Hi Tasos, awesome videos - all of them. I am trying to replace the transfer case bearings in my 722.9 4 Marco (2011 year with 160k km). I have figured out how to take everything apart and reassembling it - thanks to your videos. What I have no information on is how to shim or preload the bearing races to ensure there is no play between the output shafts... Mercedes will not offer advice and nobody knows anything on any forum. I am happy to pay for your advice....
yes, great advice! I saw the MB video about that then thought... a magnet only picks up iron not brass or aluminium. Transmission Doctor is a specialty of its own! The only thing I can do is drive it easy with shifting and replace ATF
Great video! Thanks for going through everything, made it seem it wasn't as hard as i expected, can you do one for the 722.6 by any chance, i own a CL55 AMG and would like to see how you explain everything like this video! Keep up the great work
Thank you for taking the time to make such an informative video on the 722.9 The early 2009 modle with the start off clutch has a tendency to grab fast when cold and cause a jolt. Have you seen this problem? Thanks Tasos
excellent video again.....what is your main recommendation for standard service for this transmission. Mercedes USA says every 40000 miles.. also what specifically how does the weistec clutches differ from MB version THATS IT......CUT.....CLASSIC
Hello, thanks to your video I have cleaned my block + plate + solenoid valves. Thank you. On the other hand, I have a doubt. It was not so easy to put the whole thing back on the car. When I installed the set on the car I paid attention to the large electrical outlet & was able to finish but I did not pay attention to the plastic B3 tube. I inserted this tube correctly & perpendicularly to its place in the block (I did not mount this tube on the gearbox) solenoid valves. So when reassembling the assembly this tube was on the assembly that I was holding in my hands. From what I understand this tube is only used to tighten the clutch in first & seventh gear. I have been driving since Sunday I haven't noticed anything in particular. If I succeeded in assembling the whole, that is to say that the plug came out well & that I was able to correctly tighten the 9 screws of the block, is it possible that this B3 tube was not mounted correctly? If this tube would have been badly mounted can we understand it without disassembly in relation to the reactions of the car?
very good video. I have a question, I have been working with a 722.9 gearbox for more than 1 month, I changed all the clutch discs with an international pressure master kit, everything new, the orings and rings are also new. I have a leak in the K2, the K2 clutch engages but loses pressure. Perform the test with air using the test holes indicated in the manual. Has it happened to anyone?
Thanks for advice but i want ask for my problem it is happening to me i hear noise and vibration just on second gear, can you explain where is problem ?
Thank you so much for this. If you have time can you do a video on the 722.6? I have m113k to put in my c55 and i want to rebuild the transmission. Thank you in advance.
Apa yang Anda ganti bila kejadian slip sepeti tersebut. Saya punya masalah perpindahan gear no 3 ke no 4 slip. Apa yang harus di ganti. Terimakasih bro
Hello I am troubbleshooting my 722.9 // I found this piece of information in a forum but the image of the port layout wasn't accessible. "If you have the valve body out you can air pressure test the K1 by putting air to the hole in the trans case for K1" do you know how I could complete this test or have a picture of the port layout?
I've got a 2015 C400 4Matic, with 722.9 and tuned by a well known local guy, took it in physically. He claims +90HP & +100TQ, but I know it's rough on trans & felt it slip once. I'm going to do weistec upgrade eventually, only have 60K miles thus far. Also, common complaint is sticking downshift 1 solenoid, any issues/replacements from dealing with these?
My 7 speed MCT out of my 2012 E63 has a small RPM flare when I apply throttle lightly. If applied firmly and quickly no flare, just instant pull. I’ve been advised it’s the Valve body, can this be possible ?
Me too. New transmission fluid and new transmission mount helped alot. Im thinking another fluid change will make it better. But was kinda bad only 68k miles but probably original fluid
@@OGYELLOW when it’s cold and the first gas u give the car jumps right? All u see it’s the RPM jumping all over the place?? Bc if so that’s the same issue I have as well. From what I heard a tune Fixes that OR try cleaning your crankcase breather valve. Someone on the forums said that work… there’s other that said it doesn’t jump either when u start from Sport mode.
@Parsa Salmasy no, mine does not do that. Only slight slip from 2-3 but rpm does not surge which make me think mine is somewhat ok/normal. I dont think tune gonna help you. You might need conductor plate/vgs update
I am rebuilding a 722.6 for a S55 amg. I'm thinking of removing the cushion plates in order to get firmer shifts also trying to add extra frictions. What do you think?
Probly too late on this reply but don't do it. More frictions don't do that much but will generate lots of extra heat. Line pressure is what primarily controls engagements.
What was the point of this video? You didn't even mention opening and resealing all the servos. The clutches don't go bad unless there is an issue with the apply pressure caused by leaking servos or a fault with the valve body. The biggest issues with the 722.9 are the speed sensors and wear in the planetaries. There is rarely a need to replace clutches unless there is catastrophic damage.
Master of his art thanking you for this insight.
Hi Tasos, awesome videos - all of them. I am trying to replace the transfer case bearings in my 722.9 4 Marco (2011 year with 160k km). I have figured out how to take everything apart and reassembling it - thanks to your videos. What I have no information on is how to shim or preload the bearing races to ensure there is no play between the output shafts... Mercedes will not offer advice and nobody knows anything on any forum. I am happy to pay for your advice....
Very interested in this as well.
So happy I found this video. Lot's of very good advice and how to do things. Thank you Tasos.
This makes the magic box seem so simple. I love it!
Simple to assemble anyway, the designers are still magicians to me, hahaha.
I enjoy watching an artist at work.
"Efa-disto" maestro.
Really nice tour inside the 7 gears brings respect for the work of the clutches 👍🏻
This is really neat. Thanks for sharing all that.
Also it is good to clean solenoids with fresh ATF oil and use magnet to clean the mesh from metal particules inside.
yes, great advice!
I saw the MB video about that then thought... a magnet only picks up iron not brass or aluminium.
Transmission Doctor is a specialty of its own!
The only thing I can do is drive it easy with shifting and replace ATF
@@glasser2819 of course it wont pick up brass and aluminum but what else can you do? Then the only solution is to buy new ones.
Simple, so simple I wish I had your skill and knowledge oh and bottle to take it apart!
I can teach you
Loys of love for you man. You're great!
Awesome explanation! Thanks for the great tips and tricks.
Great video! Thanks for going through everything, made it seem it wasn't as hard as i expected, can you do one for the 722.6 by any chance, i own a CL55 AMG and would like to see how you explain everything like this video! Keep up the great work
Great channel very informative, great to know before things happen
Thank you, sir! Good info!
Thank you for taking the time to make such an informative video on the 722.9 The early 2009 modle with the start off clutch has a tendency to grab fast when cold and cause a jolt. Have you seen this problem? Thanks Tasos
🙏🙏🙏👍👍👍
Great video. Thanks for sharing.
Awesome thank you!
Good expreince and good talent
u are wonderful , u are master of AMG
excellent video again.....what is your main recommendation for standard service for this transmission. Mercedes USA says every 40000 miles..
also what specifically how does the weistec clutches differ from MB version
THATS IT......CUT.....CLASSIC
+Faiz Rahman 40,000 miles if you are using mostly the car in the city and 60,000 miles on highway
Super Video.
Hello, thanks to your video I have cleaned my block + plate + solenoid valves.
Thank you.
On the other hand, I have a doubt.
It was not so easy to put the whole thing back on the car.
When I installed the set on the car I paid attention to the large electrical outlet & was able to finish but I did not pay attention to the plastic B3 tube.
I inserted this tube correctly & perpendicularly to its place in the block (I did not mount this tube on the gearbox) solenoid valves.
So when reassembling the assembly this tube was on the assembly that I was holding in my hands.
From what I understand this tube is only used to tighten the clutch in first & seventh gear.
I have been driving since Sunday I haven't noticed anything in particular.
If I succeeded in assembling the whole, that is to say that the plug came out well & that I was able to correctly tighten the 9 screws of the block, is it possible that this B3 tube was not mounted correctly?
If this tube would have been badly mounted can we understand it without disassembly in relation to the reactions of the car?
Brilliant video, where are you based mate
excellent useful video thanks a lot
Thank u very good video
thanks you brother i learn lot of thinks
Badabing badaboom easy as sunday morning
Great videos Tasos.
Quick question do these gearboxes have just the single oil cooler or do they have a water cooler also?
Excellent video cheers👍
very good video. I have a question, I have been working with a 722.9 gearbox for more than 1 month, I changed all the clutch discs with an international pressure master kit, everything new, the orings and rings are also new. I have a leak in the K2, the K2 clutch engages but loses pressure. Perform the test with air using the test holes indicated in the manual. Has it happened to anyone?
Thanks for advice but i want ask for my problem it is happening to me i hear noise and vibration just on second gear, can you explain where is problem ?
Thank you so much for this. If you have time can you do a video on the 722.6? I have m113k to put in my c55 and i want to rebuild the transmission. Thank you in advance.
+Modified 504 www.newco-autoline.de/index.php?searchtype=transnr&se_transmission=722.6&fullscreen=1&st_filter_location=2771&lang=0
Thank you very much. What would you recommend for a performance build?
Where did you buy the kit for the 722.9 at...please let me know
I’m having a issue with my transmission it won’t shift out of first gear I replaced the conductor plate with a new one
What about the transfer-case can you make a video for that ? We all no 4matic transfer-case are gone after around 60000 miles
Apa yang Anda ganti bila kejadian slip sepeti tersebut.
Saya punya masalah perpindahan gear no 3 ke no 4 slip. Apa yang harus di ganti.
Terimakasih bro
Which a good source to buy the rebuild master kit for this gear box
Raybestos
Hello I am troubbleshooting my 722.9 // I found this piece of information in a forum but the image of the port layout wasn't accessible. "If you have the valve body out you can air pressure test the K1 by putting air to the hole in the trans case for K1" do you know how I could complete this test or have a picture of the port layout?
I've got a 2015 C400 4Matic, with 722.9 and tuned by a well known local guy, took it in physically. He claims +90HP & +100TQ, but I know it's rough on trans & felt it slip once. I'm going to do weistec upgrade eventually, only have 60K miles thus far. Also, common complaint is sticking downshift 1 solenoid, any issues/replacements from dealing with these?
What would be the weistec clutch part # ??? I called Weistec and they said that they don't carry an appropriate part fitment.
Whats the mileage on this transmission?
My 7 speed MCT out of my 2012 E63 has a small RPM flare when I apply throttle lightly. If applied firmly and quickly no flare, just instant pull.
I’ve been advised it’s the Valve body, can this be possible ?
722.9. Rough changing from 2nd to 3rd. What can be?
Me too. New transmission fluid and new transmission mount helped alot. Im thinking another fluid change will make it better. But was kinda bad only 68k miles but probably original fluid
@@OGYELLOW did it solve ur issue? I have a CLS63 RWD and it’s slipping from second to third…
Any feedback is much appreciated
@Parsa Salmasy absolutely not lmao. If anything its worse but only when cold. When its warmed up it shifts fine. Ive come to think its semi normal
@@OGYELLOW when it’s cold and the first gas u give the car jumps right? All u see it’s the RPM jumping all over the place??
Bc if so that’s the same issue I have as well. From what I heard a tune Fixes that OR try cleaning your crankcase breather valve. Someone on the forums said that work… there’s other that said it doesn’t jump either when u start from Sport mode.
@Parsa Salmasy no, mine does not do that. Only slight slip from 2-3 but rpm does not surge which make me think mine is somewhat ok/normal. I dont think tune gonna help you. You might need conductor plate/vgs update
Taso, any recommendation on safest tune for m278 if any
You guys are funny :)
Thanks good video
+C63 AMG it's from the petrol fumes 😄
I am rebuilding a 722.6 for a S55 amg. I'm thinking of removing the cushion plates in order to get firmer shifts also trying to add extra frictions. What do you think?
Probly too late on this reply but don't do it. More frictions don't do that much but will generate lots of extra heat. Line pressure is what primarily controls engagements.
How much is to rebuild a transmission after losing 3rd gear?
From your experience which transmission is more reliable ? 722.6 or 722.9 ?
CarGuy TV 6
Hi sir
Do you ever use amsoil fluid?
For engines and diff yes but not for the transmission
can the valve body be transferred to another transmission or should a new one be bought and programmed?
Kaos Ben-Zeno hi, yes you can transfer the valve body.
Tasos Moschatos is the anything special i need to be a where of?
KillaBaine just make sure that you are transferring the unit to the same transmission like yours, that's it!
Tasos Moschatos thanks.... this transmission situation i am having is a nightmare
Kaos Ben-Zeno btw....my car is a 2012 S550 4matic with gen3 transmission
Do you have a greek accent?
PaulB hi, I'm from Greece, so yes I have a Greek accent I guess.
@@TasosMoschatos to me it sounds like Optimus Prime fixing all AMG’s :-)
@@TasosMoschatos
You should have told him you were French 🤣
What was the point of this video? You didn't even mention opening and resealing all the servos. The clutches don't go bad unless there is an issue with the apply pressure caused by leaking servos or a fault with the valve body. The biggest issues with the 722.9 are the speed sensors and wear in the planetaries. There is rarely a need to replace clutches unless there is catastrophic damage.