Front bulkhead, air duct, felt seal & cylinder (lg4809l/p1163708wl) (lg4809w/p1163707ww) (lg4909l/p1163715wl) (lg4909w/p1163714ww) (lg9109w/p1163703ww) (lg9209w/p1163711ww) Diagram
The idler pulley exerts pressure keeps the drive belt tight so it can rotate the drum. A worn idler pulley squeals or squeaks when the dryer is running. Follow these instructions to replace it.