Daniel W Ainsworth , IA September 26, 2014 Appliance: Model LG WM210HW Splines wore out of rotor Pulled the back cover off removed the center bolt in the rotor. Pulled the rotor off and replaced it with the new rotor. reinstalled the center blot and screwed the back cover on. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes