Evan B Salida , CO May 11, 2023 Appliance: Whirlpool Dishwasher WDT780SAEM1 Whirlpool Dishwasher Wdt780saem1: The dishwasher had stopped washing dishes but still drained and seemed to be otherwise working normally. How to replace Pump And Motor Assembly. After running a test cycle and verifying the wash pump was not coming on, ordered the sump and pump. It took around an hour to complete the installation, but I moved slowly and did a lot of cleaning of the interior as well. Worked perfectly. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes