William R Garrett Park , MD June 17, 2018 Appliance: KitchenAid Dishwasher KUDA230YWH1 Kitchenaid Dishwasher Kuda230ywh1: Dishes in upper rack were not getting cleaned well problem was upper water delivery tube had collapsed resulting in severely restricted water flow dishwasher is ~20 years old!. How to replace Water Delivery Tube. Replaced water delivery tube. Major improvement in performance. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes