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The idler pulley maintains belt tension on the drum. When the pulley seizes or its bearing fails, the drive belt loses tension and the drum stops rotating entirely.
A worn or dry bearing inside the pulley wheel generates a high-pitched squealing or squeaking sound during every cycle — the most common symptom of a failing idler pulley.
If the idler pulley is seized, the motor may run but the drum won't tumble, causing the thermal overload to trip or the belt to snap shortly after.
A failing idler pulley loses its spring tension, causing the drive belt to ride off-track, slip, or wear unevenly — leading to repeated belt failures.
💡 Pro Tip: How to Diagnose a Failing DC97-07509B Idler Pulley
Your part is likely the culprit if you notice any of the following:
⚠️ Dryer drum will not spin or rotate during the cycle
⚠️ Loud squealing, squeaking, or thumping noise when dryer runs
⚠️ Drum belt slips off or breaks prematurely — loss of belt tension
⚠️ Dryer starts but stops mid-cycle; clothes come out damp and un-tumbled
🔍 Quick Check: Open the dryer door and manually rotate the drum. If you feel grinding, stiffness, or hear a dry scraping sound near the front bulkhead area, the idler pulley bearing has likely failed. The idler pulley sits between the motor and the drum, maintaining belt tension — when the bearing seizes, belt-driven drum rotation stops entirely.
📦 What's in the Box
✅ 1× DC97-07509B Dryer Idler Pulley Wheel Assembly (pulley wheel + center axle + idler bracket)
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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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