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A worn or seized idler pulley bearing causes a loud squeaking, squealing, or grinding noise during operation. Replacing the pulley wheel and bearing assembly eliminates the noise immediately.
When the idler pulley seizes completely, the drive belt slips or jams and the drum stops rotating even though the motor continues to run. A new pulley restores correct belt tension and drum movement.
A failed pulley that no longer rotates freely causes the belt to drag across the stationary plastic wheel, cutting a groove into the pulley and producing a burning rubber smell. Replace the pulley before the belt itself is damaged.
Improper tension from a worn idler pulley causes the drive belt to wear unevenly or fray prematurely. Restoring correct pulley action protects the belt and extends overall drivetrain life.
💡 Pro Tip: Is Your Idler Pulley the Problem?
Your part is likely the culprit if you notice any of the following:
⚠️ Loud squeaking, squealing, or grinding noise while dryer is running
⚠️ Dryer drum fails to spin even though the motor is running
⚠️ Belt slipping off the pulley or visible groove/channel worn into the pulley plastic
⚠️ Burning rubber smell caused by the belt dragging against a seized pulley wheel
🔍 Diagnosis tip: With the dryer unplugged, open the front panel and manually rotate the drum. If you hear or feel grinding at the idler pulley position, or notice the pulley wheel is not spinning freely on its bearing, replace this part. While the machine is open, inspect the drive belt for wear and the drum rollers for flat spots — replacing all three at once maximizes the repair value.
📦 What's in the Box
✅ 1× Dryer Idler Pulley Wheel with Center Bearing (replaces 6-3700340 / WP6-3700340)
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Disclaimer: Compatibility information, part numbers, and model fitment data on this page are sourced from manufacturer databases and third-party references. While we strive for accuracy, please verify your appliance model number before ordering. Heima is not responsible for errors or omissions in compatibility listings.
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