C43 Transmission Replacement

2 year warranty, I asked about the bearings that failed in mine only.... They replace them with the newer type bearings (factory ones) so should be good, no more weak point.

Feeling more up-beat now about getting my car back on the road.
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?




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...




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




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,,
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...

Maybe thats because I'm way over here they decidded to do that?




While you take a rebuilt tranny, it means you will get an updated & stronger 580A 722.6xxx.....
ZAYED,,
The Best of Mercedes & AMG
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.
my transmission has partsnumber 722631 "01" ******
should this be an updated transmission?
Last edited by KJI3jflarryfe93; Aug 28, 2013 at 02:14 AM.




the "2" #s after 631, refers to the production line as spec. & required from MB....
ZAYED,,
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?
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.
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..
Last edited by DutchC54; Aug 6, 2015 at 04:38 AM.
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?
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.
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




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,,
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?
Last edited by DutchC54; Aug 7, 2015 at 04:02 PM.




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,,
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





been months now without my best buddy on the road.