4L60E Rebuild: Teardown (Disassembly)

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4L60E Rebuild: Teardown (Disassembly)

Рет қаралды 37,025

Күн бұрын

The teardown of the 4L60E can be pain in the neck, and can easily result in damaged parts. In this video, I share my disassembly procedure; The tools, tips, and tricks for taking apart the 4L60E automatic transmission. This video is part of a series on how to rebuild the 4L60E. We will be adding a lot more videos dedicated to the 4L60E. We're going deep, instead of wide. Stay tuned!
Help this Channel Grow: • Help This KZfaq Chan...
How to Make Your Own Snap Ring Removal Tool: • Making your own tools-...
**More 4L60E Videos**
Pump: • 4L60E Pump: How Does I...
PR Valve (Part 1): • 4L60E Pressure Regulat...
PR Valve (Part 2): • 4L60E Pressure Regulat...
PR Valve (Part 3): • 4L60E: PR Valve (Part ...
AFL Valve (Part 1): • 4L60E: AFL Valve (Part...
1-2 Shift Valve + Solenoid (Part 1): • 4L60E: 1-2 Shift Valve...
1-2 + 2-3 Shift Solenoid (Part 1): • 4L60E Shift Solenoid -...
Planetary Gearset: • Planetary Gearset - Ho...
Power Flow (OD Gears): • 4L60E Power Flow (1st,...
Power Flow: (Manual Gears): • 4L60E Power Flow - Man...
Teardown: • 4L60E Rebuild: Teardow...
Teardown Time-Lapse: • 4L60E Teardown (TimeLa...
Output Shaft Swap (2WD to 4WD Conversion): • 4L60E Output Shaft Swa...
RESOURCES:
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Electrical Harness Case Connector Tool: amzn.to/3uJeqXZ
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Lip Seal Installer (Huge Time/Headache Saver): amzn.to/2MxUC8O
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Universal Clutch Spring Compressor (Use in trans & drums): amzn.to/2YHQGn6
Adjustable Clutch Spring Compressor (Use with shop press): amzn.to/2W2DAQs
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Snap Ring Pliers (Clutch Spring Compressor Snap Ring): amzn.to/2GwwixP
Snap Ring Plier Set (Pump Circlip Snap Rings): amzn.to/2IUxpdu
2) 4L60E Parts: (Paid Links)
Bell Housing Bolts (Torx): ebay.us/vZLBiN
Pan Gasket (Fiber): amzn.to/2N4Ykba
Filter: Shallow Pan: amzn.to/3t7AtH7 Deep Pan: amzn.to/30sVoYL
Output Shafts:
Heavy-Duty: 2WD: amzn.to/3dxjw4q. 4WD: amzn.to/2NRN9m0
Standard-Duty: 2WD: amzn.to/3pKoptk 4WD: ebay.us/cDwiJt
Rebuild Kit: 93-03: amzn.to/3chb3Qw 04-Up: amzn.to/2OaYJcL
Molded Pistons: amzn.to/3chRbNb
2-4 Band: Stock: amzn.to/3rvW2ke Hi-Perf: amzn.to/2N3JRw2
Sun Shell: Upgrade: amzn.to/3cbPmRK Heavy-Duty: amzn.to/3rzAEuv
3) Safety-Wear: 😷 (Paid Links)
A) Comfortable Safety Glasses: amzn.to/2JguhZN
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Bench Vice (Craftsman): amzn.to/2LFnKbZ
5) Shop Supplies: ✏️ (Paid Links)
Assemblee Goo (Blue) (LubeGard): amzn.to/2WrN7nT
Assemblee Goo (Green) (Lubegard): amzn.to/2LIiWov
Thread Locker: Medium: amzn.to/2YLtmFk Heavy:
Brake Parts Cleaner: amzn.to/2HxQ1Pz
DISCLOSURE: 🕵
Links provided are affiliated links with the associated websites. While there is no extra cost to the purchaser, a small portion of the sale goes to support this KZfaq channel.

Пікірлер: 123

@SouthpawAutoworks 3 жыл бұрын

Thank you for being here! If it feels right to you, help me spread the word about this channel… 1 Handed Transmission Rebuilder (60 sec): kzfaq.info/get/bejne/kLd4p9WHq7uslJ8.html

@davidp.eutsler2583 11 ай бұрын

What if you do not have any play in the input shaft?

@davidp.eutsler2583 11 ай бұрын

Thank you, excellent instruction!

@Liv123yess 8 ай бұрын

The first person to make a transmission work was a damn genius

@SouthpawAutoworks 8 ай бұрын

Modern marvel

@tedpreston4155 Жыл бұрын

I've watched several 4L60E disasssembly videos, and yours is by far the best. You and your cameraman deserve kudos for filming things in a way that shows good detail of what you're doing. Starting with clean parts and moving slowly through the process makes a lot of difference to those of us who don't do this every day. Besides being a good mechanic, you're also a good teacher! I think I have the courage to delve into my tranny now! I have little doubt that I'll find a broken sun shell. (no reverse, no second or fourth gear.) Kudos also to your parents and whomever else helped you in your youth to overcome your deformity. I wish my aunt and uncle had done the same. After too much coddling, my cousin doesn't use his "stump" nearly as effortlessly as you appear to do. Thalidomide be damned!

@SouthpawAutoworks Жыл бұрын

Sounds like you're on the right track (sun shell). Thanks for dropping me a line!

@Noblemoney73421 3 ай бұрын

I've been wanting to learn how to do this so bad and this makes it so much easier then reading a book with no pictures 😂

@jaronvaughn4520 Жыл бұрын

I have never seen someone work as smart as you do. Your attention to detail is second to none. My 4l60e lost 3rd gear and you have inspired me to take it on myself… Great video as always, thank you!

@SouthpawAutoworks Жыл бұрын

That's very kind of you to say. Taking it on yourself...right on!

@rufelestrada9791 10 ай бұрын

This has got to be the BEST KZfaq Vid I've ever seen!!! You set the bar, Brother, no matter the subject matter, this is how it should be done, and your demeanor is what others should emmulate. You should be a Platinum KZfaqr!!!! Thanks for all that you do!

@SouthpawAutoworks 9 ай бұрын

Wow, thanks! Appreciate the sub and the support.

@frankensteinrules6511 3 жыл бұрын

AWESOME video. I have looked all over youtube for a tear down of a 1993 like mine. This is the first. Tank you very much.

@SouthpawAutoworks 3 жыл бұрын

Right on! Glad you enjoyed it. Thanks for dropping me a line! Have a great weekend.

@user-du7pl4go1m 7 ай бұрын

I am so glad I found your channel. It inspired me to tear down my transmission and repair and upgrade myself. Saving me thousands of dollars.

@SouthpawAutoworks 7 ай бұрын

Right on! That's awesome! Appreciate you taking the time to drop me a line. Happy building.

@DavidJones-jj1ju 4 ай бұрын

Really appreciate your wisdom, I'm slowly learning 😊 Thanky bunches

@SouthpawAutoworks 4 ай бұрын

Right on. You bet!

@jft3426 Жыл бұрын

The endplay measurement information was great information alone. I have watched many videos on the 4l60. Yours are outstanding.👍

@SouthpawAutoworks Жыл бұрын

Glad you're getting something of value out of the videos. Thanks for dropping me a line.

@darylvoorhees2629 7 ай бұрын

My 4L65e has a pressed on Rear Ring Gear onto the 4Wheel Drive Tail Shaft. I successfully pressed it off, but now trying to get the 2 Wheel Drive Tail Shaft pressed into the Rear Ring Gear is a real problem. Because the tail shaft has the speedometer gear, it is larger than than the opening of the case. So I guess I have to make a jig to hold the case and ring gear while I press in the tail shaft. What a pain! Thanks for your informative videos.

@SouthpawAutoworks 7 ай бұрын

If the ring gear has the dimples, then getting the shaft back through the ring gear will require a little persuasion. If it were me... (disclaimer: do what I do at your own risk) I'd stack in the rear guts, all the way up to the Center Support (install rear ring gear, rear planet, etc, etc, and ultimately install center support). Install the large yellow snap ring, that retains the Center Support inside of the trans case. Now, the Center Support provides a surface to work against. Gently install the output shaft, lining up the splines. When I encounter the press-fit, I use the bottom of my hammer handle (rubber coated), and strike the rear of the output shaft. Shouldn't take much effort to install it. Hope this helps.

@darylvoorhees2629 7 ай бұрын

@@SouthpawAutoworks thanks very much for your advice. I appreciate your comments and enjoy your videos. You explain things in detail when many guys just breeze over the important things. I'll try reassembly using your advice.Thanks

@250gtskyline5 Жыл бұрын

I just noticed the guy only had 1 hand! It’s encouraging because if you have two hands you don’t fix your transmission, you should lean from this guy.

@SouthpawAutoworks Жыл бұрын

I'm on a mission to get more people involved with automatic transmissions. People are intimidated by these things...and I want to change that. If it's possible for a Southpaw, then it's possible for anyone. If you're interested in helping me spread the word... 1 Handed Automatic Transmission Builder: (60-Second Preview) kzfaq.info/get/bejne/r5mGnNuSxKvHYXk.html Thanks for dropping me a line, 250GT Skyline.

@Keithjo74 7 ай бұрын

Very well organized, easy to follow, and clearly explained. Great job.!

@SouthpawAutoworks 7 ай бұрын

Glad you enjoyed it!

@chukchee 2 жыл бұрын

Excellent video.

@SouthpawAutoworks 2 жыл бұрын

Thanks for dropping me a line!

@BigFun4Life 3 жыл бұрын

Great video man,thanks for sharing your knowledge...

@SouthpawAutoworks 3 жыл бұрын

Thanks for watching, and for dropping me a line!

@shannonvallance892 Жыл бұрын

Great tool your video!!!! Thanks free tools of the upmost detailed right on video!!!!!

@SouthpawAutoworks Жыл бұрын

Glad it was helpful!

@eduardocastro3755 2 жыл бұрын

Thank you

@SouthpawAutoworks 2 жыл бұрын

You're welcome. Thanks for dropping me a line!

@rasmushaag7340 7 ай бұрын

You helped me through the entire process. Thank you!

@SouthpawAutoworks 7 ай бұрын

Right on!

@automaticosdovale-cambioautoma Жыл бұрын

Thanks for sharing.

@SouthpawAutoworks Жыл бұрын

You bet.

@user-mm6xy9bq8h 9 ай бұрын

Very interesting videos, and certainly make you appreciate the complexity of an automatic transmission. Would like to see some videos on diagnosing transmission problems.

@SouthpawAutoworks 9 ай бұрын

It's crazy that people conjured up these modern marvels. Diagnosis videos are definitely a part of the game plan.

@user-mm6xy9bq8h 9 ай бұрын

I was very impressed by your videos, very thorough, and the rate at which you worked certainly made me think you know transmissions backward and forward. I, personally would love to see you do a transmission diagnostic video. For those of us who don't, at this point, plan to rebuild a transmission we sure would appreciate information as to how they go wrong and what the symptoms represent. Thanks for the great stuff. JackN @@SouthpawAutoworks

@cockasorrus7475 3 жыл бұрын

Great instructional video brudda!! Thank you! You are an inspiration and amazing!

@SouthpawAutoworks 3 жыл бұрын

Thanks for dropping me a line! I checked out your channel. Is that you doing wheelies on the motorcycle?

@cockasorrus7475 3 жыл бұрын

@@SouthpawAutoworks that’s a friend of mines son. I call him Evil. He just opened up a motorcycle shop in Cali. CaRaZy bastard!!

@SouthpawAutoworks 3 жыл бұрын

Right on.

