Try doing this at anchor off somewhere like Dubai or Singapore or Hong Kong with the outside temperature 40 degrees, and when the engine is still hot, with hot oil dripping down on you inside the crankcase. Looks fairly easy, but the reality is that it is pretty back breaking work. Brilliant video and would have made our jobs easier if we had this to view when I was at sea.
Ah yes I remember it well. Doxfords mostly, Harlands, B&W, 1966 to 1972. This is looks like it was filmed at the Engine Builders and not on a ship. Where's all the oil covered surfaces in the Crankcase. My overalls only looked like that when I took them out of the bag brand new. Think the Doxford was a 750mm Dia bore.
The guy who posted this great video has done a marvelous job, the simple layman watching the video is exhilarated pretty easy work!! The guys working in the video are seasoned professional master mechanics (charge hands) make no mistake it takes years to perfect the craft there's no chance for error period, it's 100 percent or 0% .Sennen Antonio Dourado Wisconsin Milwaukee Mumbai India
If only every maintenance procedure was documented and explained this well at the place I work - would make training and getting guys up to speed so much easier.
you start watching one of these, and you just can't stop until you see how it turns out. You just have to make sure the piston goes back into the cylinder. The suspense is overpowering.
@@ajingnineba5250 you should post your comment at the top level, click where it says - add a public comment (geesh, now I had to watch the whole thing again. After two years, I couldn't remember how it turned out.)
It becomes even more impressive when you realise that Diesel engines, especially large medium and low speed marine engines like this one, will run on pretty much anything. They can even run off of unrefined _crude oil._ So if you have a ship or a power plant that runs one or more of these engines, you can just use crude oil to power them, although they mostly use Heavy Fuel Oil (HFO, a.k.a "bunker fuel" or "bunker oil") or things like Low Sulphur Fuel Oil (LSFO), Marine Gas Oil, or Marine Diesel Oil. And to all you idiot greenies with your hair on fire: 1. These engines can run off of LNG, LPG, methane, ethane, propane, butane, methanol, and ethanol as well. 2. You don't even need to modify everything to run on just natural gas. Diesel engines are inherently dual-fuel capable. 3. And most importantly, Selective Catalytic Reduction and exhaust gas scrubbers exist for a reason. And they exist because the exhaust gases contain lots of NOx, and sulphur too if you're running high-sulphur fuel like sour crude oil. But the SCR system helps cut down on NOx emissions, decreasing the formation of smog, and the scrubber helps to remove sulphur, phosphorus, heavy metals (mercury and lead primarily), and other harmful substances. The scrubber's ability to remove almost all of the sulphur from the exhaust gases means that the amount of acid rain formed is so little you don't even have to worry about it. As a result, the container ship that you see out there, despite being powered by a two-stroke Diesel engine that burns extremely dirty fuel, can still have very low emissions. There, you happy now?
FELICITACIONES POR EXCELENTE TRABAJO DE MANTENIMIENTO SIGUIENDO LOS PASO A PASOS CORRECTOS CON MUCHA ETICA Y PROFECIONALISMO COMO TAL, FELICITACIONES AL EQUIPO DE TRABAJO BENDICIONES Y SALUDOS DESDE MONAGAS VENEZUELA. ESTOY SUSCRITO EN EL CANAL
All the safety equipment stuff at the beginning and the guy isn't even wearing eye protection. Glad nothing fell when he stuck his head inside! Great video though, I love these instructional videos, very informative ;-)
Belive me, working in the crank space, you get covered in lube oil. It is no way that clean. Been there many times....!both Gotterverkan and Man engines... all good fun at the time....!
they are working smooth but infact u will face many problems during overhauling some time hydraulic jacks problems, nuts and other components stuck ect and will take extra time.
I see paint stick marks on the piston skirt bolts and It makes me think it's for indexing the bolts so the locking wire hole location in the correct spot. Either that or for torque turn method of final torque spec.
Reminds me of a giant valve in a cylinder head more than a piston and con rod. No wrist pin eh? I need to look up exactly how this is set up... I wonder what an assy like this would cost! I couldn't afford the bolts !
Looks like the stuffing box keeps the piston lube oil in the area between it and the piston. I have been wondering why the crankcase was so clean and dry. But how is the oil circulated and filtered? Is it kept separate from the bottom end oil?
There are two kinds of oils in these engines. One for the combustion chamber, which comes from the alpha lubricators and pumped through holes at the top of the cylinder liner, and one for the more classical mechanical interfaces, which never comes in contact with the soot of the combustion chamber and can therefore in certain cases never be replaced (yeah... a 28years old engine without a single oil change... seen it).
@@nikitapottier3611 ... Makes perfect sense and when you have this much room to play with you can compartmentalize all you wish. Beautiful design really. Only feasible when dealing with this sort of size tho...
Can not found any information for inspection (measurement and clearance) Piston skirt. please advice while and reason for replacing bronze ring on piston skirt
That's a little baby engine that looks new at the training facility. Should show grown up engine, hot and dirty with damaged or missing special tools over the years. Or companies who save money by not supplying OEM parts that don't quite line up. Or have 12 hours of maneuvering to have to start job @ fwe to be told have to make next tide to maneuver back out. He also doesn't have hot oil dripping on him or working in slippery as shit crankcase. When engineer s die and go to heaven, this video is what it looks like. Look at the clean boiler suit, damn I'm jealous. Most ships I've been on have spare piston and crown built and ready to go so it's more swap out and rebuild later. Engineer best friend is is spray any metal to metal surface or gasket with GN metal assembly spray otherwise lost time cleaning surface s or seized together.
Why can't my life be like this. When I'm on a project like this it's more like,,,, Special tools? Make something in the shop. Parts? We have welders and some random worn out machine tools from 1912, fix the old parts. Help? We gave you a whole crew of crack smoking Oompa-Loompas who speak an obscure dialect of a language you never even heard of before. Then of course they always ask "What's taking so long?"
This is the shortcut way if you do what manual says you need to install the tilting tools which you delay about 1 hour. The technique how you handle the engine room crane perfectly. 😊😊
@4:53 the conduction coil thats wrapped around the fitting has either exhasperated or dis assimilated either shrank or dissolved over longevity of products lifetime warrenty
Det der gav mig sgu jern på, og det var endda kun en lille motor. Den slags film gør virkelig at jeg kommer til at savne min Golf D II. Diesel accelerer ikke, Diesel opbygger fart, og det var lige det min lille Golf gjorde som jeg kaldte Holger.
Can someone tell me how the connecting rod moves straight up and down,with no side to side motion like most all other engines I'm familiar with? How would it connect to the crankshaft without moving side to side? Thx
It’s a cross head design. The crank and connecting rod are below the cross head which takes the lateral loads while leaving the the piston isolated from those forces.
Dear sir, I am working on 6s50mc. Engine, installed in 1996, please provide me the cylinder head overhaul videos. Cylinder head is fitted with hydraulic ring and hydraulic nuts... Kindly send me the procedure for opening and tightening these nuts
Just found this video, your question is 2 years old however if you couldn't sleep and still wondering well the OEM recommended interval between piston overhaul is 8,000 hours. That corresponds to 320,000 miles on a car averaging 40MPH. Unfortunately my experience with those MAN designed slow speed engines is we had to overhaul more often due to various breakage before reaching the normal running hours. When that happens in the middle of the ocean in a hot region trust me the engine is not that clean nor as cold as in the video and you better be fit if you will be the one disconnecting the cross from the con rod and dismantling the stuffing box. You get literally showered with lub oil at 70-80 Deg C. The metal from the engine burns your feet through the sole of your working boots. Plus add the ship rolling side to side, 3.5 tons piston swinging under the crane, stay clear! It can be hell in Eng. Room. I also saw the piston cooling carrier coming out of the crankcase. Fun days that was... Usual time would be around 10 hours to complete the job when everything went well and with a trained Engine team. Every 1 hour or so the Captain would call you on the phone and ask if the repair is soon to be finished. At least a good Captain would bring cold drinks during the work and then would give a case of beer to the guys once we got back under way.
I was thinking to myself ‘look how clean their coveralls are.’ That’s my indication as to the level of reality to true working conditions. I’m no marine technician but i know a training aid from a workhorse when I see one.
Try doing this at anchor off somewhere like Dubai or Singapore or Hong Kong with the outside temperature 40 degrees, and when the engine is still hot, with hot oil dripping down on you inside the crankcase. Looks fairly easy, but the reality is that it is pretty back breaking work. Brilliant video and would have made our jobs easier if we had this to view when I was at sea.
Sounds like it's wasn't the job for you
Ah yes I remember it well. Doxfords mostly, Harlands, B&W, 1966 to 1972. This is looks like it was filmed at the Engine Builders and not on a ship. Where's all the oil covered surfaces in the Crankcase. My overalls only looked like that when I took them out of the bag brand new. Think the Doxford was a 750mm Dia bore.
I can't tell you how often I needed to do this. Thanks, MAN!
These are the people who with their precision brought most of our comforts to our modern homes.
The guy who posted this great video has done a marvelous job, the simple layman watching the video is exhilarated pretty easy work!! The guys working in the video are seasoned professional master mechanics (charge hands) make no mistake it takes years to perfect the craft there's no chance for error period, it's 100 percent or 0% .Sennen Antonio Dourado Wisconsin Milwaukee Mumbai India
What did you do when you got home? Oh nothing, just learned how to overhaul a piston on MAN MC/MC-C series engines. Damn I love UA-cam.
mosipd - yep, a lot more interesting than the crap on tv!
mosipd ok
mosipd 0k
Wow! That's a good answer! Ha ha ha ha...
HHÈĹOÒO
If only every maintenance procedure was documented and explained this well at the place I work - would make training and getting guys up to speed so much easier.
Well I'm glad I watched that now...it's given me something to do over the weekend, overhauling my MAN marine diesel engine...
Incredible dimensions and yet "simple" to repair. Access everything. I would like to see such an engine someday.
You guys are really doing great job. keep going and spread your valuable knowledge....
Good thing they put that bell ringing in there so I know when a new procedure is starting.
I could watch guys working all day. Doin' A Fine Job!
you start watching one of these, and you just can't stop until you see how it turns out. You just have to make sure the piston goes back into the cylinder. The suspense is overpowering.
Good evening I am and electrician ,a winding man how can I learn more about generator A.C and altinetos
I wish to now more about generator repairs and maintenance in all types of situation l need your your help please
@@ajingnineba5250 you should post your comment at the top level, click where it says - add a public comment (geesh, now I had to watch the whole thing again. After two years, I couldn't remember how it turned out.)
Good job...now repeat for the other 9 .
Man, I would eat a meal off that engine...so very clean and proper, very nice!
Beautiful ! Amazing ! So educative ! Excellent video.
Glad to see them use a proper wrench to reinstall the piston lifting fixture instead of the adjustable one.
Thanks team ,
wonderfully explained.
that must be the cleanest engine i ever saw...
It becomes even more impressive when you realise that Diesel engines, especially large medium and low speed marine engines like this one, will run on pretty much anything. They can even run off of unrefined _crude oil._ So if you have a ship or a power plant that runs one or more of these engines, you can just use crude oil to power them, although they mostly use Heavy Fuel Oil (HFO, a.k.a "bunker fuel" or "bunker oil") or things like Low Sulphur Fuel Oil (LSFO), Marine Gas Oil, or Marine Diesel Oil.
And to all you idiot greenies with your hair on fire:
1. These engines can run off of LNG, LPG, methane, ethane, propane, butane, methanol, and ethanol as well.
2. You don't even need to modify everything to run on just natural gas. Diesel engines are inherently dual-fuel capable.
3. And most importantly, Selective Catalytic Reduction and exhaust gas scrubbers exist for a reason. And they exist because the exhaust gases contain lots of NOx, and sulphur too if you're running high-sulphur fuel like sour crude oil. But the SCR system helps cut down on NOx emissions, decreasing the formation of smog, and the scrubber helps to remove sulphur, phosphorus, heavy metals (mercury and lead primarily), and other harmful substances. The scrubber's ability to remove almost all of the sulphur from the exhaust gases means that the amount of acid rain formed is so little you don't even have to worry about it. As a result, the container ship that you see out there, despite being powered by a two-stroke Diesel engine that burns extremely dirty fuel, can still have very low emissions. There, you happy now?
Excelente video. Parabéns.
FELICITACIONES POR EXCELENTE TRABAJO DE MANTENIMIENTO SIGUIENDO LOS PASO A PASOS CORRECTOS CON MUCHA ETICA Y PROFECIONALISMO COMO TAL, FELICITACIONES AL EQUIPO DE TRABAJO BENDICIONES Y SALUDOS DESDE MONAGAS VENEZUELA.
ESTOY SUSCRITO EN EL CANAL
You have great knowledge.
great to see the training video. where do i take the test and start working?
All the safety equipment stuff at the beginning and the guy isn't even wearing eye protection. Glad nothing fell when he stuck his head inside! Great video though, I love these instructional videos, very informative ;-)
You see him working a grinder? He pretty much knows there's not much can be falling when he takes engines like this apart.
BEAUTIFUL WORK
Very useful and infomative vidoe!
this video very good for my job on ship. thanks !
Now THAT is a huge piston!
great video!
13:12 the locking wire in the upper left is in the wrong position, it'll help the nuts to loosen.
Which one
good catch
Good eye.
Well, it was like that when they took it apart, so it was like that for years. New wires were fitted in a good position.
Good, I'm not the only one who caught that.
Very didactic for machine students like me Thanks MAN
you make it look so easy
Another add my experience piston overhaul.
I've never seen an engine that clean, that needed maintenance
Beatiful, I want a job like that
Perfect job
I would like to know the price of only one piston ring ? Swiss watches precision, the size is the unic difference. Wonderfull.
Belive me, working in the crank space, you get covered in lube oil. It is no way that clean. Been there many times....!both Gotterverkan and Man engines... all good fun at the time....!
they are working smooth but infact u will face many problems
during overhauling some time hydraulic jacks problems, nuts and other components stuck ect and will take extra time.
very good explination
I see paint stick marks on the piston skirt bolts and It makes me think it's for indexing the bolts so the locking wire hole location in the correct spot. Either that or for torque turn method of final torque spec.
Everyone loves a big piston 👍
Reminds me of a giant valve in a cylinder head more than a piston and con rod. No wrist pin eh? I need to look up exactly how this is set up... I wonder what an assy like this would cost! I couldn't afford the bolts !
Good job😁
I will not be able to hear 'molybdenum disulfide' without cracking up!
AvE on youtube?
@@chiefaves Yes he is!
keep up the good sir
GREAT VID
Thanks MAN. 👍
Very helpful for me ,thx
gread to see mij old work ;-)
mightyhenk. Congratulations, what a awesome job. Really.
wanderful very professional job tank you
Good job
It is hard dirty back breaking work. After years of doing it my body is in pain everyday and will be till I die.
For exchange the stuffing box, possibly for exchange without lifting the piston (exchange inside crank case chamber)..???
Looks like the stuffing box keeps the piston lube oil in the area between it and the piston. I have been wondering why the crankcase was so clean and dry. But how is the oil circulated and filtered? Is it kept separate from the bottom end oil?
Toby W the oil from the stuffing box is drained to a tank called the oil residue tank. It's not reused
There are two kinds of oils in these engines. One for the combustion chamber, which comes from the alpha lubricators and pumped through holes at the top of the cylinder liner, and one for the more classical mechanical interfaces, which never comes in contact with the soot of the combustion chamber and can therefore in certain cases never be replaced (yeah... a 28years old engine without a single oil change... seen it).
@@nikitapottier3611 ... Makes perfect sense and when you have this much room to play with you can compartmentalize all you wish. Beautiful design really. Only feasible when dealing with this sort of size tho...
Is it necessary to remove telescopic pipe connection during piston removal for K-MC engines?
Really helpful 👍
Can not found any information for inspection (measurement and clearance) Piston skirt. please advice while and reason for replacing bronze ring on piston skirt
Oil wiper ring
That's a little baby engine that looks new at the training facility. Should show grown up engine, hot and dirty with damaged or missing special tools over the years. Or companies who save money by not supplying OEM parts that don't quite line up. Or have 12 hours of maneuvering to have to start job @ fwe to be told have to make next tide to maneuver back out. He also doesn't have hot oil dripping on him or working in slippery as shit crankcase. When engineer s die and go to heaven, this video is what it looks like. Look at the clean boiler suit, damn I'm jealous. Most ships I've been on have spare piston and crown built and ready to go so it's more swap out and rebuild later. Engineer best friend is is spray any metal to metal surface or gasket with GN metal assembly spray otherwise lost time cleaning surface s or seized together.
Why can't my life be like this. When I'm on a project like this it's more like,,,, Special tools? Make something in the shop. Parts? We have welders and some random worn out machine tools from 1912, fix the old parts. Help? We gave you a whole crew of crack smoking Oompa-Loompas who speak an obscure dialect of a language you never even heard of before. Then of course they always ask "What's taking so long?"
The pliers tool he had when resetting the locking wires....what is it called. I need one of those.
Check "Bahco Drahtwirbelzange" on Google. "Wire locking pliers"
Wow. Jadi ingat guru sekolah dulu,
itu mesin apa ya pak gede bngt brapa cc itu ya.?? haha...
How change piston ring in enginer large and which tool use
Today is Saturday, today is add my experience. To how the piston overhaul?
The manual says not to tilt the piston horizontal without the stuffing box. Does it make a difference ?
This is the shortcut way if you do what manual says you need to install the tilting tools which you delay about 1 hour. The technique how you handle the engine room crane perfectly. 😊😊
they used mild steel wire wheels ??? and then they dont want the tolerances to exceed the values stated in the data sheet
I love this video
Why we are measuring the free ring gap of all piston ring before removing???
Very good job, but where is the safety helmet?
@4:53 the conduction coil thats wrapped around the fitting has either exhasperated or dis assimilated either shrank or dissolved over longevity of products lifetime warrenty
IS there an alternative to a wooden plank?
Thanks man
Det der gav mig sgu jern på, og det var endda kun en lille motor. Den slags film gør virkelig at jeg kommer til at savne min Golf D II.
Diesel accelerer ikke, Diesel opbygger fart, og det var lige det min lille Golf gjorde som jeg kaldte Holger.
Excelente
Are they not permitted to use air or electric tools?
Are we just to assume that they are installing new rings? If so what is the purpose of measuring the old ones.
👍👍👍mantaap...
And folks wonder y I take 30 minute poops?
Open displacement cilinder lyner bore & stroke es good carbon exeded in piston and rings turbocharguer stage 2 by propulsed for noxes
super
26:32 corntact
One down, several to go.
Very useful
Now that’s a piston
Very important.
link for rest videos..??
Every one should learn how to do this.
Can someone tell me how the connecting rod moves straight up and down,with no side to side motion like most all other engines I'm familiar with?
How would it connect to the crankshaft without moving side to side?
Thx
Dear Jason.See our video No. 24 - 'Diesel Technology' ua-cam.com/video/9uRNXpMc358/v-deo.html
It’s a cross head design. The crank and connecting rod are below the cross head which takes the lateral loads while leaving the the piston isolated from those forces.
Dear sir, I am working on 6s50mc.
Engine, installed in 1996, please provide me the cylinder head overhaul videos. Cylinder head is fitted with hydraulic ring and hydraulic nuts... Kindly send me the procedure for opening and tightening these nuts
How many hours will an engine run between piston overhauls?
6 months
Just found this video, your question is 2 years old however if you couldn't sleep and still wondering well the OEM recommended interval between piston overhaul is 8,000 hours. That corresponds to 320,000 miles on a car averaging 40MPH. Unfortunately my experience with those MAN designed slow speed engines is we had to overhaul more often due to various breakage before reaching the normal running hours. When that happens in the middle of the ocean in a hot region trust me the engine is not that clean nor as cold as in the video and you better be fit if you will be the one disconnecting the cross from the con rod and dismantling the stuffing box. You get literally showered with lub oil at 70-80 Deg C. The metal from the engine burns your feet through the sole of your working boots. Plus add the ship rolling side to side, 3.5 tons piston swinging under the crane, stay clear! It can be hell in Eng. Room. I also saw the piston cooling carrier coming out of the crankcase. Fun days that was... Usual time would be around 10 hours to complete the job when everything went well and with a trained Engine team. Every 1 hour or so the Captain would call you on the phone and ask if the repair is soon to be finished. At least a good Captain would bring cold drinks during the work and then would give a case of beer to the guys once we got back under way.
Mantap.
Can i have the, procedure manual?
What was the kind of gel you put on the bolts.????
Molycote for high temperatures
Sir why the skirt has branz ring like thing , for what purposes it is there
How to see procedure 913-7?
Muito boa está aula ok
Besar juga piston nya
are these engines 2-stroke?
Yes, crosshead engines are 2-stroke.
at 13:20 the locking wires at left side are applied wrong way.
Yes. Well spotted. That one on the left is lockwired backwards. Bloody apprentice!
I like it but I need see all engine stell thank you.
its funny everything is done so effortlessly, when in an actual working engine you struggle with each step
I was thinking to myself ‘look how clean their coveralls are.’ That’s my indication as to the level of reality to true working conditions. I’m no marine technician but i know a training aid from a workhorse when I see one.