Sonja C Libertyville , IL March 25, 2015 Appliance: Samsung Dishwasher DMR78AHS/XAA-0000 Samsung Dishwasher Dmr78ahs/Xaa-0000 / : Broken wheels on lower rack of dishwasher. How to replace Dishwasher Lower Dish Rack Roller. Ordered new wheels here, they arrived 1 day later and I popped them into place. Easy! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes