Dave H Northridge , CA December 03, 2017 Appliance: LG Dryer DLG8388NM Lg Dryer Dlg8388nm / Anbeeus: Noisey. How to replace Dryer Idler Pulley. Replaced all 4 drum rollers. I had replaced the belt, idler pulley and one roller about a year and a half ago. Should have broken down and replaced all of the rollers then. Had to go back in when two more of them failed recently. The video made the repair much easier. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours