоб полуось варили , обычно на заводе полуоси делают из цельного куска металла с помощью ковки , после мех обработка и закалка.
@@user-br3zd5ur5q заводчане всегда думают что только они делают правильно,но когда рядом ближайший город за км 300 люди делают что могут, и получается очень неплохо, когда нет запчасти крутишься как можешь, так что впаривать свое научное мнение никому не надо, купить готовое проще, но не всегда возможно
@@user-br3zd5ur5q обратишься на завод по чему нибудь всегда нет того и другого, то опыта то ума, то желания, люди делятся опытом и это очень хорошо, в деревне на коленке можно сделать
The problem with such shaft repairs is. that because it looks so good, it does not mean it is very good. Metal suffers from metal fatigue and the work function on that shaft after years of operation would have " worked the metal" at some distance away from where the axle broke, and this is memorized by the shaft. The manner in which he welded on the end of that broken shaft to fill it in before he inserted it in the coupling disc, was rather naive of the granular makeup of that region. Just because one welds some metal on a broken shaft to make up for the missing metal, that sort of cosmetics would look good, but the joint is lacking strength, the old metal has been suffering fatigue and that will not be corrected by simply welding on it a lump of new metal, with a cold weld. The stresses involved are enormous and that shaft is not simply malleable iron but good steel which needs good preparation and good controlled cooling after welding. One needs to know the phase diagram of that metal and its heat treatment to " rejuvenate it! Still, the actual workmanship is good but the higher-order engineering is very lacking. Those trucks are overloaded most of the time and it is a reasonable temporary repair for a cargo truck that does not travel at high speed on a fast motorway with other cars around. Still, these people are to be admired for their intelligence and ingenuity, but let us hope that we do not see repairs like that on a shaft used in aircraft carrying passengers.
Its a dirt poor country,they gotta do what they gotta do.
Yes ,when I first saw it a lot also went through my mind,but I see his welding shield and no gloves and realize it's the best your going to get in this part of the world.
Was thinking about the fatigue and welding stresses too. Agreed, it's amazing work for the tools they have. A nice surface finish on that inside radius would go a long way in preventing it from breaking in the exact same spot. Perhaps they did that after the video
@@offinthehaed I've been welding for close to 50 yrs. if you have for 40 with no gloves and sun screen life probably has so surprises for you! All you young guys protect yourself and look after yourself cause you are the only one that will.
@@offinthehaed this axle doesn’t sit in any bearing, the hub does. These just drive the rotation of the hub. But it also keeps them from seeing the weight of the truck, they don’t support the load, only accelerate the truck.
Смотрю и радуюсь что у нас не так плохо .
Love watching these videos even though I know the repair probably won't hold up any longer than it takes to watch a Mad Max video.
Что тут сказать🤷♂️молодцы, не все ьак могут не все так сделают при таком не богатом оснащении мастерской, сделали можно сказать отлично, но я думаю на много этой оси не хватит, потому что внутри поры остались и нет термообработки, а так мужики класс молодцы, реально уважаю таких которые из ничего сделали чтото, респект
кто бы что не говорил, руки у мужиков растут от куда надо!
Hoy en dia uno se encuentra con gente que dice que son mecánicos y lo que son es armadores de piezas nuevas porque solo nuevo te piden las piezas cuando se te daña , nunca se esfuerzan por ver si te reparan una pieza y ahorrate dinero y te dicen es que reparado no hay garantía, eso es una mentira, la verdad, que hacen falta mecánicos como los que mira uno en éstos videos, son personas que se les ve la empatia, la pasión y el empeño en que las cosas salgan bien desde el inicio, claro se ve que desde que toman una pieza su misión y visión es clara, es dejarlo como nuevo, wooo mis respeto para este tipo de mecánicos que se ven en este video. Felicidades desde Honduras.
I love the way this man just uses a bent piece of wire instead of a dial indicator to centre the work in the chuck
It's called a surface gauge.lol
+-1 thou, +-1/16 inch, what's the difference right?
Every old machinist I have ever known uses a wire like that to get it very close and then would switch to a dial indicator on high precision stuff.
It has a calibration sticker under it. LOL
There's a very wide tolerance on truck parts.......
Это будущее нашей страны... 😁
это вряд ли. не зря в русском языке у работы корень "раб". так что будем вымирать бездельничая
A true civilization keeps getting better, progression of technology. These guys are true master craftsmen but held back by their government. Imagine putting these same guys behind state of the art CNC machines they could make, fix anything.
Or they would get lazy and complacent and start to rely on the technology. Lol... 🤷🏾♂️😁👍🏾
Im a maschinist so i Work with both lathe's Like the one in the Video and High Tech CNC mills and this is extremely sloppy Work
Nice Job This is PAKISTAN and love these people ❤
Вот так при помощи "палки и веревки" можно иметь свою устойчивую экономику!
You must not weld items in the lathe with the earth clamp on the lathe body. Doing this will damage the bearings in the head stock of the lathe as the current will be arching across the small contact areas of the bearing The same rule applies to all autos and plant always clamp direct to material being welded
It was said many times. They just don't learn.
I agree ,made my comment before I saw yours
I also wrote this on another video some weeks ago. Also important on motorcycles. If the headlight and the indicators aren't properly grounded, the current will pass through the steering head bearings and that will ruin them pretty quick.
The stoneage is near ! Ha Ha
Entirely agree. They will learn the hard way.
Great work, love the chisel hammer with the chain😄
Realmente son artesanos de la mecanica, cuanta pasion!
Это всё делается на авто которые уже лет 40 не выпускают видимо. Думаю есть ролик где лопнувший на пополам коленвал сваривают.
Да они же и сваривали.
@@user-en7tt5dp6f не видел ещё.
Да первую четверть,может не прям они но тоже люди в платьях на той неделе смотрел.
Варил на мото восход -2 пацаном и ездил два года и армия ,они аптимисьы ,нам надо менять на нефть каждую загагулину
Есть, я видел
Варить на токарном, видимо ремонт токарного станка там такой же дешевый как и ремонт автомобиля.
Ни условий, ни технологий, но парни реально мастера своего дела, и токаря и сварщики и инженеры. Нам бы таких на АвтоВАЗ.
Как раз также у нас рукожопы и работают на автовазе, придурок ты
На автовазе такие же рукожопы. Из говна и палок как говорится))
I realise these guys are doing their best but a bit of a clean up BEFORE the weld, a chamfer and a preheat would help and maybe give it another month or so before it's back in the shop again. I doubt whether Kurtis from CEE would give them a job. Well done guys but just a bit more prep work needed. But, with over 6 million views in 3 months, I reckon they are the real winners here.
Most excellent work!👍👍👌
Кто-то тоже считает что это оторвет на первом хорошем подъёме?
это дело случая.бывает ломает и на ровной дороге....
ما شاء الله عليكم.. عمل جيد جداً.. لو تكملوا الفيديو حتى التركيب يكون أحسن..
Amazing piece of work! Great job. Greetings from the Netherlands, Ruud
I have to give a big thumbs up to all the welders mechanics machinists in these videos. Your repairs are a credit to you all. In a world where most of us are willing to throw it away and get a new one. You boys are clever hard working people who keep the wheels turning God bless you. Best wishes from jonsey south Wales gb.
Without any normalising of the steel where that fillet weld was done,I can pretty much guarantee that’s where that axle will snap again.
Dont worry. it will be brought back again.
@@Tirah5 100% it will. Will definitely crack on the edge of weld when it does.
It's a real possibility. Although, it looks pretty stout to me. Probably get some like out of it
@@innerverse1809 I guarantee the heat affected zone grain structure begs the differ.
В первую очередь надо поменять подшипники в ступице, или ступицу
I'm a certified welder I'm telling you right now that's just going to break again down the road
Any machinest should be proud to have a repair like that made in any shop anywhere. GREAT JOB..... Real skill. EBW USN Ret.
Wow that lathe is cleaner then 99% of the lathes I've seen. That means he loves it alot I think.
Nice job. Didnt expect it to be done with a stick welder!
Its the axle fuse..
Welding outside in the wind probably makes it the best choice. Not sure how the strength will compare with original though. I thought that these axles were forged.
I'm just going to say, usually you do the last step first. It's not the best idea to weld over iron oxide and whatever other crud and dirt built up over the metal. You can actually see what looks like small voids and cracks in the welds in the final close up.(18:40)
This guys are so amazing working on their craft. How come they never work on work bench or table ? They have this great tools and always working on the ground?
Pakistan is full of talented and hadworking people.
That poor lathe! And I love their indicators.
I can remember being told never leave the chuck key sitting in the chuck
Never mind the lack of eye protection and loose clothing and rags laying around.
Noticed that too. I have seen plenty fly out
I think your skill level will be the best anywhere in the world.
Parece nova. Parabéns!!!
Bonjour cela fait au moins la 100e fois que je regarde ces vidéos consternant ces personnes pour moi ce sont des virtuoses de la mécanique dignes des plus grands préparateurs voir plus milles mercis de me faire connaître cela
Son chapuceros
what they do won't work.
зря сварку сточили. ослабили.
This is Pakistan Everything is possible Proud to be PAKISTANI
i love the weld camera filter, its about time someone made one
Скорость он технично переключает на станке 😁
Skilled Craftsman !
Is there Anything these guys can't fix? Amazing to watch! Great Job. 👍
very nice work with old machines, they are gods of mechanics. Great, thanks for sharing.
These people are intelligent and the fact that there is young apprentice around is awesome.
I liked at the very end when he dropped the axle on the splined end onto the ground.
Man - great job guys, lets throw this in the dust 😂
Скоро увидим видео, как ребята коленвалы-распредвалы варят 🤦😂
Эти могут
Уже есть такое видео)))
@@igoroshurko25 🤦😂
Я видел такое как колено варили.
Be sure to ground the part so that the lathe bearings are not damaged from arcing by carrying the arc welding load. The protection of the machine is the priority!
NOT IN INDIA
@@js-vm8zc LOL
Sort of an old wives tale probably from the days of babbit bearings- electricity always follows the path of least resistance and an oil soaked bearing is high resistance.
@@js-vm8zc It's Pakistan.
@@keithcoinc it's totally irrelevant what 3rd world country it is where people are expendable and a lathe is worth more than a human life
Что не говори у этого человека есть всё необходимое инструменты дай бог ему здоровья крепкого
Anyone else notice how ridiculously clean that machine is???
How badly do you maintain your machines?
@@angrydragonslayer ... I think the point is how the machines and tools are spotless and the building itself is falling down.
@@rupe53 gotta look after the money making machines. They got better tools then some shops here. That's a huge lathe
@@DanielSan-ch7dr ... yup, it's a nice piece of machinery, but I'm sure it's older than me and I'm retired.
@@DanielSan-ch7dr "huge lathe" nah that's only a little lathe
Такую эпичную ручку у молотка я ещё не видел!
This guy is basically 3D printing thr axle by hand. I love these videos and my hat is off for their skill. But I get depressed to see all that dirt, lack of protective gear, lack of respect for thr environment (all those oil spills). But, this guy is skilled. Hat off to him!
I had to do something like that recently for the clutch pedal rod on my car recently. Not as wide, but longer. Wasn't even sure that would hold. I hope this axle does!
Great Job of Great Professionals!!!
It's always nice to see how people repair stuff instead of replacing. Unfortunately, that axle isn't gonna last very long because of all the crack initiation points on the inner radius, as well as tension in the material from all the welding. But I suppose they will fix it again when it breaks off.
Что такое напряжение металла от сварки?)))
Just like we did in Norway 50-60 years ago. Some details could be done different.
I am from Guatemala and we work the same way as this people from the Middle East countries . Very similar . My respects , thank you for the video
The dude really did it with all the probably out dated equipment and yet not only he did it well it shows that he really didnt need hitec equipment to do the repair becuz he is the brain of all the measuring and precision not the out dated machines he owns ...if he only had the updated equipment imagin how 100% perfect this repair wud of been. Exelent job this guy performed with his equipment and making the best out of it👍👍👍and thst im so positive sure he did his best...no doubt.😄
I like watching these videos, iv always liked history programmes, this is early engineering still being practised in a modern world, living history if you like.
Looks great, but that axle will crack and break very, very soon. Welding the end and the outside edge can't compare to the strength it originally had as a one piece forging, which also broke. I realize it's a this-or-nothing scenario, but they can expect to be doing this repair again in the near future, unless this truck never pulls a load.
i agree, and if you look at the disc this is not the first time its been repaired, and why don`t they use a dial to set it up right.
Yup
Temporary fix… will crack soon with all that slack in the welds
Yup....definitely going to break again...especially when trying to weld on high tensil material....never will get the same strength out of it...plus,burning in with a 7018,is just going to make the material even more brittle than it already is
Probably should have been preheated before welding.
Привет от блогера с Луганской народной Республики
Bom dia, ótimo trabalho
Muy bien Maestro.
At the beginning of the video you can see the shaft was repaired before. From the job done in this video it is clear the shaft will need to be repaired again. People compliment the simple tools used. Anyone can do anything wrong, especially if the expectation is that it only last a little while.
The rear axle failure had nothing to do with the truck routinely being over load d and on difficult roads.
@@jonyoung6405 Originally it probably did, but welding creates a brittle area of metal known as the HAZ (heat affected zone) and if the drive flange is not mounted exactly central and perpendicular to the axle then every time it rotates it will apply a cyclic stress to this area which will quickly fatigue and fail. Those axles and drive flanges are originally forged as one piece for strength because they are highly stressed parts.
In thé end you can see it has inpurities and will deffinitly crack again
@@klaas2804 probably no others in existence over there. It gives someone a job to do and they get there truck fixed. It's a lost art where people can actually use tools to rebuild stuff not jist toss it away.
Finally an intelligent comment, axle shafts are a forging for a reason, there is no way this repair is even close to the strength of the original part. Can you say repeat business!?
Молодцы ребята. Нету слов!!
Super bro.. True love from India..
It would be interesting to see how long it lasted in the truck, and where it will break again
probably better than the factory
@@bourbonrenewal216 ha, you can even see the small defects in the welding job after he polished it no way its better, in fact it's worse
Don't you dare come to us with science and numbers 😂
I can say this much machine shops been shorting axle shafts like that a long time for kustoms and drag cars long before currie and strange made custom length axles still done today for odd axles
@@bourbonrenewal216 a surface deep one pass cold weld without any preheating on a large pieces of alloy axle steal. THERE IS NO WAY THAT IS BETTER THAN A SINGLE FORGED HEAT TREATED AXLE FROM THE FACTORY
Muito bom!
Parabéns pelo profissionalismo em ferramentaria bom trabalho.
Drop test with the thumbs up approval. THIS READY SHIP IT! 👍🙂
Where was the earth when welding in the lathe ? I hope it wasn’t running through the machines bearings
I sure hope not but I didn't see it either......
It could have been on the the splined end of the axel I guess, but probably was through the lathe
These are excellent videos. Great watching the work progress.
The guys in these videos impress the hell out of me sometimes but this one was hard to watch
Top job, repair with heart and mind.
Nicely explains why wheels departing trucks is a common issue that kill many people.
Wheels are connected to drums of axle housing not axle hubs
Wheels is in the axle spindel, it was secured being by a large nut. The axle shaft is only connected to the brake hub. Which means that you can remove the axle shaft without removing the wheels
А мы раньше сдавали ломаные полуоси в металолом!
Nice job ! 👏
I can't believe every one of these dudes isn't missing an eyeball
Hopefully there’s no undercut on that weld on the inside that’s gonna be the new weak spot. Back up an running!
Отличная работа, в конце бросили не аккуратно на шлицы🤣🙈👍
И электроды были наверное уони
В этих видео из Пакистана, если не бросить готовую обработанную деталь на пол, удачи не будет
Good job. I'd be interested to see how you heat treat them though.
HADIR MENYIMAK