stryker2000
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- Joined
- Sep 12, 2015
- Messages
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I was hearing a humming through the air ducts and went outside to hear the ac unit making a ridiculously loud noise. I turned it off and spun the motor blades slowly and it vibrated and shook the unit. The old motor shaft moves in and out quite a bit compared to the new one. Replaced motor and capacitor. Now, it comes on, the loud noise isn't there but the blades are turning slower and sounds almost like a grinding sound. It doesn't look like it is hitting on anything. I turned it on again and same thing. Blade spins slower than before. New motor spins freely and smooth. No noise and no vibration when I turned it by hand. The old motor ran extremely noisy, very wobbly and vibrated unit but it spun full speed. I looked up both motor and capacitor and replaced exact units.