David R Aiken , SC March 20, 2016 Appliance: KitchenAid Undercounter Dishwasher KUDK03ITBL3 Kitchenaid Dishwasher Kudk03itbl3: Impeller and chopper were worn down. How to replace Dishwasher Food Chopper Assembly. Replace with new impeller kit and chopper. Do-It-Yourself Rating: Repair Time Estimate: 2+ hours