A noisy dryer is telling you which component is wearing out. Listen to the type of sound.
Squealing
A high squeal usually means dry drum rollers or a worn idler pulley.
Fix: Replace the rollers and idler pulley as a set.
Thumping
A rhythmic thump often comes from a flat-spotted roller or a lump in the felt drum seal.
Fix: Inspect the rollers and the front/rear drum glides.
Grinding or Scraping
Metal-on-metal grinding points to worn drum glides or a failing blower wheel.
Fix: Have these inspected promptly to avoid drum damage.
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