ok-thanks mb doc! Right now, the transmission has good reverse but no drive unless you rev motor. So after researching threads it seems that B2 valve is the reason why. I just wanted to get all my info before ordering parts. The pan is a 6 bolt. The numbers are milled off with an end-mill. It has some red rtv on the back of it-maybe it's a rebuild of a MB re-man/exchange trans?

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1982 240d 4-speed-sold
1981SD-also sold