Larry R Lugoff , SC April 22, 2017 Appliance: Whirlpool Dishwasher DU890SWKU0 Whirlpool Dishwasher Du890swku0: Timer was worn out. How to replace Dishwasher Detergent Dispenser Actuator Spring. Replaced with new timer also replaced detergent cup spring. It was easy to install Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes