Robert H Des Plaines , IL October 15, 2017 Appliance: Whirlpool Gas Dryer WGD6400SW2 Whirlpool Dryer Wgd6400sw2: Dryer drum was not turning. How to replace Dryer Repair Kit (Most 29 Inch Large Capacity Models). The Pulley roller was locked up and the belt was worn. While I had it apart I replaced the 4 drum rollers as well as the 2 Drum seals. Everything went well though the Drum Seals were a little difficult to put on. Needed 4 hands! NOTE - WHEN PUTTING THE SCREWS BACK IN THE TOP TO HOLD THE LINT TRAP ROLL UP A RAG AND PLACE IT IN THE OPENING! This will avoid many bad words once you drop one down the lint trap opening. 9 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours