Michael L Canterbury , CT October 30, 2015 Appliance: Whirlpool Undercounter Dishwasher WDF530PLYB2 Whirlpool Dishwasher Wdf530plyb2 / : Broken rack stop. How to replace Upper Dishrack Stop. Simply popped in the new stop Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes