Les K Crystal Lake , IL March 25, 2016 Appliance: Maytag Dishwasher MDBTT79AWW Maytag Dishwasher Mdbtt79aww: Broken wheel on rack adjuster assembly. How to replace Rack Adjuster Assembly. I ordered a new Rack Adjuster Assembly for my Maytag dishwasher from AppliancePartsPros. Then installed it on the upper dishwasher rack. I ordered the part Sunday afternoon - it was shipped Monday and I received it on Tuesday. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes