KJI3jflarryfe93

why didn't you get a 722.636 trans instead of the c43 tranny?
was it the same price between both transmissions?

are springs the only weak point on our transmissions?
or
are bearings also going bad?

are these springs easy accessable when dropping the oilpan or conductorplate?
if it's only springs going bad and if they are easy access, why not doing a preventative overhaul swapping thes weak springs, this will be a cheap upgrade and will save you a lot of cash and future headache?

DRBC43AMG

Hoffy83 good job man Nice to hear that shipping is reasonable considering the trip across the Pacific!

Is the transmission sold in part exchange? That is often the case and if not I consider that an excellent deal. If my transmission goes, I know what I wil be doing...

cm60k

+1,

722.636 is great,

also C32 is a good choice to go....

ZAYED,,

KJI3jflarryfe93

newer transmissions from c32/c55/e55 with tiptronic they simply click with the electronics in our cars without modifications?
trans is just mechanical and electronic connectors are the same as ours they are plug n play.
this means we have a wider source to get replacement transmissions from several donor cars?
slk32/55 - c32/55 - clk55 - e55

cm60k

Agreed,

We have a many sources,

basically; all 722.6 electronics & connectors are the same, from 1996 to 2006, you can put any 722.6 580A,,

just in some cases, the "2" things could be difference,

the front housing, that attached to the Engine, and the flanges which flex disc were in,,

there are a little different in the tranny case, that could found in 722.64XX, just a small touch will fit perfectly.....

ZAYED,,

Hoffy83

I kept with just using a rebuilt (stronger than original due to ****ty original bearings) 722.631 for simplicitys sake. Should not have any issues if i ever end up going for the 5.5.

Hoffy83

Just a straight sell, I dont have to send my transmission over Maybe thats because I'm way over here they decidded to do that?

cm60k

That’s good,

While you take a rebuilt tranny, it means you will get an updated & stronger 580A 722.6xxx.....

ZAYED,,

Pagz

Quick question

I have a list of 17 C43 transmission numbers from local cars, the numbers are like this:

10 x 98 C43 transmission are 722631 00 ****** ,all of the 98 trans have "00"

Later transmission like mine in 1999 have 722631 "31" ****** or 722631 "11" ****** etc where "31" and "11" stand out. what is really interesting is the local 202 C55 has 722636 "01" ******, and also 2000 model C43 tiptronic has a 722631 "01" ******( where ****** is unique number)

From this I assume the 2 digit number shows updated trans?

So that would make the weak trans's have "00" ??

this trans info was taken from there data cards

Food for thought.

KJI3jflarryfe93

my car is a late 98 registered as an early 1999 with newer style stereodeck and fiber optics loom.
my transmission has partsnumber 722631 "01" ******
should this be an updated transmission?

cm60k

As i know; "ZF-AG" is the company which produce the Transmissions for MB since 1960, they have a life contract with MB till now,,

the "2" #s after 631, refers to the production line as spec. & required from MB....

ZAYED,,

Pagz

So there is high chance any production line spec that is not "00" will be some what updated trans?

cm60k

It could be, not sure about this,

the only thing that MB updated is the "Valve Body", all other things are the same.....

ZAYED,,

Hoffy83

Mine was a '00' and failed at 223,000km approx

Hoffy83

OK Bit of an update, Transmission is being installed at the moment, cant wait to get her back on Monday! been months now without my best buddy on the road.

KJI3jflarryfe93

do you have the new tiptronic trans in your car?
that's weird if it blew out on you?
my 99 has only covered approx 106000km and still works great, that's half of your mileage.

did you do the fix at the stealership?
how much was the cost of a new or repaired transmission?
how much was the labour cost?

Hoffy83

I don't know what year was installed, doubt it would be the triptronic though!

But lets be honest here, its a 220,000km old V8 with plenty of torque that has not been babied. I was not surprised that it went.

It was done at an independent place here locally, but had to buy the transmission from USA as we could not source one here in Aus.

Total cost to get it bought, shipped, customs fees, and installation is around $5500 AUD. Remember that these cars are worth around $20-30k here still.

DutchC54

so my transmission blew last weekend.
i now have indeed a 722.631 and i can get a 722.636 low mileage for a very good price.

question is.. do i also need to swap the controle unit or something else.
i saw some picture on ebay from a 722.636

and i notice 2 extra connectors which i dont have on my C43.
what are these for .. i only have one big round connector..

KJI3jflarryfe93

did you kill your original tranny or was that a replacement tranny breaking down?
tranny does it engage in D?

watching your youtube videos, it shows you're kinda brutal on accelerator.
when you drive your car like a getaway driver is it fully warmed up to work temperature b4 your floor it?

DutchC54

my engine was replaced a month ago.
opened up and seemed to have had cooling issues and lubrication problems.
this is probably indeed due to my brutal handling.

as for the gearbox.. a bearing has spun and ruined the planetary gears.. metal pieces all over the place when pulling the little oilpan.
this is probably also because of me using my car where its made for..
but im also honest that im not always patient enough to wait for some good temperatures before i start to floor it.

the gearbox is picked up now while i typ this.

in the future i need to behave a bit more and become more patient before pressing the pedal again.

ooh btw.. my mileage is 310.000km so thats not really bad to replace a gearbox on such car with such power and driver
if u are interested i can post some pics of the damage.

KJI3jflarryfe93

please share pictures of your damage.

drive your car normal for approx 20-25 minutes before you start playing.
i have a loop of driving for 20-25 minutes around my town before i hit the axxelerator.
i then know my tranny/engine is warm b4 i stomp it

cm60k

If you need more powerFUL gearbox, you can go with 643 or 649, just need simple mod. to let it work,

636 is same output of our C43/631, just need to remove the rear plug and put your parking cable in it,,

no need to change TCU, just use your Exist one..

ZAYED,,

DutchC54

.636 is installed tomorrow.
thanks for your advice.


from what car/year is the gearbox u mention???
and whats the mod i need to do if i would aquire one?

cm60k

643: for all 55K's

649: for S600/S65/SL600/SL65 Bi-Turbo

*you just need to Expand or re-drilled hole in gearbox mount bracket, to fit the 2 bolts properly..

ZAYED,,

BlownC43

Hi Zayed,

i have a 98 C43 with an HPS Supercharger and had my 722.631 tranny break. I sourced a 722.643 out of a 2005 CL55 AMG with 89k miles.

what would i need to do to make this tranny 722.643 fit in my C43?

Thanks GP