Charles B Great Mills , MD March 14, 2015 Dishwasher was all gunned up with hard water residue and detergent residue I replaced a few key parts that I couldn't clean properly, and were not spinning well in the dishwasher. Afterwards, it worked like new, and the cleaning power returned. 28 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes