OK, I looked at the photos again and have a little better concept of how that shutter works. The first plate you removed controls the speed. The ring cocks the shutter. The slow speed escapement and the self-timer constitute most of the gears you see in there - they are not the problem, as they are not in play here. If you don't have the speed selector plate in place, do that first; at least then you have some idea what to expect from the shutter when you fire it, and it may even serve to position something else relevant to the basic operation of the shutter. Make sure it sits flush (in Compur shutters it's possible to end up with it off-kilter resting on the B lever if you don't set it down in the right spot) and in the correct orientation.
