Orijinal gönderinin sahibi: luminatorthelms ,
If it sounds like a power drill, I'd guess something is wrong with the motor shaft. But in my own LG gas dryer, the metal-on-metal sound, with rumble, was because a drum roller got bent out of alignment as I put drum back after replacing said roller. Getting drum back in wasn't easy. The drum's rim chewed that back roller away until the rim scraped on the frame around the drum.