Although I'm never going to work on diesel engines this size, I've watched several of these videos and found them really interesting. No valve springs, or cam shafts, all done by compressed air.
scowell.....yes, you are right. The hydraulic opening of the valve was left in my inkpot when I wrote the comment. The closing of the valve is passive while the opening MUST be immediately active. This system sure saves a lot of camshaft and rockers and rollers and pushrods.
great video, but with the safety valve, you should torque the valve body on the test fixture to, as this ensures the spring is under the same pressure that it would be on the exhaust valve itself, so the setting point will match the usage setting.
Are air tools or electric tools not allowed? Impacts and ratchets mainly. I figured maybe it's because they might make a spark in a dangerous environment
I was surprised to see that they do not instruct about slightly oiling the ´´o´´rings before installing. they could use silicon grease that it´s non flammable for the air cylinder.
derived from an element source such as 5 oleum or glycol, or compressed air, negative pressure and hydrogen chloride or steam. many things you can do with nitrogen, hydrogens, etc ..... many application such as catalyst powders, enritched irons for mettulurgy etc ......
Nice, i just realized my mistake for overhauling exhaust valve today, thank you for this video, will you please upload also the proper grinding of valve seat & spindle. Thank You
Depends who made the engine. I had this issue. If you ask MAN denmark then you have one. If its STX china then you dont... long story short, you should have one
Hii..I think the air is supplied with L.O for lubrication purpose of the air spring piston which moves up & down and bit of air is also supplied to the guide bushing which will result in cooling & lubrication of the bushing.
Very professionally made and simplified.Easy to understand for the boys appearing for their examination.
Sanjoy Chakrabarty writing my marine diesel exam tomorrow
sir, can you please let me know , why oil is filled in air cylinder, is this for the lubrication between spindle and guide.
Well defined procedure in a sequential manner. 👍👍👍.. Thanks for the video..👍👍👍
can u prepare a video for stuffing box in place overhaul ie inside main engine without taking piston out.
Although I'm never going to work on diesel engines this size, I've watched several of these videos and found them really interesting. No valve springs, or cam shafts, all done by compressed air.
Looks like the valve is held up by air, and pressed down by hydraulic. I agree... fascinating!
Jim Prong.....yes, it took me 14 minutes to figure out that these valves were pneumatically control...GEEEZUS...!!!
I believe the valve is controlled hydraulically, with a pneumatic spring.
scowell.....yes, you are right. The hydraulic opening of the valve was left in my inkpot when I wrote the comment. The closing of the valve is passive while the opening MUST be immediately active. This system sure saves a lot of camshaft and rockers and rollers and pushrods.
Nagaraju
great video, but with the safety valve, you should torque the valve body on the test fixture to, as this ensures the spring is under the same pressure that it would be on the exhaust valve itself, so the setting point will match the usage setting.
well done please upload some turbocharger overhaul video
Thank you so much for sharing this video.
Very nice and helpfull video to those seaferer who wants to become an officer someday.
How can we reach the instruction book thanks in advance
nicely explained, easy to understand
Are air tools or electric tools not allowed? Impacts and ratchets mainly. I figured maybe it's because they might make a spark in a dangerous environment
I'm having a doubt,
Why lub oil is filled before placing the air piston in air cylinder...??
after mounting it on the main engine, it may not be lubricated at the first move so you have to add lub oil inside the air cylinder to avoid damage
@@kultigintolunaykaman1240 thanks bro.. 👍
I was surprised to see that they do not instruct about slightly oiling the ´´o´´rings before installing. they could use silicon grease that it´s non flammable for the air cylinder.
It is done bro at 00:56
How many man hours is necessary to complete one exhaust valve?
So the images depicted in the video are used in the enritchment of structured sodiums and finite powders.
derived from an element source such as 5 oleum or glycol, or compressed air, negative pressure and hydrogen chloride or steam. many things you can do with nitrogen, hydrogens, etc ..... many application such as catalyst powders, enritched irons for mettulurgy etc ......
Nice, i just realized my mistake for overhauling exhaust valve today, thank you for this video, will you please upload also the proper grinding of valve seat & spindle. Thank You
whic all connections must be removed at the beginning of the video?
this complete video will give explore idea to out manage vessels. thanks
Elmer Estrella c
Why don't you measure the diameter of air cylinder? In some case, it was worn out and cause air leak and the valve stem can't close.
if exhaust valve opens earle or be late opens. how to regulate it?. thanks before
very good video tank you
Sara therotical clear ho gaya
Useful material 👌
No gasket between the valve bushing and the valve housing?
Depends who made the engine. I had this issue. If you ask MAN denmark then you have one. If its STX china then you dont... long story short, you should have one
sir , can you give a favor ? can i ask you why we need to put lub. oil into the air cylinder ? what is the purpose?
Hii..I think the air is supplied with L.O for lubrication purpose of the air spring piston which moves up & down and bit of air is also supplied to the guide bushing which will result in cooling & lubrication of the bushing.
Post ME engine exhaust valve overhauling video please.
It’s the same
Thanks😊
well done !
if u can upload working animation for exh valve, hw it is operating ie opening and closing. it will help me a lot please
Please make some videos on manoeuvring diagram
Why do we put oil in air cylinder?
saravana kumar ; to soften cylinder wall.
very useful. thank you so much
Thanks
anyone know how to find the data sheets
THANKS
“Bottom piece”? you mean valve seat. “Valve seat”? you mean valve face. “Eye roll”, haha
Nice
Very interesting. that, will help for will be very helpful for the the small engine that i bought
14:16 Whoop! Whoop! Crescent wrench! Real mechanics don't use them! lol
not true
Nice