What is the other end of the compression spring pushing against? Is there a “ground” that is not modeled that the other end of the compression spring pushes against? Force D is on a rotating part. Is the other end of that compression spring also rotating?
The title of this discussion is about rotation. What axis are you talking about for rotation? Is it the central axle that is along the Z axis? You don’t have any load that causes rotation about that axis. You have Force E which seems to pass through the central axis. Force E could produce some small deformation of the central axis by bending, but I don’t think that is what you are interested in.
In the new images, I see a lever off the central axis. If you were to apply a Remote Displacement to the hole in the lever and set the X component to -5 mm leaving the other components Free, then you should see the rotating assembly rotate.
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