Lino C Bellemont , AZ April 28, 2014 The metal tab of the combustion duct attached to the heat duct shroud fractured causing annoying din I removed the bottom and front panels, then I removed the drum, then removed the attachments on the combustion duct, then I installed the new combustion duct, reinstalled the drum, reinstalled the front and bottom panels, and that was it. Read More... Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes Tools: Nut Drivers, Screwdrivers, Socket Set