Determining whether a clothes dryer blower wheel or fan blade is damaged, cracked, or loose on the motor shaft involves performing a visual and tactile inspection. Key signs of a bad blower wheel include a loud vibrating rattling noise coming from the lower front or rear housing, reduced airflow at the outdoor vent hood even when the duct is clean, or a burning smell caused by lint wrapping around a wobbling fan hub. You can troubleshoot blower components safely by unplugging the dryer and removing the exhaust duct housing. You can verify that your blower wheel is bad when noticing that the plastic fan blade spins freely on the motor shaft without turning the motor or shows cracked fins confirms that you must replace the blower wheel assembly immediately.
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