Mark F Buffalo , NY October 27, 2020 Appliance: Amana Gas Dryer NDG7800AWW Amana Dryer Ndg7800aww: After 17 years the belt tension pulley finally wore out. How to replace Dryer Belt Tension Pulley. I followed a YouTube video that provided the procedure to replace the pulley. Do-It-Yourself Rating: Repair Time Estimate: 2+ hours