The belt tensioner wheel bearing seized up which broke the wheel and caused the belt to disengauge
Kevin B. • Placentia, CA • August 01, 2014
My Repair & Advice
I turned off the dryer, unplugged it , and removed the dryer vent from the back. I removed the screws from around the vent access and removed the 1' section of dryer pipe that inserted into the dryer. I unscrewed the idler arm ( the belt tensioner) and removed it. I then screwed in the new arm and wheel assembly and then attached the belt around the idler arm and finally back around the motor pulley. Then reassembled the vent pipe and connected everything back together. Started it up, and everything worked.