Caterpillar 3406E Diesel Engine and Torque Converter Tear Down - 40 Ton Haul Truck

[@RasmussenEquipment]

The discs in that torque are supposed to be a bronze color, the color they are now shows that they are roached, they got real hot, my guess is that they ran it low on oil and burned up that torque converter. That torque is near bullet proof,

[@KT3406E]

Thank you.

[@Wasmachineman]

@@KT3406E I must be blind but at what part in the video does it show the burnt discs? The cone shaped thing at 44:13?

[@michielhuygelier6953]

@@Wasmachineman 40:46

[@Wasmachineman]

@@michielhuygelier6953 Thanks. Damn, those discs are fucked yeah. Thought it was rust at first.

[@thatwierdbilly]

@@Wasmachineman the gear i think

[@bigbattenberg]

"If I was very smart I woudn't be doing this shit to begin with." Story of my life! This guy never disappoints.

[@bmwtravel1100]

I learn more in five minutes from KT3406E than in 30 minutes from most mechanics.

[@n6mz]

47:11 "If that were the only problem" he's pretty damn smart in my book, he knows the correct grammar for subjunctive mood (it's "if ... were" not "if ... was"). And he knows more about diesels than I could ever hope to know.

[@bigbattenberg]

@@n6mz Of course, the guy is brilliant and it shows even more in his self-mocking humor.

[@smitty9733]

Define smart -- I bet Einstein wouldn't have had a clue what was wrong. Great video

[@TheBeardedMiracle]

ain't that the truth though

[@christopherweise438]

The best part about this channel is the unexpected randomness of the video drops. This is like running down the stairs on Christmas morning, and finding double the presents you thought would be there.

[@dukeboy-6645]

It's like finding 100 bucks in a pocket of a pair of pants you haven't worn for a while.

[@christopherweise438]

@@dukeboy-6645 - No shit....i was pretty much done with KZbin for the night and BOOM....this popped up in my notifications. Like turning around in your stand and seeing a 12 pointer just standing there.

[@danielmarshall4587]

VERY MUCH SO.

[@295walk]

its like getting 2 christmas dinners !

[@samsamson3623]

True that!

[@dirtriderz6881]

Nothing better than a KT3406E video on a Friday night. 👍

[@harkbelial]

There's millions of better things on Friday night.

[@alberteinstein3078]

​@@harkbelialna I'm pretty happy!

[@christopherweise438]

or any night.

[@bongkidemil4203]

@@harkbelial Name 5.

[@SamMaass-s5h]

KT?

[@andrewless4067]

Putting groves in the old seal at 19.50 to stretch it and make it easier to remove is brilliant.

[@gregwhite7957]

Yeppers, nothing better than a cold beer and KT3406 video on Friday night. Wish he would do more. Business before fun. The way everything is explained is so detailed. Thanks for another great video. Take care and stay safe.

[@weedwacker1716]

Magnificent. Your shop is so clean and organized it's scary. You could use it for a haunted house. "Where did Timmy get to?" "He was _...out of place."_

[@gullreefclub]

I worked as a mechanic for most of my life and one of my early mentors taught me that it much easier to work cleanly, neatly, and to be as organized as possible. One, ok Two main benefits your tools neat and organized makes them easy to find when you need them and easy to determine if one is missing. Additionally I learned to clean my tools away after I finish every job or at the end of the workday. The reason I do this is because quality tools are expensive and I don’t like to buy replacement tools because I misplaced/lost one. Case in point how many mechanics on KZbin have you mention the number of 10mm sockets they have lost? Myself in 37 years of being a professional mechanic I have never lost a 10mm socket or screwdriver. However I have found dozens of them over the years.

[@johnmiech3544]

Don't throw shade on yourself saying your are not "smart". You've got knowledge and skills that I would bet most mechanics/technicians can't even compare to. Love watching your videos and the simple ways you explain these complex machines.

[@Hemiheaded18]

Seeing a new KT video on a Friday night? Can't beat it.

[@grandpajim329]

👍🏻👍🏻 AWESOME TEARDOWN WITH EXPLANATION !!!!! 👌🏻👌🏻 The discoloration is very excellent and THERE WAS SMOKING HEAT IN THERE !!!! It would be interesting to see a graph on the trans oil temp, and time of day?????.... The crank alone in that engine is GOLD and well worth your invested time in the wrenching.....You got a HELL OF A MESS there in cleanup, 🤔🤔BUT we just got that intriguing wonder of what " KILLED THE CAT " 😏😏 THANKS FOR THE AWESOME VIDEO, ALWAYS INTERESTING TO "SIT BACK AND NOT SKIN MY KNUCKLES" GOD BLESS, BE SAFE!!!😍😍😍😍😍

[@geocube1898]

Best thing about your videos in my opinion: you explain how to do it, and you don't show the redundancy of filling your video with the removal/installation of every single bolt/component you remove or install. Fantastic and informative content sir without all the boring stuff!

[@dmcdow]

Thank you for taking the time to put your videos together and sharing with us to enjoy. You have knowledge and talent I wish I had.

[@Ironfireman11]

Started to get worried KT. Thought you done left us.

[@j.mangum7652]

Grumpy young man. Too much real world work to do.

[@295walk]

@@j.mangum7652 lol. great reply. always exited when notification pops in. Awesome.

[@DieseltheWhiteTailedBuck]

7 months later and nothing else has been posted...

[@Andrewlang90]

The part I enjoy most about your videos is listening to someone who knows what they are talking about, and shared it with us as well. Thank you.

[@kenellis8353]

Always enjoy learning new information about motors!!! Keep up the great videos, KT3406E!!! I’m a truck driver, by trade, but, I always enjoy learning the inner workings of a motor and what each part does!!! I know a VERY LITTLE BIT about working on them, but always make sure I keep the oil, coolant, and fuel at the proper levels!!! I’m always wanting to learn more about them, and how to keep from making mistakes that could seriously derate the performance!!!

[@pmiller7886]

The machine work on all of those parts is just metal porn... so crazy how fine it all looks... and thats after a long service life. Thanks KT!

[@technologic21]

I'm learning a lot watching these. Thanks for showing these POS from all angles, got good idea where stuff goes.

[@CarpenterConstructio]

Always have to stop when I see a new video. You never let us down with the information of CAT.

[@FIGGY65]

If you were in the big theaters I’d pay to watch your videos over ANY of the crap that’s been going on the last 15 years or so !

[@FarmCraft101]

"If I was very smart, I wouldn't be doing this shit to begin with." LOL! You are hilarious. And another interesting video, thank you.

[@merlepatterson]

Those Speedy Sleeves can be tricky sometimes, but you got the right removal method down.

[@csteinmayer71]

"You see that bolt right there, wont come off until you take that bolt out" Story of my life!

[@vm321]

Please upload another video 8 months is way too long!!! You tube is boring without your videos

[@cuttnhorse2013]

You’re pretty Damn smart in my book! I think you have a gift that few will ever know! Love you videos. Ronnie East, Tennessee

[@Drobert882]

Thanks for the show a lot of work chasing down a failure but a learning event just the same

[@Mike-xt2ot]

Another great video! I always have a great admirmation for your work ethic and knowledge. I have absolutely no clue about heavy equipment operation but if I saw that discoloration in a light duty truck I'd lean towards low fluid level at some point in the past. Of course by the time they get to me they've already changed filter and fluid and everything's always fresh and full. Probably for the first time in that vehicles life.

[@jdmccorful]

Thanks for ya "deadpan" obsevations! Love the teardowns. Thanks for the look and your time.

[@mrmiscast]

I could think of a large quanity of service techs that should watch these videos. I feel like I need to go buy a 359 Pete and ship a C15 to KT and get back a turned up C18. Seriously I enjoy the videos... Thanks for all the efforts.

[@BardofLaketown]

Dude you curate one of the best KZbin channels, hands down.

[@kmatch1]

Check the internal clutch splines the friction disks engage with. We had a case/IH years ago tie up between 2-3 gears. We wanted to make sure any problems were evident on teardown so we ran it in the field pulling a large disc while binding between gears until the exhaust pyrometer pegged, let it cool down, and repeated until we knew for sure this warranty job was worth the trip. You couldn't stand beside the tractor. On teardown the clutches still looked brand new with heat signs in the case around them. The only failed part was the splined shaft the clutches engaged on. They had miniscule knicks due to a soft metal shaft allowing the clutches to dent them around .001" for every tooth and barely visible. But the knicks were in a way they held the fiber clutches together engaged with the steels causing drag. You may not have had a slip so much as a non-release causing heat build up.

[@1rvtastic124]

I'm very impressed the knowledge you have stuffed in your brain Videos are very interesting, thank you

[@zonie1953]

I never had much interest in this big machinery ! That has all changed now . This is one of my favorite channels now . Great commentary and expertise! I now know more about this big iron than I ever thought would ! Thanks 🌵

[@toobucu9247]

Thoroughly enjoy your knowledge and passion for Caterpillar drivers. I always learn something about diesel engines watching your videos. Hope this is viable for you and look forward to more.

[@rogerlammey4750]

I never understood diesel engines, nor wanted to work on them. My brother on the other hand went to trade school for them while I went the USAF Jet Engine Mech route. Now I enjoy watching diesel mechanic videos. Thanks @KT3406E for doing this and making it educational as well as enjoyable.

[@musicauthority674]

You are really good at a first time teardown. knowing what to look for that lead to the component failure. that is definitely the sign of a top notch technician.

[@BrewCityChaser]

Love this kind of raw unfiltered content.

[@commenter5469]

Constant tension, and spraying with silicone oil, or silicone based penetrating oil helps with removal of O-ring sealed connection.

[@Megabob777]

You know it's gonna be a good weekend when KT3406E uploads!

[@garymucher4082]

When you see the huge number of parts that have to fit and work together, you realize someone had to design all those parts to fit and work together. Amazing how it all does work as well... Thumbs Up!

[@tiredofit1235]

Amazing to see the crazy engineering it took to build these monsters.

[@sjohnson1776]

Very informative. Thank you for bringing us along!

[@CARRIERGUY]

At work we just got 3 3608 and a 3512 cats. 12 is for our generator and the 3 08’s are for running compressors for natural gas! Them things are huge! Biggest ive ben around. Cool to hear run for sure.

[@irchrisb]

I worked at Cat Morton back in 2000, in purchasing, ordering friction materials. I got to tour the Raybestos plant where they made discs like that. They stamped the steel core from a coil, flattened the discs, broached the splines, heat treated, nitrided, etc. For the friction material, they made their own paper, impregnated with resin, bonded to the core, and then cut the grooves with a gang saw with 5 or more blades. It was really cool to see the process. Also, the finished friction material was a light brown, definitely not black.

[@dgear83]

The torque converter hardware that you were referring to that you were unfamiliar with is the one way clutch for the stator. The stator is only allowed to spin in one direction to assist with multiplication of torque. It takes fluid from the tc turbine and redirects to the tc pump when there is a big delta in pump vs turbine speed (accelerating from a stop)

[@alfadoofus]

Man you crack me up , " If I was smart I wouldn't be doing this " I said the same thing about working in the oilpatch.👍

[@gullreefclub]

I think anyone who works for a living has said that at some time or another. The sad part is that mentality has been instilled in us from a young are in schools and that is because education professionals look down upon blue collar jobs and workers. I was forced to find a different line of work because of a life changing injury and while I make good money and enjoy my new career which I am good at and at the top of my pay scale I still don’t make as much money as I did as a mechanic nor do I have the same sense of satisfaction

[@alfadoofus]

@@gullreefclub You do speak the truth , without people to fix the broken things we will be in a sad state . I hope you have project(s) that can keep you tied into your roots.

[@honkie247]

The thing that you didn't know what it was at 39:45 or so with the long rollers is a one way clutch. It lets the unit spin one way and locks against rotation in the opposite direction. Same as car and truck transmissions.

[@powwer123]

Its called a sprag clutch

[@KT3406E]

Caterpillar calls it a one-way clutch multiple times in the manual and never uses the word sprag. Different manufacturers = different terminology.

[@charlesarsenault9408]

They never use the word sprag because there's no sprags in there. A sprag clutch is super similar, but instead of using rollers against a wedge in the flange, there's sprags like ratchet pawls, but just work with friction against smooth flanges.. both roller bearings clutch and spray clutch do the same work in the same package, different internals.

[@KT3406E]

That makes sense. It's not a sprag clutch at all, and that's why they don't call it one. Thanks for the clarification.

[@honkie247]

@@KT3406E Quick question. On a Cat cam gear, there are round flat metal things that look like hockey pucks that fin in holes in the face of the gear. What is their purpose?

[@matthewbeasley7765]

The stator one way clutch doesn't just freewheel when the converter is locked up. When there is a big speed difference between the input and output, the stator is back driven and multiplies the torque. As the slip decreases, the stator is no longer back driven and will start spinning. That lets the torque converter transition into being just a fluid coupling with less slip. The clutch on the stator existed back in the days before locking torque converters were in use.

[@295walk]

Clever.

[@gavinjohnson3782]

Great to see you working on something new, very impressive tear down,and detective work 😊

[@chadakoin1]

I appreciate your ability to clearly explain things. I don't have any background in diesel engines, but I'm learning!

[@lightweight3908]

The legend is back!

[@rotorhead5000]

I liked that trick using the chisel to stretch the inner sleeve on the rear main seal, I'll have to remember it next time I come across similar problem.

[@gullreefclub]

If you have the room and you have a air chisel that is very controllable like a CP714 an a square headed chisel you can walk them off very easily as well.

[@markdauncey927]

That engine looked practically brand new inside! Everything was clean.

[@erniemathews5085]

Thanks for continuing my education. You explain things so well I don't sound ignorant talking to my smart son.

[@frfrpr]

Impressive product knowledge and breakdown analysis. The filming ain't bad either. Thanks.

[@thomasreeves15]

I was trying to find your career video how you changed careers and couldn't find it. I admire you for having the guts to totally change gears and do something else no pun intended

[@zedikiahh1695]

you know its a good day when KT uploads

[@marksolheim9690]

I would guess a failing lockup solenoid or caused a drop in main pressure to the lockup piston in the torque converter and it got hot because of that. The valve issues and everything else that got effected was from them not paying much attention to converter temps or just not caring. I don’t know anything about these transmissions but I work on a ton of twin disc transmissions that are the same setup and same issues. Been wrong before though.

[@gullreefclub]

Never worked on one of these “turds” (all broken vehicles are turds) but the parts and pieces that show they have been exposed to lots heat without the clutches being worn out indicates to me a fluid pressures problem. The $64 question is what caused the lack of pressure

[@TravisLaRoche]

The way you removed that lip seal was gangster

[@jacknuzzy279]

Great work big guy very informative to a layman like myself but always like watching to see how things work on complicated equipment and to see how to properly disassemble a piece of equipment the way it’s supposed to be done no cat dealer or shop is going to illustrate how each pump,filter,sending unit gear works and how to replace or repair Thanks again and will wait patiently for the next posting

[@jimsvideos7201]

Don't sell yourself short - you have a job that keeps you busy in your warm, dry, well-lit shop and that's a pretty good setup.

[@moozuke5001]

hey man. if you ever do a runaway diesel again you should add 50% petrol to the diesel and it might run hotter and explode.

[@anthonynardini4295]

I wonder where this guy got his training? I heard him refer to himself once as a “hillbilly", however this isn’t remotely true. This is a Master level mechanic with experience decades beyond his young years. Respect!

[@jimmystuckey1412]

Good job explaining why a piece of equipment cost a million bucks without saying this is why they cost a million plus

[@johndeereal1]

You are insanely smart when it comes to all things CAT! 3406. We had a 1975 Steiger Panther w/3406 what a bad ass tractor. Keep the videos commin ❤

[@sledge297]

I will give you credit dude you are smart when it comes to heavy equipment and and cat engineering and motors

[@danielw.nasuta5499]

Something to be said about peeling off that perfectly aged, crispy crunchy gasket! Love it! ❤️

[@ss-5553]

It's really a lot of work, apparently you know how to put it together, I would think so because you're a professional! !

[@Dmenbiker]

KT, morning... I thoroughly enjoy your videos... I think it's because I know so little about diesels... You express yourself well... Easy to understand and learn from... Thanks for the relaxing times... Dave

[@cyrusullmann9917]

That looked like a 1-way clutch on the stator. When you find out KT, you should make a video or something on your findings. Nevermind I wrote the comment before you finished the video.

[@aaronbauer4039]

One way trip for this truck... parting it out? Very interesting what goes into the drivetrain. Thanks for showing that in detail...

[@davidcutrumbes2148]

Your knowledge on everything is mind-blowing. Keep up the killer work.

[@maxpuppy96]

Man I learn so much from people like KT3406E.

[@robertmichel4924]

Might’ve never locked up thus generating a tremendous amount of heat in the fluid. Your videos are excellent thanks for taking the time to share!

[@luvtruckin]

KT college is in session. Learn so much from you. Keep ‘em coming and never think you’re not very smart.

[@paulpierson2137]

Thank you so much for the upload. I always really like your tear downs.

[@DavidTaylor-fx7fk]

Lockup clutch defiantly got hot. wonder if the pump that supplied oil had problems. I was a twin disc mechanic @ Great Lakes Power back in the 1990,s. Just noticed this video and watched it. Looking forward to the transmission video. Brings back old memories, Thanks for sharing!

[@nutsbolts7974]

In the 90,s I worked at Avon gear and we cut those teeth in the torque convertor housings. I believe that part # is 8551? Since your videos I have seen a lot of gears I cut in all different applications. Keep up the good work on these videos, I really enjoy them.

[@tdotw77]

🎉👍Nice to see @KT3406E back on the YTube big screen! Thanks again for all you do my man.👌👍🚜⚡💥💨🛠️🔩🔧⛓️📏⚠️🚧🚚😀🍻

[@tdotw77]

It's funny I just had a Cat commercial during this too.

[@daved6569]

This guy is awesome! So talented, a pleasure to watch!

[@richardlincoln8438]

Thank You for the time and efforts to share the information. Best Wishes.

[@honkie247]

The one way clutch in question is actually a ROLLER clutch. It uses roller bearings and ramps in the shell to engage them. A SPRAG clutch shell is smooth inside and uses dog bone (figure 8) shaped pieces held at a slight angle to engage the clutch. A bit of info for the youtube experts.

[@1stbn8thmar]

Thank you for still posting videos sir.

[@sudd2685]

Love this guys dry humor,”if I was very smart I wouldn’t be doing this shit anyway “

[@ronnieroads1253]

hey kt great to see ya back you do get stuff keep at it!

[@juanesquivel8094]

Just made my night with this

[@johnfisher7143]

Never get sick of hearing you call something a greasy piece of shit, makes my day 😂

[@turboslag]

Really like your work practice, like use wood when striking things with a hammer. So often on YT vids you see so called mechanics just laying into parts with a steel hammer, makes me wince! I only work on automotive stuff so seeing heavy plant stripped right down with explanitive narration is really interesting.

[@MetrologyEngineer]

I love how quiet the Milwaukee impacts are.

[@aaronb6727]

Thanks KT. Always worth the wait.

[@robertshelton3796]

18:55 the smartest hardest working people in this country are the ones keeping the food and goods moving on our roads man we shut down without guys like you.

[@HueToobBlows]

"All this in there" is called a sprag assembly. It allows the shaft to spin one way and then locks it from spinning the opposite direction.

[@matthewtaylor3308]

With all of the channels I watch as soon as I see one from KT I watch that first… ✅

[@robbierussell9536]

Your a good man 💯 working on CATS.. time and patience

[@DavidGrassSr]

Don´t know a damn thing about those big diesel engines, Your voice never changes ( up are down ) i sure do love to lesson to you explain how this and that works, Thousand of parts and you know where all of them goes.. I could lesson to you all day long , your one of a kind , You just don´t give a damn ! Long time follower , Texas, See Ya

[@commenter5469]

I’d like to see the suction flange for that bigger hydraulic pump, from video it seems that there’s not much room for it. Wonder whether suction is undersized, and there’s high rate of failure on those pumps due to cavitation.

[@brandon2076]

Seems like you could really use a nice set of dead blow hammers instead of juggling wood blocks and sledge hammers. Trusty Cook hammers are great, come in all sizes up to 12lb i think. I have an 8lb and 12lb and love em, i got them for really cheap from Trusty Cook's blemish inventory.

[@jtrill2]

The torque converter reached over 500 degrees F. to achieve the blue coloring. It may have been ran low on fluid or a seal was damaged not allowing pressure to build up to cause lockup, therefore getting the converter hot. Those discs had material but looked pretty crispy.

[@annechristiansen941]

Thank you very much for the video. 👍🤗👍🇸🇯

[@alexbuilds706]

another great video.. Not many of these out there with explanations and dry humor.. Thx!

[@spideybrent]

Hello from Moosomin,Saskatchewan you have great videos and great at communicating. Thanks for sharing