Mercedes 722.6 Transmission service and valve body check

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Жыл бұрын

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Mercedes 722.6 Transmission service and valve body check
The transmission I bought about 4 years ago i think. With 170D km on the running gear. So it is good to know if this number makes sense when i open the transmission for a check and little clean up. Also there are some parts that need to be changed out. Like filters and the PLIL parking lock connection.
This transmission has OEM code 722.624 These are normally in E55 AMG NA cars. So this is a transmission from around 1998. Also this transmission has still the torque converter with the drain plug in it. i think this changed around 2000.
I have drained the oil from the torque converter and from the transmission because these where still full level all the time since i had it. The oil does not look that bad. The color is pretty light for this to be the first oil. When removing the oil pan the oil filter is showing 1997 production date. So this the first filter or it can be and long on the shelf item.
The oil pan is not having a magnet. If i remember correct the early gearboxes did not have this. But im going to order this and install it.
PLIL is a part that you should always change if you open the transmission because there is a rubber piece that can break over time. and will give a very big leak. In my case i also remove the parking lock mechanism. Because this part needs to be connected with a cable in the oem cars to the steeringlock and the ignition key. In my w124 this will not work. So i will only have the parking lock from the shifter
Removing the valve body. The conductor plate is removed incl alle the solenoids. The plate looks pretty good. But i have a new one just to be sure. I will keep the old one as a spare. The valve body can be split but make sure you have the big side on the bottom. Because in this part are all the steel and plastic balls that will otherwise drop out.
After removing the the balls, filter, checkvalve and oil out of the valve body parts. I left them overnight to drain out fully. Next day i check all the springs and pistons in the valve body (see pictures below). Everything looks just like it should be.
i also drilled the 3 to 4 flare bigger to 4 mm just like on the ofgear website. This include a little software change will solve the problem
and will make the shift also under full load better then without this modification.
Im going to run a standalone OFGEAR.DK controll unit for the transmission have look on his website
This the valvebody can be assembled again with new filters. Before the conductor plate and solenoids can be mounted again, I checked the solenoids with 12v if the where werking. All are okey. The valve body can be put back in the transmission case and the new filter can be mounted. When i have the magnet for the sump i will mount the pan with a new gasket.
If there are any questions just ask
JMSpeedshop.com
for extra info or a manual from a 722.6 visit the link below
ATSG gearbox manual
www.w124performance.com/docs/m...
Febi biltstein Service kit : 100254
The Torque values. bolts in oil pan, valve body mounting to transmission, vale body splitting bolts M6 bolts . to 8NM
Torque value for Valve body side covers M4 bolts to 4NM
Torque value for connector bolt to 2,5NM

Пікірлер: 125

@bobvancalcar9090 9 ай бұрын

Bedankt dat je de moeite neemt om dit met ons te delen.

@JMSpeedshop 9 ай бұрын

Geen probleem 👌

@r.weaver3769 10 ай бұрын

I use a Beam style Torque wrench (also known as pointer style) for torque values that low. So much easier to control and you can watch as you approach desired torque instead of waiting for the click and hope it's not too much.

@joeinline4443 3 ай бұрын

Thanks vary much I appreciate you a lot sir !!!!!!!!!!!! Valuable information I subbed and liked .your a good man! Thanks!!!!!

@JMSpeedshop 3 ай бұрын

Thanks for the support 👍

@robseignior4389 Жыл бұрын

Another excellent tutorial.

@JMSpeedshop Жыл бұрын

Thanks 👍

@1960livvy 8 ай бұрын

Fantastic Video - Thanks

@LaurentMONFORT 5 ай бұрын

Thank you very much for this video, I am dismantling the plate of my SLK 230 R170 from 1997. I am looking for the filters...Hello from Normandy (France)

@JMSpeedshop 5 ай бұрын

Everything is available from the dealer

@autogatto70 10 ай бұрын

great tutorial and you explained that slipping between 3rd and 4th gear is normal? I have an ML 270, the gearbox goes perfect, no jolts, excellent progression when cold and hot, the only flaw is the 3rd to 4th gear slipping, sometimes it's not much, other times it goes even 500 rpm out before going into 4th gear then everything is ok, knowing the problem is when I change gear, I lift my foot and then accelerate again, new oil and filter, how can I fix it? Thank you

@JMSpeedshop 10 ай бұрын

Normally in car running the oem ecu and tcu. The ecu should cut torque when shifting 3-4 gear. And the slip would be minimal. When have slip like 500rpm is a sight of worn out plates. Or pressure not reaching fast enough or not enough pressure. This will indicate also dirt or worn out parts.

@WillemSitges Ай бұрын

Great video! I can't seem to find the check valve in my 722.6 valve body. Did I loose it or is it possible some versions don't have one? Would you know the part number?

@zubinp Жыл бұрын

Love the videos, 722.6 is a hell of a transmission, when you get time can you do a review on the v12 Bmw 760li (2009-2015 f02 model). Thanks

@JMSpeedshop Жыл бұрын

If i have a car available near me i can have a look

@mikeclinch1141 Ай бұрын

Hi nice video - 1 question can you change the connector at 14:08 without draining the transmission fluid out - I had a look at mine and its not dry so id like to change this connector asap and before I change the transmisson oil? - thanks

@JMSpeedshop Ай бұрын

No you have to drain the oil

@IwillBwaiting Жыл бұрын

Leuk feitje; deze transmissie lag ook in Porsches en Jaguars. Zo goed was (is?) deze transmissie!

@JMSpeedshop Жыл бұрын

Ja zeker ook in Chrysler en jeep. Denk dat dit nog steeds de sterkste en betrouwbaarste automaat is van mercedes

@farerse 10 ай бұрын

what is the weight of this transmission with or without torque converter?

@donroni408 Жыл бұрын

awsome video, would i want to drill that hole to 4mm for my w202 c43 amg and 2000 sl500 if im running stock tcu? or should i upgrade the tcu as well?

@donroni408 Жыл бұрын

also can you send link for the valve body repair kit?

@JMSpeedshop Жыл бұрын

O did not use a valve body repairkit If your run a stock ecu and stock car you should not have a problem for 3/4 gear. This solution only work with the ofgear.dk tcu

@donroni408 Жыл бұрын

@@JMSpeedshop where did you buy the screens?

@JMSpeedshop Жыл бұрын

The filters you mean ? The where in the parts kit incl. Febi 100254. But you can also buy them seperate

@powpow4033 3 ай бұрын

i have this transmission and it seems that the torque convertes is not locking fully in any gear. sometimes in 5th. I replaced the converter and liquid but does the same. maybe a bit better. what else could I check? some orings leacking pressure? some selenoids? Many thanks

@JMSpeedshop 3 ай бұрын

There is a lock up control on the valve body this is activated so if something is stuck it will contant put pressure through and lock it

@powpow4033 3 ай бұрын

how is that lockup working? Electronically or mechanically activated? can that be checked with the box on the car and only the valvebody removed? do you know any seal kit to replace once the valvebody is off? @@JMSpeedshop

@JMSpeedshop 3 ай бұрын

Search for ATSG. 722.6. Service manual

@lcdsmarin Жыл бұрын

I open my it's exactly the same, but the only thing I found was that the plastic on the speed sensor it's cracked, will this afect performance? My car it's dosen't change from first gear. Any thoughts? Thanks for the video

@JMSpeedshop Жыл бұрын

yes can be there are 2 speed sensor on the conductor plate. if there is a crack this is not a good sign.

@inmoneywetrust3292 Жыл бұрын

Nice video thanks! Hey i have exact same transmission I just did the conductor plate only and noticed I missing those yellow plastic covers on top of solenoids, how important are those? Previous owner must have taking them off. Thanks

@JMSpeedshop Жыл бұрын

On early transmission these yellow cover where not on yet. The came later exact year i dont know. I had a 1996 722.6 in my w201 V12. This transmission had also no covers on the solenoids

@inmoneywetrust3292 Жыл бұрын

@JMSpeedshop ! thanks for the reply, mine is 2006 e55 amg and it has the blue upgraded solenoids so that's goog I guess.

@JMSpeedshop Жыл бұрын

At 2006 the sure must have the caps from factory

@frontlinemedia4270 Жыл бұрын

So. If you have this transmission and it doesn't want to shift out of gears when driving, where is the problem? Conductor Plate? What tells the transmission to shift?

@JMSpeedshop Жыл бұрын

The tcu tells when to shift. The signal will go to the solenoids. So if the tcu does it work correct. The problem.is most.of the time in the conductor plate and valve body

@Skul-Ski 4 ай бұрын

I just did an engine and trans swap from another vehicle and apparently did not test drive the donor car with enough "spirit". When driving gently everything works as it should, but if I put the hammer down I get the following • I have issues. 1-2 shift will slam (not even sure if the slam is a shift because I instantly lifted and so it of course upshifts due to letting off the throttle and being at a higher speed. • 2-3 shift flashes RPM a bit • 3-4 shift flashes RPM a lot • 4-5 shift flashes RPM a lot • Downshift kickdown flashes RPM as well • Once in gear trans holds with no slipping at all even under heavy acceleration at low RPM up steep hills, so definitely no slipping once into gear I replaced the valve body (as well as all the solenoids) with another used one (don’t know the history) and put a brand new conductor plate on it as well as brand new filter and conductor plate connector. Also swapped out TCU from donor car. No change - symptoms stayed virtually the same. I am not crazy about what the color of the original fluid was. There was a bit of a black film lining the bottom of the pan. Any ideas? This is in a 1999 W210 E300TD and has a stage 2 tune and HX35 turbo with 3" exhaust so the power is much higher than original.

@JMSpeedshop 4 ай бұрын

A original 300td box with your set up van not handle your modifications so i would change the gearbox for a BIG NAG box. That is a 580 box. Your now have a 330 box. Also with the oem tcu with you setup this is not ideal better you use a good tcu tune or go with a ofgear.dk tcu The problems your having i would start opening the valve body and checking the springs a valves in there look if everything is clean a nothing broken

@Skul-Ski 4 ай бұрын

Pretty confident it is not the valve body, even though I was convinced it was due to the symptoms. I replaced the valve body with a completely different one (but with a brand new conductor plate on it) and the symptoms were identical. No change at all. Seems much too coincidental to have all the exact same issues with every single gear change. Making me think it might be the pump??? The motor I pulled (because of a pre-chamber failure) had the exact same tune on it and the trans connected to that motor performed just fine. Wish I would have swapped my old existing trans onto this motor during the swap but I just assumed this one would be better because it had half the miles. 330 should be sufficient for this existing tune. Motor I pulled and now have on a stand will be getting the full treatment and will have much more power so it will need more gearbox. So, I will plan to go a different route then, but not sure I want to consider the ofgear. I have read many posts of people being much less than happy with that controller. That will probably take me down the road of doing a manual swap.@@JMSpeedshop

@thaswhatiknow4204 6 ай бұрын

I was told about an anti theft issue with the conductor plate and valve body.. does this come in to play when doing this?

@JMSpeedshop 6 ай бұрын

Yes. if you mean that i remove the plil lock

@miliantza211 Жыл бұрын

Hi Should i change the tcc solenoid and 1,2-3.5 gear solenoid? I am experiencing some jerk in 1-2 shift and low rpm between changing gears … car feels like no power. W204 c200 kompressor

@gbengarichard437 Жыл бұрын

I have same issues but if it manages to change to 3 it's a smooth change till the last gear what was the issue with urs

@whlawson5812 4 ай бұрын

Your compressor is ok?. I bought a dashboard mounted OBD2 Lufi XF. Can display MAF vs MAP vs throttle body position vs RPM and many more parameters. At 3000rpm and nearly at 0psi for MAP the MAF reads at 40 to 42g second. At +7.5psi@3000 rpm MAF can reads up to 60g/second. Positive pressure read out by MAP is useful to know that bypass flap for supercharger is closing or is in fully closed mode. By MAF on very hard flooring of gas pedal can bring up MAP to +8.5psi. This I had to do occasionally to quickly merging into freeway traffic. At hot idling in D mode & AC off the MAP is at -7.3psi vs MAF 4.7g/g at 740rpm. Any leak in the vacuum hoses can drop the MAF value & at the same time causing rough idling. 😂😂😂

@haorangeng4230 Жыл бұрын

Hi, thank you for the video, i got a question on my transmission (2011 jeep grand cherokee), i found a Shift Lever Shaft seal leakage, and if i am right, the only way to remove the seal is disassemble the gearshift detent and shift lever shaft, and take the seal out. and i need to loose the gearshift detent from the shift lever shaft first, and take the shaft out, finally take out the seal. Does my idea make sense? and do I need the special socket like some other videos show that screw the socket inside the seal, then pull it out?

@JMSpeedshop Жыл бұрын

If we talk about the same seal. Then you can not change it under the car i think because the shaft is to long . About a special tool. I rarely use special tools there is always a way to do it with tools you already have. Here is a look from a Benz forum. I personally never change out this seal so i can not go in to details www.benzworld.org/threads/how-to-lower-722-6-transmission-a-few-inches-and-replace-leaking-shifter-seal-without-removing-transmission.3060057/

@haorangeng4230 Жыл бұрын

@@JMSpeedshop ah, that is a really good point, I realiezd the constrained space, but i didn't realize it is not enough to remove the shaft. thank you so much

@JMSpeedshop Жыл бұрын

This is what i found online that there is not enough space

@haorangeng4230 Жыл бұрын

@@JMSpeedshop thank you, i ll check it, it seems i have more space then the Mercedez, but I am not sure it is enough or not on my Grand cherokee.

@JMSpeedshop Жыл бұрын

Oke. Good luck 👍

@LaurentMONFORT 5 ай бұрын

HELLO JMSpeedshop! what do you think some SONNAX Kit??? TY

@JMSpeedshop 5 ай бұрын

Never used it. Sorry

@akkk5517 Жыл бұрын

Man i saw the video and thanks a lot I do have a question 3rd gear and 4rth is slipping so the hole is the solution how can u help me cuz mechanics are asking about 1000 so thats why imma do this myself

@JMSpeedshop Жыл бұрын

This solution will work best of you run a ofgear TCU

@akkk5517 10 ай бұрын

@@JMSpeedshopno mine is stock i dont know what should i do it is slipping i spent alot and kinda broke rn

@JMSpeedshop 10 ай бұрын

If the clothes are slipping the plates are worn out. Or there is not enough ook pressure on the plates. This can be a lot of issues. Like blocked lines. Or not enough oil or broken valves in the valve body .

@MrMsD77 Жыл бұрын

Ottimo video complimenti 👍 ti devo fare una domanda ho una Mercedes classe w202 250 TD ho cambiato elettronica ho fatto il tagliando olio filtro perché non cambiava le marce adesso dopo un anno mi dà problemi quando si riscalda avvolte cambia le marce fino alla quarte marcia e non va piu alla quinta poi in salita non va più il meccanico mi dice che il convertitore di coppia possibile togliere convertitore di coppia sesa scaricare l'olio voglio cambiare il convertitore ti ringrazio se mi rispondi 👋

@bobvancalcar9090 9 ай бұрын

Hi Johan. Ik mis het gedeelte waar je de grote connector demonteert. Niet moeilijk maar wel handig als je 't een keer gezien hebt.

@JMSpeedshop 9 ай бұрын

Oke. Ja zal het volgende de keer meenemen 👍

@musical9745 4 ай бұрын

Please, where can I get that manual hardcopy for a 722.9 7G-tronic Mercedes benz. Car is moving despite no transmission fault codes

@JMSpeedshop 4 ай бұрын

The are online do some google search

@JMSpeedshop 4 ай бұрын

Google atsg 722.9

@musical9745 4 ай бұрын

@JMSpeedshop thank you for your response, Here is the main problem, On the diagnosis, under the Automatic Transmission Unit, it says No Fault Codes. Which could mean transmission has no problem. But the car isn't moving. It shows the selection on the instrument cluster on the dashboard, but the car is hardly moving, and if it moves very slow as if it's rather rolling.

@JMSpeedshop 4 ай бұрын

Oke. Personally i dont have experience with the 722.9

@cancerealtm623 28 күн бұрын

U said drill bigger hole to 3-4.th gear on mechatronik plate, where and why d u want to drill it to be bigger?

@cancerealtm623 28 күн бұрын

if u run on original ecu, with bigger hole, what will be happen?

@JMSpeedshop 28 күн бұрын

When running on ofgear ecu this will give more oil pressure on 3-4 flare. So only do this when running the ofgear tcu. Not sure what will happen when running stock tcu

@coucouj2781 10 ай бұрын

Sir how can get a jold of you. I'm struggling with a p2767 code. I changed the conductor plate, but still same code. Grand Cherokee diesel 2008, 270k km. I haven't open the valve body. What else should I look at. Some are telling me that the new conductor plate is a bad one... amazon.

@JMSpeedshop 10 ай бұрын

P2767 is the speedsignal. Did you also changed the connector socket holder in the gearbox where the plug is going in. And the old one was it wet of oil. If it was wet . Check the connector on the transmission tcu. If it is also wet here it is possible that oil came in the tcu and can also cause problems. But you have to buy oem conductor plate or. The febi biltstein plate. Febi biltstein is the same as oem. This is what i use

@coucouj2781 10 ай бұрын

Thank you sir. I did buy a complete assy. including connector gasket and filter... all from amazon. On starmobile speed sensor always read 8000rpm when vehicule is not moving.

@JMSpeedshop 10 ай бұрын

Oke. What is it reading when the plug is disconnected .

@coucouj2781 8 ай бұрын

I just saw your answer ... I currently have the tcm in hand... very complicated to access on jeep crd. Had to remove steering colum. Tcm looks dry from the outside. Do I have to open tcm to check?

@JMSpeedshop 8 ай бұрын

Google or KZfaq tcm oil problems and you find more info about this and also how people find it out. But if the connector on the tcm is dry then you should not have this problem

@joetrojan2568 Жыл бұрын

OG 722.6 conductor plates have bare copper traces.

@JMSpeedshop Жыл бұрын

yes some of them . early years where more bare the the later models

@whlawson5812 4 ай бұрын

In March year 2025 will be auto oil change out for my MB722.6 transmission as previous owner had change it in year 2020. Oil from dipstick is still looking pink in color when blotting onto a white paper. No issue so far by this transmssion but it will soon be a 18 years old transmission. Since I had intended to keep the car for another 5 years I think it is best to plan to change out the conductor plate and maybe put in sonnax valves. This car had never did any sort of towing. 😂😂😂

@blackbillionaire1302 Ай бұрын

i have the same thing gearbox , cant drive, when it put into D mood .

@farerse Жыл бұрын

nice upload! btw does Muter mean nut in dutch? :)

@kraut-performance Жыл бұрын

Yes. In German Mutter=mom. In Holland similar. 😉

@farerse Жыл бұрын

@@kraut-performance ok in scandinavian countries mutter means NUT .. it would be fitting name for a mechanic.. :)

@JMSpeedshop Жыл бұрын

Muter. It is with 1 T. But mom is Holland moeder. 😃

@JMSpeedshop Жыл бұрын

😎

@JMSpeedshop Жыл бұрын

But Muter itself has no real explanation in Dutch not that i know of

@hkn496 Жыл бұрын

Has this gearbox been used on a slr?

@IwillBwaiting Жыл бұрын

1:09 Comes from a w210 E55.

@JMSpeedshop Жыл бұрын

Yes. But a 722.6 is been used in a slr

@vya9852 Жыл бұрын

How did you remove dip stick tube ?

@JMSpeedshop Жыл бұрын

Just pull it out .

@williamb454 Жыл бұрын

Mine is sealed

@LaurentMONFORT 5 ай бұрын

I don't have the solenoid covers, it's crazy right???

@cancerealtm623 28 күн бұрын

the time will broke it, so it is not crazy

@JMSpeedshop 28 күн бұрын

That depends on the manufacturing year. Early models dont have coers

@BN20O9 Жыл бұрын

I wasn't so lucky I disassembled my valve body to find chunks of roller bearings and ferrous material in the pan and stuck on the yellow magnet body of the conductor plate

@JMSpeedshop Жыл бұрын

That is not amg of beginning

@BN20O9 Жыл бұрын

@@JMSpeedshop what would turn trans fluid grey after 155k mi?

@JMSpeedshop Жыл бұрын

Clutch material

@narcissistinjurygiver2932 Жыл бұрын

did you checkc out the Gearwrench xp120 ratchets?

@JMSpeedshop Жыл бұрын

Yes . Just online. Quality looks good

@narcissistinjurygiver2932 Жыл бұрын

@@JMSpeedshop they are awesome in tight spaces. they are like surgical tools. they are so good in places where there is no room.. smooth as silk. if you do not mind spending some money i think you will fall in love with them.

@JMSpeedshop Жыл бұрын

I will keep it in mind . Thanks

@blixtkrig 2 күн бұрын

What oil do u run whit 234.14 or thicker?

@JMSpeedshop 2 күн бұрын

MB 236.14. Dextron VI

@blixtkrig 2 күн бұрын

@@JMSpeedshop i just changed oil in my 320cdi 722.6 and i imagen that the gearbox slips more now than before .good service history on the car i just bought it .i have factory reset the gearbox and use Fuchs Titan R134 ATF oil.

@JMSpeedshop 2 күн бұрын

@blixtkrig oke. Yes sometimes only changing oil and filter is not enough

@JMSpeedshop 2 күн бұрын

@blixtkrig i also always check the valve body

@blixtkrig 2 күн бұрын

@@JMSpeedshop it worked perfect before oil chainge..but could it be thinner oil now than previus owner had in it...air in system?

@narcissistinjurygiver2932 Жыл бұрын

those conductor plates are cheap. I had to do one last year. I bought an extra one in case.

@JMSpeedshop Жыл бұрын

Yes that is why i changed it but the old one does not look to bad

@Leonardo555ZZZ Жыл бұрын

@@JMSpeedshop Speed sensors can fail even at low klm. but after 17 years or so. Good to fit a new one while you are in there.