sorry for newbie question probably.

having problems draining tranny fluid
from my w123 '81 300d

1. the tranny drain pan looks different
than pictured in the Haynes manual.
there is no drain plug....

should I drain from the filler tube
inlet (at least I think that's what it is)
at the passenger side front?

or is there another drain port that
I should use?

2. can't seem to find the drain hole
in the torque converter. Is it possible there is none? or have I just missed
it? I don't seem to see it when
the engine is cranked to try to
get the drain plug in the "grille" opening....

or is there a drain hole for this
somewhere else?

thanks.