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The idler pulley maintains belt tension on the drum. A worn or seized pulley causes the belt to slip or derail, preventing the drum from rotating even while the motor runs.
A failing pulley bearing creates loud squealing, squeaking, or grinding sounds during the drying cycle. Replacing the assembly eliminates the noise at its source.
If the motor hums but the drum won't begin rotating on its own, a stuck idler pulley is a primary suspect. Manually spinning the drum kickstarts the cycle — a classic symptom of this failure.
A worn idler bracket loses its spring tension and can no longer keep the drive belt properly taut, causing the belt to repeatedly slip off or wear unevenly on one side.
💡 Pro Tip: Is Your Samsung Dryer's Idler Pulley the Problem?
Your part is likely the culprit if you notice any of the following:
⚠️ Loud squealing, squeaking, or grinding noise during the drying cycle
⚠️ Drum does not spin even though the motor hums and runs
⚠️ Drum requires a manual push to start rotating at cycle start
⚠️ Drive belt slips, falls off, or shows uneven wear on one side
🔍 Technician's Note: Manually rotate the drum with the top panel removed. A worn idler pulley will feel rough, stiff, or wobbly on its shaft. Also inspect the drive belt and drum support rollers (DC97-16782A) at the same time — these three parts wear together and are best replaced as a set for maximum reliability.
📦 What's in the Box
✅ 1× Idler Arm and Pulley Assembly (DC93-00634A) — Overall 6"L × 1-9/16"W × 3-7/8"H, Pulley Ø 2-7/16"
✅ 1× Installation / Mounting Screw
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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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