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.
Agree there mate,also they don’t show the captain asking when will the job be finished and told by the Mechanics to FUCK OFF ,IT WILL BE FINISHED WHEN ITS FINISHED.
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.)
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 ;-)
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?
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.
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.
@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
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
Can not found any information for inspection (measurement and clearance) Piston skirt. please advice while and reason for replacing bronze ring on piston skirt
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....!
Thank you for your question and very relevant observation. Safety is a very important aspect of engine maintenance and is always an essential focus area for MAN. As stated in the beginning of the video, the Instruction Manual always overrules in case of any discrepancies as the latest manual will always contain Safety- and Maintenance instructions according to our latest Service Experience. This video was shot over 10 years ago and today we specify, that the flat surface of the piston foot should be placed on a perpendicularly placed wooden plank to prevent any rolling movement. It could also be an option to combine both the perpendicular plank as well as the planks in the piston crown end displayed in the video; The combination of instructions and common sense will always ensure the best Safety.
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?"
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...
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.
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. 😊😊
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.
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.
I asked the Mrs how to mount the piston rod stuffing box and she directed me to Procedure 902-2 (or Video No. 32). I didn't ask her about the stern gland.
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 !
Locking wire is obsolete. It takes a lot of practice to install it correctly, even then the lock wire can break from stress or actually be severed while rubbing against a case hardened bolt head. Most locking wire is made from soft steel commonly called mechanics wire. A hefty cotter pin would be much more durable and way less time consuming to install.
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.
Protects the engine from the high sulphur content of the residual fuel used in these engines for the cylinder oil (yes, there are two kinds of oils in these engines).
Maybe because this is an MC-C engine, and those aren't fitted with a telescopic pipe? The lubricating oil goes through the crankshaft, connecting rod and piston rod, all of which are hollowed out for that purpose...
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
Agree there mate,also they don’t show the captain asking when will the job be finished and told by the Mechanics to FUCK OFF ,IT WILL BE FINISHED WHEN ITS FINISHED.
I can't tell you how often I needed to do this. Thanks, MAN!
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
Incredible dimensions and yet "simple" to repair. Access everything. I would like to see such an engine someday.
These are the people who with their precision brought most of our comforts to our modern homes.
Well I'm glad I watched that now...it's given me something to do over the weekend, overhauling my MAN marine diesel engine...
I could watch guys working all day. Doin' A Fine Job!
Man, I would eat a meal off that engine...so very clean and proper, very nice!
Thanks team ,
wonderfully explained.
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 TH-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.
Good job...now repeat for the other 9 .
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.)
You guys are really doing great job. keep going and spread your valuable knowledge....
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.
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.
Good thing they put that bell ringing in there so I know when a new procedure is starting.
Glad to see them use a proper wrench to reinstall the piston lifting fixture instead of the adjustable one.
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?
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.
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.
Beautiful ! Amazing ! So educative ! Excellent video.
@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
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
Now THAT is a huge piston!
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.
this video very good for my job on ship. thanks !
Sir why the skirt has branz ring like thing , for what purposes it is there
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
wanderful very professional job tank you
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....!
Perfect job
Is it necessary to remove telescopic pipe connection during piston removal for K-MC engines?
26:32 corntact
Why we are measuring the free ring gap of all piston ring before removing???
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"
BEAUTIFUL WORK
are these engines 2-stroke?
Yes, crosshead engines are 2-stroke.
Why not land the piston head on a perpendicularly positoned wood plank so that it doesn't have the hazard of rolling over?
11:45
-nevermind, it was answered thereafter. 😂
Thank you for your question and very relevant observation.
Safety is a very important aspect of engine maintenance and is always an essential focus area for MAN.
As stated in the beginning of the video, the Instruction Manual always overrules in case of any discrepancies as the latest manual will always contain Safety- and Maintenance instructions according to our latest Service Experience.
This video was shot over 10 years ago and today we specify, that the flat surface of the piston foot should be placed on a perpendicularly placed wooden plank to prevent any rolling movement.
It could also be an option to combine both the perpendicular plank as well as the planks in the piston crown end displayed in the video;
The combination of instructions and common sense will always ensure the best Safety.
I've never seen an engine that clean, that needed maintenance
great to see the training video. where do i take the test and start working?
Everyone loves a big piston 👍
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?"
Really helpful 👍
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!
Another add my experience piston overhaul.
Very good job, but where is the safety helmet?
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...
Why no power tools?
@9:42 secondary sub contractor actions being demonstrated
Very useful and infomative vidoe!
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.
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. 😊😊
keep up the good sir
IS there an alternative to a wooden plank?
I love this video
Open displacement cilinder lyner bore & stroke es good carbon exeded in piston and rings turbocharguer stage 2 by propulsed for noxes
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.
What was the kind of gel you put on the bolts.????
Molycote for high temperatures
Very didactic for machine students like me Thanks MAN
For exchange the stuffing box, possibly for exchange without lifting the piston (exchange inside crank case chamber)..???
23:49 ... F O U R T H W A L L B R O K E N
I will not be able to hear 'molybdenum disulfide' without cracking up!
AvE on youtube?
@@chiefaves Yes he is!
You have great knowledge.
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' th-cam.com/video/9uRNXpMc358/w-d-xo.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.
How change piston ring in enginer large and which tool use
It is hard dirty back breaking work. After years of doing it my body is in pain everyday and will be till I die.
you make it look so easy
I would like to know the price of only one piston ring ? Swiss watches precision, the size is the unic difference. Wonderfull.
I asked the Mrs how to mount the piston rod stuffing box and she directed me to Procedure 902-2 (or Video No. 32).
I didn't ask her about the stern gland.
Today is Saturday, today is add my experience. To how the piston overhaul?
No power tools???? Why??
Kept refering to screws bolts no?
Thanks MAN. 👍
Excelente video. Parabéns.
GREAT VID
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 !
Anyone notice the locking wire on the left 2 bolts is wrong at 13:27 in the video. Someone done messed up
Locking wire is obsolete. It takes a lot of practice to install it correctly, even then the lock wire can break from stress or actually be severed while rubbing against a case hardened bolt head. Most locking wire is made from soft steel commonly called mechanics wire. A hefty cotter pin would be much more durable and way less time consuming to install.
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.
they used mild steel wire wheels ??? and then they dont want the tolerances to exceed the values stated in the data sheet
Great work, very entertaining but I wish the narrater would stop referring to the bolts as screws
How to see procedure 913-7?
Lubricating oil what else does oil do aside from lubricate??
Protects the engine from the high sulphur content of the residual fuel used in these engines for the cylinder oil (yes, there are two kinds of oils in these engines).
burn for energy
It can do quite a few things... Protect from corrosion as seen here, used for hydraulic pressure, cooling, burning and oh yes...lubrication.
Christopher Isac hydraulic
Engine also has cylinder oil that must be adjusted to fuel specific s.
great video!
Every one should learn how to do this.
Very useful
And folks wonder y I take 30 minute poops?
Fantastiske fremskritt på utstyr siden jeg startet med min første MAN for 50 år siden..........
Good job
Can i have the, procedure manual?
Good job😁
link for rest videos..??
Aren't they called piston palm bolts. Who calls them screws?
very good explination
讲的很好
Beatiful, I want a job like that
Very helpful for me ,thx
I'm sorry but why didn't you mention how to suspend the telescopic pipe.
Amrit Jayaraman of course
Amrit Jayaraman7
Maybe because this is an MC-C engine, and those aren't fitted with a telescopic pipe? The lubricating oil goes through the crankshaft, connecting rod and piston rod, all of which are hollowed out for that purpose...
Niki Ptt yes sir indeed you are correct no need for hanging up the telescopic pipe as there is none on this engine
@@Slothboy0018 you are wrong.there is a telescopic pipe and you don't need to disconnect it