Curtis K Maysel , WV March 26, 2020 Appliance: Model DDE7200RALWH Worn idler pulley Removed small panel in back of dryer. Idler pulley rides on an idler arm that acts as the belt tensioner. Replaced pulley, reinstalled idler arm. Reinstalled panel. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes