How do I remove and reinstall the upper or middle racks?

To remove a rack with push tab rack stops, roll it ⅓ to ½ way out, then remove each plastic push tab rack stop from the end of each track by pushing inward. The rack stop will snap open and can be easily removed by pulling straight out. Roll the rack all the way out and remove from the dishwasher. To replace, reverse these steps and guide the wheels into the tracks.