1983 300SD. Drivers window.
I have searched and found out how to remove the window, actuator and the motor, but my question is this. My window motor works, the gear behind it spins, the actuator arm with the white plastic slide is fine. However the teeth on the actuator arm seems to have jumped or something else is amiss. I might add that there is a nut that is loose on the back of the motor in front of the gear (in retrospect, this nut feels like it is 4 sided cam type nut, and maybe that it held the actuator arm with a nut either embedded in the arm or held with another nut??? None were found in the door floor though). I read of a worm gear in the assy. Where would that be. Any help to point me in the right direction would be appreciated.
I might add that there was NO noise or thump when I lowered the window. It just would not go up. I'll attempt to pull it all apart tomorrow morning.

SHEESH! one day it's the ALDA, then next the window quits.
What fun Freesil is!

Thanks.

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1986 Euro 500SEC "RUF" 9:1CR, "Rose"
1985 Euro 500SEC Cabriolet AMG Widebody
1982 Euro 500SEL "Blue"
2001 Texas Heeler (Aussie/Queensland X) "Sulphie",
2012 Queensland Red Heeler "Squeak"
Best dogs I've ever had.