Robert A Lansing , MI November 21, 2016 Appliance: Magic Chef Dishwasher DU20JV Magic Chef Dishwasher Du20jv: Impellel seal leaking. How to replace Impeller A. Disconnected the pump and motor assembly and pulled the unit out from the tub then removed the motor (left hand threads) from the impeller and replaced the impeller and seal reinstalled this fixed the problem. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours