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Seized or broken idler pulley loses tension on the drive belt, causing the drum to stop rotating entirely even though the motor still runs.
A worn or dry idler pulley wheel generates loud squealing or screeching during every cycle as the belt drags across the failed bearing surface.
A collapsed or cracked idler pulley creates an uneven contact surface that produces rumbling or rhythmic thumping as the drum turns.
Without proper tension from a functional idler assembly the drive belt loses its path and repeatedly slips off the drum or motor pulley.
A stuck or damaged idler assembly prevents the belt from rotating the drum smoothly, causing the entire appliance to vibrate or shake during operation.
💡 Pro Tip: Is Your Idler Assembly the Problem?
Your part is likely the culprit if you notice any of the following:
⚠️ Dryer drum stops spinning mid-cycle or refuses to start tumbling
⚠️ Loud squealing, screeching, or rumbling noise during operation
⚠️ Drive belt slips off the drum or motor pulley repeatedly
⚠️ Visible cracks, flat spots, or seized rotation on the idler pulley wheel
🔍 Quick Check: Reach inside the dryer cabinet and try spinning the idler pulley by hand. If it grinds, wobbles, or won't spin freely, the assembly needs replacement. Pro tip: while the dryer is open, also inspect the drive belt and idler spring — replacing all three at once saves a second service call.
📦 What's in the Box
✅ 1× Dryer Idler Pulley Assembly — Idler Arm + Pulley Wheel (Replaces WP37001287 / 37001287)
⚠️ Note: Idler tension spring is sold separately and is NOT included in this listing.
We typically respond within 1 business day. Include your appliance model number for the fastest answer.
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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