@cockasorrus7475 3 жыл бұрын

@@SouthpawAutoworks Hey buddy I just wanted to mention about those plastic locks on the elec. conn.'s. They really should come up with a better idea since it seems to be not only do they break when removed which requires replacing the ends if you own the removal tool to get the ends off. They also could break off and take a swim through the trans.!!! Man those clips are a great example of good intentions gone wrong! I always had a problem with the ones on the HEI wires!! I was in the desert and the truck just died! Doggone hot wire to HEI coil fell off because the lock portion was broken! I love your energy and you make a superb instructor with a lot of extra good tips and info!! Thank you for checking out my channel again brudda!!!

@cockasorrus7475 3 жыл бұрын

Awesome rest of the video! It looks like this model is close to a TH350? I noticed you didn't show blowing the low/rev. drum out? Is it the same as a TH350? I also like your homemade tools! I have a similar center sup. snap ring tool, I cut a little notch in the end though to twist a little then pull. I enjoy watching and will be watching more!! Thank you! PS: I just finally got the time to finish watching this so I made multiple replies or I would have written a book with chapters! lol

@judelingam6100 2 жыл бұрын

Great sir thanks

@SouthpawAutoworks 2 жыл бұрын

Right on. Thanks for dropping me a line!

@rustynutzclassicrestorations 9 ай бұрын

Very good video! ... Thanks for sharing...

@SouthpawAutoworks 9 ай бұрын

Your positive feedback is appreciated. Thanks for dropping me a line.

@m.r1164 9 ай бұрын

U are a good teacher man....

@SouthpawAutoworks 9 ай бұрын

The positive feedback is appreciated.

@m.r1164 9 ай бұрын

@@SouthpawAutoworks man I need you to be my teacher.....

@dan-dan-da-treeman Жыл бұрын

Excellent work folks. Thanks for the much needed info! 💪🔥

@SouthpawAutoworks 7 ай бұрын

Appreciate your comment.

@fl9267 Жыл бұрын

Great video, and thank you for sharing your knowledge.

@SouthpawAutoworks Жыл бұрын

Glad you enjoyed it! Appreciate you dropping me a line.

@josefranjul9418 11 ай бұрын

Excellent Work

@SouthpawAutoworks 9 ай бұрын

Many thanks.

@zerogearedfilms397 Жыл бұрын

Love your videos! Learning a ton! Keep up the amazing work!

@SouthpawAutoworks Жыл бұрын

Awesome, thank you!

@cpthillbilly 2 ай бұрын

12:27 mark one more clip down to the Abyss.

@jodavaro1670 Жыл бұрын

Saludos desde Puerto Rico 🙋🏻‍♂️💯

@SouthpawAutoworks Жыл бұрын

Thanks for dropping me a line.

@diyguy446 8 ай бұрын

Dude.... so good....do you have a "sequel" on rebuilding a 4L60E... mine is 2004

@SouthpawAutoworks 8 ай бұрын

The positive feedback is appreciated. No sequel, at this point in time. But, it's just a matter of time before a build series is put together. Currently working on other 4L60E videos. Thanks for dropping me a line.

@JorgeGarcia-ls1qy Жыл бұрын

Hey i liked this video you are good working on transmisions with one hand keep up the good work i would love for for you to repair my geo metro 1993 automatice transmision good vidoes

@SouthpawAutoworks Жыл бұрын

Glad you enjoyed it. Thanks for dropping me a line!

@JackiePate-p1u Ай бұрын

I just removed a 4l60e from my brother's 4wd 2001 Chevy Silverado. Have been unable to locate a reman. They ask for code I found 3kcd, they said that's not it. Then I found gmpt 4l60e, still nothing. I'm thinking of attempting a rebuild.

@Datgp 7 ай бұрын

I lost gear 3&4 in my 07Avalanch, so I had transmission rebuilt. Truck drove fine for 2 months then lost 4th again and then it wouldn't come out of 1st. Transmission shop say they can find anything wrong with the transmission. had engine check and its good..... What could it be?

@hussainarshad5724 11 ай бұрын

Love u dear

@kennyjackson7129 6 ай бұрын

Hello, I bought a rebuild kit for my 96 4l60e, where do i place the ball bearings that go under the valvebody /

@obinhojuve247 Жыл бұрын

Nice 👍 work. Do you have any rebuild Transmission for 2007 Yukon SLE RWD.

@SouthpawAutoworks Жыл бұрын

Yukon transmission for sale? No. Southpaw Autoworks is all about teaching people how to fix/rebuild/upgrade their own transmission. 1 Handed Automatic Transmission Builder: (60-Second Preview) kzfaq.info/get/bejne/r5mGnNuSxKvHYXk.html Thanks for dropping me a line, OBINHO JUVE.

@Theoneandonlyadamsmithshow 4 ай бұрын

Who do you purchase your rebuild kits from?

@ChrisNett42 Жыл бұрын

What is your recommended clearance for the 3-4 clutch pack?

@csbuckn Жыл бұрын

I see you didnt remove the last part(reverse piston?). Is this because they are not removed typically or is it because of the tooling needed or another reason?

@SouthpawAutoworks Жыл бұрын

It's simply due to habit... When I was wrenching for a transmission shop, I would only tear the unit down far enough to look at all of the usual suspects. After the inspection was complete, a parts list was put together. The service-writer would use my parts list to put together an estimate for the customer. The customer would either give us the green light...or look into other options. So, during a teardown, there was no need to remove the Low-Reverse piston....not until I knew that we were moving forward with the rebuild/repair. Removing the piston before then, could potentially result in time wasted...and time is money. To answer your question... For a rebuild, the Low-Reverse piston must be removed. It has three (3) seals on it, that must be replaced. Plus, the piston must be removed in order to clean the piston, and clean the transmission case. For the sake of these videos, I really need to be showing the piston removal, during teardown. Thank you for pointing this out. Much appreciated.

@michaelbaskinmichael9862 7 ай бұрын

Is it possible to just put in rental lt input drum and new band get out without disturbing to much

@michaelbaskinmichael9862 7 ай бұрын

Input drum

@SouthpawAutoworks 7 ай бұрын

I believe that you're asking...is it possible to replace a worn out band, and an Input Drum that has worn out clutches, with a new band and a new Input Drum (that already has new clutches installed)? It is possible to do this, and not have to remove everything else from inside the trans. This can even be done without removing the VB (valve-body). However.......... If your trans has a band and some clutches that are smoked, there's a reason that they're smoked. If we simply replace old clutches with new ones, I imagine that it will get the trans/vehicle back on the road. But, it probably won't be long before the new clutches are smoked again (this applies to the band, too). If we want to do the job once, and be done with it, then it's important to identify why the clutches failed in the first place (root cause of failure). Could be caused by a number of things inside the trans, and even outside the trans. A video topic for another time.

@theguardians462 Жыл бұрын

could you make a rebuild video for this style of the 4l60e

@SouthpawAutoworks Жыл бұрын

I plan on doing that, as time permits.

@raymonddevore1934 2 жыл бұрын

My brother bought a trans off a guy for his 94 chevy k1500 4wd..guy said he had rebuilt it. It's the 4L60e Trans. The trans will go in all gears and move in every gear. The problem is in overdrive,3, or 2 it stays in one gear and doesn't shift. If you put trans in low gear it will shift while driving and as soon as you let off the throttle it will down shift really fast....if your going fast enough it will slide the rear tires. Any idea what may be the issue?

@SouthpawAutoworks 2 жыл бұрын

It sounds like the transmission is in "Limp Mode." If the PCM (computer) detects a transmission problem, it can put the trans into Limp Mode....so the vehicle can be "limped" to a repair shop. When in Limp Mode, the PCM cuts off electrical power to the trans. When the trans has no electricity supplied to it, the trans will default to 3rd gear, with the shifter in OD mode. There's more to it, but I'll spare you the details. Do you have a check engine light? Have you pulled codes?

@AbdulAlim-ie8db 11 ай бұрын

Please pro box car gearbox dis assembly and assembly

@SouthpawAutoworks 9 ай бұрын

Do you mean a 4L60E built for racing? Or do you mean something else?

@gabrielfranjul7171 11 ай бұрын

Cant find the other video going thru the parts, im rebuilding a 93 for the first time

@SouthpawAutoworks 9 ай бұрын

I have not made the other videos, yet. 1st 4L60E? Right on! That's exciting!

@gabrielfranjul7171 9 ай бұрын

Just now got the time and parts to reassemble it, wish me luck One question, the TCC Solenoid used a small check ball? I think one came out of the snout of the tcc@@SouthpawAutoworks

@SouthpawAutoworks 9 ай бұрын

If we're talking about a 0.250" check-ball...... That's something that some builders would do on a 700-R4. It's not necessary on the 4L60E. If you don't already know, the 4L60E is the successor to the 700-R4 (also known as the 4L60...no E). The early 4L60E (93-94) uses a nearly identical pump to the 700-R4. The 700-R4 is controlled by a cable (connected to the carburetor) and a governor (driven by wheel speed). This trans lived in the days before computer controls. Even though there was no computer, the trans, however, did still need electricity....in order to operate the TCC solenoid. Under the right conditions, a pressure switch, located on the VB (valve-body), would create a path to ground, for the TCC Solenoid circuit...which would turn on the solenoid...which causes oil to flow in a different direction inside the converter...which causes the TCC to engage. If someone didn't want to run a power wire to the trans, but still wanted the TCC to work, this is where the check-ball located in the snout comes into the picture. It's not perfect (it has a drawback), but it is a solution. If we're talking about a check-ball that's much smaller than 0.250".... It could've been the check-ball located inside of the TCC Solenoid. It's not supposed to come out. If you're interested in learning about how the 4L60E On/Off solenoids work... 4L60E Shift Solenoid - Part 1 (Basic Operation) kzfaq.info/get/bejne/fMdzm7qeyNmll30.html Note: Both shift solenoids, and the TCC Solenoid, are On/Off solenoids. PWM solenoids are a different animal.

@gabrielfranjul7171 9 ай бұрын

Mine its a 94 On/Off the year pre PWM Yea its a smaller check ball like 3/16 I didnt exactly know where it came but asking some people told me that the only place it couldve come off was the TCC, so this means I need a new TCC Solenoid@@SouthpawAutoworks

@SouthpawAutoworks 9 ай бұрын

Glad you got to the bottom of it. Wishing you the best on your build.

@craigj.651 2 жыл бұрын

My new input shaft o-ring has a slight surface tear, should I get a new one or reuse the original that has no tear an looks good an not hard?

@SouthpawAutoworks 2 жыл бұрын

That is a bummer about the new one. But, good eye!! When little details, like this one, get overlooked, headaches occur. You did good... Ideally, get a new replacement O-ring. If there ends up being a problem with the used O-ring, down the road, it will cause torque converter issues. And replacing an old O-ring, at a later date, will require trans removal. However, if getting a new O-ring is not an option (due to a time constraint), if it were me, I would have to reuse the old one (Pliable with no cuts/tears) over installing a damaged one. There are two(2) different O-ring sizes, depending on which input shaft your 4L60E is equipped with: 298mm converter/shaft VS 300mm converter/shaft. 298mm Shaft: 93-97 300mm Shaft: 98-14 Short Video about your question and 298mm VS 300mm: kzfaq.info/get/bejne/aJ5niLmU3KrLeKM.html 4L60E Input Shaft O-Rings: ***Paid Links*** 298mm: amzn.to/3CmjHsP 300mm: amzn.to/2ZrGFA0 Ebay: ebay.us/h7lpLB DISCLOSURE: 🕵 As an Amazon Associate I earn from qualifying purchases. Some, if not all, of the links contained in this video description are affiliate links. This means that, at no additional cost to you, I will receive a small commission on any purchases you make through the website links provided above.

@craigj.651 2 жыл бұрын

@@SouthpawAutoworks @Southpaw Autoworks thanks man, you are top three transmission guys I've found regarding knowledge an inner workings. After watching 5 of your vids, I never knew you had an arm missing until this video, warrior!

@SouthpawAutoworks 2 жыл бұрын

Right on! Thanks for watching. Dude, that's too funny.

@craigj.651 2 жыл бұрын

@@SouthpawAutoworks I went to a shop an got a new one, I called on the phone and he said it would be $5 which was fine with me since everywhere else was about the same, when I got there he gave it to me for free. An this time when I put it on I lubricated I very well, Last time I think I damage it by not keeping the converter level an not going slow pushing it in.

@SouthpawAutoworks 2 жыл бұрын

Dude, that's awesome! Really glad to hear that. Right on.

@carlosgonzales1419 Жыл бұрын

Will a 97 s10 blazer tranny work on a 95 suburban? Both 4x4

@SouthpawAutoworks Жыл бұрын

Unfortunately, the '95 4L60E is a standalone year. In other words, it doesn't interchange with any other years of 4L60E. The wiring harness, among other things, are different than earlier/later versions. On a positive note, parts can be swapped, in order to make another year 4L60E work in a '95 application. There are different sized bell housings (and bell housings designs), depending on year/engine size/etc. Also different torque converters, pumps, etc. I'd like to put together a video on each of these subjects, when time permits.

@McChevy 2 жыл бұрын

Hi, thank you for the informative video... I am busy building my '93 4L60e... Actually, the casting date say 92... Will you post a video where you assemble the Box? If not, When I striped my 3-4 Stack, I found that there were no Load Release Springs in the 4th Gear assembly... Is that okay? My Workshop manual says it has to be there (in all goxes since 1988) I would appreceate if you could help. I am in Germany and it look like the people here have no idea...

@SouthpawAutoworks 2 жыл бұрын

We plan on doing a complete rebuild series on the 4L60E. However, we're currently busy working on a TH400 video series. TH400 Rebuild Series - Coming Soon kzfaq.info/get/bejne/p5aVlsyJup69dX0.html To answer your question... I always install them (stock build). I know some builders will throw them out during the rebuild. However, I was trained to use those springs. It's my understanding that those springs are used to help keep the 3-4 Clutch off, when the trans is in 1st and 2nd gear. When the engine revs high enough in 1st or 2nd gear, the Input Drum will also spin fast. The residual oil located in the drum (right near the 3-4 Clutch piston) will grow "taller" (due to centrifugal force) and start to push on the 3-4 Clutch piston. The theory is, the 3-4 Clutch will not fully apply...however, it'll drag a little. This dragging builds heat and burns up the clutch pack, over time. Like I said, some people throw them in the trash...I happen to use them. To each their own.

@McChevy 2 жыл бұрын

@@SouthpawAutoworks Hi, thank you very much for the answer, I will order these springs 🙂👍

@McChevy 2 жыл бұрын

@@SouthpawAutoworks I have found the major problem on my Box... the Sprag assembly is completely stuffed...

@SouthpawAutoworks 2 жыл бұрын

Glad you found the problem. Did your trans not have forward movement, with the shifter in D? These videos (listed below) are not specifically about the Input Sprag. However, you can learn more about what they do...as they are mentioned in both videos. 4L60E Power Flow (1st, 2nd, 3rd, & 4th Gear): kzfaq.info/get/bejne/f8x_pMWF1rHZknk.html 4L60E Power Flow - Manual 1st, Manual 2nd, & Manual 3rd: kzfaq.info/get/bejne/bNGWdNiJr6y9dnk.html

@McChevy 2 жыл бұрын

@@SouthpawAutoworks Thats the weird thing, it would run fine, but as soon as I would go uphill and she would gear back from 4th to 3rd, but then it'll be like neutral and the engine revs up. I thought it would be the 3-4 piston or clutches, but these still look okay, but I'm changing them in any case.