Dryer Drive Belt Broken
A completely broken drive belt has a distinct signature: the motor runs (you can hear it humming) but the drum does not turn at all, and clothes just sit in one spot at the bottom of the drum. That is different from a belt that is merely worn, which usually squeals or thumps for a while before it finally lets go.
The belt wraps around the drum and is held taut by a spring-loaded idler pulley, then loops around a pulley on the motor shaft. When it snaps or slips off its pulleys entirely, the motor keeps spinning on its own but has nothing connecting it to the drum anymore.
If the drum will not turn but you have not confirmed the belt itself has broken, see Dryer Drum Not Turning for the broader diagnostic covering every cause, not just the belt.
Safety first. Dryers combine household electricity, a spinning drum and motor, and -- on gas models -- a live fuel line.
- Unplug the dryer, or shut off the breaker for a hardwired unit, before removing any panel or touching internal components.
- Gas dryers: shut off the gas supply valve behind the unit before working on it. If you smell gas at any point, leave the area immediately and call your gas utility from outside -- do not flip switches or search for the leak yourself.
- Lint is flammable. A clogged lint trap or exhaust vent is a fire hazard, not just a performance problem -- treat a dryer that runs hot, or a thermal fuse that keeps blowing, as a reason to check the vent, not just replace the part.
- Call a licensed technician if you are not confident identifying or safely accessing a part.
Most Likely Causes
- Belt has snapped — Rubber drive belts stretch and crack with age and heat cycling over years of use until they finally break, usually during a normal cycle with no warning beyond a squeal in the weeks before. Sold as Dryer Drive Belt (3387610) or Belt (5303283471).
- Belt has slipped off its pulleys — Even an intact belt can jump off the idler pulley or motor pulley if it was already loose or the idler pulley bracket has shifted, producing the exact same "motor runs, drum does not turn" symptom as a snapped belt.
- Idler pulley has seized — If the idler pulley bearing locks up completely rather than just squealing, it can hold the belt too tight to move and either snap it immediately or stall the drum.
This applies identically to electric and gas dryers -- the belt-driven drum assembly is the same mechanical system regardless of how the unit generates heat.
How to Check and Replace It
- Unplug the dryer (shut off the gas valve first on a gas model) and remove the front or top panel per your model's service path to access the drum and belt.
- Look directly at the belt path around the drum -- a snapped belt is usually obvious, either missing entirely or hanging loose inside the cabinet.
- If the belt looks intact but is off its pulleys, check the idler pulley for free rotation before reinstalling; a seized pulley will just throw the belt again.
- Route the new belt exactly as the old one came off, typically with the ribbed side against the drum, then over the idler pulley and down to the motor pulley -- take a photo before removing the old one if you are not sure of the path.
- Spin the drum by hand after reassembly to confirm the belt tracks straight and the drum turns freely before running a cycle.
Buy the Idler Pulley at the Same Time
If the belt broke on its own rather than from an obvious outside cause, it is worth replacing the idler pulley in the same repair rather than waiting for it to fail separately. Both parts wear out on a similar timeline since they experience the same heat and friction, and a worn pulley bearing is a common contributor to belts failing early in the first place. Doing both at once also means only opening the cabinet panel a single time instead of twice.
Check Your Exact Model
Once you have narrowed the cause down to a part type, confirm it against your exact dryer rather than guessing from the brand alone. Use the model and part lookup tool to search by your dryer's full model number, or start from one of these confirmed model pages to see the exact parts list for that unit:
- Whirlpool 10687884600
- Whirlpool 10687884100
- Whirlpool 11060372710
- Whirlpool 11060012001
- Whirlpool 11060012002
Related Symptoms
If this is not quite the problem you are seeing, browse the full list of repair symptoms.
| Symptom | What it looks like |
|---|---|
| Dryer Drum Not Turning | Drum has stopped turning -- covers every cause, not just the belt |
| Dryer Squealing Noise | High-pitched noise before a full failure |
| Appliance Making Loud Noise | Grinding, thumping, or rattling during a cycle |
Still not sure? Use the model and part lookup tool to search by your appliance model number directly.
How to Confirm Before You Buy a Part
Before ordering any replacement part, take a minute to confirm fitment -- it is the difference between a repair that works the first time and a part that has to be sent back.
- Find the model/serial plate. On most dryers it is inside the door opening (printed on the frame you see when the door is open), behind the lint trap housing, or on the back panel near the power cord. See how to find your model number if you cannot locate it.
- Read the full model number exactly as printed, including every letter and dash -- manufacturers reuse near-identical model numbers across different production runs that take different parts.
- Verify the part fits that exact model using the model and part lookup tool before you buy, rather than assuming a part that looks the same will fit.
The full model number matters more than the brand and appliance type alone. Manufacturers commonly reuse one body design across many model numbers over several years, changing the exact door switch, control board, or heating circuit partway through the run -- so two dryers that look identical side by side can still take different parts.