Rebuilding Caterpillar 966D Dozer Transmission Due to Slow to Engage || Restoration Transmission

Discovering your dozer’s transmission is on the outs is not a great feeling. Here is a look at five common problems construction machine owners run into when the transmission is starting to go, what the likely culprit is, and what to look for.
1. TRANSMISSION SLOW TO ENGAGE
This usually happens due to transmission pump issues or oil leaks. If it’s happening to you, check the oil levels, look for oil leaks, and tighten all clamps. If oil leaks don’t seem to be the problem, your dozer’s transmission pump likely needs to be repaired or replaced.
2. OVERHEATING
First, make sure air flow isn’t restricted in the radiator or oil cooler. Airflow can become restricted by dirt and other debris. Next, check for oil leaks in the transmission clutch pack and torque converter. Overheating is often caused by clutch pack problems.
3. LOSS OF DRIVE AND HYDRAULICS
This is usually caused by a flex plate problem. Inspect the engine to see if there is any debris that may be causing issues too.
4. ONLY ONE TRACK MOVES
The root of this is almost always a broken plate in the clutch pack.
5. TRACKS NOT ENGAGING AT THE SAME TIME
The side that takes longer to engage probably has an oil leak. Sometimes shaft oil control rings are the problem. There could also be a problem with seal rings.

[@Adamski727]

Every time I see videos like this it strikes me that concrete and rebar must be like gold in these country’s. They are all working in the dirt, not even the simplest of workbenches as long as the eye can see.

[@Adamski727]

I take that back, there was a workbench in there 😅 Concrete on the other hand, nope.

[@BaranTheBad]

It's intentional. You can drop heavy parts and tools all day long on a hard packed dirt floor and it wont do anything to the parts but try that on a cement floor and your gonna damage something and it much easier on the feet than a cement floor. The wester world just has a hard on for covering everything in Concreate. The Asian Squatting also means that they can get close to their work on the ground so they don't have to have a lot of work benches.

[@horstmuller7512]

Working and living in the dirt must be a religion thing.

[@scottvincent7666]

Is it possible that concrete and work benches could be taxable items?

[@nainitalism]

You prefer to stand n work we prefer to sit. Is that a problem for your holier than thou attitude

[@decoysk]

glad to see everyone has on there safety sandals

[@horstmuller7512]

Amazing! All tolerances are less then 2 fingers!

[@davetimms451]

Got to love the safety flip flops

[@kellytaylor3134]

ye the new technology invisible steel toe cap 😄

[@sambitar8448]

IMPRESSIVE, TEAMWORK, DEDICATIONS AND COMMITTED TO DO AN EXCELLENT WORK. ALL WAGES ARE WELL EARNED.GOD BLESS YOU ALL.

[@maskoko76]

Good Jobs Rebuilding transmision wheel loader Caterpillar 966D, successfull always 👍🙏

[@lo2740]

successful as it complete failure.

[@dennisbergmann1722]

Good job guys, I like when the boys are there learning. That transmission has many parts and certain direction for most. You guys have repaired many of these in the past. Good to see you keeping the parts clean. Nice work!

[@randallfriesen7797]

Got to respect these hard working people they always get it back together and never no waste good mechanics but I never see a torque wrench wonder how they do a preload on the bearings

[@rashedngadze8853]

It goes to show that torque wrenches are meant for maniacs to avoid bolt shear and plate warping during assembly. Also these guys discovered preloading bearings is a waste of time, nothing happens if its not done.

[@inthetrenches7315]

These men amaze me sledge hammer and 2 wrenches Respect my friends 🤛🇺🇸

[@itsjustme1949]

I can't believe they can remember how all the parts go together. It's pretty amazing they can do this with such limited tooling.

[@Nothingmore71]

i wonder who the hell taught them about machining and heavy equipment mechanics

[@gazza116]

one of their cleaner rebuilds,still use that magic rag.🙂

[@eighthof8]

I wouldn't have believed it, If I wouldn't have seen it. How these ambitious young men, where cleanliness is next to impossible, rebuild a sophisticated CAT transmission with basic hand tools and the ever present big hammers. Very good!! Thanks for showing us how it's done.

[@mylynne1953]

CAT charges $50K for this repair. Three Hooba Doobas in sandals with a couple of wrenches, screwdrivers, pry bars and big hammers charge $43.69.

[@1k20a]

these dudes work for the original parts they pull off lol. resale them

[@randyb3347]

This is sooooo impressive. This video just goes to show you what a really good team of men working together can accomplish. Thanks (from America :)) !

[@moisescortes2381]

Son una maravilla estos maestros, me apasiona ver sus videos. Ellos simplemente trabajan, y ya, listo.

[@akiko009]

That's pretty impressive. If I were doing it I would be very concerned about having a few parts left over at the end. And who needs torque wrenches when one has a calibrated elbow... Also goes to show that a bit of dust and grains of sand are no problem at least for some transmissions. Looking at that one bearing, it seems someone forgot to maintain fluid levels. That can get expensive. I'm surprised that it looks like they didn't replace more bearings, such as those on the planetary gears and on the clutch center gear. Someone should show them the trick for using the old bearing to install a new one. It's a lot easier on the bearing.

[@decoysk]

no torgue wrench needed. its 2 grunts for the small bolts 3 for the medium bolts and four for the large bolts..

[@josejorgequevedodominguez497]

Felicitaciones a estos maestros,cuanta experiencia junta,saludos desde la CD de MX. en America del Norte. 20 de Julio de 2022.

[@Sl20]

The kid may no have videos games but who need them when you have real hero’s teaching a real job !!!! I wish all the teenagers have vision to be someone in life specially in country’s sub ……..his must be proud of him I would!!!!!!!!!🤫

[@bumpedhishead636]

Those guys at the parts washer station have very impressive safety squints.

[@jorgemairena2289]

Hojala esos mecánicos valoren esa coordinación mental k tienen. Y esa retentiva para volver a armar. Saludos desde HONDURAS

[@enriquecoromotogarciagarci4857]

Me gusta el trabajo que realizan a los coñazo sin las herramientas adecuada muy buen trabajo los felicito a todos los mecánicos

[@christophermcqueen9268]

Someone needs to invent tables over there

[@michaeltarasenkoop2389]

I love the press to get the parts apart just three guys lift and slam it on the dirt floor !

[@georgegonzalez2476]

Hammering on bearings. clutch packs in the dirt. Bearings in the dirt. Sanding next to bearings. Bearings worn flat. Torching bearings. Not even a toothbrush available to clean the grooves. No micrometers or feeler gauges. At least they have some compressed air! If it doesn't fit, get a bigger hammer! Oh, the backaches!

[@abdekvilla]

excelente trabajo en equipo

[@alexismazuera2216]

Es admirable como desarman y arman una compleja pieza de ingeniería, pero poner engranes a punta de golpes?

[@xl000]

Anyone can disassemble a machine, clean the parts with a brush and put it back together. I’ve disassembled stuffs myself, that I don’t know how they work. Fixing the root problem is another story

[@carlnapp4412]

It's like watching a horror movie.

[@Mr_Smarty_Pants]

That drive pinion is in rough shape, ouch.

[@achmadfatkhur5965]

Super nice.. Please full cleaning video..

[@luisaparecido5885]

Parabéns 👏👏👏 Ótimo trabalho!!!!🇧🇷

[@rfelllner]

I understand there is not a lot of money going around for an air conditioned shop. But some clean work area’s would really help the quality of the rebuilds.

[@rosanapascoal7747]

Vocês sao otimos. Falta pessoas aqui assim com essa vontade pra fazer alguns trablhos mais dificil assim.😳 Brasil manda saudaçoes

[@stevodakine1]

Imagine if they had a legit shop with all the best tools to work with? They would probably have this job complete in half the time. Definitely, pros, look what they can accomplish with the limited resources.

[@livingmaga6299]

There's 5 of them on 1 transmission job that 1 man in United States does by themselves. What really impressed me was lol, no 1 was missing a Tow in video! 👏🤘

[@enriquecoromotogarciagarci4857]

Me puedes conseguir un vídeo de la transmisión de un cargador frontal Belaz 78221 él desmontaje de la transmisión y desarmado de todos sus componentes los felicito son muy buenos mecánicos

[@allenzackery1639]

Nice job 👍

[@eurokuster8374]

Ótimo trabalho em equipe.

[@cornflake73]

These workers are impressive. buy some concrete for a floor to remove some of the dirt contamination.

[@moondogdieselworks3883]

I didn’t see a single new part go into that

[@user-rl6fu5zv9y]

เรื่องงานซ่อมเก่งมาก ทั้งๆเครื่องมือทุ่นแรงน้อย

[@ZahidKhan-tj8ty]

Amazing Love from new York.

[@user-jv3cg2gh6q]

Подшипник по ходил бы ещё) у нас тут всегда делают

[@mr.jheavyequipmentoperatio9245]

great job guys

[@kristoffscuba5466]

You have the old bearings sat right there which are perfect for using to drive in the new ones, but instead you guys pound directly on the new bearings with a hammer. Suppose it keeps work coming into the shop...

[@lo2740]

if it was the only problem, lol. Why all thse pakistan indian videos are always exactly the same, these guys have no clue and do everything wrong, they also have no tools, how could a shop have no tools in any part of the world, its not about money because they are a business, they necessary charge the parts, also sine the country is very poor the good are also cheap, they could certainly afford the proper tools and work correctly. SO the only conclusion is that, in some part of the world, with certain mentality, that is just how things are done, and it suits them.

[@alexdiviaruba104]

Nice job..even without safety shoes

[@kingdommusic5456]

why dont you have a tarp over your work area to block the hot sun?

[@gek7431]

Bravi ottimo lavoro al prossimo video un saluto Gek

[@cidaomecanicapesada1160]

Muito bom ótimo vídeo

[@michaeltarasenkoop2389]

These guys are amazing no book no sofisticiuf tools just there bare hands to take apart a heavy duty bulldozer part ! Amazing ask someone in U S A to do the job ! No lift No concrete floor dirt floor most people will laugh at you ! Not even a fork lift ! Just a chain hoist ! Amazing ! So far !

[@lo2740]

there is nothing amazing in that, it's total amateur hour and ridiculous.

[@septicwhelk3654]

Any body notice that lock ring ? much abused many times of and on . Next month it will be apart AGAIN !

[@Rlfa84]

I heard that MountainDew is too aggressive to clean parts from the transmission. :P

[@larrykluckoutdoors8227]

Great job on the repair

[@benjamingonzales8292]

Great Pakistani Master he memorize all the fittings done by Komatsu"

[@ABIELYASHARAHLA]

Teamwork like a moe foe. 👍

[@LEBRAOful]

Vocês são muito inteligentes dom abençoado

[@ultra-rural]

o dom de nao morrer de fome né

[@844metalman]

Apparently rebuilding dozer transmissions requires hammers... Lots of hammers...And Mountain Dew assembly lube...

[@RVMD95]

All the sand coating the finely machined internal parts comes at no charge.

[@lo2740]

that is kebab grease inside, mixed with sand.

[@nopelindoputraperkasa5869]

Amazing best video.. awesome..! Thank you for sharing this best video.. success always greetings from traditional Indonesian gold seekers ❤️🇲🇨🌷🌼⚒️⛏️✋👍👍👍

[@masaharumaruyama6821]

👍👍👍👍👍凄い技術ですね。🙌🙌🙌✨

[@paulgibson490]

I wonder how many times the same gear train has been rebuilt and how long between rebuilds.

[@SHINGONZALES5150]

Excellent.

[@izalman]

So did we see why it was slow to engage? er no.. apart from the square roller bearing everything looked ok. Thats the beauty of the big old Cats, they can be repaired in the field with the most basic of tools, especially when you use a pair of circlip pliers as a crow bar to lift a clutch plate.... $64k question, did it run again when refitted and how well did it work..

[@chadwickalexanderjr1758]

I too was hoping to see said dozer after repair.

[@stewatparkpark2933]

@@chadwickalexanderjr1758 966D is a front end loader .

[@lo2740]

it ran for a wekk, which is quite a performance for the country.

[@georgetarabini6552]

Where can you buy those sandles

[@JessAnalysisTV]

nice skills

[@MrChubbykid1234]

THE SPARE PARTS CAN BE PUT BACK IN NEXT WEEK WHEN ALL THE UNTORQUED BOLTS FALL OUT AND IT COMES BACK IN FOR A NEW VIDEO .....LOL

[@Iflagum]

Nice job guys. How long did it take?

[@professor_thunder]

Those wrenches take a beating...literally.

[@dexterPL]

i love how they keep everything nice and full of sand

[@yusufabdrahman592]

Good ii boss 👍👍😊

[@vitaliseibert1059]

hey guys, my respect, you are good specialists but why do you always work on the floor, don't you have tables?

[@tonyking9235]

WHEN YOU BASH THE BEARING IT MAKES THE RUN MUCH SMOOTHER AND LAST TWISE AS LONG .🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣

[@lo2740]

especially when you add the sand afterwards.

[@user-lg8kp7gr5j]

How many hours did this work last? I am from Iraq 🇮🇶..

[@lo2740]

35 minutes.

[@user-ju1kd6zi7w]

Дядька который яйца чешет в кресле -это эффективный менеджер?

[@ziyodmullaqulov3079]

Кот

[@lo2740]

a tonne of sand in the bearings always helps in these countries.

[@stevenhorne5089]

When it came time to put it back together, they had no clue what bolt went where. So they didn't put the bolts in at all. That transmission never ran again.

[@masterfaster43]

Very professional work, Truly amazing engineering/production 👍

[@TheNorthsquad]

are ¥ou kidding me

[@jrondyer1049]

That previous statement was written by a very knowledgeable individual. Lol

[@lo2740]

the comment of an expert in the field, obviously.🤣 also, engineering has nothing to do with a litteral cesspool "mechanic" shop, doing everything possible wrongly.

[@axeaces2330]

Very skilled 👌

[@badarsyahyusup5252]

This is automatic transmisision ?

[@thunderbirdone8126]

Gears and axles have a limit to the load placed on them. If you have ever seen them load a truck or bus with people and things you can understand why they have a constant problem with gears bearings and axles.

[@Stephen-cr3sc]

I wouldn't even consider putting a precision component in my equipment literally rebuilt in the dirt.

[@diegoknyte]

Gollum trying to get his precious at 8:00

[@GerardoGonzalez-wn5or]

And here we are with all the extra ratchets and sockets, we never touch, and they take all these transmissions and engines apart with hand wrenches and home made hammers. Just amazing 🤔🤔

[@rbyaldrzee6657]

👍Good

[@happymann839]

Ausgezeichnet 👍👍👍👍👍

[@petemoss8625]

Enjoyed watching this. I take it the bloke sat in the chair scratching his balls was the boss?!*

[@berndnehrkorn8472]

ab 22:47 wird es wirklich interessant, solche Fachkräfte fehlen uns hier auch noch :-((

[@fionaeller7809]

Werkbank fehlt in der Bude ?

[@DEMON23027]

Святой молоток 🔨 а подшипник где лязгули ,должны были сами сделать ,новые то и я поставлю.

[@SpruceSculptures]

Jesus you would think they would at least us a bench instead of squatting and ruining knees. Crap doing a trans on a dirt floor, smh. You think they ever heard of brass for beating on steel?

[@user-qe7og2oh8l]

Браво

[@billmiller3425]

I changed a headlight once,

[@hihikoan1me579]

At bevelop west we pay a lot of money without reason.

[@fellpower]

Nice safety shoes guys....LOL - i dont want to know, how many death and injuries they have every month

[@donbrashsux]

How much do they charge to rebuild this transmission ?

[@johndonaldson3619]

Usually 3 goats, 2 sheep a half a dozen chickens.....

[@lo2740]

@@johndonaldson3619 and about 150 prayers.

[@larrykluckoutdoors8227]

I wonder what the Cat. Techs are thinking if they watch this.

[@chadwickalexanderjr1758]

Anyone who's ever rebuilt a carb on a Briggs is cringing right now!

[@denistierney4642]

The reply is not printable

[@user-wl7um5rp4h]

11:23 Is this washed with kerosene?😳

[@zomhby]

👍👍👍👍👍👍

[@Ivansgarage]

Caterpillar could learn a few things from these guys... those flat bearings might of been the cause of failure, ya think...

[@chriscur79]

The flattened edge bearings you speak of are one way clutches, a sprag to be specific

[@chriscur79]

Whoops. Just saw the flat bearings! Lol ok take the sprag comment back! The first ones on reaction center supports were sprags though!

[@itsjustme1949]

I can't believe all they put on the roller bearing is what appears to be a thin oil and no grease. Might be the reason the bearings were flat on one side.

[@stewatparkpark2933]

They are lubricated by the transmission fluid .

[@itsjustme1949]

@@stewatparkpark2933 Thanks Stewatpark, I didn't realize that's how it worked.

[@lo2740]

@@itsjustme1949 breaings flat on the side? ever heard of roller breaings lol? Anyway the problem here is that everything is done in the worst possible way, not the mountain dew kebab oil they used, because obviously all that is flooded in oil or transmission fluid once installed.

[@marelinhorj7955]

👊😉

[@muhsafrudin9720]

From pakistan ya..?