James D Brentwood , TN February 03, 2016 Appliance: Whirlpool Undercounter Dishwasher WDF510PAYB6 Whirlpool Dishwasher Wdf510payb6 / : Whirlpool dishwasher pump motor failed. How to replace Circulation Pump Motor. Order part from Appliance Warehouse and installed. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes