Ken M Carmichael , CA December 31, 2017 Appliance: Whirlpool Electric Dryer LER7648PQ1 Whirlpool Dryer Ler7648pq1: Drum felt and belt. How to replace Dryer Drum Belt 92-1/4" 4-Rib. It went exactly as the videos showed! Half hour for the glue to dry and 5 minutes to replace drum and belt. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes