Glynn W Chaplin , KY December 06, 2019 Appliance: Maytag Dishwasher MDB7100AWW Maytag Dishwasher Mdb7100aww: Upper rack roller broke. How to replace Upper Dishrack Wheel Assembly. Replaced roller. No tools were required. Repair video was a big help Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes