Nancy M Oakham , MA November 01, 2018 Appliance: Bosch SMU4052 UC/14 (FD 7402-7902) Bosch Dishwasher Smu4052: The top dishwasher tray was all rusted in several places. How to replace Dishwasher Upper Dishrack. I simply rolled it into place and snapped the rotating part under it where the old one was before. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes