There was an old transmission guy near where I used to live. He was closed most of the day, worked all night. It was always nice to see something happening when I was on one of my late-night walks.
Years ago, while putting a shift kit in a th350 I missed that the paint was all worn off two springs of equal size. Knowing the possibility they had different rates I took my valve body in a shoebox to our local transmission guru, in delco it's a place called Pat's. The guy was impressed that I had the courage to do a shift kit myself and he flat filed and assembled the box of parts so fast I almost missed it. I remember having to leave 20 bucks on his workbench as he refused to take any money. I said please buy yourself lunch, you just saved my project and daily driver
My nephew recently finished rebuilding his first transmission, a 4L80E. He did a beautiful job and it runs great, despite being badly beaten by the previous owner. While we were buttoning it up, he mentioned, "I was looking forward to this job so I would learn how an auto trans works, but now that I'm done, I still have no idea." I responded, "I felt the same way after my first trans, and even though I've done a few more since then, I still have no idea either!" LOL
When I was a kid I put a TransGo shift kit in my 727 on my gravel driveway. I dropped one of the check balls into the gravel. My heart sank. Luckily I was able to find it (in the dark). After I installed that kit, I had to start chaining the engine down to the k member. Every time I got on it I would break an engine mount when it shifted. I hate working on automatic transmissions. The fluid crawls up your arms like an alien slime monster.
My 1rst trans was a 727 police intercepter factory installed in a '68 Road Runner. I was doing 115 MPH and decided to put the trans in neutral and coast. OOPPSS ! I hit reverse. Overhauled the trans but never cleanes the converter. After dropping the pan several times to replace the clogged filter a valuable lesson learned. After that I have repaired aprox. 100 auto trans until manufarures went Black box !
Back before the invention of fire, I took a 2-spd Powerglide out of a '62 Chevy Impala. The service manual didn't tell me what I needed to know to disassemble it, but I got it apart and destroyed pieces trying. I bought a transmission from a junkyard and put it in, and now everytime I see a white '62 Impala at a car show, I mentally give it the finger.
We had a transmission guru in my town who had basically retired due to age and illness. Nobody after he quit. I had asked him if he could repair my 727 after I tried it due to the pressure rod not be seated correctly on the shaft at the trans. I had also told him I had a Direct Connection shift kit in it. He looked at the directions and just by looking he said that must have shifted hard. It did, it would bark the tires even on light acceration.
I learned the hard way to always replace the rollers and springs in the overrunning clutch in the rear of the case. I just did seals 'clutch pack steels , and friction discs in my 69 340 cuda 727.It worked fine but the valve spring shims in the 340shredded because the inner dampers were much harder and the debri' all got sucked up and wasted the crank during a late night excursion. I was just freshening up the 727 while I had the engine out and it last only about 5000 miles before it started screwing up due to that rear clutch.
I'm a transmission guy. Honestly? Business has really picked back up. It was fading for years, but I think the sharp rise in used car prices (and new car un-availability) has really made it cost-effective for ordinary car owners to pay for transmission rebuilds again. Because, as you say, they're so complicated now, they're expensive to repair.
For those who want to go into the auto transmission further. The hydraulics in the transmission, whether controlled purely hydraulically or by computer, are there to operate wet plate clutches at the appropriate time and the hydraulic fluid is used to provide viscosity for the torque converter and lubrication everywhere. In a manual transmission the driver shifts gears and this is done by releasing one pair of gears at a certain ratio while locking up another pair of gears at a different ratio. Easy to see and understand when you open a manual transmission. The key to understanding an auto transmission is to understand that everything is on a single shaft. The magic of changing ratios happens in the planetary gear sets. You have the "sun" gear in the center of the planetary gear then three "planet" gears between the sun gear and the outer ring gear. The planet gears are attached to a carrier which is the output side of the planetary gear set. Any of the gears, sun, planet or ring can be locked so that it cannot turn. Locking the carrier gives reverse. Locking the ring gear gives a certain ratio while locking the sun gear another ratio. The input drives either the sun gear or ring gear. The output ratio depends on which. The sun gear is generally larger than the planetary gears which gives a certain gear ratio. The ratio between the planet gears and ring gear another. Multiple planetary gears are used to give more ratios. The video linked below gives the basic operation of a single planetary set. ua-cam.com/video/ARd-Om2VyiE/v-deo.html The next one gives an overall view of how multiple plantaries work together in the transmission. ua-cam.com/video/u_y1S8C0Hmc/v-deo.html
thank you Tony I started building at age 13 or 14 can't remember I'm 62 but there not as complex as you might think it's only a mystery till you dive in but thanks for the complement now it's software not shift kits.
If anyone needs a good transmission shop in the Raleigh NC area, Messer Transmission will take care of ya. They just did a beautiful job on my Cruisomatic in my 66 ford Galaxie
A real good trans guy showed me how to use a long piece of bailing wire and as you disassemble put the wire thru each part as it comes out, as you reinstall you can't put the part in out of order or the wrong direction, bullet proof.
I work for a foreign auto manufacturing company in the US. I'm fixing these cars as they come off the assembly line. Most of our Transmissions are overly complicated beyond belief. Most of our Transmissions replaced the Starter, as in the Transmission is the Starter. That blew my mind when I found this out. Not to mention the High Voltage side of the Transmission and the parts related to it. These cars have a High Temp Coolant for the Engine and Heat, but they also have a separate Low Temp Coolant side for the High Voltage components that also run through the Transmission!?!? It really is unbelievable how complicated the Transmission is. It really makes me appreciate the C6 in my F100 haha. Thanks for this Uncle Tony! Cheers 🍻
My 68 charger has a HD 727 rebuilt, and all I know is he did everything, it was mind boggling when he tried to explain what he did, all I know is he had to do some machine work to put in some type of better thicker bearing thing in this is stronger then original and rebuild everything else, and gave me to give to restoration a bunch of directions on how to install with sharpie marks all over transmission 🤪
Atsg Automatic transmission service group Makes excellent books for transmission repair Whenever I have to do a transmission I always buy there book for the trans and follow it from step one to step done
I started and owned a transmission shop from 81 to 2003. We only did transmissions. Auto repair guys looked at trans as voodoo. I rebuild hundreds of trns in those twenty some odd years. They were always simpler than motors, although I built motors for myself. I won!
Drive ratio is an important element in many machines. Especially bicycles. For reference: T46:16. (2.75) + 20" acceleration ratio T53:11. (4.818) + 700c road bike overdrive My 20 inch wheel Spaceframe Moulton bike runs out of ratio at 40kph around Albert Park even in 20kph headwinds. While fitted with its single ratio 64:12. (5.333) wheelset However when I fit the wheelset with 2ratio Sturmey Archer SS hub gear with 38% overdrive T64:13. (4.923) T64:13. (6.793) It provides a big top speed gain only when momentum and inertia are properly harnessed. And wind resistance minimised. Note: the same chain ratio on a smaller wheel has a lower top speed when compared to the same ratio fit to a larger wheel. But a smaller wheel catches less air and is smaller diameter to overcome. All the resistances stack up
We use to put shift kit in our 727. (we as my familly had 5 Dodge Chargers with 440-727 and 1-440 six pack 4speed) With the instructions, it was not rocket science. It explained well with the carton sheet where to drill bigger passage and change springs with ball bearings in the valve body. I understood back then how complicated the hydrolics and valves body, cerveau, pistons, bands so i never really wanted to mess with that. Its thrue that it needs a good knowledge of the engineering of transmission to play with the dynamics of it. Tony sounds funny when he says; now they have, 5..6..8..10 speed with computers. If he thinks its complicated, i ear him 100%. Hahaha. Nice content and i get something out of it each time. Thanks to you. Even it its well explained, we still need to practice these skills cause it aint easy as it sounds. I need to fix my reverse on my Winibago 727. Good timing. Hehe!
having a manual transmission apart is easier to understand because you can see the forks and rods that physically shift the gears. in an automatic thats all fluid basically and you cant see it.
Wow, we had to learn how to do every repair procedure from bumper to bumper, at NAVTS in WestNashville, including transmissions, differentials [ front & rear ], manual steering gear, & power steering pumps & gears, engines, brakes, ect. if it was on an automobile, we had to test, remove repair reinstall and re-test 1 of every thing.
I managed to make an automatic transmission in a video game called besiege, made a video on it ! Using little grabbers as clutches, routing the power ! Now its not close to real life but using clutches to reroute power to the sun gear and the planetary. Same concept and the process of making one helped me figure out how they worked. Little gifs and diagrams werent doing it for me.
I rebuilt the 727 in my wagoneer. Started it today moved it. I need to retune my carb. I am not sure how to set the manual value pressure on the carb. Seemed like I had to give it more gas in reverse than going forward. I need to go watch the carb tuning video again. I want a trans shield in my wagoneer. Put a shift kit in too.
Had the power wedge fall out of my 98 ram v10 47RE Torqueflight. the internet said to rebuild, I said no im reinstalling the band wedge and adjusting the slop out of the band. I started at 12 noon, didnt finish till 2 oclock in the morning. It worked perfectly. Remember to adjust ur bands from time to time.
I could sort out a manual easily enough back in the day but automatics were always a mystery. I get the principal but how anyone figured out how all those channels and tubes and hydraulic fluid work together, well I couldn’t ever make work in my head.
Growing up I always thought witchcraft was complete nonsense, crazy talk. Then I learned how an automatic transmission operates, I've changed my opinion on witchcraft
As a man who grew up in a blue collar family and now spend all of my time working in tech at an office, it's so comforting and cleansing to have UTG on in the background while I push 0s and 1s around. Thank you for this content!
I rebuilt my TH400 last year. This was the first time working on any transmission. There is so much great information out there if you sort through it all. This was one of the items on my rebuild that I considered having done elsewhere. I've had zero problems with mine and am so happy that I took the dive into trying it myself.
transmission shops are folding like alot of shops because the information needed to rebuild them is readily available on the internet. we have people that will rebuild a 4l60e for 675.00 on craigslist and warranty them. the work in transmissions is pulling them and installing them. a 4l60 e can be completely disassembled in less than 5 minutes.. and reassembled in another 5 minutes.,, yes cleaning takes time, mic parts take time, but its not grueling, tedious, or complicated work. also most trans shops take shortcuts and dont actually rebuild them, they fix the "problem" send it out and hope it works for a year.
Having the '66 Ford shop manual is what made it possible for me to rebuild a Ford C4 at home during a college break. That manual explained how everything worked and gave a step by step teardown and rebuild. Listed all the must-replace parts, plus it needed a torque converter and the front pump gear. Used two shop benches covered with old bedsheets , as parts came off, picked it up, moved it over a foot and continued until the last part was at the far end of the bench. I also put in a shift kit, which was a couple of replacement springs, a valve spool and a template to drill a hole in the plate. The manual stressed cleanliness, I went through a lot of paper towed and solvent reassembling it. But it worked fine.
UT.....YOU SAID A MOUTHFUL ON THIS TOPIC. THIS AMAZING THINGS ON THESE TRANNYS BACK THEN THERE WAS NO COMPUTER DESIGN, ALL DONE BY SLIDE RULE. THESE UNITS ARE SO MUCH MORE COMPLICATED THEN AN ENGINE. ITS AN AMAZING THING. AS I WAS WATCHING YOUR PREVIOUS VIDEIO ON THIS TOPIC I NOTICED YOUR ATTEMP TO REBUILD THAT UNIT. IM A RETIRED TRANS GUY AND I SAID TO MYSELF OOPS THERE IS SOOOOOO MUCH MORE ON THAT YOUR ATTEMP ON A PARITAL REPAIR . THERE SO MUCH MORE TO THAT QICKIE PATCH UP. TRANNYS ARE THE MOST COMPLICATED MACHINE OF A CAR, ISS A VERY, VERY, VERY TUFF COMPLICATED THING. LOVE YOUR CHANNEL AS ALWAYS.....MOPAR 4 EVER.
You're much more than a mechanic. You're an engineer, electrician, welder, body man, sheet metal mechanic, tuner, fabricator and critical thinker to name a few.
Huh, I've never had a torquflite explode on me and trust me, in my youth, I did attempt to do so on many occasions. Best I ever managed was losing reverse on a74 New Yorker w/ a 360 from excessive 10 grand neutral slams.
Got involved w/ dirt roundy round. Powerglides. Ya drill and tap pressure side of pump, same on return. Run hoses to the driver. He puts it in gear, and slowly closes a valve between the two. Band comes on, and, whoopee!
In 1978 I had a 72 Fury Copcar and the tailshaft broke at the governor hole at 120 MPH. The drive shaft dropped down, bent in half, tore the gas tank then shredded the left rear tire on its way out of the car. I didn't die and managed to piece it back together with the back half of a small block 727. Not bad for a broke 17-year-old.
👍🏻 Glad you made it to 61 Larry! I enjoyed my Plymouth police packs so much then traded the last one in on a K-car. Saved so much on gas it paid for the K! Raised four children through those cars.
Scattered my TH350 on I-10 one day. NO way could I afford a tranny shop. Scavenged around desperately for some random trannies for cheap and bought a TCI overhaul kit and B&M "shift-improver" kit from a now defunct company called PAW--they used to be a big deal back in the early 2000's--and proceeded to shade-tree mechanic that sucker in my dirt floor shed. It took an agonizing amount of effort to keep it all surgically clean and parts organized but I somehow managed it... It was a great experience but not something I plan on doing again.... LOL
I live in a big metropolitan area I went from 10 big trans shops with 3 to 5 people working there to 3 trans shop and only 1 is good. And he will charge from 3000 to 6000 dollars for a stock rebuild. So when my trans when bad I rebuild my self. Ran into a problem and was nice enough and helped me no problem. Thank you Lawrence Transmission.
The old 3 and 4 speeds are definitely simple,.but can be finicky with mechanical with and what not. A lot of the 6 speed transmissions are simpler and more straight forward than you think. CVT transmissions are the ones we stay away from as it seems once they fail it is really difficult to make them reliable again. The issues we are having is mostly getting parts. 6l80 pumps and bell housings are failing at such a high rate they are difficult to.source for example
Been running total seal top gapless for years, at this point I wouldn't use anything else. And they can machine stock rings for gapless,so I use em in pretty much anything,even lawnmowers.
I don't know how well this applies to transmissions, but I have found that understanding a single part of the circuit one at a time makes understanding a system far easier than trying to understand an entire system all at once.
I am also a fan of Richard (Precision Transmission in Amarillo) but he has stopped posting for some time. His forte is GM/Ford/Dodge teardowns mostly. For the more esoteric I would recommend checking out Gary Ferarro's channel (AAA-1 in NY) who does whatever comes in the door (European/American FWD/RWD/AWD etc etc). Richard does performance upgrades, Gary does mainly standard overhauls. Unfortunately, Gary's video quality is pretty poor for these days (not even HD), but the information is still gold.
I'm having an issue with a th400 having no reverse I'm thinking it has something to do with the reverse servo or the band that is applied by it. I have to figure out what's damaged but I don't know where to start. I can buy a pin extension for it but I don't just want to go and do that because the drum could be worn to.
I just rebuilt my 46re in my pickup. 1st time doing this myself. The 46re is essentially a 727 with overdrive. It took more time to clean everything than everything else. A service manual is a must! However I discovered a major mistake in the manual I have and apparently is in several others relating to the overdrive unit. There is a selective spacer that fits into the overdrive piston and the book instructs you to take one measurement and then select the correct spacer per a chart. The problem is the piston and spacer controls two different clutch packs simultaneously. Releasing the direct clutches and applying the overdrive. The book doesn't address the dimension to the overdrive clutches. Found a video by I think precision transmission (I think) and figured it out. Glad I did!
The spacer is for the overdrive direct. The directs are the front clutch behind the pump. The overdrive clearance is obtained by steel / pressure plate combos. Not anything to do with the piston. You're wrong kernel sanders! The bbbbook was right! Tip : if it worked before, put back the stack that was in it. Proof positive.😜
Just rebuilt the 727 in my 1979 D150 a few weeks ago. Guy tried replacing the reverse band with one from a 518. Destroyed the rear drum lol. crazy. 727 was easy to go through and rebuild.
You unlocked a distant memory. As a young 12yo with my first car, I once walked into a transmission shop. Place was like a hospital, clean, smelling of chemical cleaner, guys working with white robes and spotless. And transmissions dissected on top of an operating table.
@P Kudsk some of us break down during winter and need stuff fixed in January when it's -20 outside. If you are a mechanic during winter you should know its part of the job. By all means though, power wash the thing in a heated bay before working on my car. However, i cant garantee that my stuff is gonna be spotless when its -20 outside. Just saying. So i guess you could always refuse icy cars in winter. Im glad for you if you have that luxury. Im sure i wouldn't have that luxury.
@@michaelgarrow3239 what do you mean im that guy? I cant control when my car breaks down. I dont have a heated garage to let all the ice thaw off of it before hand. Haha its not like i enjoy bringing my vehicle in for service in the first place. I will typically do the work myself if i can. I dont trust others to fix my vehicle. Damn near every mechanic i have had the pleasure of dealing with fixed the original problem but caused another. Or fixed problems that I didnt ask to have fixed because i was going to do it myself. I brought a car in for a mechanical fuel pump, and ended up with a new battery, new brakes and a new serpentine belt and then my dual tank fuel system was hacked up and didnt work anymore. Needless to say i never went back and I didnt pay for any of the labor because i hadnt requested anything else be done. Especially since belts and battery and brakes have nothing to do with the fuel pump.
@P Kudsk - I’m more concerned about you getting a guy fired because he didn’t feel like cleaning his spot. And your attitude: which, to put it politely, is as little condescending. 🥱
This reminds me of when I was 18 and knew nothing of engines. Very interesting. Honestly it just makes me appreciate a manual transmission. Big stick move gears
You're right about the mystical. If you really want to experience Dragons and other truly evil entities then take a look at ZF transmissions. Specifically designed to support transmission repair experts.
I try to learn how to do everything even if I’m not good at it as long as it’s good enough to suit me like body and interior I’m going to try and teach myself transmissions
Those new 10 speed Auto's are like those Babushka Dolls that keep splitting apart - Oh there's one drum - there 4 speeds in there, another 3 speeds in that one, 3 speeds in that last one.. dont forget the reverse LOL
I paid a guy to rebuild my transmission. He put the wrong size rings on the main piston so it only went in reverse. So I learned about transmissions and fixed it myself. I highly recommend the channel Deom's Workshop he does good teardown and rebuild videos.
@@DanEBoyd I can't find the story as I've looked for it ,but years ago my dad said he saw a story about a guy who won a new Land Rover for getting a golf hole in 1 or sinking a basketball from half court. They hand him the keys, he drives home and 45mins later it breaks and he has to call a tow truck 🤣 I'd bet your Rover buddy has heard that one.
Anyone else who wanted to straighten Tony's glasses the entire time your watching this?
Precision Transmission is an excellent channel.
Richard at Precision Transmission is a national treasure.
There was an old transmission guy near where I used to live. He was closed most of the day, worked all night. It was always nice to see something happening when I was on one of my late-night walks.
Years ago, while putting a shift kit in a th350 I missed that the paint was all worn off two springs of equal size. Knowing the possibility they had different rates I took my valve body in a shoebox to our local transmission guru, in delco it's a place called Pat's. The guy was impressed that I had the courage to do a shift kit myself and he flat filed and assembled the box of parts so fast I almost missed it. I remember having to leave 20 bucks on his workbench as he refused to take any money. I said please buy yourself lunch, you just saved my project and daily driver
My nephew recently finished rebuilding his first transmission, a 4L80E. He did a beautiful job and it runs great, despite being badly beaten by the previous owner. While we were buttoning it up, he mentioned, "I was looking forward to this job so I would learn how an auto trans works, but now that I'm done, I still have no idea." I responded, "I felt the same way after my first trans, and even though I've done a few more since then, I still have no idea either!" LOL
Mate , u said it all at 9:15 "there's no happiness ".
I taught transmissions at a community college for over 20 years. I loved seeing the look on the students faces when all this started to make sense.
When I was a kid I put a TransGo shift kit in my 727 on my gravel driveway. I dropped one of the check balls into the gravel. My heart sank. Luckily I was able to find it (in the dark).
After I installed that kit, I had to start chaining the engine down to the k member. Every time I got on it I would break an engine mount when it shifted.
I hate working on automatic transmissions. The fluid crawls up your arms like an alien slime monster.
one drop of fluid multiplies into many drops equaling a gallon of coverage. 😆 like "gizmo, wetted with water"
My 1rst trans was a 727 police intercepter factory installed in a '68 Road Runner. I was doing 115 MPH and decided to put the trans in neutral and coast. OOPPSS ! I hit reverse. Overhauled the trans but never cleanes the converter. After dropping the pan several times to replace the clogged filter a valuable lesson learned. After that I have repaired aprox. 100 auto trans until manufarures went Black box !
Been watching precision for a while now that guy is the transmission wizard.
Back before the invention of fire, I took a 2-spd Powerglide out of a '62 Chevy Impala. The service manual didn't tell me what I needed to know to disassemble it, but I got it apart and destroyed pieces trying. I bought a transmission from a junkyard and put it in, and now everytime I see a white '62 Impala at a car show, I mentally give it the finger.
Thanks for the explanation UT 👌
We had a transmission guru in my town who had basically retired due to age and illness. Nobody after he quit. I had asked him if he could repair my 727 after I tried it due to the pressure rod not be seated correctly on the shaft at the trans. I had also told him I had a Direct Connection shift kit in it. He looked at the directions and just by looking he said that must have shifted hard. It did, it would bark the tires even on light acceration.
I learned the hard way to always replace the rollers and springs in the overrunning clutch in the rear of the case. I just did seals 'clutch pack steels , and friction discs in my 69 340 cuda 727.It worked fine but the valve spring shims in the 340shredded because the inner dampers were much harder and the debri' all got sucked up and wasted the crank during a late night excursion. I was just freshening up the 727 while I had the engine out and it last only about 5000 miles before it started screwing up due to that rear clutch.
I'm a transmission guy. Honestly? Business has really picked back up. It was fading for years, but I think the sharp rise in used car prices (and new car un-availability) has really made it cost-effective for ordinary car owners to pay for transmission rebuilds again. Because, as you say, they're so complicated now, they're expensive to repair.
For those who want to go into the auto transmission further.
The hydraulics in the transmission, whether controlled purely hydraulically or by computer, are there to operate wet plate clutches at the appropriate time and the hydraulic fluid is used to provide viscosity for the torque converter and lubrication everywhere. In a manual transmission the driver shifts gears and this is done by releasing one pair of gears at a certain ratio while locking up another pair of gears at a different ratio. Easy to see and understand when you open a manual transmission.
The key to understanding an auto transmission is to understand that everything is on a single shaft. The magic of changing ratios happens in the planetary gear sets. You have the "sun" gear in the center of the planetary gear then three "planet" gears between the sun gear and the outer ring gear. The planet gears are attached to a carrier which is the output side of the planetary gear set. Any of the gears, sun, planet or ring can be locked so that it cannot turn.
Locking the carrier gives reverse. Locking the ring gear gives a certain ratio while locking the sun gear another ratio. The input drives either the sun gear or ring gear. The output ratio depends on which.
The sun gear is generally larger than the planetary gears which gives a certain gear ratio. The ratio between the planet gears and ring gear another. Multiple planetary gears are used to give more ratios.
The video linked below gives the basic operation of a single planetary set.
ua-cam.com/video/ARd-Om2VyiE/v-deo.html
The next one gives an overall view of how multiple plantaries work together in the transmission.
ua-cam.com/video/u_y1S8C0Hmc/v-deo.html
An amazing piece of technology back in the day.
Thanks Tony
Thanks for the explanation. They are complicated and precise. When they work right, they are fantastic. Good Luck to you.
Well now I know a lot more about transmissions than I used to.. which was absolutely nothing
The men who designed these? Were GENIUSES!
thank you Tony I started building at age 13 or 14 can't remember I'm 62 but there not as complex as you might think it's only a mystery till you dive in but thanks for the complement now it's software not shift kits.
Thanks !
If anyone needs a good transmission shop in the Raleigh NC area, Messer Transmission will take care of ya. They just did a beautiful job on my Cruisomatic in my 66 ford Galaxie
im going to do my first 727 ever
Excellent job Uncle Tony very enjoyable and interesting video.
Thank for the link & info on Precision Trans, etc!
A real good trans guy showed me how to use a long piece of bailing wire and as you disassemble put the wire thru each part as it comes out, as you reinstall you can't put the part in out of order or the wrong direction, bullet proof.
Good laymans explaination of a slush box.
I work for a foreign auto manufacturing company in the US. I'm fixing these cars as they come off the assembly line. Most of our Transmissions are overly complicated beyond belief. Most of our Transmissions replaced the Starter, as in the Transmission is the Starter. That blew my mind when I found this out. Not to mention the High Voltage side of the Transmission and the parts related to it. These cars have a High Temp Coolant for the Engine and Heat, but they also have a separate Low Temp Coolant side for the High Voltage components that also run through the Transmission!?!? It really is unbelievable how complicated the Transmission is. It really makes me appreciate the C6 in my F100 haha. Thanks for this Uncle Tony! Cheers 🍻
Great video, I have to brush up my knowledge on my wife's torqueflite in her 1958 Desoto
My 68 charger has a HD 727 rebuilt, and all I know is he did everything, it was mind boggling when he tried to explain what he did, all I know is he had to do some machine work to put in some type of better thicker bearing thing in this is stronger then original and rebuild everything else, and gave me to give to restoration a bunch of directions on how to install with sharpie marks all over transmission 🤪
Don't forget to replace the trans cooler! It will be filled with metal ad well.
I’m convinced that there is no such thing as an automatic transmission. It’s really just a tiny person inside the transmission shifting it manually.
I love rebuilding old school transmissions,they're easy to me and I love reviving peoples transmission and watch thier face go from sad to happy.
Atsg
Automatic transmission service group
Makes excellent books for transmission repair
Whenever I have to do a transmission I always buy there book for the trans and follow it from step one to step done
I started and owned a transmission shop from 81 to 2003. We only did transmissions. Auto repair guys looked at trans as voodoo. I rebuild hundreds of trns in those twenty some odd years. They were always simpler than motors, although I built motors for myself. I won!
I Always follow Richard’s instructions at Precision Transmissions when servicing my transmissions. Good,honest and professional guy.
Yeah. 87 ram charger. 3.90's on 35's. Blew reverse gear. Definitely thinking NP 435 with all the extra parts I got laying now. 🤔😆
Drive ratio is an important element in many machines. Especially bicycles.
For reference:
T46:16. (2.75) + 20" acceleration ratio
T53:11. (4.818) + 700c road bike overdrive
My 20 inch wheel Spaceframe Moulton bike runs out of ratio at 40kph around Albert Park even in 20kph headwinds. While fitted with its single ratio 64:12. (5.333) wheelset
However when I fit the wheelset with 2ratio Sturmey Archer SS hub gear with 38% overdrive
T64:13. (4.923)
T64:13. (6.793)
It provides a big top speed gain only when momentum and inertia are properly harnessed. And wind resistance minimised.
Note: the same chain ratio on a smaller wheel has a lower top speed when compared to the same ratio fit to a larger wheel. But a smaller wheel catches less air and is smaller diameter to overcome. All the resistances stack up
Che???🤷♂️
I believe that there was 1 main guy that designed the torqueflite with the Simpson Gearset design. That is a smart m’fr
We use to put shift kit in our 727. (we as my familly had 5 Dodge Chargers with 440-727 and 1-440 six pack 4speed)
With the instructions, it was not rocket science. It explained well with the carton sheet where to drill bigger passage and change springs with ball bearings in the valve body. I understood back then how complicated the hydrolics and valves body, cerveau, pistons, bands so i never really wanted to mess with that. Its thrue that it needs a good knowledge of the engineering of transmission to play with the dynamics of it. Tony sounds funny when he says; now they have, 5..6..8..10 speed with computers. If he thinks its complicated, i ear him 100%.
Hahaha. Nice content and i get something out of it each time. Thanks to you. Even it its well explained, we still need to practice these skills cause it aint easy as it sounds.
I need to fix my reverse on my Winibago 727.
Good timing. Hehe!
having a manual transmission apart is easier to understand because you can see the forks and rods that physically shift the gears. in an automatic thats all fluid basically and you cant see it.
i love my 904 in my gremlin
Wow, we had to learn how to do every repair procedure from bumper to bumper, at NAVTS in WestNashville, including transmissions, differentials [ front & rear ], manual steering gear, & power steering pumps & gears, engines, brakes, ect. if it was on an automobile, we had to test, remove repair reinstall and re-test 1 of every thing.
Thanks for mentioning Precision Transmissions. It still amazes me the cross over in content that we all watch. 🤣
Cool transmission video.
I managed to make an automatic transmission in a video game called besiege, made a video on it ! Using little grabbers as clutches, routing the power ! Now its not close to real life but using clutches to reroute power to the sun gear and the planetary. Same concept and the process of making one helped me figure out how they worked. Little gifs and diagrams werent doing it for me.
I rebuilt the 727 in my wagoneer. Started it today moved it. I need to retune my carb. I am not sure how to set the manual value pressure on the carb. Seemed like I had to give it more gas in reverse than going forward. I need to go watch the carb tuning video again. I want a trans shield in my wagoneer. Put a shift kit in too.
Had the power wedge fall out of my 98 ram v10 47RE Torqueflight. the internet said to rebuild, I said no im reinstalling the band wedge and adjusting the slop out of the band. I started at 12 noon, didnt finish till 2 oclock in the morning. It worked perfectly. Remember to adjust ur bands from time to time.
The older automatics weren't too bad to work on, the new computerised transmissions I wouldn't want to touch.
The Mystery of the SLUSH BOX...
I HIT THE GAS AND MIRACLES HAPPEN @∅
I could sort out a manual easily enough back in the day but automatics were always a mystery. I get the principal but how anyone figured out how all those channels and tubes and hydraulic fluid work together, well I couldn’t ever make work in my head.
Growing up I always thought witchcraft was complete nonsense, crazy talk.
Then I learned how an automatic transmission operates, I've changed my opinion on witchcraft
The oily rag on the floor looks like my shop manuals.
As a man who grew up in a blue collar family and now spend all of my time working in tech at an office, it's so comforting and cleansing to have UTG on in the background while I push 0s and 1s around. Thank you for this content!
I rebuilt my TH400 last year. This was the first time working on any transmission. There is so much great information out there if you sort through it all. This was one of the items on my rebuild that I considered having done elsewhere. I've had zero problems with mine and am so happy that I took the dive into trying it myself.
transmission shops are folding like alot of shops because the information needed to rebuild them is readily available on the internet. we have people that will rebuild a 4l60e for 675.00 on craigslist and warranty them. the work in transmissions is pulling them and installing them. a 4l60 e can be completely disassembled in less than 5 minutes.. and reassembled in another 5 minutes.,, yes cleaning takes time, mic parts take time, but its not grueling, tedious, or complicated work. also most trans shops take shortcuts and dont actually rebuild them, they fix the "problem" send it out and hope it works for a year.
Having the '66 Ford shop manual is what made it possible for me to rebuild a Ford C4 at home during a college break. That manual explained how everything worked and gave a step by step teardown and rebuild. Listed all the must-replace parts, plus it needed a torque converter and the front pump gear.
Used two shop benches covered with old bedsheets , as parts came off, picked it up, moved it over a foot and continued until the last part was at the far end of the bench. I also put in a shift kit, which was a couple of replacement springs, a valve spool and a template to drill a hole in the plate.
The manual stressed cleanliness, I went through a lot of paper towed and solvent reassembling it. But it worked fine.
UT.....YOU SAID A MOUTHFUL ON THIS TOPIC. THIS AMAZING THINGS ON THESE TRANNYS BACK THEN THERE WAS NO COMPUTER DESIGN, ALL DONE BY SLIDE RULE. THESE UNITS ARE SO MUCH MORE COMPLICATED THEN AN ENGINE. ITS AN AMAZING THING. AS I WAS WATCHING YOUR PREVIOUS VIDEIO ON THIS TOPIC I NOTICED YOUR ATTEMP TO REBUILD THAT UNIT. IM A RETIRED TRANS GUY AND I SAID TO MYSELF OOPS THERE IS SOOOOOO MUCH MORE ON THAT YOUR ATTEMP ON A PARITAL REPAIR . THERE SO MUCH MORE TO THAT QICKIE PATCH UP. TRANNYS ARE THE MOST COMPLICATED MACHINE OF A CAR, ISS A VERY, VERY, VERY TUFF COMPLICATED THING. LOVE YOUR CHANNEL AS ALWAYS.....MOPAR 4 EVER.
Precision Transmission is an excellent YT channel. I think they are in Amarillo Texas.
I'm not a trans guy either, but I'm a cheapskate and will learn to fix anything.
This was helpful. Have to start somewhere. This is a good birds eye start.
The video was impressive. 👍
You're much more than a mechanic. You're an engineer, electrician, welder, body man, sheet metal mechanic, tuner, fabricator and critical thinker to name a few.
How much difference is there between a 727 and a 904?
YES I DID!
If you have a shift kit in the transmission,can you put it back to be stock?
@UTG what is the name of the book you were looking at? I would like to get a copy to look through. Thanks.
Huh, I've never had a torquflite explode on me and trust me, in my youth, I did attempt to do so on many occasions. Best I ever managed was losing reverse on a74 New Yorker w/ a 360 from excessive 10 grand neutral slams.
my 66 327 didn't come with a harmonic balancer should it have one
Got involved w/ dirt roundy round. Powerglides. Ya drill and tap pressure side of pump, same on return. Run hoses to the driver. He puts it in gear, and slowly closes a valve between the two. Band comes on, and, whoopee!
In 1978 I had a 72 Fury Copcar and the tailshaft broke at the governor hole at 120 MPH. The drive shaft dropped down, bent in half, tore the gas tank then shredded the left rear tire on its way out of the car. I didn't die and managed to piece it back together with the back half of a small block 727. Not bad for a broke 17-year-old.
👍🏻 Glad you made it to 61 Larry!
I enjoyed my Plymouth police packs so much then traded the last one in on a K-car. Saved so much on gas it paid for the K! Raised four children through those cars.
The driveshaft broke first taking out the transmission
Tony is that a small block Ford in your shop? What cubic inch is it???
As a transmission builder : this IS A DYING BREED!
Always check your sprag rotation before assembling 😀
Also during disassembly! Don't get it backwards! ;)
Scattered my TH350 on I-10 one day. NO way could I afford a tranny shop. Scavenged around desperately for some random trannies for cheap and bought a TCI overhaul kit and B&M "shift-improver" kit from a now defunct company called PAW--they used to be a big deal back in the early 2000's--and proceeded to shade-tree mechanic that sucker in my dirt floor shed. It took an agonizing amount of effort to keep it all surgically clean and parts organized but I somehow managed it... It was a great experience but not something I plan on doing again.... LOL
I live in a big metropolitan area I went from 10 big trans shops with 3 to 5 people working there to 3 trans shop and only 1 is good. And he will charge from 3000 to 6000 dollars for a stock rebuild. So when my trans when bad I rebuild my self. Ran into a problem and was nice enough and helped me no problem. Thank you Lawrence Transmission.
After you rebuild a few they are not that big a deal. Its just the fear of something new.
The old 3 and 4 speeds are definitely simple,.but can be finicky with mechanical with and what not. A lot of the 6 speed transmissions are simpler and more straight forward than you think. CVT transmissions are the ones we stay away from as it seems once they fail it is really difficult to make them reliable again. The issues we are having is mostly getting parts. 6l80 pumps and bell housings are failing at such a high rate they are difficult to.source for example
On transmissions the zero Gap rings are actually locking rings to keep the Rings tight enough so it can be slipped into the deep bores.
Been running total seal top gapless for years, at this point I wouldn't use anything else.
And they can machine stock rings for gapless,so I use em in pretty much anything,even lawnmowers.
I don't know how well this applies to transmissions, but I have found that understanding a single part of the circuit one at a time makes understanding a system far easier than trying to understand an entire system all at once.
I am also a fan of Richard (Precision Transmission in Amarillo) but he has stopped posting for some time. His forte is GM/Ford/Dodge teardowns mostly. For the more esoteric I would recommend checking out Gary Ferarro's channel (AAA-1 in NY) who does whatever comes in the door (European/American FWD/RWD/AWD etc etc). Richard does performance upgrades, Gary does mainly standard overhauls. Unfortunately, Gary's video quality is pretty poor for these days (not even HD), but the information is still gold.
Two things I just don't get one is automatic transmissions the other is electronics
I'm having an issue with a th400 having no reverse I'm thinking it has something to do with the reverse servo or the band that is applied by it. I have to figure out what's damaged but I don't know where to start. I can buy a pin extension for it but I don't just want to go and do that because the drum could be worn to.
I just rebuilt my 46re in my pickup. 1st time doing this myself. The 46re is essentially a 727 with overdrive. It took more time to clean everything than everything else. A service manual is a must! However I discovered a major mistake in the manual I have and apparently is in several others relating to the overdrive unit. There is a selective spacer that fits into the overdrive piston and the book instructs you to take one measurement and then select the correct spacer per a chart. The problem is the piston and spacer controls two different clutch packs simultaneously. Releasing the direct clutches and applying the overdrive. The book doesn't address the dimension to the overdrive clutches. Found a video by I think precision transmission (I think) and figured it out. Glad I did!
The spacer is for the overdrive direct. The directs are the front clutch behind the pump. The overdrive clearance is obtained by steel / pressure plate combos. Not anything to do with the piston. You're wrong kernel sanders! The bbbbook was right! Tip : if it worked before, put back the stack that was in it. Proof positive.😜
Just rebuilt the 727 in my 1979 D150 a few weeks ago. Guy tried replacing the reverse band with one from a 518. Destroyed the rear drum lol. crazy. 727 was easy to go through and rebuild.
You unlocked a distant memory.
As a young 12yo with my first car, I once walked into a transmission shop.
Place was like a hospital, clean, smelling of chemical cleaner, guys working with white robes and spotless.
And transmissions dissected on top of an operating table.
@P Kudsk some of us break down during winter and need stuff fixed in January when it's -20 outside. If you are a mechanic during winter you should know its part of the job. By all means though, power wash the thing in a heated bay before working on my car. However, i cant garantee that my stuff is gonna be spotless when its -20 outside. Just saying. So i guess you could always refuse icy cars in winter. Im glad for you if you have that luxury. Im sure i wouldn't have that luxury.
@P Kudsk -Ok you’re that guy…
👽
@@michaelgarrow3239 what do you mean im that guy? I cant control when my car breaks down. I dont have a heated garage to let all the ice thaw off of it before hand. Haha its not like i enjoy bringing my vehicle in for service in the first place. I will typically do the work myself if i can. I dont trust others to fix my vehicle. Damn near every mechanic i have had the pleasure of dealing with fixed the original problem but caused another. Or fixed problems that I didnt ask to have fixed because i was going to do it myself. I brought a car in for a mechanical fuel pump, and ended up with a new battery, new brakes and a new serpentine belt and then my dual tank fuel system was hacked up and didnt work anymore. Needless to say i never went back and I didnt pay for any of the labor because i hadnt requested anything else be done. Especially since belts and battery and brakes have nothing to do with the fuel pump.
@P Kudsk 5 minutes of cleaning a day, totals 16+ hours of cleanup a year. Working smart is what the previous guy didn't understand.
@P Kudsk - I’m more concerned about you getting a guy fired because he didn’t feel like cleaning his spot.
And your attitude: which, to put it politely, is as little condescending.
🥱
This reminds me of when I was 18 and knew nothing of engines. Very interesting. Honestly it just makes me appreciate a manual transmission. Big stick move gears
Schooled trans guy in Memphis & winning Mopar racer @ Broadus Automotive
You're right about the mystical. If you really want to experience Dragons and other truly evil entities then take a look at ZF transmissions. Specifically designed to support transmission repair experts.
Turbo retro-encabulator
I try to learn how to do everything even if I’m not good at it as long as it’s good enough to suit me like body and interior I’m going to try and teach myself transmissions
Those new 10 speed Auto's are like those Babushka Dolls that keep splitting apart - Oh there's one drum - there 4 speeds in there, another 3 speeds in that one, 3 speeds in that last one.. dont forget the reverse LOL
I paid a guy to rebuild my transmission. He put the wrong size rings on the main piston so it only went in reverse. So I learned about transmissions and fixed it myself.
I highly recommend the channel Deom's Workshop he does good teardown and rebuild videos.
Automatic transmissions were used in WW2 US tanks & trucks
Indeed, a dying trade. As the old guys die, they take all their knowledge to the grave. I see it happening right now at the machine shop where I work.
Thank you Uncle Tony!
My friend's transmission shop has somewhat morphed into a Land Rover specialty repair shop.
I bet has a monumental amount of work!
@@jonnardjackson2884 There's always tons of them in the lot when I go through there...
We need not mention why! 😂
@@DanEBoyd
I can't find the story as I've looked for it ,but years ago my dad said he saw a story about a guy who won a new Land Rover for getting a golf hole in 1 or sinking a basketball from half court.
They hand him the keys, he drives home and 45mins later it breaks and he has to call a tow truck 🤣
I'd bet your Rover buddy has heard that one.
HOWdy U-T-G,
Thanks for the TORQUE-FLYTE episode
How about the Copper Water PIPE blocking the ACCUMULATOR Valve 'open' ?
Will you use one ?
COOP
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