Mario C Salinas , CA June 21, 2019 Appliance: Whirlpool Dishwasher DU960PWKB1 Whirlpool Dishwasher Du960pwkb1: Spray arm retainer broke. How to replace Spray Arm Retainer. Replaced spray arm retainer. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes