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Dryer makes a persistent high-pitched squeal or grinding sound during operation caused by a worn jockey pulley bearing losing its smooth rotation.
Motor runs but drum fails to spin or stops mid-cycle because the failed pulley can no longer keep the drive belt tensioned against the motor shaft.
Belt skips, slips, or snaps sooner than expected due to insufficient and uneven tension from a seized or wobbling jockey pulley wheel.
A loose or slipping drive belt caused by a worn pulley generates friction and heat, producing a distinct burning rubber odour during drying cycles.
Drum rotates normally then suddenly slows or stops mid-cycle as the damaged pulley bearing intermittently binds, causing inconsistent belt tension.
💡 Pro Tip: Is Your Jockey Pulley the Problem?
Your part is likely the culprit if you notice any of the following:
⚠️ Loud squealing, squeaking, or grinding noise when the dryer is running
⚠️ Drum stops rotating or rotates intermittently despite the motor running
⚠️ Drive belt slipping, fraying, or snapping prematurely
⚠️ Burning rubber smell caused by a slipping belt under low tension
🔍 Diagnosis tip: Open the back panel and spin the jockey pulley by hand. If it wobbles, grinds, or turns stiffly, the bearing has failed and replacement is required immediately to avoid belt breakage and motor damage.
📦 What's in the Box
✅ 1× Belt Tension Roller / Jockey Pulley Assembly (OD 57 mm × ID 8 mm × W 29 mm) — replaces 1250125034 and all cross-reference part numbers listed above
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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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