Dryer Belt Broke – What Causes It and How to Fix It
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Understanding the Problem
When a dryer belt breaks the drum will not turn even though the motor may still run. The belt wraps around the drum and a motor-driven pulley; when it snaps or slips off, the motor runs but the drum remains stationary. A broken belt can also produce a loud thump at the moment of failure, a burning rubber smell, or visible frayed rubber when inspecting the underside of the drum. Replacing a dryer belt is a common, typically inexpensive repair, but the exact disassembly steps and the correct replacement part depend on your dryer model. Before replacing the belt, confirm the belt is the problem rather than a seized idler, bad motor, or broken drum rollers — these related parts can also cause or result from a belt failure. Always unplug the dryer (or turn off the breaker) before inspecting or repairing internal components.
Common Symptoms
Drum doesn't turn or tumble; motor runs but no drum movement; loud thump/noise when the belt failed; burning rubber smell; visible frayed or snapped belt when inspecting under the drum.
Common Causes
- Normal wear and age — belts dry out and snap after many cycles
- Drum rollers or idler pulley seized or worn, causing extra tension and belt failure
- Foreign object or overload causing sudden strain on the belt
Popular Parts That Fix This Problem
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Helpful Repair Tip
With the dryer off and unplugged, try to rotate the drum by hand. If the drum spins freely but the motor runs without turning it, the belt is likely broken or slipped off. If the drum is hard to turn, check rollers or an idler pulley too.
Frequently Asked Questions
How do I know for sure it’s the belt and not the motor?
If the motor runs (you can hear it) but the drum doesn't turn, the belt is the most likely culprit. To confirm, unplug the dryer and try turning the drum by hand — a snapped or missing belt will allow the drum to spin freely (or hang loose). If the drum is difficult to turn, the rollers or idler may be bad and putting extra strain on the belt. A professional can test motor amp draw to rule out motor issues.
Can I replace the belt myself and how much will it cost?
Yes — many people replace dryer belts themselves. Typical steps: unplug power, remove front or top panel per your model, release belt tension by moving the idler pulley, remove old belt, loop new belt around drum and pulleys, re-tension, and reassemble. Expect parts to cost $15–$40 for the belt alone; a full kit with idler and rollers is more. Allow 30–90 minutes depending on model and your experience. Always follow a model-specific service sheet or manual for safe, correct reassembly.
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