Robert H Rocklin , CA July 11, 2020 Missing roller on dishwasher. Extremely simple. Inserted little flange into center hole in wheel, which took a couple of light taps with a hammer. Placed in position on dishwasher tray and snapped flange to secure on tray. Difficult to do anything wrong. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes