You are approaching the point of no return! But never fear, you WILL be able to get all those arbors with their pivots, wheels and pinions back together again.

There are 4 pillars connecting the front and back plates The back plate is locked by tapered pins inserted into a hole in the end of each pillar where it protrudes through the plate, in the same way that the clock face was attached to the front plate, only with slightly larger pins.