AUSV 2520 - Clutches, Bands, and One Way Devices
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- čas přidán 24. 06. 2024
- This video is intended for students in the online AUSV 2520 Automatic Transmissions class at Weber State University in Ogden, Utah. This class is normally taught face-to-face, but due to the COVID-19 Pandemic, I am attempting to offer the class material online. Suggested quiz questions are shown below the video timeline. You should have watched the following Planetary Gear Set video first • Planetary Gear Set Ope...
This video covers basic operation and function of clutches, bands, and one-way devices in automatic transmissions.
Timeline:
Review of planetary gear set operation at 0:03
Bands on an old Chrysler transmission at 1:53
Clutch packs at 5:16
Valve Bodies and Solenoids at 6:03
Clutch pack details at 7:36
Clutch Backing plate at 8:53
Clutch fiber disc at 9:28
Clutch steel plate at 10:02
Clutch Apply plate at 10:40
Clutch pack compared to a sandwich at 10:55
Clutch apply piston and return spring operation at 10:05
The number of clutch fiber discs versus the clutch plate diameter at 18:00
Clutch disc separation springs at 20:00
Waved steel plate for shift cushioning at 21:53
MUST-SEE: Air Checking Clutch Packs at 23:30
One-Way Devices at 24:42
Sprag clutch at 25:04
Why do we use one-way devices? at 27:23
Roller Clutch at 30:04
Ratcheting Clutch at 32:40
Questions:
- What is the purpose of the Bands in the old Chrysler automatic transmission shown in the video?
- What are the four main components of a clutch pack?
- What is the function of the clutch backing plate?
- What is the function of the clutch steel disc plate?
- What is the function of the clutch fiber disc plate?
- What is the function of the clutch apply plate?
- What is the function of a clutch piston?
- What is the function of the clutch piston return springs?
- What forces make the clutch piston move?
- What is the purpose of a clutch wavy plate?
- Why do you think air checking clutch pistons is a good idea?
- Select one: How far did the clutch piston move in the air-checking portion of the video? A tiny amount, a moderate amount, a large amount, or it varied with each clutch pack.
- The amount of clutch piston movement indicates the clutch pack clearance when the clutch pack is released. Is clutch pack clearance adjustable?
- What is the purpose of one-way devices?
- Tell me one thing you learned or found interesting in this assignment?
Weber State University (WSU) - Automotive Technology Department - Automatic Transmission Lab. A technical discussion of Clutches, Bands, and One Way Devices in an automatic transmission.
We teach current vehicle technologies to our automotive students at Weber State University and online. For more information visit: www.weber.edu/automotive
This video was created and edited by John D. Kelly at WSU. For a full biography, see www.weber.edu/automotive/J_Kel...
Visit my other youtube channel / vibratesoftware to see the amazing NVH app for vibration diagnosis!
Please consider a donation to the Department of Automotive Technology at Weber State University here: advancement.weber.edu/Automotive
![Automatic Transmission Brakes [Reaction Devices]](/img/n.gif)
I,ve been looking for videos regarding automatic transmission but always found people explaining how to change parts instead of explaining how these parts work. But finally I found you professor and want to thank you for your classes. From Lima Perú
This is maybe your first video where we can see how big, full of components and especially clean is the shop. I've wanted to see it for a long time, thank you Professor!
Thank you, yes, it is a wonderful shop!
I gotta say when it come to details you are the best! And I just can't stop watching your videos.
Thank you very much!
Excellent demo. You took what I thought was difficult, understanding how an automatic transmission worked, and made it understandable in just under 35 mins. Thank you very much for sharing your knowledge.
Happy to help, thank you
Thanks a lot for your videos. Amazing to see how automatic have changed in over fifty years
Thanks for keeping us educated in this Quarantine!!
Thank you!
Absolutely a wonderful demonstration!!!..thank you very much...I love this stuff!😊😊
Thank you very much!
I really appreciate your effort to educate us about this topic.
Thank you Sir, you are the BEST.
You are awesome! I don’t even work on my car that much, but I watch your videos cover to cover. I love knowing what’s going on when I drive around.
Thank you
I really am glad I found your channel . You explain everything in such a way I can understand. I also am rebuilding my 92 Chevy four wheel drive so this will help the spraig bearing went out an roughed up some things I had no forward fears but had reverse. So I drove in reverse all the way home. I have it tore down but having trouble finding parts. But I will be watching your class an maybe I’ll figure all of it out. Enjoy it very much. Thanks a lot.
Hope everything is okay with you! It's been 6 months since you posted anything! Say hi or something to let us know you're doing great and maybe let us know when we might can expect more of your awesome videos!
Thank you very much for the knowldge sir. It clears all mud when it comes to understanding tranny
Thanks for watching
Amazing content. Thank you for being so generous with the information. My new favourite channel!!
Glad you enjoy it!
Best info online about transmissions Professor!!
I am a mechanical engineer and I got a job in a company as transmission design engineer. Your videos are so informative and practical. Thanks in advance.
The best instructor ever , greetings from Egypt
Thank you
hello, are we missing you, all right out there?
Thank you again!...I really enjoyed your video!...I learned a lot..I soaked it up!! 😊
Thank you
This man and Richard of precision transmission. Together explain how and why all work. And why lube and friction and or heat. Are controlled and how and why
Thanks for watching
Again! I love these videos! I wish I could take your courses. Thank you
Thanks for these wonderful information
Thank you
I have learned more here in this lecture than trying to read the manuals. wish had done this years ago, wait no you tube. :)
Very good explanation professor!
Clean shop, nice work.
Thank you
Excellent video!
Really complete channel..best of all ..i think!😬
Thank you for the education.
Great job sharing
Just some more complexity that will soon be made history by the advent of EVs.
Thanks for watching
Such an elegant place and sure presentation !!!
My astra automatic gear got its outer shell cracked beyond recovery . All the oil came out . Some say that the gear can be restored excellently by changing the shell . Some say it will never be as good as new again and will be ill all the time .
I wish for your advise because a new gear costs me a lot of money 😓
I'm not a student, just an industrial mechanic by trade (formerly known as a millwright), but still enjoying these educational videos very much. One question: what is usually the pressure applied by that B2 brake piston by the hydraulic system?
Thank you. I believe the fluid pressure applied to that brake can be anywhere from 70 - 280 psi (482-1930 kPa) based upon the engine load.
The 10 speed transmission is developed based on ZF's 8HP gen2, and you can find similar B1, B2 brakes design with wave separate springs.
The B2 brake actually has two set of springs, one for the wave springs to separate clutches plates evenly(to reduce drag torque when the brake is open, also benefit for NVH), and the other one is a set of coil springs to help reset the piston.
You're the best thanks again! It is easy to visualize the break function piston in that the piston is not rotating and the piston is applying pressure to the plate that is also not moving. How does clutch piston apply force to the pressure plate of a rotating clutch pack?
Thank you very much for these episodes
I want to ask you if there is explain about dsg transmision and how can we fix it ?
You are great man prof, sorry my question is that one of these manufactures used special fiber disc material with out or with slightly waste and pollution in order to keep the fluid clean with the best efficiency lubricant condition for along time.. thanks
Wow, you have a cut open version of the A343F Toyota trans. I have one in my 97 Land Cruiser that still seems to be in good condition but I'm trying to find info on it. Wish I could attend your transmission class just to get up to speed. I have a 2005 Chevy 3500 Duramax, Allison 1000 trans. Want to add a torque converter with the billet cover, go through the clutches and add the 5-6 speed conversion kit. Seems like there should be a work around on the valve body and TCM reprogramming. I see that you have videos on several vehicles I own. The Lexus 8 speed video was great, I have a 2014 LS460 L AWD and it uses a variant of that trans, just a deeper final, think it's like 3.14. And then a Toyota 2013 V-6 which you also cover in details. At 66, I'm running outta time. Haaa.
I have a question on the clutch/brake pistons, Do they work like regular hydraulic cylinders as they are a CLOSED unit, Or do they have a way of bypassing some of the fluid while maintaining the pressure on the packs? I want to say that I like watching your videos and have really learned from what I have watched. Thank You for all these videos.
We are waiting for your latest videos professor.
I would love to see a tear down of the 10r80 and see what your opinion is of it
Thank you, I plan on it
Question: What shaft is the one way device on a AA80E located on..? And how exactly is it actuated when you go into low gear?
first thinks you proffSAMI شكرا للك
Thank you
Thanks for the presentation Prof Kelly but I think the country would be full of better drivers if we all had to drive manuals. Automatics enable us to see drivers with a drink in one hand and a burger in the other, something we don't see in countries with less or no automatics prevalent. Also manuals, except for needing clutches replaced, almost never break
Thank you sir, for each of your demonstration and information, this is really really very useful to my daily task,if somehow I get incounter an Automatic transmission faulty.then nothing to be worry for me, how to handle it. I am a GSE maintenance technician. Thank you sir,.
Thank you
The cutaway A131L is fascinating - I had a 2000 Corolla with one of those in it - how I have a 2000 Prizm with the A245e. Cheap little beaters that just go and go.
The 131L wasn't particularly enjoyable to drive attached to either a 1ZZ-FE (my car) or a 4A-FE (my Grandma's 96 Corolla).
Thank you Professor! Do you think YOU can knock off some VENTILATORS for our country? Keep up th e good work!
Thank you, lol, I cannot help with that.
High professor, could you do a video of rebuilding a Mercedes Benz 722.6
transmission, aka NAG 1?
BTW, love your videos, very informative and that's coming from an aircraft mechanic/QC inspector.
Great suggestion! Thanks for watching
Thanks for the knowledge. I was wondering what is the purpose of these wave-shaped springs. Maybe that's why motorbike wheel spins slowly when bike is on the center stand, not in a gear and I rev it a bit. A bit of friction between steel and fiber plates as they usually don't have these elements.
They help cushion or soften the clutch apply.
@@WeberAuto Thanks. Was my assumption that they help separating clutch plates preventing spinning of the wheel not correct then?
@@MariuszZaleski13 Yes, you are correct about the thin wavy plates. I thought you were talking about the large plate.
IF I was to guess, the wavy springs in between the steel plates are mainly to reduce friction (when clutch is not applied) for better fuel efficiency, and not so much for reduced clutch wear.’
Do Any DTC like the Acura MDX/RDX have those wavy separator springs?
Really appreciate for this Professional education...
Is there any institute/collage to learn E-bike/E-Car technology
Essentially converting gason vehicles to electrical vehicles...
Thanks
He deserves to be a professor
John, I am not familiar yet with the new 8-10 speed automatics. I see that a couple of the clutches in your demonstration have steels with no outer teeth. Can you explain their way of holding please.
Hi, I have questions plz help.so my question is that does all wheel drive cars have transfer case if yes what cars have? And where it is located in all wheel drive cars?
When you start sandwishing the plates when your in a rebuild, do you apply transjel, some atf fluid or soak them first in atf? And my second qeustion is, does the friction material stick to a magnet? Thanx
Hello, use transmission fluid for soaking and lubrication. Transjel is only for holding pieces in place while assembling. Friction material does not stick to a magnet. Best wishes.
@@WeberAuto so, the frictionplates have to be soaked? How long maybe?
@@abourawaaha8399 I would do a 24 hour soak(you cannot soak them too long!) days weeks months, years would be fine, as long as in sealed container.
Hello dear John
I deeply love you. Do you have pdf about principle of automotive to share for us???
Love your demos can you get hold of a Tesla set up?
I am still trying to get one ;)
@@WeberAuto Rich rebuilds would probably pay you to take some of his stuff :-P.
lol
When are the new ford videos coming?
What is so special about the ZF 8HP automatic transmission? Why does it stand out from other similar 8 speeds torque converter automatic transmissions?
It has a genius planetary gear set design through a multiple generations of computation instead of traditional planet gear sets like Lepelletier, CR-CR, Simpson, achieving a well balanced design of: (1) four degrees of freedom. (2) optimized step ratio of each gear and the overall gear ratio(7.0~8.6). (3)low torque loss, only 2 clutches/brakes open at every gear. (4) quick and agile shift(skipping gears is almost possible in every gear) for sportiness.
With the help of the wave separation springs and the integrated centrifugal pendulum in the DMF, the efficiency is increased further more.
ZF has also registered multiple patents about 8 speed designs using traditional planet gear sets before 2010, and it has find none of them are match for the actual 8 speed design.
EPA has published a benchmark(by FEV) on Gen1 8HP and several other transmissions(incl Aisin Gen2 transverse 8 speed), confirming its excellent efficiency.
Would a bad sprag cause a transmission to slip then?
Hi i have a problem I have a car that runs good on flat road with full power..but on a stop and go on a incline engine bogs down as if something lockup engine at 760rpm .. on incline throttle is MAX 100% but rpm is 750RPM..Can this be due to Bad Torque converter..? on flat road i see all is normal No DTC codes....SUV is Ssangyoung kyron D20DT benz engine..
I have Toyota Land Cruiser I hear clanck when I shift from reverse to drive or from drive to R , would you please tell me why?
An accumulation of backlash between gear teeth from the transmission to the tires.
Hi sir
I have Chrysler 200 AWD 2016
And I have a light AWD SERV in monitor
You can tell me
How can I check and solve this problem?
hello 👋 my friend can you tell me what problem CVT transmission Kia forte and Kia soul . thanks
Anything electric planned in the near future?
👍
Thank you
Dear friend I'm interested these classes where I can find them in T.x area please let me know
Hello, right now they are part of our regular college curriculum. See www.weber.edu/automotive. We may offer more online training in the future. Thank you
can i send you a video about automatic transmission.
I have one problem with a car name, TOYOTA COROLLA 2007,and my problem is that automatic transmission is stuck on 3rd gear, so please help me i am in big trouble.
With a manual transmission, especially in a driving school car, you have the change the clutch when it’s worn thin. Don’t these clutches wear out? Are they ever replaced economically?
They do wear out, but normally last a very long time. Abusive driving will accelerate the wear.
Hello my friend watching here in United Arab Emirates Emirates good luck
What happened y'all still going making videos
Is your site closed now,no vid for a long time ,hope you ok
I am finally moved into our new building. Mode videos to come soon. Thank you
Heloo sir where are you from?
Dumb question: how is the function of a "throw out" bearing accomplished