Originally Posted by
Tomaski
I believe these are pre-737NG drawings, possibly from a 737 classic. To the best of my knowledge, the 737NG and MAX have only one stab trim motor that runs at multiple speeds, and not the two motors shown in the drawing. The clutch mechanism could be similar, but that is beyond my level of expertise.
Yes, from postings of the same drawing in other places, it appears that these are for the Classic.