Matt C San Diego , CA November 03, 2014 Appliance: Model AP5691577 The wheels kept falling off of my old rack i finally stopped wrestling with the lower rack and bought a new one I bought a new lower rack kit. The new design is far superior to the old one. Two wheels are now grouped together in a strong plastic housing. Installation was very simple. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes