Cathy F Kissimmee , FL November 05, 2015 Appliance: Whirlpool Undercounter Dishwasher WDF780SLYB0 Whirlpool Dishwasher Wdf780slyb0: Whirlpool dishwasher leaking from motor. How to replace Diverter Motor. I ordered the motor and there was a little white plastic disc that came with it , that's what did the trick I wouldn't of needed the motor, but I opted to put it on any way because the other motor was all corroded from the dripping water, Husband replaced it all within 30 minutes. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes