Dryer Squeaking, Squealing, or Thumping — What's Worn
A noisy dryer is telling you which part is wearing out, and the type of noise narrows it down. Most of these are inexpensive parts, though they require opening the dryer cabinet.
Squealing or Squeaking: Idler Pulley or Belt
A high-pitched squeal, especially at startup, usually means the idler pulley (which tensions the drum belt) is worn, or the belt itself is failing. The idler pulley is a common, cheap wear part. If the drum turns but the belt is cracked or stretched, replace it.
Grinding or Rumbling: Drum Support Rollers
A grinding or rumbling noise that rises with the drum usually means the drum support rollers (wheels the drum rides on) are worn or seized. They come in sets and are a common cause of dryer noise — replace them all at once.
Thumping or Scraping: Glides or Bearing
A rhythmic thump can be a flat spot on a worn roller, and a scraping sound is often the front drum glides (slides) worn through, letting the drum rub the cabinet. On some dryers a failed rear drum bearing causes a grinding squeal.
Before You Open It
Make sure the noise is not just coins or a zipper hitting the drum, or the dryer being unlevel and vibrating. Once you confirm it is internal, unplug the dryer before removing the cabinet panels.
Parts & Tools
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FAQ
Usually a worn idler pulley or a failing drum belt — most noticeable at startup. Both are inexpensive parts, though you have to open the cabinet to reach them.
Typically worn drum support rollers that the drum rides on. Replace the full roller set, and check the belt and idler pulley while you have it open.
Always unplug an appliance and shut off its water supply before servicing. This guide is informational and not a substitute for a qualified technician.