Some answers.




I bought it knowing the transmission flared because

Usually an indication of a transmission rebuild needed. You can change the filter and fluid, adjust the modulator, ensure the shift point rod is adjusted correctly and you might get lucky but probably not.

87K on a 1973? I think not.


So it shifts early, and flares between 2-3. It also does not shift into 4th.

It does have a 4 speed auto. 1st gear is almost never engaged unless you manually shift it through the gears.

My questions:
1. Where can I find the transmission type? 722.102 and 722.202 are listed as possible transmissions and I can’t find a chart for it.

Originally was a 722.2XX

2. Where is the vacuum modulator? Does it even have one? From the articles I’ve read (including Steve Brotherton’s article on vacuum control), I don’t draw the conclusion that ALL Benzes have the vacuum control of the transmission. The threads that I find are usually in the Diesel discussion and that is what I had before.

Located on the right hand side of the transmission above the pan. Follow the vacuum line. To adjust, remove the banjo bolt, if fluid comes out the modulator is bad, insert an allen wrench (I think it's a 5mm) and turn for adjustment. CW for faster, harder shifts. Put a vacuum gauge on the line BEFORE adjusting to check the pressure.