Frequently Asked Questions
•How do I remove the blower wheel from the motor shaft if it's stuck?
Penetrating oil can help loosen a stuck blower wheel. Apply it to the junction between the wheel hub and the motor shaft. Let it sit for 15-20 minutes, then try gently pulling the wheel off. A blower wheel puller tool might be necessary for stubborn cases.
•What type of lubricant should I use on the motor shaft after replacing the blower wheel?
A small amount of high-temperature grease, such as white lithium grease, can be applied to the motor shaft before installing the new blower wheel. This helps prevent seizing and makes future removal easier.
•How can I tell if the motor bearings are failing versus the blower wheel being damaged?
Failing motor bearings typically produce a high-pitched squealing or grinding noise that increases with motor speed. The noise will originate from the motor itself, not necessarily the blower wheel area. A damaged blower wheel will usually cause a more noticeable vibration and potentially a scraping sound due to imbalance or physical damage. Remove the belt and spin the motor pulley by hand to check for bearing noise/roughness.