Allison 1000 Automatic Transmission Power Flow
Вставка
- Опубліковано 25 вер 2011
- Weber State University (WSU) - Automotive Technology Department - Transmission Lab. Allison 1000 MW7 6-Speed and M74 5-Speed 6-Speed Automatic Transmission Power flow. The Allison 1000 is built by Allison Transmissions, a General Motors owned company. This transmission is typically used in 2001 and newer Chevrolet Silverado and GMC Sierra Heavy-Duty C and K series pickup trucks with the Isuzu 6.6L Duramax engine. This transmission uses a simple planetary gear set to drive a Simpson planetary gear set (common sun gears).
The following summarizes the changes to the Allison 1000 over the years:
(2010 Uprate) MW7 - Strengthened to handle the higher torque capability of the 2011 model year Duramax LGH and LML engines.
4th Generation MW7 - Added 6th gear and other software refinements in 2006. Used with the 2006 - 2010 LBZ, LLY, and LMM Duramax engines.
3rd Generation M74 - Added Solenoid "G" to the valve body to modulate main pressure at an idle to quiet the oil pump and reduce engine idling loads. Used with 2004 - 2005 LB7 and LLY Duramax Engines as well as the 8.1L Big Block Chevrolet Engine.
2nd Generation M74 - Valve body and case changes as well as software refinements to improve shift quality, shift timing, and shift speed. Added "The Sound of Power" VHS video to the glove box to explain why the Allison noises and clunks are good. Used with the 2002 - 2003 model years and the LB7 Duramax and 8.1L Big Block Engines.
1st Generation M74 - The original Allison 1000 installed in the 2001 Chevrolet and GMC Sierra Trucks with the LB7 Duramax engine.
This video helps demonstrate NATEF Task A2.C.10. " Diagnose transmission/transaxle gear reduction/multiplication concerns using driving, driven, and held member (power flow) principles.", a priority 2 task.
Download the Allison 1000 Power Flow Table here: www.weber.edu/wsuimages/automo...
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
From someone that has worked on cars all of my life, this is the first time I actually came to understand what happens inside an automatic transmission. Thanks for the post!
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Good catch, I forgot to include it while shooting the video. Reverse is accomplished by applying the C3 and C5 holding clutches and driving the rotating clutch housing with the turbine. The reverse gear ratio is 4.49:1. Reverse can be accomplished even if the transmission is unplugged from the electrical system because the default "normally open" or "normal closed" power off state of all the solenoids allows it to happen.
I have watched many automatic transmission videos and animations, this one helped me understand what is going on, more than any of them.Thank you!
Thank you very much for helping me in understanding automatic transmissions that have been for my a taboo for many years as a mechanic, and for helping me getting prepared for my ASE test. I will follow your transmission videos.
amazing video, you sound more like an academic rather than a random repair shop guy. I admire you, thank you so much for putting time on educating others.
Thank you!
I like your straight-to-the-point way of explaining.The one thing I still do not visualize, is how the clutch packs break and release the drums of the planetary gears and the clutch housing.
+Max oobbxxx Hi, see my other video on that topic, it may be more helpful. Thanks for watching!
+WeberAuto HEre is the video link ua-cam.com/video/5piYEX-jRt4/v-deo.html
Good explanation! Studying the Allison transmission series in one of my classes right now and this was very helpful.
Been looking forever for someone to explain autos in a way can understand. Thank you!
Thank you greatly for posting this video. It has the potential to help the rest of the car world understand planetary transmissions.
Wonderfully demonstrated, most magnificent design thanks be to our brightest minds. Here's to the industrious, brilliant engineers and tool makers who make turning the wheels of commerce possible.
Wes Sugg Thank you!
Sad thing is the Allison 1000-2400 design came from a design written on a bar napkin after hours
Manual transmissions were simpler and separated the drivers from any idiot who could crawl his way behind a wheel, gone are the days when they tested your metal by putting you in a twin stick or a 2 speed rearend truck. Now any idiot is allowed in the large vehicles and they cost thousands to have fixed and there is no chance of doing it yourself, Easily 5 times as many moving parts inside, oh yea you have very little if any control over what gear you in or when, garbage if you ask me, one of my biggest mistakes was buying an Allison in a truck I depended on
Wow thankyou for the video! Been trying to get my head round how these things work and youve just made it seem really simple! Wish i had this gearbox instead of the 4l60e! Its made me realise how much stress those 3-4 clutch packs were under with your demo!
Thank you
Very good explanation I loved every second of this video...... Thanx helped a lot
Great video for power flows i normally do Eaton Fullers and never touched any autos and this was very helpful for my understanding of the clutches and brakes of the planetary gear sets
very knowledgeable instructor...
Hi, the clutch packs can be used to stop a ring gear, a planet carrier, or even a sun gear; it is dependent upon the transmission design. Clutch packs can also cause gear components to rotate under power. Each set of planetary gears can provide two underdrive gear ratios,direct drive, two overdrive gear ratios, and two reverse gear ratios. Typically there are only one useable underdrive, overdrive, and reverse gear ratios though.
Informative video, excellent production quality - I'm learning about automatic transmission and this really helped put it all together.
This is essentially revealing magic - I even see some mechanics saying that. But wow, I’ve actually learned something here.
Thanks for watching
i used to make the steel clutch plates & some other transmission parts for G.M. used in this transmission. its nice to see how they are actually used & work together. thanks for the info
Thanks for watching!
great videos from weberauto. I understand in detail every time
Explained very well. Definitely better than those animated videos. Thanks for teaching me!
+RedstoneWolf Thank you!
Fantastic demonstration! Thank you!
+UCanDoIt2 Thank you!
Very informative! I have to say the planetary automatic transmission box is simpler than manual transmission except for the electronic control.
Thanks for the reply. It's great to have this information at my fingertips. I want to get into some diesel stuff on the side, and this will *definitly* help me at the dealer. Thanks again for the great info!
Nice! Reminds me of my days in the transmission shop.
your the last of your kind I don't know how to thank you enough for this information I wish they would have classes or instructors like you today that don't mind teaching younger generations we are loosing skilled people like you hope I could be as good as you when I get older and have more experience thank you sir!
+Ray Martinez Thank you very much. I feel the same way.
Great video with great explanation.
LearningZon
Thanks for the free lesson! This is great!
Hi, Good question. No, it would bind up because the C2 clutch turns the P2 ring gear which forces the P2 sun gear to rotate. the P2 and P3 sun gears are connected together with an intermediate shaft. The P2 and P3 gear sets are Simpson style gear sets and are driven by a simple gear set P1. Also, realize that 6th gear is already a double overdrive with a gear ratio of 0.61:1, a 7th gear would be a triple overdrive and could be difficult to utilize.
Thanks for the upload - great vid
+Fulton Fortner Thanks for watching!
Thank you for your great videos
Thank you very much, no question!
It's me,
Sule Shangodoyin.
+Sule Shangodoyin Thank you!
Great Demonstration & Explanation ! Awesome Video!!
Thank you!
What a monster ! Just a bit stronger than the old power glide
Very clear explanation…. Very passionate and learning curiosity needed
Great video. Many thanks!!!
Thanks for posting. Very explainatory!
amazing videoi it really helped me ti understand how automatic transmissions works
good demonstration!
Great Video!! Thanks for the knowledge.
+Taninwat Wissawakornrungrot Thank you!
Dude this helped me so much, thank you.
Glad to hear it! Thanks for watching
Starting to understand auto boxes more now thanks, but if you the expert gets a little confused there's no hope for the rest of us!
+jezzerouse3 Thank you!
Very excited to come across this channel. Subscription paramount.
Thank you very much!
For those who dont know the 6l80e in half ton and 90e in 3/4 ton and up are based exactly off the allison amazing design and stupid reliable if taken care of the 6 speeg gas trans was first introduced in 09 and has proven itself time and time again just like an allison
HI, good question. The C2 clutch turns the P2 carrier and the P3 ring gear as an assembly. The C5 clutch holds the P3 ring gear from rotating. The transmission would lock up if you applied both the C2 and the C5 clutches.
Very informative, thank you!
Good powerflow demonstration.
Ready for the dyno test
Thanks for watching
Yet another great video from you Mr. Kelly! I really admire Your effort to present quite complex stuff in a manner that is easily understandable. Thanks for another great lecture.
+Kaktus Jack Thank you very much!
That was very helpful thanks
Piece of advice, we don't' want a history lesson, just it works thanks
I did get the names mixed up there, sorry for the confusion. There are only 3 planetary gear sets from front to back: P1, P2, P3. There are 5 clutch packs from front to back: C1, C2, C3, C4, C5. C1 and C2 connect power to the planetary gear sets, the C3, C4, and C5 stop parts of the planetary gear sets. C3 stops the P1 ring gear, C4 stops the P2 ring gear, and C5 stops the P3 ring gear. The different combinations of rotating and stopping gear set parts gives us the various gear ratios,
tanks for the video. I didnt understand how different clutches apply in different speeds automatically
Thank you!
Very nicel explained. Thanks!🙏
Why am I still here ?
And is this a magic ?
Technology at the tips of the mechanics. Thanks.
Thank you!
AMAZING, thank you!!
Thank you
Great video! It's amazing how mechanically simple this transmission is. No sprags/roller clutches, only 2 clutches and 3 brakes. The older 4 and 5 speed automatics seemed to be packed full of bands, clutches and those terribly unreliable one-way clutches. I suppose the all the complexity has moved from the hardware to the software now, since you can just "program" a smooth shift in software, instead of having to figure out how to do it hydraulically or mechanically.
+American Locomotive Yes, it is a very simple mechanical transmission. Thanks for your feedback!
Awesome video.
With it's known reliability, strength and especially the dual overdrive , I would think this transmission would be a great choice for racing.
Awesome explanation!
Thank you!
thanks for that explanation :)
excellent work mate
Thank you!
+WeberAuto thank you once again 😀😀😀
WOW, that's crazy knowledge. Thank you, We're all better off having heard that detailed explanation. I always wanted to know how the heck they get 2 speed out of a single gear set. One suggestion though, you should try to hook up a slow motor drive to see it turn without having to use your hands. But totally awesome, I'm going to try to make a static display like that one.
Thank you! Good idea!
COOL VIDEO SIR........ I WAS LOOKING ONLY FOR THAT.... THANKS
Thank you!
Thank you for the video. Just to be clear clutches wear out!
Yes, of course they do
Good catch, that is my rocky mountain vernacular. I should have pronounced "turbine" with a long "i" sound.
It's ok mate. Awesome demonstration regardless. Thank you
Great video, kinda sad tho, I believe I watched a later video 2 from 2013 where this gentleman was in a electric wheelchair. I hope his life is and has always been good
Thanks, muscular dystrophy is slowly talking me down. Thanks for watching
Starts explaining at 3:10.
Great video!
exclusive......... Great effort
You're the best.
Great!!!!!
I just watched it carefully & was thinking the same thing , then saw your reply.
Good video thanks!
Thank you!
Yess yess master tech thanks. I understood more with just this video about automatic transmissions than in class. Lol
+Gabriel “gabriel776” Aguilar Thank you!
+WeberAuto by the way real quick if you can or have time, How can i change my name From Gabriel "gabriel776" aguilar To something else? Your video actually helped me pass a test i studied it lol.
Amazing to think, this was made in the past 108 years of humanity. Why now? Who in the hell thought of this thing?
Patrick Kane Thanks for watching!
Allison
Good illustrations there is need to talk about the lubricant level and lubrication as well. Thanks
Thanks for the feedback!
Respect..
Great Vid, Now i know how my trans works in my HD.....I did get a little sleepy toward the end.. :)
You should make a kind of claw handle to help turn the c2 clutch housing....cool video! I haven't seen the auto transmission demonstrated this way before...
Goooooood👍👍👍 demonstration ...Keep it up
Thank you!
Hi, there are more differences between the 5 & 6 speed transmissions than the TCM and valve body. There are torque converter, case, clutch pack and piston changes for durability too. True, you can make a 5 speed have 6 speeds, but it is not the same as a true six speed. 6th gear is only a 10% change, hard to justify the cost. To answer your question, don't forget the P1 sun gear is always driven without a clutch by the turbine, this eliminates the potential for additional useable gear ratios.
thanks
very good information
Thank you!
tremendo program muy com plet y facil de entender
Thanks for the demonstration, very informative!
+Cory Rodriguez Thank You!
Hi, Bands can only stop planetary gear set parts. Bands are not as heavy-duty as clutch packs because they do not have the same surface area.
You should make a video on turbo and superchargers too!
Thank you for the feedback
Wonderful Indonesia 👍🏻
Thank you!
Which Allison is used on a 444 (7.3) navistar? I have a ford with a 7.3 PSD dump truck which has a e4od which fails. Can these be retrofitted to the 7.3 PSD? I am aware mini school buses have 7.3 with Allison's. Thanks
I do not know, but I suspect it is a 3000 or 3500 series. Allison makes 3 speed through 8 speed HD transmissions and has many different model options. Sorry I could not be more helpful.
very informative video sir... thanks allot.. do you also have manual transmission video?
+Shubh Vegas Thanks!
Couldn't you get a 7th gear by applying the C5 clutch and turning the C2 clutch housing? Or would the gear ratio be undesirable?
+Joseph Tilitsky Hi, no, that would actually lock up the transmission and kill the engine. The C2 housing is connected to both the P2 and P3 sun gears. (A simpson gear set). The C5 clutch stops the P3 carrier from rotating.
Wow interesting video. So, sixth gear was in there, but the computer said you can't use it? Wow that's cool.
Steven King Thanks for watching!
Thanks for showing to us, I would like to understand how torque converter is always full, and from where the atf goes to him? Another doubt is how the axis are made and how many holes are inside there?! Also, how the break bands work? How bell housing is made!?!? Thank you, till next video!!!! Please, Brazil watcher here.
Change the fluid and spin-on filter regularly,, don't loose or accidentaly throw away the spin on filter magnet.
+WeberAuto Thanks for the video, very well done.
Following the shifting pattern through all 6 gears, (C1+C5, C1+C4, C1+C3, C1+C2, C2+C3, C2+C4), what would happen if you were to apply C2 and C5 after 6th gear?
+Cobrajr122 Hi, the transmission would lock up because C2 turns the rear two (P2 and P3) sun gears and C5 stops the read (P3) ring gear. Good question. Thanks for watching!
Hi John,
Thank you for the very informative videos. I've learned so much from watching your videos. I had no idea how an automatic transmission worked before.
One thing that I seemed to have missed in all your videos is about clutch packs. I realize that the steel clutch plates stay fixed with the transmission housing and are squeezed together to apply force to the fiber clutch plates to stop a particular planetary gear set(s) from turning (essentially like brake pads on a rotor). The question I have is ... it seems like there isn't a lot of force exerted on these parts? Is that correct? Otherwise the fiber plates would wear very quickly? Essentially the way I think it works is the power is always looking for the path of least resistance through the different planetary gear sets and clutch packs. In other words, the clutch packs are really only stopping the inertia generated by the weight of the spinning planetary gear set and not engine torque (or minimal engine torque).
I'm trying to also understand how the Aisin Warner AF40 works with regard to clutch packs. The literature describes the shifting of gears being managed by a sophisticated computer program which oversees a clutch-to-clutch actuation. Gear changes are accomplished by one clutch engaging the instant the clutch from the previous gear disengages so I think that would be different than this Allison as there is no "neutral" between shifts - is that correct?
C Collins Hi, check out my video on planetary gear set operation. ua-cam.com/video/5piYEX-jRt4/v-deo.html I cover all of those topics. Get back with me afterwards if you need to. Thanks for watching!
came to brazil for to teacher ,here in brazil no one know about these transmissions
Well done video. What about would happen if you applied the c5 clutch pack after releasing c4 when you were in sixth gear? Would it bind, or would it be another gear?
Thank you! It would seize up and stop rotating. The C5 clutch stops the P3 Ring gear. The C2 clutch rotates the P3 Ring gear.
Okay, I thought that, but wasn't sure. Thanks for the reply
The 6 speed came into play in the 2004 1/2 LLY
Negative. In the 06 LBZ models.
Double negative.
Good beles you working
my 02 duramax only has reverse. the gear shift highlight blinks when I give it any amount of throttle once in gear! seems like a pressure issue ? cs
selinoid issue ?
It could be any of dozens of things causing this issue. You must get someone with a a scan tool to check for trouble codes, then follow the diagnostics for the code(s). Best wishes.