How To Repair Dishwashers/KitchenAid Repair/Chopper ...
The pump output is in the center. There is a coarse filter formed by the slotted cover at 7 o''clock (and below) that passes water to the chopper unit. The details of the water flow are unclear to me, but apparently a large fraction of the water flows through the chopper; because blocking this severely reduces the water flow out through the pump.