Jonathan T Ooltewah , TN February 28, 2022 Appliance: KitchenAid Dishwasher KDTM404ESS1 Kitchenaid Dishwasher Kdtm404ess1: Worn out lower arm. How to replace Arm-Spray. Replaced part assembly. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes