I notice no mention of a cylinder relief valve removal and reaseating. If you are taking the fuel valves out , you might as well test them, clean the tips, assuming of course you have the rig, them being common rail these days.
this is a very informative video. However, we have a similar engine (7k60MC-S) but the cylinder cover comes with bushing for the fuel injector but from this video i could not see any bushing for the fuel injector. we have been trying to remove the said bushing but its almost impossible. please any advise?
It used to be 1700 bars on our ship. Hydraulic pump helps in building that pressure up. Without that it is impossible to loosen or completely tighten the hydraulic bolts.
if it's very hard to release hyd nut, what is max hyd pressure ? on the instruction working pressure (dismantling condition) is 1400~1650 bar. It's 6S60MC-C8.2.
I think once u overhaul a cylinder head u should check the condition of liner or calibrate the liner,water connection between head & liner not shown.pressure testing of head is not done. Anyway marvelous video
For renewal of ME liner (MAN B&W SMC), do we hv to remove the jacket first or pull out the liner together with jacket or pull only the liner n leave the jacket in place ?
1) For the exhaust valve seat it is called "Grinding tool"2) For the fuel valve seat it is called "Milling and grinding wheel"3) For the starting valve it is called "Grinding Ring"
He did, just on one pipe connection that often do not conform to any spanner size and then it was a Swedish Bahco, the best, but you should always use the correct sized spanner /socket, not an adjustable.
I'm finding it difficult to understand how those little hydraulic nut removers can apply sufficient torque with out having a firm anchor. They seem to just sit on top of the studs and twist those nuts off with ease.
videoclipits those small hydraulic nut remover simply stretch the stud against the the cylinder cover thus freeing the nut so it could turn the nut with minimal effort. The video somehow miss 1 important thing on removing the nut, the hydraulic tool must be loosen by at least 3/4 turn so that when you release the hydraulic pressure on it will not trap the tool when the stretch stud return to its original length. One thing I noticed was it uses 1500 bar pressure in removing the nut which is almost double to the one I usually work with or maybe it is because they used new type of stud material on the video
Thats just the camera making it dark. Why shouldn't he be working alone, its safe enough, no heavy lifting other than by the ER crane. The lighting is quite high up in the ER but its well lit.
I did notice when he was using the hydraulic bolt equipment he was loosening the hydraulic bolt removers by turning them hand on hose connection point which to me seems like a bad habit practice longterm in respect of longevity use life of the tool better to remove a tool correctly to maximise the life use of it
I know this is a training vid but shouldn't the engineer in the training vid at least have a hard hat on his head as walking under an over head crane hook not best practice without protecting the noggin
What most idiots here don’t seem to understand. This is supposed to be a supplementary instruction video which does not substitute or replace the Manual. As a side note, air guns are great for gulling of threads and destroyed fasteners. A professional knows when and when not to use those.
You are incorrect. On an engine of that type its called a cylinder cover, as injectors are called Fuel Valves which they used correctly. Note all threads they used copperslip/ molyslip, excellent practice which I have been using for 55 years even on cars. If it moves lubricate it, if not paint it.
You are a moron. That is O-ring grease which will still be there next time the cylinder head is dismantled. It will not burn away. And only a true idiot would use copper paste on O-rings. I hope you never work as a mechanic. 😊
great video first got shown it from a teacher at college, great reference.
helping marine engineers around the world..God bless you
Drain cooling water???
Well after a while its hard to remove exhaust valve studs,i am using more then 1000 nm and its still not coming out.
I notice no mention of a cylinder relief valve removal and reaseating. If you are taking the fuel valves out , you might as well test them, clean the tips, assuming of course you have the rig, them being common rail these days.
The oil return pipe - we use it to close exhaust valve by high pressure oil, instead of using high pressure air, right?
I think now I can dismount all parts for overhauling
Pure class and elegance of MAN 🔥
Thanks baccha
this is a very informative video. However, we have a similar engine (7k60MC-S) but the cylinder cover comes with bushing for the fuel injector but from this video i could not see any bushing for the fuel injector. we have been trying to remove the said bushing but its almost impossible. please any advise?
5:00 How can pressure be this much high? 1500 bar!!
It used to be 1700 bars on our ship. Hydraulic pump helps in building that pressure up. Without that it is impossible to loosen or completely tighten the hydraulic bolts.
Grinding compound in a blind hole always worries me. Imagine the nightmare of leaving some behind.
This is so helpfull thank you,
if it's very hard to release hyd nut, what is max hyd pressure ? on the instruction working pressure (dismantling condition) is 1400~1650 bar. It's 6S60MC-C8.2.
I think once u overhaul a cylinder head u should check the condition of liner or calibrate the liner,water connection between head & liner not shown.pressure testing of head is not done. Anyway marvelous video
Md. Abul Bashar
After closed in&out water cooling valves,cooling water I think must be drain first before open cyl.head.. 😁
That was very helpful..thank you very much
pressure test not done?
For renewal of ME liner (MAN B&W SMC), do we hv to remove the jacket first or pull out the liner together with jacket or pull only the liner n leave the jacket in place ?
you need to remove the jacket
Super super super great video.
how to pressure test the cylinder head
FELICITACIONES EXCELENTE TRABAJO
19:19 what's the name of grinding tool, how to spell it correctly? I can't find it in google translator! (((
1) For the exhaust valve seat it is called "Grinding tool"2) For the fuel valve seat it is called "Milling and grinding wheel"3) For the starting valve it is called "Grinding Ring"
@@MAN-Energy-Solutions Thank You very much! I'm just lern english... )
Never use ajustable wrench...
He did, just on one pipe connection that often do not conform to any spanner size and then it was a Swedish Bahco, the best, but you should always use the correct sized spanner /socket, not an adjustable.
What is the name of the tool that turn the nuts?!
hidraulik jacks
I'm finding it difficult to understand how those little hydraulic nut removers can apply sufficient torque with out having a firm anchor. They seem to just sit on top of the studs and twist those nuts off with ease.
videoclipits those small hydraulic nut remover simply stretch the stud against the the cylinder cover thus freeing the nut so it could turn the nut with minimal effort. The video somehow miss 1 important thing on removing the nut, the hydraulic tool must be loosen by at least 3/4 turn so that when you release the hydraulic pressure on it will not trap the tool when the stretch stud return to its original length. One thing I noticed was it uses 1500 bar pressure in removing the nut which is almost double to the one I usually work with or maybe it is because they used new type of stud material on the video
Girlie Padasas
Thanks for the explanation.
Girlie Padasas In my engine we definitely used around 1200 bar.
1500 Bar. Thats over 20000 PSI. Holy smokes!
Over 22,000psi actually, stretching those massive studs enough to loosen the nuts by hand. I'm very impressed.
@@n6mz If one of those studs snapped, that jack would probably end up going through the roof. lol
Possibly into orbit.
why is he working alone and somewhat in the dark?
Thats just the camera making it dark. Why shouldn't he be working alone, its safe enough, no heavy lifting other than by the ER crane. The lighting is quite high up in the ER but its well lit.
very goog working ...thank you
Better mounting cooling water pipe by air gun.
they never herd of air impacts???????????????
I did notice when he was using the hydraulic bolt equipment he was loosening the hydraulic bolt removers by turning them hand on hose connection point which to me seems like a bad habit practice longterm in respect of longevity use life of the tool better to remove a tool correctly to maximise the life use of it
Thank you so much sir
torque
I know this is a training vid but shouldn't the engineer in the training vid at least have a hard hat on his head as walking under an over head crane hook not best practice without protecting the noggin
Exelent
nice
ME and MC fullform
What most idiots here don’t seem to understand.
This is supposed to be a supplementary instruction video which does not substitute or replace the Manual.
As a side note, air guns are great for gulling of threads and destroyed fasteners. A professional knows when and when not to use those.
Just for the record that is called a cylinder head in engineering jargon not a cylinder cover😀😀
You are incorrect. On an engine of that type its called a cylinder cover, as injectors are called Fuel Valves which they used correctly.
Note all threads they used copperslip/ molyslip, excellent practice which I have been using for 55 years even on cars. If it moves lubricate it, if not paint it.
I luckily mechanic
17 05 !!!! wroooong! no lub oil! high temp. cooper paste! lub oil will burn out fast!!!!! cooper paste will last 20 000 h + but still good vid!!!!
Yobaniy v rot! This oil is only for installing. It is not movable part. Where did you study?
Не позорь нашего брата!
You are a moron.
That is O-ring grease which will still be there next time the cylinder head is dismantled. It will not burn away. And only a true idiot would use copper paste on O-rings.
I hope you never work as a mechanic. 😊