Joseph M Oviedo , FL December 19, 2019 Appliance: Maytag Dishwasher MDB4949SDM2 Maytag Dishwasher Mdb4949sdm2: Dishwasher rack wheel failed. How to replace Upper Dishrack Wheel Assembly. I ordered the part from Appliance Parts Pros and installed it myself. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes