Teri T Scranton , PA May 08, 2017 Appliance: LG Dryer DLE5977WM Lg Dryer Dle5977wm / : My lg dryer sounded as if there were rocks in it while running after replacing belt and all 4 rollers my dryer is purring. How to replace Detergent Box Assembly. I used YouTube along with the info on your website to nail down the parts. Then followed you tube repair for a successful repair. I have before and after videos if you want them. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours