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The idler pulley maintains belt tension on the drive belt. When it seizes or the wheel cracks, the belt loses tension and the drum stops rotating entirely.
A worn bearing inside the idler pulley creates metal-on-metal friction as the belt runs over it, producing persistent squealing or squeaking sounds during every cycle.
A slipping belt caused by insufficient idler pulley tension reduces drum rotation speed, meaning clothes tumble less and take significantly longer to dry.
A worn or stuck idler pulley causes uneven belt movement and drum wobble, resulting in noticeable vibration or thumping throughout the dryer cabinet during operation.
If the idler pulley wheel has broken off or the bracket arm has snapped, the drive belt goes slack and the motor spins freely without turning the drum.
💡 Pro Tip: Is Your Idler Pulley the Culprit?
Your part is likely the culprit if you notice any of the following:
⚠️ Dryer drum will not spin or tumble at all
⚠️ Loud squealing, squeaking, or thumping noise during operation
⚠️ Dryer runs but takes too long to dry clothes (belt slipping)
⚠️ Excessive vibration or shaking during the drying cycle
Quick test: Open the dryer door and manually rotate the drum. If you feel resistance, grinding, or the drum wobbles unevenly, reach inside and push the idler pulley — it should spring back smoothly with firm tension. A seized, cracked, or wobbling pulley wheel confirms replacement is needed. While you have the dryer open, inspect drive belt 341241 and drum support rollers 349241T — replacing all three at once saves a second disassembly job.
📦 What's in the Box
✅ 1× Dryer Idler Pulley Assembly – 691366 / WP691366 (fully assembled, white plastic wheel with metal shaft and bracket arm)
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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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