Back in the early 1980's I worked on drilling rigs in a natural gas field. One rig was built in 1942, all mechanically driven. The 2 main engines were huge V12 Waukesha diesels, I loved crawling around that thing doing the maintenance.
Manufacturing is far better these days But no one does any scheduled maintenance these days Just run it till it dies I mean we should prob be changing the injectors on all engines at 2000hrs but no ones going to do that, everyone's running them to 5000hrs till they die and drop the tip into the chamber and fuck uo everything else then blame the manufacturer And don't forget in the 1980s that engine was only 40yrs old So stuff made in the 1980s still running today has done just as well and there's alot of 80s machines and cars getting around
Their is one account of a maintenance crew on a ship allegedly forgot a maintenance crew member was inside a ship's engine block seeing no one told him to come out they sealed the maintenance entry port and fired up the engine later reporting a missing Man he much Likened unto early history torture such as the brazen bull 🐂 was Roasted alive exposed to pressure's positive and negative vaccum and searing Heat until dead it makes one wonder 🤔 if the crew punished him for some odd trespass against them?
Wow, just seeing all the cuts and angles of shots, I can't imagine how much time it takes to film all of this. Thank you for doing this chief. I also see how hard these guys work. It's tough work and obviously long hours. I often wonder how long our car engines would last if they got this type of care! :)
As a mechanic and mechanical engineering student - forever. There's no reason what so ever that any car built in the last 70 years can't get a million miles on the odometer. All it takes is paying attention to your vehicle and proper maintenance. Both preventative and otherwise. Never think your oil change can wait, Always do it early. let your engine warm up before you ever take the parking brake off or put the car in gear. Don't forget the little things in your owners manual everyone ignores. Change trans fluid and filter every 75k miles. Change gear oil in your diffs every 90k. Wheel bearings I tend to do around every 100k. Flush your trans, brakes, power steering, and coolant systems every time they're serviced. Do an engine flush every 3-10 oil changes. Change brake fluid every 2 years. It's expensive, and adds up quickly to an expensive mess to keep track of. If done properly however, on a good car, a million miles is just finish the break in.
@@StrangeTerroryep,exactly I hate when people say nowadays cars suck because they are made out of "plastic" "not real material" etc. They just dont give enough attention,nothing changed in cars,the only thing that changed is every manufacturer wants more horsepower so if you are not using your engine in right conditions it will die yes.But wirh regular check,change and normal useage?It will go for a loooong time And there is a 1% faulty product always,but thats small as fuck
Brings back memories of changing injectors on UK railway locos. One of my jobs was testing and setting up injectors on a Hartridge testing rig. we used Fucious oil as a test liquid as it had the same properties as fuel oil but without the hazard of possible skin problems.
Thanks chief, I really like these tech videos, very interesting seeing the details on the big ship systems, and how you folks keep it all running. You are true professionals. Safe travels!
Well, it is an engine that comes from the factory with walkways on both sides, and also with 3 levels of them as well, plus ladders. With hatches for inspection, that allow you to walk through, and see the engine from the inside as well without needing a borescope.
Thank you for making these episodes. I only speak for one sub, but all the technical things fascinate me. I would go down to my local merchant marine school right now, tonight. I don’t think they’re interested in a 65 year old. Too bad. Your world is very cool for a gear-head.
back in the day, the chief sat in his cabin and checked the fuel consumption. the real work was done by 2nd eng. Never let the chief touch any tools or controls...
Thank you so much for these videos...I'm a car machanic but still wounderd how the parts look and maintenance is done on them ...much respect and admiration...may the wind always be in your sails my good sir
I did not realize until today how nice and well equipped your ships workshop is. Some machine tools along with the standard tools and test equipment one would expect to find in such an environment. Nothing more satisfying to see a well trained crew in operation.
Thanks for sharing.... The average guy wouldn't otherwise get an opportunity to see the inner workings of such a large engine. I admire the sheer amount of work that must be involved in servicing such heavy engine components. The average car offers nothing as a comparison to the impressive difference in size.
I have never seen a torque sensing device like that. It's brilliant and so simple! It takes up a lot of space if you compare it to a truck engine but in this application it's both user friendly and present for between service checks. Thank you for making these videos.
Your Channel is good psychotherapy Chief. You are doing lots of people a great service with your excellent videos. You are inspiring many reminiscencers, as well as educating mariners and aspiring mariners, and also landlubbers 😊.
I would LOVE to be a marine diesel engineer! As an auto mechanic, I'm constantly replacing entire assemblies and components because they can't be rebuilt. It gets kinda boring, so I'm always jumping at the chance to rebuild instead of replace. Fantastic work!
I think this is the first time I have seen a torque wrench used in your videos Chief 🙂 . This looks like one of the quicker jobs that need doing on a regular basis.
Awesome stuff Chief, question the tools you guys use such as the injector puller and the lapping tool is that custom built by you guys or do you get it from a manufacturer? Keep the maintenance videos coming love them. Thanks Chief.
Really fascinating video. Maintenance tasks are my favourite to perform on vessels granted I have the luxury of performing them in a shipyard and only occasionally at sea. I never get the chance to participate in the more in depth procedures on individual systems as it's outside my scope of work unless it's structural works. It's really interesting to see though, please do share more in future
I'll just say this. Drag teams get the car in pits, dissassemble the engine COMPLETELY and reassemble it all in just a few hours. If you had a team of well seasoned mechanics, you could get a major service done on one of these engine in less than a day.. filters, oil, injectors, anything that doesn't need a massive lift. And possibly even that.
As a Cadet, our teacher held a flaming rolled up newspaper about 3 meters from an injector. The injector was pressurized and the fire ball was truly impressive.
I would invest in some Impact wrenches to speed up the job. That would leave some time for a cold beer. Looks very hot down there. Throw in some rough seas and you have your work cut out. Cheers and happy sailing on that old tub.
Couple of questions.1) do you shut down the engine for the six hours it takes to change all of the injectors. 2) if you don't aren't you worried about running the engine lean. 3) do you carry an extra injector for every injector.
That's wild that it's lapped in situ. That would cause so many problems in a smaller engine, but with a big engine you get big tolerances, so it's acceptable.
In a smaller engine like a Detroit Series 60, you just pull the injector cup and replace it along with the injector. Sealing is done with soft copper washer, so no lapping required. Make sure the orings on the new injector are installed correctly, no nicks or cuts, and oil them before reinstalling the injector. I once had an issue with one leaking exhaust gas into the injector cup, right from the factory, one of the orings was missing...
I had an old 1940s navy book how they would even show the smelting metals in electric furnaces and casting pump housing etc of parts on-board the ships workshop when they didn't have the parts available and in the middle of nowhere..unbelievable stuff.. I've done a bit of this as a hobby and found it fascinating reading.
Nasa domestic ako peru ayos to chief nakaka relate ako hihi pag babaklas ng f.i parang mas mahirap sa mga engine ng domestic astig jan sa malalaki soon makaka experience din ako jan
Chief, I have enjoyed your videos for over three years. Here is a suggestion. Have you guys cut the rage you use for maintenance in squares of 35 to 40 cm. They will be easier to use, and it will save rags.
@@kevm7815 I don't think you can pull out an injector while the engine is running at full speed though, the pressure of the air blasting up thru the cup would make this job super dangerous and impossible to clean and lap the injector cup mating surface properly. Sure, on ships with hydraulically actuated exhaust valves you could hold the exhaust valve open longer to kind of act like a compression release on a lawnmower engine, but you there's no way to stop scavenge air from being blasted into the cylinder you're working on every time that piston hits bottom dead center and the piston uncovers the scavenge air ports. While the ship is underway at "Navigation full" speed, the scavenge air pressure is crazy high compared to even a supercharged Dodge demon.
@@brnmcc01 We have engines now that have control gear to actually shut down cylinders in turn in a set sequence, so a 9 cylinder engine at slow speed can operate effectively as a 4 cylinder engine, these big engines when turning very slowly on 9 cylinders use very little fuel and it can be difficult to actually get the cylinders to fire properly, so by working as a 4 cylinder, more fuel is injected into less, so helping the cylinders to fire effectively, run smoother also helps with the emissions as well.
A comment and a question: Had I known about this job field as a kid, and had I known where my natural interests would eventually take me, I would have enjoyed being a ship's engineer. Great video, Chief! Now, about your name: I understand that a mako is a type of shark. Why do you capitalize "MAKO" and then use a lower-case "i" at the end? Is your name Makoi and you are stamping the shark image on top of that? If so: very clever. Or is there some other reason for the lower-case "i" at the end? Please explain. If you have already, please link to that older video. THANKS!
Now that’s an injector!! Love these tech videos chief. Question: why do the engineers wear white overalls. They’re dirty within 5 minutes after starting there shift. I would think dark grey , dark brown or even black overalls would make the guys look ‘clean’ a bit longer ! Thanks :-))
2 ปีที่แล้ว +2
These throw-away overalls are made of Tyvek, and Tyvek is white
Tradition mainly, they can be all colors now. Originally on steamships the boiler suite was white cotton, white reflects heat from an open furnace, also cleanliness, to keep them whiteish they need washing frequently, a clean cotton boiler suite if driven into a bad wound is less likely to cause a bad infection, no dyes either. Remember we can be weeks away from a doctor or hospital. also frequent washing removes the smell of sweat. We still prefer cotton even if colored, as in a flash fire it doesn't melt, it scorches, but doesn't melt into the skin.
Hey, when you guys are done with that injector puller, can I borrow it for my Volkswagon? LOL. Seriously, that was one awesome presentation! Almost like a training film. I was trying to guess the torque specs for the injector, and, OMG, there it was, right on the wrench! Great job.
Chief: Doing an equivalent job on land in the USA, locks and tags would have to be applied to the fuel pump and the valve to that cylinder, as well as to the main engine. Do you use similar procedures?
Amazing how you can explain all this. Do they engineer the systems for easy access to parts? They don't do that with modern cars but I bet they are more sensible with ships.
While I haven't worked on slow speeds my guess is that there is a smaller injector for use at lower loads as the larger injector at low load would normally create a mixture that's too rich.
Hi from uk Chief MAKOi👋👍 great to see another service interval upload, I love watching you and crew maintain!👍 great job by the crew💪👌 am just curious do you have a yellow check engine light😂😵😂😂😵 (just kidding I know you do😂) I wonder how much you atomize at every fire cycle tho (probably half 1/3of my cars fuel tank(😂😂) lol have you ever had a engine failure at see? How did you get round problem if so? and hope your fourth got his new title from cadet on his test from couple uploads bk 👌👍 thanks for your time and be safe see you soon👍👋
Hi Chief! That video sure did bring back a few memories. Hey, thanks for the instruction, you just never know when you might be on the side of the road, needing to overhaul an injector! LOL
Thanks! Would be nice if today’s real estate investment trusts (REITs) ran their business as a chief engineer of a ship responsible to carry cargo. Another rent increase, why because they leveraged buys from rent of complex I live in expecting rates will never increase, at same time neglect maintenance on their established property, yet many blame inflation on government spending. Enjoy your videos while at work USPS. A few Philippines work at same office I do.
Nice video. Please share more of this type of maintenance tasks. I expected the injectors to be electronically controlled and also to have a crash-able copper washer at the bottom, interesting. Any reason why these type of engine does not?
Very interesting, so there' no copper seal between the the injector nozzle and the seat as in automotive injectors? Are these pintle valve injectors? How do you mitigate grinding paste entering the cylinder? Thanks for the video, from an ex long time auto mechanic (VAG). Edit: I guess the torque value is corrected for the extra radius applied by the crow's foot wrench?
I would guess that on an engine that size the lapping paste is about as bad as the carbon particles and bunker oil crud lol And I would expect that the torque specs include the offset specs for the proper crow's foot wrench. Though it suppose the exact torque isn't as critical as head bolts or something, so maybe it just assumes that most crows foot wrenches are about the same length.
I was worried about the grinding paste too. Torque on a body is irrespective to where it is applied. You need a fulcrum to convert torque into a force. The fulcrum in this case is the rotational axis of the fastener and that is constant. It is indeed remarkably counterintuitive that the geometry of the wrench is irrelevant.
@@Tadesan The torque wrench measures the torque at its fulcrum which is different than the fulcrum of the crow's foot wrench. However because they're close to each other compared to the length of the torque wrench it doesn't really matter
@@Tadesan you missed the fact that adding the crow's foot wrench adds a second fulcrum, and so the torque that the wrench sees is different than the torque that the nut sees. Imagine if the crow's foot wrench were 3 feet long from centerline of the fastener axis to centerline of the ratchet axis, and you can see how the leverage of the added length will reduce the force that the ratchet sees. It will also change the force the ratchet sees depending on whether the crow's foot is straight out the front, in line with the ratchet (maximum leverage), or at a 90 degree angle to it. So while the geometry of the wrench doesn't matter, the length of each section of the levers used matters very much, and using a crow's foot wrench adds a second lever and a second fulcrum as compared to using a single wrench or a socket, and so adds a lot of variability to what the fastener sees compared to the amount of force applied on the end of the handle.
Time to train your guys to use the correct socket to set that torque, using the adjustable nut rounder is not the right way, as those nuts clearly show rounded corners from long use of that tool. That spanner with set and ring end, probably 24mmAF, should be in the tool case already, and available to them. As well get a few crow foot spanners for the union ends, they will make undoing those unions easier, and slip over the pipe and then down, giving at least 4 contact points to grip the hex of the nut, so lessening it distorting. Adjustable spanner is great for emergency use, but for this kind of work you really should have the right tools in the set, as after all a broken nut will cost you a lot more than the cost of the nut to replace it.
Back in the early 1980's I worked on drilling rigs in a natural gas field. One rig was built in 1942, all mechanically driven. The 2 main engines were huge V12 Waukesha diesels, I loved crawling around that thing doing the maintenance.
They don't build anything like that any more. Today it's planned obsolescence.
Manufacturing is far better these days
But no one does any scheduled maintenance these days
Just run it till it dies
I mean we should prob be changing the injectors on all engines at 2000hrs but no ones going to do that, everyone's running them to 5000hrs till they die and drop the tip into the chamber and fuck uo everything else then blame the manufacturer
And don't forget in the 1980s that engine was only 40yrs old
So stuff made in the 1980s still running today has done just as well and there's alot of 80s machines and cars getting around
Their is one account of a maintenance crew on a ship allegedly forgot a maintenance crew member was inside a ship's engine block seeing no one told him to come out they sealed the maintenance entry port and fired up the engine later reporting a missing Man he much Likened unto early history torture such as the brazen bull 🐂 was Roasted alive exposed to pressure's positive and negative vaccum and searing Heat until dead it makes one wonder 🤔 if the crew punished him for some odd trespass against them?
Where can I find this account?
Every time I see these engine rooms I reflect on the pride and attention to detail. The crew must really care.
Love watching the "Mechanicals" of a big ship. The size and mass is just incredible.
and you dont want to drop it on your foot either.
Over 50K people watching a video on fuel injector maintenance. Must be 50K mechanics... like me. Thanks Chief.
Wow, just seeing all the cuts and angles of shots, I can't imagine how much time it takes to film all of this. Thank you for doing this chief. I also see how hard these guys work. It's tough work and obviously long hours.
I often wonder how long our car engines would last if they got this type of care! :)
I second that. It is a very responsible job for responsible people.
For ever
4-evah
As a mechanic and mechanical engineering student - forever. There's no reason what so ever that any car built in the last 70 years can't get a million miles on the odometer. All it takes is paying attention to your vehicle and proper maintenance. Both preventative and otherwise.
Never think your oil change can wait, Always do it early. let your engine warm up before you ever take the parking brake off or put the car in gear. Don't forget the little things in your owners manual everyone ignores. Change trans fluid and filter every 75k miles. Change gear oil in your diffs every 90k. Wheel bearings I tend to do around every 100k. Flush your trans, brakes, power steering, and coolant systems every time they're serviced. Do an engine flush every 3-10 oil changes. Change brake fluid every 2 years.
It's expensive, and adds up quickly to an expensive mess to keep track of. If done properly however, on a good car, a million miles is just finish the break in.
@@StrangeTerroryep,exactly
I hate when people say nowadays cars suck because they are made out of "plastic" "not real material" etc.
They just dont give enough attention,nothing changed in cars,the only thing that changed is every manufacturer wants more horsepower so if you are not using your engine in right conditions it will die yes.But wirh regular check,change and normal useage?It will go for a loooong time
And there is a 1% faulty product always,but thats small as fuck
Brings back memories of changing injectors on UK railway locos. One of my jobs was testing and setting up injectors on a Hartridge testing rig. we used Fucious oil as a test liquid as it had the same properties as fuel oil but without the hazard of possible skin problems.
Thanks chief, I really like these tech videos, very interesting seeing the details on the big ship systems, and how you folks keep it all running. You are true professionals.
Safe travels!
Chief you are the best teacher anyone could have if having interest in the life at sea.
It's amazing how large the parts are, especially compared to automotive/light truck!
Well, it is an engine that comes from the factory with walkways on both sides, and also with 3 levels of them as well, plus ladders. With hatches for inspection, that allow you to walk through, and see the engine from the inside as well without needing a borescope.
As a retired trawlerman who was the one that worked on the engine as we the seat in the wheelhouse, these vids fascinate me so cheers 👍✌️🇬🇧
Great video! My job has absolutely nothing to do with ships or engineering, so I have no idea why I find this stuff so fascinating.
Even with all the high tech available these days, it still takes guys with wrenches to keep everything running smoothly! 👍👍
The same can be said a hundred years ago, and will continue to be said in the future.
Love those old style wrenches Chief Makoi proper tools aye could eat dinner off that engine.
Thank you Chief, love this type of episode!
Thank you for making these episodes. I only speak for one sub, but all the technical things fascinate me. I would go down to my local merchant marine school right now, tonight. I don’t think they’re interested in a 65 year old. Too bad. Your world is very cool for a gear-head.
I love seeing all the tools you guys use. Some of the specialty tools are neat
I agree on the tooling quite different than us snap-on users
Can you imagine the cost of a snap-on spammer big enough for those pipes 🤣 house mortgage per spanner.
Did you see the bow on that jacking tool?
Someone has had to apply some serious pressure at one stage to remove an injector.
Greatly appreciated observation brother
Can you imagine a Snap-On / Matco / Mac, et al tool boat pulling up to ships in harbour or anchorage areas??? LoL!! 🤣
Always the best, most informative videos from Chief MAKOi, no matter what the subject of the day!
back in the day, the chief sat in his cabin and checked the fuel consumption. the real work was done by 2nd eng. Never let the chief touch any tools or controls...
Quick easy job worked on the same engine we usually cover the injector body in MoS2 never had an issue getting them out.
Or Coppaslip!
Big diesel, BIG injector! Informative video, enjoyed it.
Thank you so much for these videos...I'm a car machanic but still wounderd how the parts look and maintenance is done on them ...much respect and admiration...may the wind always be in your sails my good sir
(retired captain)⚓⚓You guys are awesome thanks for sharing⚓⚓
Thank you, Chief. Your straight forward informative style with no introductory fluff is appreciated.
Your Engineering Rooms look great !
Clean, organized and bright.
I did not realize until today how nice and well equipped your ships workshop is. Some machine tools along with the standard tools and test equipment one would expect to find in such an environment. Nothing more satisfying to see a well trained crew in operation.
Thanks for sharing.... The average guy wouldn't otherwise get an opportunity to see the inner workings of such a large engine. I admire the sheer amount of work that must be involved in servicing such heavy engine components. The average car offers nothing as a comparison to the impressive difference in size.
And today, much to my surprise I had a lesson in cargo ship maintenance. Great video.👍
Thank you Chief. Educational as always. Be safe.
I have never seen a torque sensing device like that. It's brilliant and so simple! It takes up a lot of space if you compare it to a truck engine but in this application it's both user friendly and present for between service checks. Thank you for making these videos.
Good job of engine crew , thank you chief for all
Your Channel is good psychotherapy Chief. You are doing lots of people a great service with your excellent videos. You are inspiring many reminiscencers, as well as educating mariners and aspiring mariners, and also landlubbers 😊.
Thank you for your wonderful definition with clear repair video.
Thanks Chief, great video.
I would LOVE to be a marine diesel engineer! As an auto mechanic, I'm constantly replacing entire assemblies and components because they can't be rebuilt. It gets kinda boring, so I'm always jumping at the chance to rebuild instead of replace.
Fantastic work!
Very interesting, and great work by all the maintenance team.
Very high precision devices.
Thanks for sharing.
I think this is the first time I have seen a torque wrench used in your videos Chief 🙂 . This looks like one of the quicker jobs that need doing on a regular basis.
Interesting video as usual Chief, having loaded grain before and getting told to change sides. It would be interesting to see how its calculated
Thank you for posting interesting informative videos Chief
this is great stuff. I love your channel. I think this kind of content exceeds what you would find on t.v. even during tv's glory days.
Awesome stuff Chief, question the tools you guys use such as the injector puller and the lapping tool is that custom built by you guys or do you get it from a manufacturer? Keep the maintenance videos coming love them. Thanks Chief.
They are all from manufacturers 🔧
Really fascinating video. Maintenance tasks are my favourite to perform on vessels granted I have the luxury of performing them in a shipyard and only occasionally at sea. I never get the chance to participate in the more in depth procedures on individual systems as it's outside my scope of work unless it's structural works. It's really interesting to see though, please do share more in future
Another extremely interesting video.
Thank you for sharing Chief . It helps a lot
Very helpful sir, keep posting more videos on engine and components.
Thank you ❤
Thank you Chief great video.
First I watched you and found a new perspective on this type of work, then I watched Mr Ballin and he made me terrified of ship engines 😂
Good video. You must be proud of your crew.
man i was already writing a comment asking how many injectors there are. thankfully i watched until the end ;)
I'll just say this. Drag teams get the car in pits, dissassemble the engine COMPLETELY and reassemble it all in just a few hours.
If you had a team of well seasoned mechanics, you could get a major service done on one of these engine in less than a day.. filters, oil, injectors, anything that doesn't need a massive lift. And possibly even that.
So cool to watch i legit make these injectors at work i work as a machineist for MAN so its rly cool to see how they are changed :)
As a Cadet, our teacher held a flaming rolled up newspaper about 3 meters from an injector. The injector was pressurized and the fire ball was truly impressive.
Those spring-loaded torque indicators are pretty slick.
I've never seen them before..
Can't stuff up..
I am 3rd eng and I am really enjoying your videos
I remember doing that on the FM OP 38 1/8 and PC 2.5 Colt... miss them days
I would invest in some Impact wrenches to speed up the job. That would leave some time for a cold beer. Looks very hot down there. Throw in some rough seas and you have your work cut out. Cheers and happy sailing on that old tub.
Couple of questions.1) do you shut down the engine for the six hours it takes to change all of the injectors. 2) if you don't aren't you worried about running the engine lean. 3) do you carry an extra injector for every injector.
You can't change the injector with the engine running! The engine always runs lean, it is a diesel. Multiple spares carried. 👍
That's wild that it's lapped in situ.
That would cause so many problems in a smaller engine, but with a big engine you get big tolerances, so it's acceptable.
In a smaller engine like a Detroit Series 60, you just pull the injector cup and replace it along with the injector. Sealing is done with soft copper washer, so no lapping required. Make sure the orings on the new injector are installed correctly, no nicks or cuts, and oil them before reinstalling the injector. I once had an issue with one leaking exhaust gas into the injector cup, right from the factory, one of the orings was missing...
Great tutorial. Thank you.
Thanks for sharing Sir
Can you please do a ship’s workshop tour
I had an old 1940s navy book how they would even show the smelting metals in electric furnaces and casting pump housing etc of parts on-board the ships workshop when they didn't have the parts available and in the middle of nowhere..unbelievable stuff..
I've done a bit of this as a hobby and found it fascinating reading.
Not much changed memories of mid 1970's with BP Tanker Co
Chief, i need request from you, maybe next time explained air compressor 1 stage and 2 stage, what different works, what usually used in ship
Nasa domestic ako peru ayos to chief nakaka relate ako hihi pag babaklas ng f.i parang mas mahirap sa mga engine ng domestic astig jan sa malalaki soon makaka experience din ako jan
Chief,
I have enjoyed your videos for over three years. Here is a suggestion. Have you guys cut the rage you use for maintenance in squares of 35 to 40 cm. They will be easier to use, and it will save rags.
Thank you for this video sir😊....
Great stuff Chief. Can your engine operate with one cylinder inop or would the vibration/imbalance be too great?
my thoughts also
Yes you can cut supply to one cylinder but at a lower load
Yes you can turn off cylinders in big ships for maintenance while the rest are working.
@@kevm7815 I don't think you can pull out an injector while the engine is running at full speed though, the pressure of the air blasting up thru the cup would make this job super dangerous and impossible to clean and lap the injector cup mating surface properly. Sure, on ships with hydraulically actuated exhaust valves you could hold the exhaust valve open longer to kind of act like a compression release on a lawnmower engine, but you there's no way to stop scavenge air from being blasted into the cylinder you're working on every time that piston hits bottom dead center and the piston uncovers the scavenge air ports. While the ship is underway at "Navigation full" speed, the scavenge air pressure is crazy high compared to even a supercharged Dodge demon.
@@brnmcc01 We have engines now that have control gear to actually shut down cylinders in turn in a set sequence, so a 9 cylinder engine at slow speed can operate effectively as a 4 cylinder engine, these big engines when turning very slowly on 9 cylinders use very little fuel and it can be difficult to actually get the cylinders to fire properly, so by working as a 4 cylinder, more fuel is injected into less, so helping the cylinders to fire effectively, run smoother also helps with the emissions as well.
A comment and a question: Had I known about this job field as a kid, and had I known where my natural interests would eventually take me, I would have enjoyed being a ship's engineer. Great video, Chief! Now, about your name: I understand that a mako is a type of shark. Why do you capitalize "MAKO" and then use a lower-case "i" at the end? Is your name Makoi and you are stamping the shark image on top of that? If so: very clever. Or is there some other reason for the lower-case "i" at the end? Please explain. If you have already, please link to that older video. THANKS!
Now i want to know too!
its a common filipino nickname. sometimes spelled makoy. nickname for ferdinand or mark or something
Thanks Chief 😊
Now that’s an injector!! Love these tech videos chief.
Question: why do the engineers wear white overalls. They’re dirty within 5 minutes after starting there shift.
I would think dark grey , dark brown or even black overalls would make the guys look ‘clean’ a bit longer !
Thanks :-))
These throw-away overalls are made of Tyvek, and Tyvek is white
Could a downside with Grey/Brown/Black overalls be that it will be harder to see when they get too dirty and need to be washed or swapped out? / B.
@@mbo191 An additional downside with grey/brown/black is that it would make the wearer harder to see.
@@beeble2003 - You are absolutely right, I didn't think about that. / B.
Tradition mainly, they can be all colors now. Originally on steamships the boiler suite was white cotton, white reflects heat from an open furnace, also cleanliness, to keep them whiteish they need washing frequently, a clean cotton boiler suite if driven into a bad wound is less likely to cause a bad infection, no dyes either. Remember we can be weeks away from a doctor or hospital. also frequent washing removes the smell of sweat. We still prefer cotton even if colored, as in a flash fire it doesn't melt, it scorches, but doesn't melt into the skin.
Hey, when you guys are done with that injector puller, can I borrow it for my Volkswagon? LOL. Seriously, that was one awesome presentation! Almost like a training film. I was trying to guess the torque specs for the injector, and, OMG, there it was, right on the wrench! Great job.
Chief: Doing an equivalent job on land in the USA, locks and tags would have to be applied to the fuel pump and the valve to that cylinder, as well as to the main engine. Do you use similar procedures?
Yes. I just forgot to shoot a clip of that.
Amazing how you can explain all this. Do they engineer the systems for easy access to parts? They don't do that with modern cars but I bet they are more sensible with ships.
They can do that on modern cars if you want it the size of a ship.
Are there two fuel injectors per cylinder for redundancy or are both required for proper operation?
While I haven't worked on slow speeds my guess is that there is a smaller injector for use at lower loads as the larger injector at low load would normally create a mixture that's too rich.
cyl displacement is large, otherwise it would need one very big heavy injector. two smaller ones can do the job
Great video! I want to donate a ratchet wrench and a set of sockets to you boys
Very interesting, thank you.
Gotta love lapping compound.
all this took half an hour? impressive.
Thank you chief
Nice video👍
Chief Makoy may Idol
You must have a fantastic range of tools onboard.
Thanks Chief
Hi from uk Chief MAKOi👋👍 great to see another service interval upload, I love watching you and crew maintain!👍 great job by the crew💪👌 am just curious do you have a yellow check engine light😂😵😂😂😵 (just kidding I know you do😂) I wonder how much you atomize at every fire cycle tho (probably half 1/3of my cars fuel tank(😂😂) lol have you ever had a engine failure at see? How did you get round problem if so? and hope your fourth got his new title from cadet on his test from couple uploads bk 👌👍 thanks for your time and be safe see you soon👍👋
I still cannot wrap my head around how this big spacious room is in a moving vehicle...
Great video, well done. Do you know anything about brakes? 🤣
Hi Chief!
That video sure did bring back a few memories.
Hey, thanks for the instruction, you just never know when you might be on the side of the road, needing to overhaul an injector! LOL
Hearing Filipino words "lagyan mo ng langis ah..." ( Put oil on it)... Kabayan!
Thanks chief
big stuff is easier to work on not like diesel pickup you cant see injector good vid chief
Thanks! Would be nice if today’s real estate investment trusts (REITs) ran their business as a chief engineer of a ship responsible to carry cargo. Another rent increase, why because they leveraged buys from rent of complex I live in expecting rates will never increase, at same time neglect maintenance on their established property, yet many blame inflation on government spending. Enjoy your videos while at work USPS. A few Philippines work at same office I do.
Thanks!
Very interesting.
pa shoutout next video idol makoi..😊😊
god bless 🙏🙏🙏
U r great ❤️
Nice video. Please share more of this type of maintenance tasks.
I expected the injectors to be electronically controlled and also to have a crash-able copper washer at the bottom, interesting. Any reason why these type of engine does not?
Very interesting, so there' no copper seal between the the injector nozzle and the seat as in automotive injectors? Are these pintle valve injectors? How do you mitigate grinding paste entering the cylinder? Thanks for the video, from an ex long time auto mechanic (VAG). Edit: I guess the torque value is corrected for the extra radius applied by the crow's foot wrench?
I would guess that on an engine that size the lapping paste is about as bad as the carbon particles and bunker oil crud lol
And I would expect that the torque specs include the offset specs for the proper crow's foot wrench.
Though it suppose the exact torque isn't as critical as head bolts or something, so maybe it just assumes that most crows foot wrenches are about the same length.
Those look like pressure activated injectors, like the type Mercedes used until 1991 or 1992.
I was worried about the grinding paste too.
Torque on a body is irrespective to where it is applied. You need a fulcrum to convert torque into a force. The fulcrum in this case is the rotational axis of the fastener and that is constant. It is indeed remarkably counterintuitive that the geometry of the wrench is irrelevant.
@@Tadesan The torque wrench measures the torque at its fulcrum which is different than the fulcrum of the crow's foot wrench. However because they're close to each other compared to the length of the torque wrench it doesn't really matter
@@Tadesan you missed the fact that adding the crow's foot wrench adds a second fulcrum, and so the torque that the wrench sees is different than the torque that the nut sees.
Imagine if the crow's foot wrench were 3 feet long from centerline of the fastener axis to centerline of the ratchet axis, and you can see how the leverage of the added length will reduce the force that the ratchet sees.
It will also change the force the ratchet sees depending on whether the crow's foot is straight out the front, in line with the ratchet (maximum leverage), or at a 90 degree angle to it.
So while the geometry of the wrench doesn't matter, the length of each section of the levers used matters very much, and using a crow's foot wrench adds a second lever and a second fulcrum as compared to using a single wrench or a socket, and so adds a lot of variability to what the fastener sees compared to the amount of force applied on the end of the handle.
Nice video 👍
I noticed the absence of ratchet wrench & sockets... But you have adjustable wrenches which my mechanic mate calls "chrome hammers"
Every good machanic has two...
Metric and imperial....
Interesting video well filmed!
Does it matter if a little lapping compound falls into the cylinder?
Time to train your guys to use the correct socket to set that torque, using the adjustable nut rounder is not the right way, as those nuts clearly show rounded corners from long use of that tool. That spanner with set and ring end, probably 24mmAF, should be in the tool case already, and available to them. As well get a few crow foot spanners for the union ends, they will make undoing those unions easier, and slip over the pipe and then down, giving at least 4 contact points to grip the hex of the nut, so lessening it distorting.
Adjustable spanner is great for emergency use, but for this kind of work you really should have the right tools in the set, as after all a broken nut will cost you a lot more than the cost of the nut to replace it.
Yep, as cadet marine engineer we we were never allowed to use shifting spanner. Big trouble if you were cought carrying such a tool!😬
Somebody get these guys a socket set.
Hey @Chief MAKOI, can you do a video or a couple of videos about the worst weather you have faced, the biggest emergency you have faced etc.?