Section in Assembly

Does anybody know if it is possibe to roll moving parts in an assembly through a sectioning plane in order to see the cross section? I would like to look at a cross section where two gears mesh in a particular location, but if i insert a section view and then roll the gears, the sectioned pieces just move apart, if that makes sense. I'll try to post a pic that might explain it better.

thanks,

Jesse

The first pic is where i sectioned along the horizontal, the second and third are where i roll the gears and the section splits apart. I want the section plane to stay horizontal and the gears to roll through it.

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