Chris D El Dorado Hills , CA November 03, 2023 Appliance: KitchenAid Undercounter Dishwasher KUDS02SRSS4 Kitchenaid Dishwasher Kuds02srss4: Persistent grinding noise from main assembly when running. How to replace Pump And Motor Assembly. Without knowing exactly what the actual problem would be; Main motor? Drain pump? I decided to replace the entire main motor/pump unit of my 17yr old washer. AppliancePartsPros.com has great DYI videos for EACH of the parts they carry. Replacement process was easy given the video instruction. Took the old unit apart and found that it was the $17 food chomper that had broken. Oh well. But through AppliancePartsPros.com, purchased a replacement chomper and rebuilt the old unit to keep as a spare. Who knows when the main motor might fail. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes