mrg_c43amg

Hey guys,

So I have read every thread I could find about the 722.636 upgrade, but none of them addressed the tip vs non tip variance and how the tip one (without park interlock linkage) will work in our c43.

I am planning to go ahead and install anyways, but have no idea what to do with the park interlock linkage cable and any modifications I need to do to make sure everything works. I hope I will just have to do a little mod with the wires at the shifter but have no idea.

Also, after reading all the threads it sounded like I could just swap the linkage over but the 722.636 (out of 2002 clk55) has that hole completely sealed. No swap over possible.

Here are some pics of the differences.

You can see that the hole is completely sealed, or there isn't any.


I did get the flange swapped over.



Any help is much appreciated.

Quant

iTrader: (1)

If you are located close to ny, I can sell you my 722.636 trans from 2002 w208 clk55 . I will probably have to take solenoids out as I was using the blue tops, so you would need to replace them with original brown ones. Let me know, can give it to you for 400$

PJmak

Whats the difference between blue and brown solenoids?

mrg_c43amg

I already have on and ready to install right away. Replaced the conductor plate, filter, gasket and the brown plug. Removed the 722.631 (original c43 transmission) to have the 3-point flange swapped over as well as the park interlock linkage (found out that it can't be done as the 722.636 doesn't have the hole available to put the linkage in) and now wondering what else needs to be done, if anything, so that it'll work.

What are the solenoids you speak off? And did the original 722.636 come with them or I have to swap them over from the 722.631?

DRBC43AMG

I'm sure Zayed will be along soon with an explanation. I believe the swap allows faster gear changes, albeit with more harshness in the changes.

DutchC54

here u see what pin to remove and what parts to switch.
i also did this tranny swap... good luck.

mrg_c43amg

Thank you for the great pics!

The 722.636 transmission doesn't have those parts. The new transmission can move gears freely while the original C43 box is locked until the park interlock linkage is pushed in.

Did you end up drilling the housing and installing those parts?

Original question: Is there anything I have to do, modification wise, to make sure this swap works. The new transmission(722.636) does away with the parts you posted.

Thank you.

mrg_c43amg

We do need Zayed in here. His posts were the ones that made me assured that I am able to get the 722.636 to work in my 98 C43.

Ill definitely have to look into the blue top upgrade.

cm60k

Yeah, that 636 doesn't have cable, for that it's plugged out, when you swap it with,

you can remove that plug and and put your cable,

Blue top solenoids has a greater oil pressure & more speed shifting point than Brown solenoids, but unfortunate if you install them, you will force big jerk (that you will NOT able to live with),,

you have to stick with Brown solenoids, and don't forget to replace the pressure spring, if it bad, it will cause slips between 2>>3 shifting..!

ZAYED,,

PJmak

I have a 01 e55 trans in my car. Is it possible that the blue solenoids were left in?

I experience delay in shifting and occasional jerk from firat to second. Trans is in good shape no shavings at all was serviced recently

cm60k

Blue top is NOT compatible with early version of ME2.0/EGS51, during to the narrow file of TCU oil pressure counting with RPM range..!

Besides;

the early version of 722.6xx valve body (which C43 & E55) is little bit weak in pressure & springs kit..!!

ZAYED,,

PJmak

What configuration do you have in your car as far as trans and its components?

mrg_c43amg

Are you saying to just attach the linkage to the wire? I will take another close look but that hole looks to be cast shut. There is no way I can swap that interlock over.

My main concern is that I may not be able to shift into gear once its all installed and then, what do I do with the cable that is under the car?

DutchC54

aah now i see what u mean..
excuse me for that.
u don have a hole to install the screw which holds the black thing where the cable goes into.
sorry for mixxing up.
i just had to swap the parts shown in the pic.


Zayed knows the "how to" in your case.

cm60k

If you refers to that linkage (in your post), it's for "lock ignition>>N-position" only,

nothing to do in shifting with that cable..!

1) if you have the code "151A35", you will see that hole plugged with plastic cover & allenkey bolt,

2) if you have code "168H87", that hole is completely alloy plugged, and you will not able to re-use your Exist cable, unless if you make hole with new thread to fit your cable,,

*in my case; i didn't use this cable, i hang it-up with zip tie..

ZAYED,,

DRBC43AMG

Zayed, does this mean that in position N it is the reason why I cannot remove key from ignition? If I leave the key in the ignition, my battery will drain flat in a couple of days. In order to be able to move the vehicle in N without turning over the engine, I have to disconnect totally the battery. Is there a easier way?

cm60k

It could be Daniel,

have to check the cable in the gearbox, it may get loose or something, as well as starting switch should to be checked..!

ZAYED,,

n1_na1

Hey,
Thanks for the info and research. Im doing the tranny swap as well this weekend coming up. I recently grabbed one off a 03' CLK55 AMG. Anyone figured out the parking lock cable yet? I dont install the tranny and then trying to the cable. Thanks in advance guys. Cheers..

mrg_c43amg

Hey Guys,

Just wanted to complete the thread by letting everyone know that the swap was successful!

All that is needed:
1. Swap over the flange, from 4 point to 3 point.
2. No need to plug the park interlock linkage to new, 722.636, transmission.
3. Enjoy your new and more durable transmission.

Also, with my wife's help operating the jack I was able to do it in my garage.

I do have to comment about the gear ratios. It definitely doesn't feel as quick as compared to the shorter geared 722.631. The 722.636 gears are longer if I am not mistaken and I believe that the difference is noticeable. So take that into the consideration.

The car is on the road and I couldn't be happier. Just need to tackle the steering drag link now.

Hope this was helpful. Enjoy and let me know if you have any questions.

KJI3jflarryfe93

didn't you have to move over the park brake cable from 631 tranny to the new 636 tranny?
2. No need to plug the park interlock linkage to new, 722.636, transmission

the new 636 tranny das it hold gears longer that's why you feel the difference in shifting?
maybe with a 55 engine swap, 636 tranny will shift correctly?

m00nsh0t

Thanks! I just got my 636 transmission recently (Also from an 02 clk55) and was wondering about the interlock. Thats a real relief.

I thought the ratios were the same though? I could be wrong.


Edit: The gear ratios are the same, the 722.6 transmission range only had two different sets of ratios, and all v8 equipped cars got the same ratios.

cm60k

Ratio's are the same on "631/636", which is (580Nm),

there's no difference in hold gears or oil pressure or converter lock-up on both,,

unless if "636" comes with updated converter & valve body, (that depends to the gearbox spec.)..!!

"ZAYED"

DRBC43AMG

Perhaps "cleaning" the TCU may improve gear shifts

KJI3jflarryfe93

What is the color on solenoids on C43 - 722.631 tranny?

What is the color on solenoids on E55 - 722.636 tranny?

Do solenoids from 722.636 tranny work/shift perfectly without issues on either stock engined C43 cars or the E55 engine swapped C43 cars?

You guys who had the 722.636 tranny fitted to your car?
Did you notice any kind of inferior tranny gear shifting compared to stock C43 trranny?

Tranny being jerky or being hesitent in UP vs DOWN shifting or being harsh in shifting compared to stock C43 tranny?

Did you notice if your car got slower on top speed with 722.636 tranny compared to stock C43 tranny?

Does tranny have higher stall speed compared to stock C43 tranny?

Does tranny show higher idling-RPM on rev-meter compared to stock C43 tranny?

W202AMG