Thomas M Omaha , NE November 02, 2024 Appliance: Whirlpool Dishwasher WDF520PADM7 Whirlpool Dishwasher Wdf520padm7: This assembly had work and plugged badly then the rubber seal had fell off and landed on the heat coil and not reusable. How to replace Middle Spray Arm. Fix went easy and very well to restore pump pressure to upper wand for wash cycle Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes