Replacing fan motor in roof AC
Several years ago the fan started to slow down after several hour of use. Tried oiling the bushings which seemed to help but recently it's gotten so bad that after 15 minutes the motor slows down and ...
Forum Discussion
Ivylog wrote:
When looking for a fan motor I came across this kit but I'm not sure if it's for the fan or the compressor... leaning towards the compressor as it looks larger than the fan motor mounts.
Judging by the size of the locknuts, I am guessing it fits the fan motor. The compressor should be held down by a 3/8" or so size bolt. And the compressor should not be mounted firmly to the metal base, or it will transmit more vibrations into the base metal.
For a slow fan motor, you already found out it is rubbing, and is your cause. Many times a slow fan motor is bad bearings or a failed run capacitor. A run capacitor will run about $8 wholesale and typically is 4 or 5 MFD. Some might be as high as 7.5 or 10 MFD.
Fred.
