Joseph P Philadelphia , PA November 28, 2016 Appliance: Whirlpool Electric Dryer WED4890XQ0 After dryer would run for a while loud ticking noise started comming from the back Replaced Blower Wheel. Stress cracks at center of blower wheel. Read More... 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes Tools: Adjustable Wrench, Nut Drivers, Screwdrivers