300d Transmission compatibility? (Full Version)

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300d Transmission compatibility?

  

famicom21 -> 300d Transmission compatibility? (5/5/2008 3:37:07 PM)

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 #'s stamped 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

  
85300dt -> RE: 300d Transmission compatibility? (5/5/2008 3:47:51 PM)

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

famicom21 -> RE: 300d Transmission compatibility? (5/5/2008 6:46:07 PM)

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

85300dt -> RE: 300d Transmission compatibility? (5/5/2008 8:52:41 PM)

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.

famicom21 -> RE: 300d Transmission compatibility? (5/6/2008 8:40:50 AM)

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

famicom21 -> RE: 300d Transmission compatibility? (5/6/2008 8:45:57 AM)

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

http://www.mercedesshop.com/Wikka/Trans722VacMod

85300dt -> RE: 300d Transmission compatibility? (5/6/2008 3:27:53 PM)

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" knob 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 knob clockwise. Do this in small increments.

  

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