David P Hobart , IN November 05, 2017 Appliance: Samsung Dryer DV42H5000GW/A3-0000 Samsung Dryer Dv42h5000gw/A3-0000 / : Replaced idler pulley. How to replace Dryer Drum Drive Belt. AppliancePartsPros.com video on taking apart my dryer and replacing idler pulley really helped me out. THANKS GUYS 39 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes