Lionel 84798 Hunting Rabbit Car-Problem, How does it work?

Just received this.  It doesn't work, seems to be missing a part.  I can't find any schematic on how it's supposed to look/work.  I have an email to Lionel, but, they're not taking calls, and the email might go unanswered for weeks, despite the usual automatic reply.  Lionel website produced nothing, google has a cool video on how it looks, but, no info on how the mechanism works.

If anyone knows how to make Bugs and Elmer go up and down, I would love to get it fixed, because you gotta love Looney Tunes, not to mention that great Tomb of the Unknown Soldier car.  These two cars are as American as any two.

The large wheel in the center makes the figures go up and down.  The bar on the left was loose, but I know where it attaches.

The large hinge with the hole in the center looks like it should attach to that plastic roller on the inside axle.  There is no hole to insert it anywhere.  The problem seems to be that there is nothing that attaches to the large toothed wheel that controls the movement of the figures.  Thus, the movement of the car does nothing to facilitate the movement of the figures.  Something has to be able to turn that center wheel.

Thanks in advance, for any help with this one.

Jerry