This Kubota Was Nearly TRASHED By A DROPPED Valve Seat!
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- Опубликовано: 26 сен 2024
- Today we're working on a tiny little Kubota D902 indirect injection three cylinder diesel that a customer brought us after a catastrophic failure involving overheating and consequential dropping of a valve seat.
While the engine block originally appeared to have no damage, it seems there's more than meets the eye...
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Clean up guy working unsupervised after hours, luckily it didn't get messed up. love to see the care put in to these engine repairs
Guess he knew the boss would review the footage? 🤷🏿♂️
The cleaning guy definitely needs a raise!
Thought the same thing! Cleaning guy goin rouge!
It's surprising what you can get people to do if you give them a donut.
@@KenFullman😂😂
So nice to see stuff being repaired instead of thrown away. :D
It’s hard to do with that small stuff. A lot of times it’s cheaper to replace then repair, if it’s even possible to repair.
@@shaunkelly9053 Jupp
@@shaunkelly9053 You can get a used one for less than a rebuild but it's probably clapped out on it's last leg anyway. So there's a place for rebuilds given their reliability. Same thing with junk yard car engines. A lot of times they have been overheated and just waiting to fail.
When I priced out rebuilding my truck engine it was actually about $1k less than buying remanufactured. Assuming you reassembled it yourself. So it really comes down to if you want to spend the time or not.
That’s a $6k engine to replace with new. $4-5k on a remanufactured.
I agree, reducing waste is always nice
A machine shop in our area and a friend allowed me to tour his facility. In close proximity to ALL his machinery was a sign “If it is ALMOST RIGHT it is wrong”. That sign and it’s message has stuck with me throughout my working career. The message is applicable in ever facet of life. I believe you practice the message in every one of your videos. 🤗
Its*
Very nice work, and a very ethical approach to standing behind your work.
It’s nice too see the cleaning guy showing his stuff after hours. He’s quite a teacher. Thanks for sharing
I realize now this specific repair is only feasible because it is RUclips content, and the revenue generated covers the cost you couldn’t charge the customer. Still pretty cool to see a throw away block fixed.
I have NO DOUBT the sleeve repair will last a long, long time! Excellent content!!!
I really like this format of video showing more detail of the individual repair compared to voice over verion, edited versions. Really like the extra "shop talk" with you and dad. Love your work btw.
I’ve worked on hundreds of Kubota engines in a generator application. They are incredibly durable and dependable. I’ve seen them run 30,000 hours with only water pumps and a few rear main seals being replaced.
Kabota has had full parts availability for those for a long time.
This the type of company we need to support not like those boys in green.
What on earth are you doing letting the cleaning guy mess with machines?! I love you guy's videos and the morals behind your work. Enough so that I am seriously thinking about driving the 10+ hours from Oklahoma to have you do the machine work on my SBC.
I bet it’s totaly worth the time driving.
I don’t think they will have to worry about a refund. We had the same size block sleeved twice within a couple hundred hours due to poor air filter design and quality. Still going strong after 300 + hours.Keep up the good work and Stay Safe.
I rebuilt a 5.9 Cummins 24 valve, in 2015. My son bought a truck from someone we knew took very good care of their vehicles.
Truck had 96K miles on it.
The owner went out one morning to start the truck, and it started knocking. He shut it off right away. Nobody could figure it out. We got it thinking it was an injector knock.
It had dropped a valve seat on cyl 4.
The cylinder had a couple of small grooves, so we had it bored.
Had the injectors bench tested & only one was ok.
In 2016, we were working in the Johnstown Greeley area. ( My brother owned DCP civil at the time. Orange letters that read DCP. No longer in business )
I spoke to a tech at Dodge in Greeley. He said an injector hung open will cause the valve seat to crack. Due to quenching, I guess ?
We converted to a Fass fuel system & tank sump system when we installed the rebuilt engine. Ran awesomely afterwards.
That sleeve installation cost less than a new block, nice work. I got a AMC 401 out of a 75 jeep cherokee I want you to save for my jeep build.
Stuff like this and the E type disaster are genuinely so satisfying to see repaired to a high standard and going out the door to do another life cycle .
Rebuilding my first engine with guidance from many videos from you folk. Thank you for a sight glass into what is what. Many dozens of appreciations.
By the looks of it the cleaning-guy has the time of his life working with his son!
Its a beautiful thing to see!❤
Keep em videos coming!👍 filming on his own allso! Nice!👍💪❤
Back in the early 1970's my older brother and I delivered newspapers...Denver Post/afternoon...Rocky Mountain News/before school. In the winter mom would allow us to use her station wagon on Sundays. Neither of us old enough to drive. Both papers were delivered on Sunday mornings, plus winter in Aurora is FFFnn nasty and cold. The fee for using her car was one dozen Winchell's Donuts. One dollar and one cent.
I really enjoy watching you guys videos, they are informative but I guess what I enjoy the most is the relationship between father and son. My father is gone now to his rewards but although I cared a great deal for him and him for me I didn’t have the relationship that you two do. Keep up the great work, God bless.
Had a contract with MCAS Cherry Point back in the 90s sleeving I-6 blocks for the aircraft tugs... everything had to be std bore for military logistics reasons. At any rate, the money was good but it was a lot of work and even more work dealing with Govt contracting that turned out to not be worth it in the end. We were doing these with a Van Norman 944.....LOTTA WORK. Funny story but one time they brought me about 15 blocks another shop did for them, that when they tried to assemble the engines they wouldn't turn over... turns out other shop didn't step the bottom of the bore and pressed the sleeves all the way down into the main webs...😅
Oops 😂
That story made me smile, still am 😁
How did you fix them?
@@Conservator. Hacked the bottom of the sleeves with a Die grinder until the crank counterweights cleared..... made sure they understood that those blocks were not right but far as I know none of them ever failed.
@@billyj.williams2341 Fantastic! 👍
Another tractor engine saved from the scrap heap! Excellent job as always!
I worked on Northern Lights generators. The 3 cylinder units 12 Kw units haf a similar block sd thebone uounsre working on. After many overhauls we came to the conclusion that it was cheaper to replace the complete engine rather than overhaul it toTransport Canada and US Coast Guard requirements. Greatbwork on installation of the sleeve, especially gorbthe cleaning man.
love the work you put into saving some of these catastrofies
I have 2 of these d902 and 2 d1105 i picked up to rebuild out of light plants, interesting to see how thick the cylinder wall is.
I alway taped the deck off when sleeving. Just so you won’t have to blow all those chips out of the water jackets. Done thousands of Kubota sleeves and that’s how we did them too, with the exception of 2 cut on the parent bore. Excellent work.
This is interesting. I had to have the same thing done to a Yanmar 3TNV76 out of a JD tractor. It was the center cylinder just like that one. The rod bolts had worked their way loose and it knocked the bearing out and the cylinder wound up destroyed from several other issues that the engine had. We were able to stay with new std bore pistons and rings, new crank and rods. I bought a new head since the original had a crack between the valves on #2 cylinder. Just got it back from the machine shop and will be putting back in this week.
I hope everything went ok. Did it?
(I’m just curious).
I believe the cylinder was only cracked on the outside of the bore. The inside hadn't actually started cracking yet like bending a paperclip back and forth. Eventually, just before it breaks one side will crack open. I think this is what the dented bore did! This is why the mag didnt show a crack until the actual cracked material wasx cut away!
Very interesting video. Great machining practices and a recyclable cardboard swarf guard. I liked the precision manual impact liner press. That final change in note, you just know it’s home! Keep going guys!
Thank you for your "open book" approach to your work diving in to show us how you work out your tolerances and give us an insight on how these jobs should be done.
Most places keep their "trade secrets" you guys are their allowing us to look over your shoulders.
Quick questions?
Why do you not use a hydraulic press to press the liners in and do you freeze them before inserting them?
Curious.. Cheers
Very good display of experience and Excellence!! Thanks for sharing this!
Love the interaction between you and Dad. So professional, thoughtful and relaxed...
As a retired 45yr experienced maintenance tech, Loctite 620 is a new one for me. I have attended 2 in plant Loctite seminars, and they never showed us that flavor. For the green Loctite's, we used 680, 609, and 294.
I really enjoy watching your videos. Very informative and fun to watch. Very well done guys 👍🏼
Yes it was a lot of work for a little motor but it made for some great video content. Some people such as myself are very interested in the repair process. Thank you for taking the time to make your videos.
Back in late 1970 I bought international truck , it had a van hauler for flour company, it had a blown cylinder, my local machines guy decided he wanted to try over bore cylinder area and put a liner just like diesel rig. It actually worked for many years with not one issue.
Another superb recovery job done well... Couple of comments, you could have used a dye penetrant spray to find that crack in the cylinder wall rather than mag flux. Also why are you beating liners into the block with a sledge hammer on your precision boring machine bed????? Especially when you have a very nice hydraulic press a few feet away?. Cleaning guy needs a reprimand on that..
Why corrupt the set-up on the boring machine to knock one sleeve in?
Liquid Nitrogen would be the way to go to deep freeze the liner for an easy slide in fit!
JIM ❤
Love the effort you do to save a engine block and refund the customer if the sleeve doesn’t work that’s integrity 👍👍👍
Love watching you guys work. True masters of craft. It’s almost therapeutic. Thank you
Am no mechanic, but i love your work and i never miss any of it. Now, out of curiosity, why not use liquid nitrogen to shrink then fit the sleeve?
Expensive, dangerous to handle. Still requires press or hammering after install because as the temperatures equalize the sleeve will shift up. Can’t move forward with machining right away because tolerances will be off due to temperature, so adds time to the process. There are instances where liquid nitrogen makes sense but for one sleeve it has very little benefit. We’ve used it in previous videos.
@@JAMSIONLINEthank you, it makes sense now
@@JAMSIONLINEFair enough, though I've had good luck with nothing more than canned air sprayed upside down, much easier on the old body
I used to work with my pop.......it warms me watching you guys ...thank you n god bless 🇺🇸
You guys are amazing. I love how you work together as father and son!
Got a love how people that haven’t been doing something as long as you have are all of a sudden the experts on what tools to use and not to use like your tape measure like 4 1/2 inches on a tape measure is different than 4 1/half inches on a board gage or something like that. I ran into the same thing with my experience in the trucking industry as a driver for over 33 years.
I could seriously watch your videos all day! Thanks for sharing
My magna-flux experience was with a machine that put enough current through the leads that you could actually damage a component with the electrical arcing. Sorta was like an an over-powered defibrillator.
You two are always informative. I love your calm nature.
Love this channel and miss working in a machine shop. Last week, we're building a "race motor" degreeing the cam and dialing the valvetrain. This week, yeah we're sleeving a Kubota lawn tractor engine that our customer grenaded.
An excellent episode!!! These are very nice small industrial grade engines.... I used to work at a mine, that had several light towers mounted on trailers, that were powered by these Kubota 900cc 3-cylinder diesel engines... Reliable and extremely efficient power that is used to drive 480 3-phase generators!!! What ever it costs the customer, these engines are worth every penny spent on them...
The workmanship and quality of the parts , tooling & equipment, and your detailed inspection process is absolutely second to none... I'm considering sending my equipment to You people for work like this!!!
I served my mission in Utah. Every time I hear the clean up guy speak, I get a bit nostalgic for the old days.
Nice job, fixing up that cracked block.
You guys are the best. Keep up the good work. High five 🖐️
It is reassuring to see the level of craftmanship in this process. Who would want to be able to do all this.
That is the cleanest shop floor I've ever seen. That and your guy's hands don't have the "permanent" grease/oil dye on them. Wish I lived closer because I have a small block chevy 350 I'd love for you guy to go through.
What’s going to happen when these older people retire? So much knowledge and experience. Great job.
You guys are absolutely my favorite channel. Your pops is a wealth of knowledge and I'm envious. lol
Love that you're guys of integrity.
Kubota repair parts are very expensive. Good job fixing this block.
Absolutely awesome Tradesmen with impeccable business ethics. Very uncommon these days .
Lovely work as always, that cleaning guy is really coming on.
Im a mechanics apprentice and this is really cool to watch
I enjoy your guys channel. I think that Crack wasn't obvious because the Crack originated from the outside. It seems the crack started forming from the outside and was working its way inside. And the inside was just a dent because the Crack didn't go all the way through the last few thousand of the inside surface of the cylinder. That's prob why the powder wasn't sticking to the Crack originally. AWSOME content brothers.
Not sure if this shop is in the USA and if the old chap is American, but if they are... This is what it means when you hear America was made and maintained on the backs of honest, reputable and hard working folks like him...
Always love the work you pair do, especially out of pocket donuts 🍩 😂❤
Shoutout from a fellow Coloradan, born and raised 7th generation. Love your videos
I only watched the first part yesterday - you guys must have been listening.... Excellent work as always & good to see this one repaired instead of being scrapped
I believe that a simple and unassuming manner of life is best for everyone, best both for the body and the mind.
Gentlemen, This is not a throw away motor. It's a very reliable diesel engine that runs for many hours. Thanks for fixing the block. What did the customer do about the cylinder head ?
Take care. Roland
Love watching you both working to such precision, to see your dad swing a full on sledge hammer to send home the sleeve was fun. Best wishes to you all from the UK. Regards Keith.
I really like the content you guys put out. The variety is awesome.
Top notch work once again. Thank you for sharing your time with us.
Love watching your videos. Very informative and it shows the side of engine building most don’t see.
you guys do good work. thank you for the video
Yall gotta get the locks changed!!!
Got the cleaning guy sneaking in weekend shifts
These are tough little engines. I have never seen one torn down.
Wow, I haven't seen a Winchell's Doughnut in decades! Brings back fond memories being a kid in the 80's and in Utah.
I am amazed the spindle on that machine is ridged enough to make heavy cuts.
i LOVE WATCHING YOU GUYS WORK, i USED TO WATCH A SHOP HERE IN NORTHERN WYOMING HIS SHOP HAS BEEN CLOSED FOR MANY YEAAAAAAAAAAARS THE OWNER PSSED A FEW MONTHS AGO.
love how you asked "can we try to magna "fuck" it now I rewound 3 or 4 times for the good laugh lol
Lol I swear I said fluck 🤣
@JAMSIONLINE I went back and I can't tell for sure I'm going with thanks for the good laugh! lol
Glad I'm not the only one who caught it 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
You guys lol. You guys should be proud of yourselves in accomplishing everything you've done. I have been watching JAMSI videos for a while now. I love everything you guys do. Keep up the good work!
I agree, The sleeve was a good call. Thanks for sharing...
So much effort put into a throw-away engine. At least they were throw-away at the time. Crazy. getting older makes me see these things in a different light. Yea, they were new when i machined the things but 30 years hence, they're not available in new form. Kudos.
They probably saved it because new engines probably have annoying electronics and smog devices.
it seems like, the dent cracked the wall on the back side, but the crack didn't make it all the way through to the combustion chamber. it was sufficiently close/deep that when you bored out for the sleeve, it exposed the crack. the metal discoloration caused by coolant makes sense, and was the tell tale that Something Fishy was afoot. I bet the motor would have run for a while with the oversized pistons, but at some point in the not too distant future would start eating coolant/fouling that cylinder.
I am curious though... was sticking the liner in say a freezer ever considered, to aid in sleeve installation? I'm just curious to hear your reasoning on not chilling the sleeve. I know some do, and some don't, and it's interesting to learn why different methods are chosen.
good job, lots skill demonstrated here.
Fascinating video. It's all starting to make more sense as I keep watching. Very intriguing. 🤓 Thank you for posting.
You guys are second to none! Great video!
I could never be a machinist, it's so impressive the work you do
Really great job! Love it to see.
Nice job. I once met a fellow who told me he was a boring mill operator; I replied that if he'd take up a hobby and read a book or two, he could be an interesting mill operator.
That was great guys I love the sledge/press. Thanks
You had me at Chips Ahoy and a DeWALT 20v impact!
Nice job to the cleaning guy. As for the Kubota parts not as big a problem as you may think, Kubota has that sort of in the bag because I don't know of any aftermarket suppliers of Kubota engine internal parts.
Interesting ! And it was a labor of love ! Just like everything you do ! Thanks for sharing !
Love the tape measure calibration. Great work!
Chips Ahoy! I APPROVE!!!! Good work on the block too. LOL
As a Tool & Die maker for 45 years I have sleeved many different types of tools and breathed many different types of metal at seventy-six have not suffered any long term effects you problem solve methodically with forward thinking, like checkers you have to think ten steps ahead!
Wow the cleaning guy has come a long way, it’s almost like he can refinish that whole block himself
I'd like to see if a wet mag would show the crack easier but definitely looked cracked or at least looked weird after you made a couple cuts
Dye penetrant would be my go to. But it’s moot because sleeving it is the only cure.
How dare you tempt me with a donut 😂
I’m gonna go get one right now 🤣
Clean up guy is da best!
What happened to the stroker motor?
New video next week I hope
I loved the look on your dads face when you said you bought those with your own money 😂😂😂😂😂
Hey! Good use of the pendulum press there!
Really wish I had a machine shop like yours close!!! I have zero luck with our local shop, but it's my only option.
You guys are the best.