William I Lee , MA July 30, 2025 Appliance: LG Dryer DLG3171W/00 Lg Dryer Dlg3171w/00: My lg dryer was making a load squealing noise. How to replace Idler Pulley Assembly. I replaced the four drum rollers, and for good measure, I replaced the belt and idler pulley assembly. The repair video was very helpful. Do-It-Yourself Rating: Repair Time Estimate: 2+ hours