Transmission FAIL: Why You Shouldn't Get Stuck in the Snow

Here's a teardown on a failed U151E automatic transaxle from a vehicle that got stuck in the snow.
Automatic transmissions work on the principle of planetary gearsets to achieve gear ratios. One of the three components of the gearset must be held stationary using friction clutches. The friction clutches are rings made of alternating metal and friction bands that lock up when hydraulic fluid pressure is applied.
When vehicle gets stuck in the snow, a typical driver's reaction is to rev the engine out to try and get the wheels some friction. This may cause the transmission's fluid to overheat, since the wheels turn at a very high speed in first gear, and a transmission cooler (if equipped) can not function when the vehicle is stationary. Furthermore, most drivers may also consistently rock the vehicle back and forth to free it from the snow. This cyclic loading on the clutches wear it down very fast as the fluid warms, and the friction clutch material can no longer hold the planetary gearset from rotating. The transmission is no longer able to power the vehicle since it cannot engage the correct drive ratio.
In this video a 2006 Toyota Camry 3.3L V6's U151E 5 speed automatic transmission is taken apart to explore the carnage of this failure. The vehicle had 360,000km on it. For the follow up related to this failure, please see these videos:
Blown transmission symptoms:
• Stuck in Snow = Blown ...
Transmission replacement:
• How to Replace a Trans...
Trying to save the transmission:
• Can Stop-Slip Save thi...
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[@kclefthanded427]

This really tells you that there is no such thing a lifetime fluid

[@landshass2849]

There is, it actually means the lifetime of the factory warranty. After that you're on your own.

[@fun_ghoul]

@@landshass2849 Warranty claims are a PITA. Better off just changing the fluid.

[@kevinbarry71]

Yes there is; it's just that it's a short lifetime and at the end of it you need a new transmission

[@inspectorjavert5563]

There should be regulations requiring transmissions to be serviceable with a dipstick and drain plug.

[@LordOfSilense]

@@inspectorjavert5563 Anybody who is capable of servicing a transmission knows that the dipsticks don't do anything.

[@xXxLolerTypxXx]

Very interesting video. The more automatic transmission teardowns I watch from you, the more I'm getting behind how they work.

[@speedkar99]

I have videos describing how they work. This was more of a teardown and analyze

[@cecilhosein4387]

Wow! Mankind Really invented intricate and complicated stuff!

[@speedkar99]

For what reason...

[@ralfoide]

A winch on a corolla... I want to see that 🤣 Really neat explanation of the automatic transmission and its clutches. All the engineering that went in designing these is amazing.

[@speedkar99]

It sure is neat. And I love to teardown carnage and try to figure out what went wrong

[@Angel_the_Bunny]

I have a fun story about getting stuck in the snow! When I was a teenager I had a manual Toyota pickup I used to drive around the back yard for fun. I occasionally took my sisters boyfriend out in the truck too. He was quite a bit older, maybe early 20s or so. If I would get my Toyota stuck in the snow in the winter I could rock it in gear to try and get it unstuck. You know, drive forward or back as far as you can, hit the clutch, let it roll back a ways then dump the clutch and push forward hoping to make some progress. Anyway I was at school one day and I come back and the sisters boyfriends dodge pickup truck is stuck out back in the snow. OK, I thought ill get it out real quick. I put it in reverse, no engagement.... Put it in drive, no engagement... huh... He had gotten it stuck and tried rocking it back and forth but it was an automatic so apparently he was shifting between R and D while on the gas trying to get it unstuck like how I did with my manual transmission. Needless to say he shredded that tranny.

[@speedkar99]

Awesome tale

[@mr.anonymous3103]

My advice for anyone. Change engine oil with synthetic at 5k miles. Transmission fluid and filter change every 50k miles. And it will last a lifetime with such simple things.

[@pliedtka]

The older Hondas or Mazdas wouldn't even survive 50k miles on single 50k fluid change. 30k is what Honda fluid change interval was until they switched to ZF transmission. Small tranny, limited fluid capacity, therefore more frequent fluid change interval. But you're right, most trannies need 50k miles ATF change intervals.

[@speedkar99]

I change my transmission fluids once a year, since it barely drains a third of fluid through the oil plug

[@superwag634]

@@speedkar99I change the fluid every 10,000 since it’s only a third of the fluid which comes out. That means after 4 changes, there’s only 20% of the old fluid remaining. And I do this while I own the vehicle. Seems to work well for a small cost of $20 of fluid every 10,000

[@SilverTippedArrow101]

Honestly dude, in another life you would have made a great comedian! I love all of the rag humor and when you overemphasize on hardware amounts. Love all of your videos

[@speedkar99]

Haha Always gotta have the rags handy for a transmission teardown. Can never drain all the fluid

[@johnraley5713]

The inside of valve bodies always look like they were created in a giant ant hill. 😂

[@speedkar99]

Yes ..or the inside of a brain

[@dolssondko]

Holy hell - the driver must have been giving it the beans. Would love to have seen that! As always - awesome teardown my friend.

[@fun_ghoul]

_My milkshake sends all the cars to the yard_ _and they're like, one hundred a ton..._

[@speedkar99]

🙈

[@justchris846]

"She's not gonna need that small size anytime soon" LOL

[@speedkar99]

Lol Maybe someday

[@harrycee656]

I suspect, based on the mileage, it was already worn out and was already slipping slightly. I don't see how spinning the wheels in one direction in the snow, even for a period of time, would cause the clutches to burn if it's already in gear. Clutches and bands only slip during shifts. The alternative is that the user rocked the car back and forth continuously. Additionally, they may have shifted while the wheels were still spinning while they were rocking the car.

[@dil6969]

Agreed. If the clutches are already locked, the only thing that should be building any heat during wheel spin would be the torque converter.

[@poopsie117]

I think its likely they switched from 1st to reverse (or vice versa) while the wheels were still spinning out. i uh, mightve done that by accident sometime in the past and then smelled a lil hint of ATF from the air vents ... yea dont do that kids make sure your wheels arent spinning oops.

[@theamerican7080]

It's the constant forced 1-2 power-shifts and the shock load on the clutches that burn them out when the car is stuck spinning just one wheel. The upshifts and downshifts create a tremendous amount of heat in a very short time, cooking the friction surfaces of the clutches and bands.

[@lampajoo]

I’ve done all these bad things in a Corolla from the same period with a very similar transmission literally hundreds of times and it’s still shifting fine. These transmissions can handle the abuse. Saying it failed because someone was stuck in the snow is a stretch.

[@pliedtka]

I like the description "slipping slightly" ;)

[@Henry_Jones]

Rocking it back and forth, D, R, D, R, trying to get unstuck, puts excessive wear on the clutches and bands. Putting it in D when youre not at a total stop is the same as riding the clutch on a stick shift.

[@speedkar99]

Exactly!

[@speedkar99]

Exactly!

[@doncapo732]

Love the videos as always.. especially when mixed in with your delivery and humor. Keep up the great work!

[@speedkar99]

Glad you enjoyed it!

[@ipaqrat9257]

Another great video (they're all great), and I see more recent videos, too, so congratulations on surviving the "Not going to need the small size anytime soon."

[@geoffedwards189]

"She's not going to need that small size any time soon". Oh you brave man! Lol 🤣😂🤣😂

[@speedkar99]

Haha

[@denniselenson560]

won't need that size 12 any time soon" absolutelly hilarious, I bet she finds gearboxes boring. I've learned so much watching your videos

[@speedkar99]

At my wedding I joked about how I'd teach her how a transmission works ...

[@ahotdj07]

I always love his videos. I learn so much and also love his one off comments!

[@PJBonoVox]

I'm guessing you mean 'off the cuff'.

[@speedkar99]

I'm glad you appreciate it, especially when I hear it from you guys all

[@jonnyduncan7056]

Great knowledge and information. Keep up the good work..

[@speedkar99]

Thanks

[@liver.flush.maestro]

Nice you explain things in detail, this is very nice 🙂

[@speedkar99]

Thanks

[@MrSupernova111]

Phenomenal video! Thanks!!

[@speedkar99]

Welcome

[@Enigmaafk]

I like the matrix’s removing of bolts with impact gun. Nice video 👍🏽

[@speedkar99]

Thanks, glad you like my editing style

[@MeataVore]

Wonderful video as always. I do not drive any more and cycle everywhere now. I have done this for a number of reasons. Main one is that I love cycling and other is I felt that all that mechanical and electrical technology that goes into cars these days is astounding. My back ground is mechanical and electrical and really do appreciate all that you show. My first car was and Austin Mini back in the mid 1980s. Look that one up and you will not find transmissions like that within. I feel most people do not appreciate all that thought that goes into one of those super transmissions when they press their foot on the throttle just to get their backside from point A to point B. How those solinoids energize sending fluid though its path way to a clutch piston. and all this done within the confined space of the transmission case. Also that the signal fluid is actually the lubricant too. Also what amazes me is that the solinoids do not short as everything is immersed in fluid. I decided I did not need all that technology and effort to get my back side from A to B. My two bikes do use similar gear system as that but without the clutches. I really love your videos and I am always comparing all that you show and explain with my Austin Mini. Where the engine sump and gearbox were all one.

[@donreinke5863]

You should know that oils, be they of natural origin or synthetic, do not conduct electricity at least when only 12 volts are used as the supply voltage. After 50 years in automotive repair I much prefer hydraulically controlled automatic transmissions to electronically controlled, hence NONE of my personal vehicles uses electronic control for transmission operation.

[@speedkar99]

Good choice on biking. Good for your health too

[@danhg3885]

Good and complete tear down. This unit did not fail from just getting stuck in the snow. This condition usually results in hard part failure / broken parts and not friction failure. Wheel spin tends to create enough rotational inertia to slam the geartrain and drums when changing ranges Reverse to Drive. It’s likely it was failing way before this one event. Nail in the coffin however. The units tend to make it to 200-250k and then VB and solenoids wear out / stick solenoids and cause complete friction failure. Like you see here. It’s a Toyota but they all fail. Each newer Toyota design becomes less reliable than the previous. The next iteration U660s are almost throw away units now.

[@speedkar99]

U660 is still better than the newer 8 speeds

[@cesartoledo5621]

That thrust bearing “was toast”!!! 🤦‍♂️

[@speedkar99]

Literally!

[@Dishmopo]

2:13 Oof! Someone's sleeping in the yard tonight!

[@speedkar99]

She doesn't watch, don't worry

[@mtwata]

Every winter there is a video of someone burning a transmission by getting stuck in snow hahaha

[@speedkar99]

And tons of them for sale on marketplace

[@alexs.818]

I use my car for a courier job. So far two and a half years later of constant stop and go driving and my automatic transmission still works just fine. However I drain and fill the fluid every 6 months to one year. Fluid is cheap, but transmissions aren’t.

[@speedkar99]

Exactly! Fluid is cheap

[@cocodog85]

stop and go rush hour traffic is also brutal on the transmission clutch pack. if you have a tranny temperature gauge you will see the temp sky rocket under those conditions. to keep the temp under control it is good idea to place the transmission in neutral while waiting for the light to turn green.

[@jacquesc3166]

This is what I do, and Ottawa traffic is probably nowhere near as bad as 100 degrees on the 405. Slow roll traffic kills cars, worse in hot weather.

[@speedkar99]

I don't see the benefit of sitting in neutral...that would just increase the amount of engagement and disengagement on the clutches !

[@cocodog85]

@@speedkar99 how does that damage the clutch pack or any other component in the transmission?

[@fragleshnagle4256]

I would have LOVED to see you take apart the transmission on the 92 mercury Sable I drove in demolition derby with no brakes so the only way I stopped the car was by slamming it into reverse. The planetary gears and ring gear had all their teeth ripped off as well as the needle bearings on the planetarys being basically flattened

[@speedkar99]

Wow! No brakes, so doesn't it stall when you hit reverse?

[@fragleshnagle4256]

@@speedkar99 it bogged down a little but it still went into reverse to stop the car. It nuked the transmission. But if you want a 7afe motor and trans to rip apart I got a 96 corolla you can have from the Illinois unfortunately

[@olspanner]

Good thing you're never short of special tools. lol

[@speedkar99]

I love my grinder

[@donvoll2580]

Good day from Waterloo. I thought I saw your looking for her sweater lol I am 73 ^ remember being many yrs ago, not to rock your truck, & 2 yrs ago I did, forgot all about this. Boy some of those pads were wore pretty bad. Thanks good video.

[@speedkar99]

Good day, you are welcome

[@MrSamPhoenix]

Great video dude, I hope you do more transmissions if you can get your hands on them. I’d love to see how Honda’s 10-speed works or why the ZF 8-speed is considered the best.

[@kamilb8232]

It seems like he mostly focuses on reliability and serviceability when he takes things apart. ZF 8-speed is considered the best not because of that, but because of its performance. It's able to do double duty of a comfortable and smooth daily driving, but also has near dual-clutch transmission like performance when driving on a track or back road. That's why it's considered the best.

[@On2wheels94]

id love to see the 8 speed zf. Will probably be a while before he gets his hand on Honda's new 10 speed

[@speedkar99]

I'd love to see the new ZF units as well. Gonna have to find a scrap one somewhere if it's cheap enough for a teardown investigation 🤣

[@michaelbezoski3096]

Nut busting, "borrowing" everyone's clothes but your own (that's right, I listen when preventing the unthinkable). Makes me wonder when family retribution will come? Love that injected humor Rodney Dangerfield style. Great tear down & diagnostic sleuthing of an abuser, Toyota style. Outstanding! Chef Safi is going to make me add another roll where rolls shouldn't be. Appreciate you both. Definite assets to KZbin!

[@speedkar99]

I'm glad you appreciate the video style 😉

[@ginog5037]

Epic video lots of laughs from wardrobe tips to traction tips (zip ties)...lol

[@speedkar99]

Glad you enjoyed that

[@chonglers1513]

Been waiting for this one for a while🙂

[@speedkar99]

Enjoy!

[@greathey1234]

Another informative video. I actually enjoy watching this more than watching Cameron Diaz

[@speedkar99]

Haha really

[@Iowa599]

Releasing is actually the reason the friction material on clutch plates is grooved, not "bite" or grip. They've got pressure to stick together, but once together they've got no force to pull apart. Until fluid can get back between the friction discs & steels they're stuck, and that causes heat & wear. There's always a little fluid in the grooves, so the discs release quicker.

[@danhg3885]

A good explanation. It’s like getting your boots stuck in mud when thinking of a wet clutch release. Smooth clutches tend to have improved torque capacity but release behavior is slower. Oil channels / grooving / waffle patterns all improve release characteristics of the friction disc by proving fluid paths and cooling. You tend to see static clutch locations use smooth frictions (applied continuously) and dynamic clutch locations (shifting) use waffle or grooved.

[@speedkar99]

Thanks for that explaination

[@andreroy55]

Your wife isn't going to need that small size sweater very soon? RIP, dude. :)

[@speedkar99]

Maybe someday

[@lampajoo]

Great video. I learned a lot, but just getting stuck in the snow once is not going to burn out the clutches. This thing was on it’s last legs when you got it.

[@speedkar99]

360,000 km of last legs lol

[@bdaneau]

I dunno but I love the ever present toothbrush and various clothing accessories that get sacrificed in these videos. And it looks like this is Canadian content - even better! :-)

[@victorradu9645]

I didn't expect to see all those clutches

[@speedkar99]

Imagine a ten speed

[@LawpickingLocksmith]

There is a reason you place a fan in front of a vehicle on stationary power tests. Stuck in snow also means compromised cooling, she was lucky the transmission did not catch fire!

[@speedkar99]

The high heat of the transmission can't be disipated by any small cooler

[@catsspat]

One of many reasons why you need to evaluate previous & current owners when buying a used car.

[@speedkar99]

Exactly.

[@cputeq007]

Great video. I now know I will never understand how transmissions work

[@louvendran7273]

I did a similar thing on the beach with a Landrover but it was moving all the way and I didn't exceed 3500 revs/min and I was selecting manually. So just a precautionary tale to any newbie off road drivers.

[@speedkar99]

Did you blow it up?

[@louvendran7273]

@@speedkar99 No it still ran. When taking off on a hill it used to slip a little intermittently. I got rid of it soon afterwards.

[@mackjsm7105]

This guy is crazy cool... wow

[@speedkar99]

Cool 😎

[@grob25]

I have always been told to never "rock" a vehicle with an automatic transmission.

[@speedkar99]

And this is why..

[@Fred-F4]

Great video! Do you is there any big difference between Honda wet clutches and these Toyota ones

[@speedkar99]

Clutch wise they're similar, the gear arrangement in Honda is more like a manual since they aren't using planetary gearsets.

[@harrisburghawk315]

great vid

[@talkingdot]

I too also take my brothers shirts to clean up oil glad to see I am actually not the only one

[@fernandohood5542]

What does a good clutch pack look like?

[@clover7359]

That's a shame because those 5 speed units were really good. The 4 speeds they were built off were definitely weaker, especially when paired to the 3.0L V6s like on the RX300.

[@speedkar99]

Exactly! The 5 speeds didn't have any issues

[@Hikari3.0]

What year of Camry and how many miles on this transmission

[@cihanmenemenlioglu6066]

Hi. When the BMW 320d or 320ied driving , (Zf8hp45) all of them that I drive makes a hard movement to the front, the car shifts down from 3 to 2 while I am slowing down, and if I pump up just on the shifting or just little bit after the shifting it makes a hard movement to the front, the engine speed highs up and then its shifts to 3 again. İts actually normal. But I think its disturbes the comfort of the drive. Did you explained this position at the end of your video while you explain the line pressure (you said “mash the gas”. Thanks.

[@donreinke5863]

The surface area on the frictions and steels isnt very much on this particular unit.. Combine that with hardened leaky seals (insufficient apply pressure) and you have clutch pack failure, something that wasnt often seen with older (and superior) heavy duty transmissions such as Ford C6, Chrysler 727 Torqueflite and to a lesser extent GM 400 Hydramatic. While the Toyota sourced automatic used in older Jeep Cherokees was also rock-solid, the front wheel drive ones are not under severe service conditions.

[@speedkar99]

Exactly. These are fragile components but very important in transferring torque

[@Nerad137]

Now I understand why front wheel drive automatic cars have that "traction control" feature which cuts power when you slip. It's not to increase your traction, it's to save the transmission from what most boneheads do when they loose traction. I also may have had an early 80s Camry hatchback which died this way...

[@speedkar99]

Yep except this Camry didn't have traction control

[@OkaMammedli]

Amazing video! Please if you can make Nissan 7 Speed Transmission (RE7R01A)

[@speedkar99]

Thanks

[@benkromphardt1916]

Remember folks, you could burn your transmission or just drive with a $15 mini-shovel in the trunk.

[@speedkar99]

Good reminder

[@Pinkielover]

The crazy thing is most cars today you can't even check the tranny fluid there's no dipstick... Which is ridiculous to me... since I don't have a tranny dipstick on my car I just go to the dealer and get a changed every five years, It's 200 bucks they flush out everything, and they replaced the filter.. Mazda 6... I do it myself but it's a huge pain in the neck mainly because you need to have a car up on the lift and you need to be able to see the full drain plug At a certain engine temperature and it needs to weep out of the hole.. I don't have a lift and it's a pain in the neck it's actually the only thing I'll never do on the car , Just cheaper to have a dealer do it.. I had to do the CV axle on the car and on this particular car You do the CV axle you lose some of your tranny fluid.. so I had it done at the dealer, After they replaced my manifold Cat converter for free.. Which in itself would've been an $1800 job they try to get out of it but I know the car has a federal warranty of 80,000 miles the car only has about 60 at the time still out of manufacture warranty but not federal warranty is up to 80.. The owner of this tranny must've really beat the crap out of it those things last forever pretty much if they're taken care of

[@speedkar99]

Agreed. I hate Changing the fluid since it's so messy to pump it in there...check the fluid level etc

[@Xabier2.0]

Pack the transmission cooler with snow and you can prevent overheating. That’s my hypothesis anyway. If I ever get stuck in the snow, I’ll try it and let you guys know how it works out👍.

[@lampajoo]

You don’t have to do that because the transmission cooler and radiator are integrated. That wasn’t the problem here.

[@Xabier2.0]

@@lampajoo Yeah well imma a shade tree certified mechanic so...

[@speedkar99]

The tiny transmission cooler isn't gonna dissipate that much heat so quickly

[@Xabier2.0]

@@speedkar99 Really do like your content 👍

[@Tar475]

So much just to make a car go in a specific direction, now i see why cars are pricey. Mankind is impressive but nothing lasts forever.

[@speedkar99]

It sure is complex

[@Henry_Jones]

Honda automatics used automated manuals until recently. No planetary gears till the 10 speed. I laugh when I hear 10 speed, reminds me of 10 speed bikes as a kid.

[@speedkar99]

10 speed bikes meant you were poor as a kid. 24 speed was where it was at. Good times!

[@dannyoaks85]

We have a saying for these in America. That's blowed up good

[@speedkar99]

Ok

[@chrisfreemesser5707]

...or put your floor mats under your drive tires to give you enough traction to get going. It's interesting to see just how automatics work (or in this case don't, lol) but man, manual transmissions are SO much simpler...

[@speedkar99]

Floor mats are a good idea !

[@Josh91810]

Could this one be rebuilt still?

[@speedkar99]

But why? There's so many used ones out there for cheaper

[@buckstarchaser2376]

... currently in the market for a pushbar, with winch and tow package for a corolla... Not because I have a corolla, but because it sounds cute. Until then, I'll have to stick with my 4WD, with bags of road salt, and a half-torn snatch strap, in the hopes that we may get more than 1 day of snow this year. The rain has been alright though, I guess. I mean, better us than them. More moisture for the aquifer horde. *sssip*

[@speedkar99]

I'd love to see that overlander Corolla

[@Esco4Lifeee]

How many more fucking components are in that thing 😮. Amazing!

[@IAM-re3xm]

Funny how he pulls things apart and goes pretty simple. Here we got some solenoid valves that open up some alien looking ports to apply pressure to the couple hundred rings I'm about to pull out.😂

[@speedkar99]

It's not that hard. Watch my transmission works video to understand everything

[@keremardicli4013]

I learned two new word: flat and squashed 😁

[@speedkar99]

And crusty

[@pulodogato3888]

Show 🇧🇷

[@speedkar99]

?

[@pulodogato3888]

@@speedkar99 parabéns pelo vídeo

[@Fireneedsair]

Mr speed car. Can you do a video explaning why you should NOT change tranny fluid if it has not been done consistently on an older car? I have a 2001 montero w 191000 miles (bought it at 113,000) and the tranny is running fine but I have been warned better to just keep the old fluid in as it is thicker and was told new fluid will make tranny slip. Will old fluid reduce the life of tranny? How about draining old fluid, swapping out filter and then putting old fluid back in? Any info much appreciated

[@speedkar99]

Just do a drain and fill. It'll slowly dilute the new fluid. Don't do a full flush

[@Fireneedsair]

@@speedkar99 wait..so drain old fluid, new filter and new fluid? No danger of tranny slipping with new fluid? Also, if my tranny is working fine, should I even worry about it? Love your videos btw!

[@Fireneedsair]

@@speedkar99 or just mix some new with old?

[@wallyballou7417]

Is it me or does it seem like every car depends on tiny fragile parts buried deep inside the engine or transmission? Kind of amazing they don't break more often.

[@speedkar99]

They are frigile if mis used Many of these transmissions (including this one at 360K) make it to higher mileage

[@KLNYC]

does dual clutch last longer than TQ converter type? thanks for the very informative video

[@ricardokrab7357]

No by a long mile

[@TheMarcQ]

A decent sized traffic jam can kill a double clutch

[@maweitao]

No. Dual clutches don't actually have two sets acting on the same gears. One set engages with odd numbered gears and the other with even. They're one of the less reliable types of transmissions because they're complex and have more parts subject to wear.

[@On2wheels94]

I think if they are serviced regularly it's possible. But the dry clutches will always need to be replaced long before the wet clutches in a standard trans

[@danhg3885]

Depends on the model design. The wet dual clutch systems have longer service life than the dry clutch systems. Ford’s DCT Dry clutch has been a nightmare for Ford and car owners.

[@JasonLuther1]

Which year and engine is this unit paired with?

[@speedkar99]

Read description

[@JasonLuther1]

@@speedkar99 durr. heh thanks. Love your work man

[@patriotcanuck6485]

Can limited slip diff. be added to a front wheel drive vehicle?

[@gummostump4217]

Yes. They are available from factory in Hondas/Acuras, Golfs, and probably many more performance oriented FWD cars.

[@speedkar99]

Technically yes.

[@test40323]

Huh, the long awaited postmortem examination. Question: how are all the electronics inside the transmission not get shorted out by the fluids?

[@speedkar99]

ATF isn't conductive like water is.

[@daveb495]

@@speedkar99 Huh. TIL don't put water in your tranny.

[@johndandrea8034]

I still think automatics transmissions are the 9th wonder of the world.

[@speedkar99]

Yes

[@brynyard]

Do the inner planetary runner gears (last one you pulled out at 7:44) in the U151 have the same weakness as the U140, where the bearing pin would unscrew itself/wear out? Hard to see in the video, but it seems to have a sturdier design. Here's a U140 with a failed inner planetary: kzbin.info/www/bejne/f3TRpGqMjJp1jdk

[@danhg3885]

Rear planetary pins don’t loosen up as frequently on the u150 models. Seems like all the u140 / u240 are the models suffer from the pins loosening from the carrier. I think Toyota / AW improved the carrier material and process when they crimp the pins. The Aftermarket will sometimes weld the pins to prevent pin movement.

[@squishy312]

@@danhg3885 I had mine welded on the u140 when I rebuilt it. Working great now. The U140 has 3 pins. This is the next model after with 4 pins, and an extra gear.

[@speedkar99]

Good to know

[@Clintondmb]

2:10 wait a minute 😂

[@speedkar99]

Shh

[@adityadeshwal8623]

sir please make me understand 7g tronic of Mercedes benz please sir...

[@speedkar99]

Sure

[@Henry_Jones]

The Ford model T used a planetary gearset. Ford hated sliding gears.

[@speedkar99]

Did it? I would have that it was manual

[@Henry_Jones]

@@speedkar99 it was a manual but it used a planetary gearset. 2 forward gears and reverse. Simple

[@thetruth7633]

It is a simple design but that did not safe it from misuse

[@speedkar99]

Exactly

[@squishy312]

After rebuilding a U140, I know what every part is in this transmission. Those are so burnt! My transmission died because the pins failed on the first gear planetary and grenaded. Luckily, I was able to get the replacement parts needed, and everything works great now. the U140 only has 3 pins and are the known failure point for it. The U151 has one more clutch pack, hence the 5 for one more gear. This is basically the newer version of the U140, but fixing all the problems it had. It's not that bad of a transmission. You just have to take care of it. Wow were those clutches smoked. Mine, at 185k miles, had great clutches in it. I replaced them anyway, but could have reused them.

[@speedkar99]

Awesome work and yes the 5 speed is better than the u140. Hope it lasts for you

[@GetTheFOutOfMyWay]

Lol maybe I should send you all my old clothes, just threw a whole bunch of holey socks. At least they'd live on for a tiny bit longer in your hands.

[@speedkar99]

Socks are very absorbent

[@evanleo7633]

🧐I’m no expert in any transmission but isn’t the torque converter suppose to take all the slippage not the clutch? Thus under heavy load like stuck in snow and towing the transmission won’t destroy itself?

[@76horsepower]

At high engine revolutions, the torque converter would be well past its stall speed.

[@speedkar99]

No, the clutches do most of the slippage. Otherwise you'd have a loss of power when changing gears like a manual

[@evanleo7633]

@@speedkar99 thanks for the reply!now I know

[@evanleo7633]

@@76horsepower make sense

[@gbazil]

I don't get how iterating reverse and forward motions damage trans. You shift to forward, disks (steels and frictions) are engaged (compressed), they rotate as one unit (because wheels are spinning very easily on snow so they don't cause disks to slip), no friction there thus no heat source. Same with reverse. How does it kill trans ?!

[@speedkar99]

The constant engagement and disengagement (often without stopping completely) builds up heat

[@gbazil]

@@speedkar99 you mean before the disks are engaged they are slipping little bit, thus creating some heat. The same might happen on disengagement.

[@bv2010]

I can smell this video

[@speedkar99]

It was nasty

[@johnford8369]

Is this the same video from last year?

[@speedkar99]

No. I never tore down a blown transmission last year ...that was a few years ago on the g35

[@willloman812]

For this, you’ll need 30-40% of your wife’s wardrobe

[@kclefthanded427]

I think the Toyota Camry deserves a limited slip differential on the 3.5L V-6 to combat torque steer

[@NoorquackerInd]

This is true

[@speedkar99]

Agreed. But soon there won't be a 3.5L

[@orac229]

Man that is so complex, how do they even design that stuff. What ever happened to the KISS principle?

[@speedkar99]

KISS doesn't work when you have bean counters and environmentalists breathing down your back. If it wasn't for them, we'd still be driving 3 speed manual transmissions

[@davelowe1977]

I don't understand the failure here. The wheels were spinning in the snow with zero effective torque. How did this cause the wet clutches to slip/burn up on a transmission with a torque converter?

[@speedkar99]

The engagement and disengagement, lack of cooling

[@atticstattic]

"I'm just going to use my brother's inhaler to blow the dust off of these parts."

[@speedkar99]

🧀

[@zhusulai]

So the next video is going to be installing a winch on a Corolla? 😂

[@speedkar99]

That's a good idea. Send me the winch!

[@australiantruckspotting8883]

Milwaukee 👍

[@hamentaschen]

Dude!

[@speedkar99]

Sup

[@legatus9081]

Well with the correctly designed automatic transmission there wouldn't have been a problem. The only problem is that it was a normal Camry

[@speedkar99]

With an abnormal driver

[@colchronic]

Oh this is the transmission from the XV30 that you replace the transmission on yeah I'm kind of curious what happened here

[@speedkar99]

Yes. It's been sitting in my yard for a year haha

[@colchronic]

@@speedkar99 I was kind of expecting a roller bearing to be destroyed with that cylindrical piece of metal that you found in the pan

[@EnvoyExpress]

2:10 HAHAHAHAHAHAHAHAHAHA!

[@speedkar99]

🤣😃

[@lampajoo]

You’re wrong about the transmission fluid not getting cooled when the car is stuck. The radiator fan should have come on once the engine was up to normal operating temperature and that would have cooled the trans fluid, too.

[@speedkar99]

That's if the radiator fan is tied to transmission temperature and not engine temperature. Also the back and forth motion causes the fluid to rapidly heat up within the transmission... A tiny cooler like that isn't cooling off that much heat!