722.9 4Matic Transmission Teardown

[@oldschool9746]

Thank you Gary, hope you have a great week!

[@jimmyroos1677]

Gary, the B1 clutch basket really sits !!! I use a solid plastic hammer and HAMMER it from the bell -housing side, no marks or dents ...

[@igotaction]

Keep the ZFs and 722s coming Gary!!!!

[@GaryFerraro]

Thanks Joel Will do

[@AbdMehidden]

Good morning Fran hwry l need work WD you lm mknk

[@TheKarabala]

Nice to see you Gary. Take care

[@sabastianrobar1269]

I’m rebuilding my transfer case on my 2015 c300 4matic, 722.9. is there a part number for the hex bolt removed at 16:00 ??? Have everything mostly back together but am having trouble referencing if the bolt I purchased is the same one

[@silver-blz3112]

Do you have a part 2 of this, where you show the problems and put everything together again? Keep going!

[@jimmyroos1677]

I change the allu bolts with the 722-6 transmission bell housing steel bolts, had a couple of oil leaks, after this no more problems.

[@GaryFerraro]

722.6 You change the bolts?

[@jimmyroos1677]

No ,I exchange the aluminum bolts for the steel one's out of the 722-6 box ,u can tighten them properly without them breaking off.

[@SrColon309]

Thanks for sharing your knowledge and experience.

[@jimmyroos1677]

Hallo Gary ,if u could maybe help, I've got a Mitsubishi V4A51 Auto box, it won't shift into 4rth gear ,ie no response to 4rth gear no matter in what position the overdrive button is in .the o/d light does function correctly, the Auto lec said no problem, it's in the box .I fitted a complete different valvebody inc solenoids, no difference, new speed sensors no difference, I've stripped the complete box ,can't see anything wrong. No fault codes, don't know where to from here !!!.

[@christopheredwards3]

Aren't the aluminum bolts replaced.i thought they were one time use.

[@15DJONYX]

I have a p2716 code. I was just driving normally from stop and accelerated it suddenly jerked and dropped gear and went into limp mode. Hard jerking when change/putting into gear drive and reverse. Leading up to the problem i felt the car was hard shifting then suddenly it went away and as fast as it hard shifting went away the failure occurred. I removed the valve body and replaced the solenoid. I didn't see anything weird in the solenoids but I saw slightly larger metal bits (1mm x 2mm) come out from the valve body from what i believe came from one of the ports of the solenoid. Continued with the replacement didn't fix my problem so now I have a new Valve body only on the way and will be transfer the electronics over to the new Valve body. I'm hoping it's a stuck/failed valve/body. What is you professional opinion?

[@GaryFerraro]

What type of car do you have?

[@15DJONYX]

@GaryFerraro 08 CLK 350

[@GaryFerraro]

@@15DJONYX That P2716 code, Is the definition shift solenoid D electrical?

[@15DJONYX]

@@GaryFerraro so you recommend new conductor plates as well?

[@GaryFerraro]

@@15DJONYX Well, if you have the 722.9, The conductor plate is the TCM. The dealer will not sell you one and if you get a new one from someone it will have to be programmed, may be easier to get yours repaired. Do you know anyone that repairs these TCM's?

[@stics412]

Shop says torque converter lock issue or transmission on this same transmission. No codes reported. Would you recommend changing the torque converter. The issue is vibration at stop. All mounts replaced. Thanks

[@GaryFerraro]

does it seem like it wants to stall when coming to a stop? Driving no shudder?

[@stics412]

@@GaryFerraro It stalled once maybe twice had to put in park! Rides smooth but sometimes it jerks. No noise while driving only vibration on brake

[@yolvimazariegos2820]

How do you install the shaft ? The shaft is out he case? The 4 weel shaft ,

[@GaryFerraro]

My installers know how to do that, I do not

[@sukiiish]

What if transmission have plus 1 liter oil. Will be to much presure ? Or will be damaged transmission ?

[@GaryFerraro]

Shouldn't cause to much damage, may shift erratic if solenoids can't exhaust fast enough or may come out of the vent when hot

[@enriquecastro2352]

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?

[@GaryFerraro]

If you check just the drum is it ok

[@enriquecastro2352]

@@GaryFerraro Yes, just check the drum by sending air through the shaft and the drum does not leak. but when I carry out the test through the hole in the box, the drum applies but it is not applied, the air comes out

[@GaryFerraro]

very hard to get a solid air check on the drum, i have an air check tool that i use. Did you air check through the pump support before loading everything into the case@@enriquecastro2352

[@enriquecastro2352]

@@GaryFerraro The K2 loses power through the axis that goes to the converter. Is that normal?

[@GaryFerraro]

it may yes@@enriquecastro2352

[@illyapalamarchuk3525]

Hey so I was doing some donuts on dry asphalt and I heard a loud bang and now no drive or reverse gear what could’ve broken?

[@jacobpoucher]

Lol

[@alexandercleve5316]

part number on the outgoing shaft for the front differential?

[@GaryFerraro]

You mean what the front drive shaft splines into

[@alexandercleve5316]

@@GaryFerraro yes, the one you are replacing in another video, number 19 in Mercedes service documents

[@GaryFerraro]

Not sure there is a part number, not sold separately, i always have to go good used on that. I was talking to another shop once that sourced out a new one that came from poland@@alexandercleve5316

[@richbenzer5926]

Great vid! Thanks for posting these. Can you post a parts list for the rebuild kit please? I have a 2006 ML500 I bought cheap with a trans that works occasionally, slips, doesn't want to engage, I figure it needs a similar rebuild. I redid a conductor plate/TCM on an 04E500 ($900 car, very nice otherwise) that solved that problem but have not torn into the guts on these boxes. Your vids on the 722.9 are awesome!

[@LynxStarAuto]

The inductor plate on a 722.9 is a totally different animal than the 722.6. On the 9 speed the transmission computer is part of the plate. It's a 4 figure part, and locked away behind TRP. TRP is what Mercedes calls Theft Relevant Parts. You need to have a commercial garage keepers insurance policy, as well as be bonded to purchase the part. It will not otherwise be sold over the counter. Finally, the part must be new as a used one cannot be reprogrammed to another vehicle. At least not through official channels. There are "hackers" out there that use black market tools to clone a used module but good luck. They are harder to find than hens' teeth, and in my experience it will work, but the OBD system will have glitches later on.

[@richbenzer5926]

@@LynxStarAuto thanks for the reply. I have actually installed a reprogrammed used CP/TCM in a 722.9 and it works fine so I’m familiar with that process. This other vehicle has lost fluid pressure but the CP/TCM controls work ok, just doesn’t have enough pressure to do transmission stuff. Rebuild time! Your vids are awesome, I really enjoy and appreciate your work.

[@НиколайГринько-ю3ч]

Hi Gary from Belarus. It's a great video again. But I have some problem with ML 350. He had a torque convertor vibration when speed was from 75 to 90 km/h. We rebuilded torque converter, checked all clutch clearences and cleaned VB, new oil and new filter. And after this we have rpm rising when 1-2 shifting and sometimes hard 1-2 shifting. I did VB vacuum test and found that supply pressure regulator valves had 14 Hg instead 18 Hg. Is this a key of my problem? What do you think?

[@GaryFerraro]

to me 14 inches of vacuum is low

[@НиколайГринько-ю3ч]

@@GaryFerraro thank you and what I can to do to rise vacuum?

[@GaryFerraro]

bore may be worn out, I do valvebodies in everyone i rebuild now. I bore is worn out, oversized valve will need to be installed, you can se what Sonnax has for this unit.@@НиколайГринько-ю3ч

[@Innova_1979]

In this scenario; is the point that the transmission shop says I need a new transmission rather than the individual component repairs? Seems like a lot has went south on this 722.9. Being the owner of a non-4-matic 722.9 that occasionally has a jerky shift from 1-2, this has me interested. Please keep the Benz 722.9's coming! Lots to lean here.

[@AbdMehidden]

❤❤❤❤❤

[@AbdMehidden]

Wer you my frand NYS to match

[@AbdMehidden]

Im making

[@pedromfonseca1]

Nice video! Just a quick question. I have a Mercedes GL also with a 722.9 and when doing a transmission service I found copper/bronze filings in the oil pan. Any idea were the filings would be coming from? Thank you in advance

[@GaryFerraro]

I'm thinking converter, was there a lot in the pan?

[@pedromfonseca1]

Yes there was quite a bit. Is this something I should worry about? I did have faults for torque converter lock up. No fault now.

[@GaryFerraro]

@@pedromfonseca1 Converter maybe on the way out if pan had a lot of Debris

[@pedromfonseca1]

Gary thank you again for the quick reply. I sent the torque converter out to inspect and rebuild. They said that there was nothing wrong with it. Looking at your video several times and I just don't see any copper or brass. Could it be inside the transmission oil pump or oil cooler?

[@pedromfonseca1]

Looks like it could be the washers on the planetary gear set.

[@chrispy104k]

Hey Garry, did you ever record a videos of the rebuild of a 722.9?..... or does the viewer assume that the reassembly is just the reversal of the teardown process?

[@GaryFerraro]

I do not have a rebuild on the 722.9 as of right now

[@loganlefley1616]

My transmission suddenly stopped working. Very quiet whining sound when in drive and reverse. Neutral the sounds go away. Park and it makes loud sound like when you engage parking brake or use a ratchet but much louder. Car won’t move at all. 105,000km ?????????

[@GaryFerraro]

So when you put the car in park, it rachets like there is something turning?

[@loganlefley1616]

@@GaryFerraro it makes a ratcheting sound but only for a couple seconds. Sounds more like a hand brake but much louder. Like something tightening

[@GaryFerraro]

Sounds like the output shaft is turning and it's ratcheting going into park , Do you know if the driveshaft is turning@@loganlefley1616

[@loganlefley1616]

@@GaryFerraro I don’t know if the drive shaft is turning. I think it might be free though because I jacked the car up and the car started moving away like it was in neutral

[@RuCuber]

Can you please tell us how much it costed the customer to get this kind of repair done?

[@GaryFerraro]

overhaul the unit or a transfer case repair?

[@RuCuber]

@@GaryFerraro I mean the price of the master kit and the valve body + cost of work done for the transmission

[@GaryFerraro]

@@RuCuber around 5 to 5.5K

[@igotaction]

Doesn't that take the blue 134FE fluid??? Is it that burnt I know you said it looked like it had been worked on.

[@GaryFerraro]

Thats what they say, 7G Tronic Plus. Premium synthetic is good

[@torrencedupree5525]

Can I put a 09 e550 4matic transmission in a 09 s550 4matic

[@GaryFerraro]

cannot say for sure, you would have to check through the vin numbers

[@vardansahakyan9805]

Was looking for an ml 500 m113 engine with this transmission, 2006. Actually it's a good old car with good engine but the transmission seems a big deal breaker. Too unreliable both mechanically and electrically. Don't know if I can trust this one ?

[@GaryFerraro]

i do a lot of these units

[@infocentrousmajac]

you need to invest on a better camera and better illumination. Transmission repair requires not only knowledge but bery fine image detail to show damaged parts. I have learned a lot from your videos but the image quality can be improved. Keep up the good work!

[@AhmedMohamed-hk3io]

Great Job 👌 CGMB can help you a lot Gary for VGS virginize

[@edelindimitrov3922]

What is the torque spec on the long bolt

[@GaryFerraro]

Never really looked that up, i just tighten it down snug and give a little extra and leave like that

[@gokhanuzun1703]

hello how are you i am writing to you from turkey w140 vehicle s320 1996 model gearbox 722.508 vietes transitions a bit hard, especially when switching to 3 and four, what is the problem?

[@ebkonuk]

İlk once resetlemeyi dene.

[@gokhanuzun1703]

@@ebkonuk nasıl yapacağım

[@ebkonuk]

How to reset Mercedes 5gtronic diye arat,bircok video goreceksin konuyla ilgili.Her zaman ise yaramayabilir,bu ilk asama...

[@AbdMehidden]

very good my frand wr you form

[@GaryFerraro]

I live in New York

[@AbdMehidden]

@@GaryFerraro lm from pLstyn

[@marlonredstar-yj2nb]

How do i get you to rebuild my transmission ? Are Get a quote

[@GaryFerraro]

where are you located?

[@marlonredstar-yj2nb]

​@@GaryFerrarobillings Montana

[@GaryFerraro]

@@marlonredstar-yj2nb you have a 722.9?

[@marlonredstar-yj2nb]

Yes, 2012 c300 sport v6 4matic.@@GaryFerraro

[@marlonredstar-yj2nb]

Yes

[@AsifAsif-xk9nt]

Your camera please update we don't see clear

[@basketballjones6782]

@ 2:05 So, basically, you had codes indicating the typical conductor plate issues these transmissions are well-known for, and you decided it would be a good idea to just rebuild the whole transmission. Mmmmkay. Thanks for reaffirming for me why I will never take any vehicle I own to a repair shop but instead do all my own work. Even if I have to buy a bazillion special tools and electronic gadgets to work on a modern car, I'll still end up paying far less and get much better results.

[@GaryFerraro]

The title of the video is slips in 4th, conductor plate will not cause this, internal problem

[@michaelgillette7363]

Brand: Exedy Part Number: A78542 Description: Pump Plate; Fits in Bell Housing Pump Pocket Transmission(s): 722.6, NAG1, 722.9, W5A580, W5A380, W5J400, 722.901, 722.666 Years: 2004 - 2018 $33.61

[@GaryFerraro]

Thats the plate when the bellhousing is damaged correct

[@iamher6422]

So what should one expect to pay for such a job? Good job, though… 😵‍💫

[@GaryFerraro]

on this one it's up there around 5K