Norm M Faribault , MN January 17, 2019 Appliance: Whirlpool Dishwasher WDF540PADB2 Whirlpool Dishwasher Wdf540padb2: Rear gasket on top arm failed. How to replace Manifold. Heavy glue repaired it for now will put in new part when the glue fails!!! Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes