Mercedes 722.4 Valvebody Overhaul & Tips
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- čas přidán 29. 08. 2024
- In this video, I split apart an early Mercedes valvebody, I show small parts locations in the valvebody and case. At the end of the video I air check the transmission with my air test plate. Thanks for watching
You weren't kidding about this being a very busy valve body Gary! I can hardly imagine a 1994 Mercedes in the northeast worth doing this much work to! But I'm glad it found its way to your shop for a video Gary, excellent work.
Thanks Luke, I actually do quite a few of these
Thanks Gary! Lots of tips and tidbits on this one. I can't understand why more people don't subscribe to the channel.
Bill
I would come and work for you as an apprentice but I live thousands of miles away :( I have a 722.429 LHD gearbox. Utterly great video. Keep safe and keep healthy.
It always amazes me how clean you get your hard parts!
Thanks, got a very big dish washer lol
Thank you, for The class.
Thank you for The class.
Excellent Video ! I am diagnosing an issue with my 1992 300D and this helps explain a lot. Mine is staying in 4th gear so it accelerates very slowly with no kickdown function. If I shift manually I have no slipping and it shifts up and down smooth. I have been told I may have stuck governor weights so I am going to dive into it and see what I find.
Check the cable to make sure that is free and the cable moves free
Thank you for your video, at least you give me an idea how to fix my transmission of my S500 1994 which I have to go step by step which I had seen on your video.
You sure know your job Gary, you make some very in depth vids. I used to live in NY {Long Island] and for the winter i had a 1996 Grand Cherokee 5.2. When at the Mopar dealer for filter, fluid and gasket i was talking with the parts guy and he mentioned the fluid for the new [then] 8 speed is about $50.00 a quart and also that some transmissions have the filters integrated into the pan so its replaced as a unit==$$$$. Sometimes i wonder if now things are over thought especially for the long run just to get maybe .5-1 mpg increase?
Long term durability and service costs mean a lot too not just the fact that when new its a bit more fuel efficient. A few years ago my Jeep trans. was hanging up while up shifting, i replaced a few solenoids and its still 100% with 152,000 miles, i live in NC now so it just sits here.
I have a 2019 Hyundai Elantra and its a 6 speed MANUAL, in my opinion i feel they're more reliable long term and its very easy to drive, i am far from a CVT fan
Where in Long Island, my shop is in West Hempstead and I grew up in Massapequa.
We used to service transmissions for 100 to 150, with these new ones a service is now 650.
I have done couple dozen 8 speeds already, training now to learn 10 speeds
@@GaryFerraro Oh, small world that's for sure. I grew up in Rocky Point [Suffolk County] then later i lived in Mastic area and Holtsville, I used to love Port Jefferson in the summer. Hempstead is Nassau County, i bought my 2003 Accent from a dealer in Hempstead. I bought my transfer case from TCU, he is near you. George is the transfer case guru like you with automatics, he gave me a great price with installation, been in there 10 years and still 100%
The only 10 speed i know of would be for the ZL-1 Camaro but i really don't follow closely, it does give awesome performance thats for sure, considering the ZL-1 has 650 hp stock it needs to be pretty robust to handle that power and i am sure fun/abuse
@@zxtenn Wow, I used to spend my summer weekends in the Hamptons and shelter Island. I know George very well, I purchase all my T-cases from him, we speak all the time. I'm 2 minutes from the Dealers in Hempstead, i'm sure you went right by my shop a few times. Great to meet you.
@@GaryFerraro Cool, nice to meet you as well. When i lived there i did some weekend recreational cycling and used to ride the 75 mile route at the annual Tour of the Hamptons, also rode that area on the weekends, great scenery and only 40 minute drive from Mastic, I would park my car at King Kullen parking lot then ride.
Amazing you know George, he has a good name in the Jeep/4 WD community. When he installed my TC i think he had an issue with his CC and he never mentioned bring cash so he trusted me for $1050.00 to leave without paying, i used paypal when i got home. Back then he had a hip replacement done but still came in on a weekend to get it done. $200.00 bucks labor for an hours work to install was a good deal for him but like i said been 10 years and no issues, i do change the fluid every 6 months to a year for maintenance so i keep on top of it. He told me he worked for Spicer so sure knows his business, also his TC price was VERY reasonable. It was $850.00 for the TC and 200.00 to install
I am going to ride a few trails now so enjoy the rest of the day
@@zxtenn Thanks you to, they just opened outdoor dining so it burgers and beer for me. lol
I did indeed get a genuine valve body gasket kit. Nuisance to find, and had to be special ordered from Germany, but gotta do what Gary recommends. Jesus, $100 for that little shit, just like he said. I also did the restoration of the K1 & 2 drums, with the drilling out of the rivets and re-tapping and all that.
Thanks for watching, that little kit can make a big difference on how that trans works
I get genuine Benz parts as often as I can get away with it.
hello i have a w210 e200 m111 136 hp with the 722.4 transmission , the car was sitting for around 3 years because of a no reverse issue ( with no oil in the trans ), i bought the car fix the reverse and after driving for some time i notice that the car is verry slow to accelerate from a standing position , the shifts are very quick it dose not stay in gear very long and the 4 gear is sliping like crazy sometimes it feels like neutral , after some time the 3 gear started to slip to , but if you dive for some time the transmission start to work ,,good,, it dose not slip ( at least i cant fel it slip ) and there is no downshifting only if I do it manually . Now when i replaced the broken reverse piston and pump assembly (front pump + B3 piston) from a donor trans i checked the K1 friction plates and the plates where like brand new so i don't think the trans is bad .
And the oil after just a few km around 400 it’s looking pretty dirty like a purple instead of red , I do have a spare valve body and a trans pressure modulator (the green one)
is it possible that the problem is from here? or i'm looking at a new transmission ?
In the Auxiliary section of the valvebody there are govenor screens, these screens normally clog causing shifting issues, you have to take the valvebody down and the valvebody plate, take the plate off the aux valvebody and check the screens
@@GaryFerraro if i take the valve body of do i need to change gasket's ?( On the bodie itself) I don't really have a access to mew ones right now , and if i drive the car like this for a while it's possible to brake something ?
Super!🦾
hello, I had a 722.3 transmission overhaul but it did not work I only have first gear and rear, mechanic claims I need another valve body, he said the valves are sticking inside he frees it but they stick again after transmission heat up and stay stuck until you open the valve body again to frees it.. he tried sand it a little bit but no luck. he said seems like the heat deforms the valve body unit or the valves material, does it make sense? is it possible to recover this valve body or I really need another one ? and do you have a theory to why is this happened ? thank you !!!! greetings from brazil
Hello thanks for the video excellent information. I have a question. It's possible swap a 300d that have a 722.3 transmission with a 722.4
Hello Gary. I am your fan Kazybek. I like your approach to working with an automatic transmission. The fact is that I have an old Mercedes car with an automatic transmission 722.4. I can't figure out what's wrong. 1-2 gear is missing. I can't understand what is the reason. I disassembled, replaced the friction discs, and also replaced all the components, assembled. But the car does not want to engage first gear. Reverse gear works. On the lift, the car noticeably turns on the third speed at once. I wanted to ask you for advice on this reason for the automatic transmission. Thank you in advance for your expert advice!!!
Hi Gary, i recently rebuild a 722.424 box for my other C280 . The car reverses fine but the forwards slip , like it engages drive but when i touch the accelerator it just pops out of drive and free revs , and as soon as i let go it violently re-engages drive . What could it be? Previous owner didn’t instal the intermediate gasket and put the shorter gold bolts in the wrong place.
Great video! dumb question...do you always need to replace the steels from the clutches?
If the steels are good and not burnt you can use them over
Very informative 👏. I needed some advice regarding my 722.424 gearbox as the one you performed this video on.
I have a 1996 C280, recently I fixed the vacuum manifold which distributes vacuum to the vacuum accessories. The economy function now works on the gear box, the e and s switch on the gear shifter. But now in economy it shifts earlier which is fine (like at 20km/h ,45km/h into third and about 70 into 4th with moderate throttle but it feels much slower off the start (like I'm towing a heavy load )and downshifts only if kickdown is applied or sometimes it downshifts as needed to be. My bowden cable is tightend to the max stop and modulator is properly adjusted, in standard S mode the car gets qnd goes fine locally but holds gears for a bit longer . Is this normal or is something wrong? Can you give me some guidance? Also i was having an issue regarding the kick down , I adjusted the internal full throttle adjustment Allen screw on the valve body by a 1/4 turn anti clockwise and now get it at about 30 max 2-1 downshift . If I adjust the modulator clockwise it looses the kick down if anticlockwise it shifts too softly.
The bowden cable is at the max because if I loosen it to where the 2 pointers on the throttle linkage line up, it looses kickdown and all down shifts in partial throttle
The gearbox was rebuilt by myself and I retorqued and checked clearances were in spec
All seals replaced besides the valve body but the valve body was cleaned
The car goes great with no slips or rough shifting.
My fluid level is on the max and no burnt smell or metallic or clutch shavings in the pan (rebuilt excl valvebody reseal a year ago) .
Nice video. Just finished cleaning the valve body and replace the K1 accumulator as mine does not click as it suppose too. The car shift very well in all gears, 1 problem is when ever i shift from P or N to R or D i feel a jerk reverse and forward respectively. I pressed the brake pedal as how i normally would in any automatic car. Do you have any ideas what the cause might be? Thanks.
Have you checked drive shaft and mounts?
Hello I have a 1987 300sdl with i believe the 722.3 trans.
It has no foreward only reverse. Any idea what might be wrong.
I am told it is most likely the b.2 piston. Does that sound right.
Any suggestions would be greatly appreciated. Thanks. Robert
Possible yes, that would be the rear band, Piston is on outside of case, if there is enough room, you can pull piston out
I have a 1986 300 E 722.320 trans rebuilt. I now have a guy working on the valve body and he said that 1 of the accumulator Springs is broken. So I would like to change the springs to be safe. I obviously need the one. Is there any Source you would recommend if they are no longer available at Mercedes? I use Denzel Bush Mercedes in Englewood New Jersey. I have to call them just trying to be one step ahead. There was a little material in the pan. What started happening was the trans would ride second and if I snapped the accelerator it would go into 3rd but then drop back down into second. I was able to get the seal kit with all the O-rings numbered from Mercedes last week 2024. Thank you in advance!
You could probably fine a good used valvebody to take parts from, Have you looked on line
@GaryFerraro no I haven't looked online yet. The guy who's rebuilding it said he had a good known used valve body with good Springs I just thought that with their age that the spring could break again. In your experience is that rare? I was carrying tools for a little while in the trunk.
I've been a mechanic for 30 years and work on older Volvos, older mercedes, and just about any year maker model classic car. I just never got into transmissions. I always sent them out. I just know if you use an original starter out of a 30 year old car chances of it lasting another 30 years are slim. I would think that doesn't apply to hard parts in a transmission but a used valve body spring I would think it would. But then again I'd rather take the advice of someone as experienced as you are with transmissions.
@@StevenMonticelli-ex1tg Yes that is rare, Every once in a long while to i find broken springs in the accumulators . You will be fine
@GaryFerraro ok thank you so much for responding back to me. Ive been watching your videos and like how thorough you are. Thats how I am with engines, suspensions, differentials, and electrical. Few guys left like us that are meticulous and do the job right the first time. Have a great night!
Gary I have a litle problem with my w124 300D turbo 87’ 722.4 gear case. Only goes on reverse and any forward gear . Neutral, Park and Reverse works. Do you have any idea what’s hepening here? Im from Argentina and sorry about my english.
Check the linkage first to make sure that is working properly
Very good video. Thank you.
My 722.315 will not go forward but goes in reverse firmly.
My modulator is not holding any vacuum, I ordered a new upgraded one.
I drained the torque converter and trannie fluid, and replaced the filter, fluid and added Lucas slip fix and still it will not go forward. It nudges into drive but slips after moving 1 inch forward.
Any ideas???
Trans takes off on the B2 Band, maybe issue with the band, how did the pan look when you dropped the pan? any debris in the pan?
@@GaryFerraro there was no metallic pieces or color but much dark residue looking like clutch materal
WOW, best ever, the spare part kit, is it OEM part and is so what is the part no? Thanks.
When you say spare part kit do you mean the seals for the valvebody?
@@GaryFerraro Thanks, the bag of spares you are holding up, when I start the overhaul and have a bag of spares I would like to replace parts that I hava on hand.
Gary, first of all, love the video.
So I'm actually a mercedes benz technician, I'm younger so I didnt get the opportunity to mess around with these as much as the older guys but I still consider myself to have a decent amount of experience with these transmissions. The issue I run into often is when I go and look up the parts with the oem catalog, they're not available for that vin, but when I look up that part number for the valve body seal kit it populates with options that aren't normally available. My question is, how in the world do you find these parts? Also, could we get a link to that overhaul seal kit, the picture wasn't very clear in the video? And is that test plate still available to buy, or is it discontinued?
126 270 06 35
Sometimes they are hard to get, just as Gary was saying. Occasionally I find them on eBay in the form of NOS parts (new old stock). I try to keep a few of the seal kits in stock..
I have an 300SD and the transmission was rebuilt for this same reason, not shifting out of 1st or staying stuck in 2nd. It was very slow engaging 1st and reverse.
The rebuild the transmission and it worked fine for about a month and back to the same thing. Now he says the valvebody is probably the problem, but it not serviceable. He's swamped out several valvebodies and can't make it work.
Can I send you my valvebody for reconstruction?
You can, not sure if that will fix it though, there are a couple of screens in the Aux valvebody section, if the screens are clogged may not shift from first
Good vary good sir
Thank you
hi on 1976 mercedes what should be the vacume to the modulatoe i appreciate your answer
Bom dia tudo bem sou aqui do Brasil tenho uma Mercedes c280 com o câmbio 722.4 n está mais engatando mais o RÊ e n entra mais em P oq pode cer ??
Good
Hi thanks for video , I dissembled my box and I find that yellow oil guide 14:07 broken about 10 mm of the end , I can’t find to buy one is it ok to put back shorter then it supposed to be? And next thing I find is b2 brake band short pin in my oil pan and black plastic broken kind a ring , and I can’t find what and from where it broke of, any replay welcome, thanks
If you can't find that oil lube dam just put it back, i had to do that once. The black plastic ring probably went on the band anchor for the B2 band, it holds the small pin in place, if that broke just put the small pin in place, it really shouldn't come out once the band and servo are installed
Good afternoon. Thanks for video. Tell me please . My automatic transmission mercedes 722.509 in quiet mode always starts from 2nd gear! I removed the speed regulator pressure increase valve spring. But automatic transmission vseravno starts with 2 gears! What should I do so that the automatic transmission always starts from 1st gear?
Thats usually within the valvebody, would have to chnage valvebody but not sure what will fit if this is a 722.5
@@GaryFerraro Can I put a spring on the back of the governor pressure increase valve?
Hey there leaving a comment maybe you'll see it and take the time to respond.
I have fault code 5088 on my bmw ZF6HP26
Saw one of your vids where you went through this code, but mine only says "Gear selector switch", not "Sensor, Gear selector switch"
any idea whats up with that?
Car goes into limp mode at random, ok when cold, when warm after startup can enter limp when put in drive, otherwise it also does it random when im driving. Also feel a jerk when it enters limp mode. Slight "bump" "resistance" when downshit from 2-1. Otherwise it gears fine.
Appreciate any reply a lot!
Have a good day and thanks for the videos!
The code can depend on what scanner you are using, Sounds like the range switch in the mechatronic unit may be bad, the 2-1 downshift may or may not be caused by that, the downshift bump I traced back to solenoids or worn bushings.
@@GaryFerraro Thank you. I opened up the gear selector and found 3 wires that were cut off so im currently waiting for my scanner to arrive and check if the fault code goes away with that fixed. If not i'll buy a new TCM from china. Btw do you know if i need to replace the whole TCM or is it enough with just the beige colored part?
Hi Gary, I completely rebuilt my transmission on my c280 1996 722.424 , it's having an issue
Basically it reverses fine but in d it feels like it's in fourth like it's slipping and in position 2 it just slips , could it be that the modulator is incorrectly adjusted (too soft)?
Is this starting out in first?
In fourth and if I put it to 2 it goes to first and if I go to d it goes straight into fourth@@GaryFerraro
@@rahulsoni6652 This is all mechanical , did you open valvebody?almost seems like governor valve is stuck, did you check make sure the valve is free
I'll give it a look , thanks Gary😁@@GaryFerraro
👍👍👍🔧
Thank you
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O-Ring Gasket Set - A1262700635
UTQuant, your post did not show up, you can e-mail me at gsferraro@yahoo.com