Yes. See here under section 3, page 12 of the PDF:
The element which prevents triggering the body is #29 on this diagram. It closes a "window" when the dark slide is inserted.
Check that it rotates freely when a dark slide is inserted. Also check the spring #30.
If you look at your Hasselblad body without a back, you will see that pressing the trigger actuates a cam which protrudes at the back of the camera when pressed. "Part #29" in the back allows or prevents full travel of the trigger (by opening or closing the window) when the dark slide is removed, respectively inserted.
Does this answer your question? Hope this helps. I don't know how to describe it accurately without a picture.
EDIT:
the body cam in question, "release bar" in Hasselblad nomenclature, is #30375 in Figs. 35 to 42 of this PDF: