hello all,

i have a grey market import 1984 300D with the automatic 4 speed transmission (which died and has been removed)
the original transmission is stamped with this:






1232705601 722.405 02 072250

i am leaving college thursday morning, and have found a transmission on the way home at a junkyard. 139,000 miles, grade "A" (less than 15k per year), this transmission has these #'sstamped on the side:

1232705901 722.315 02 505438

will it work in my car? they both have a mechanical speedometer sensor.

a quick response would be much appreciated

thanks a bunch
-justin

 

They should bolt up fine. Only issue is the vacuum adjustment.

 

what is the difference? i will just need to adjust something a little differently?

 

The vacuum modulator. If the new trans was from a Turbo model, the modulator will have to be adjusted if you have a n/a model.

 

is this something i could swap onto the new transmission from the old one?

 

or... is this what i need to do?

 

On the left side of the transmission (drivers side) there is a round plastic (normally green in colour) modulator with a vacuum line connected to it. What I would do is do the swap and make sure all vacuum lines and linkages are properly connected. Fill the tranmission with fluid, then take it for a short drive. If your shifts are harsh, then there is a "T" **** on the modulator - turn it counter clockwise to soften the shift. If the shift is too soft or feels like it is slipping, then firm up the shift by turining the **** clockwise. Do this in small increments.

 

I have an 1984 300d and the tranny has stopped moving the car forward reverse is fine. It will go but only if you rev it up. I the option of a free 1981 300d wagon, will the tranny bolt up if i need it.

 

I am looking to find out what's compatible in my 86 300SDL (greasel) and found this link, but it doesn't mention the SDL, maybe it can help someone else. http://www.jpat.co.uk/Mercedes%20tra...0reference.pdf

 

Can I use a tranny from '82-'85 300D or 300SD for my '81 300D?