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If the idler pulley fails to maintain proper tension on the drive belt, the belt loses grip on the drum and the dryer will not spin or tumble clothes.
A worn or seized idler pulley bushing causes loud squealing, squeaking, high-pitched screeching, or rumbling/knocking noises during the drying cycle.
When the idler pulley wheel is cracked, wobbling, or has a failed bushing, it can no longer keep the drive belt seated correctly, causing the belt to slip off the pulleys.
A failing idler pulley that intermittently loses belt tension can cause the drum to stop rotating mid-cycle, tripping the motor thermal overload as the motor struggles against a slipping belt.
💡 Pro Tip: Is Your Idler Pulley the Problem?
Your part is likely the culprit if you notice any of the following:
⚠️ Dryer drum stops spinning or won't turn at all
⚠️ Loud squealing, squeaking, or high-pitched noise during operation
⚠️ Rumbling or knocking noise at start-up that fades once running
⚠️ Drive belt slips off or won't stay seated on the pulleys
🔍 Quick Check: With the belt removed, spin the idler pulley wheel by hand. It should spin freely and quietly. If it wobbles, grinds, or the center bushing spins independently inside the plastic shell, replace it immediately. Also inspect the idler arm shaft — it must be smooth with no gouges before installing the new wheel.
📦 What's in the Box
✅ 1× Dryer Idler Pulley Wheel (6-3037050 / WP6-3037050 compatible, ~3-1/16" OD, white plastic with self-lubricating bushing)
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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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