Quote:
Originally Posted by rca2000
The blower motor on my furncae is dying...AGAIN. Once in a while--it refuses to start, and I have to spin the pulley a BIt--and it then will. It is a belt-drive, 1/3 HP normal split-phase motor. This happened before, about 8 or 9 years ago. I have a new one on the way. HOW can a motor do this--it seems to spin freely..
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A split phase motor has a start and run winding. The stationary start switch, might have bad contacts, or the centrifugal actuator might be gummed up and holding the start contacts open.
If the motor has sleeve bearings, they could be causing an uneven air gap. Because of belt tension, they get worn in one spot.
Instead of trying to trouble shoot this problem, replacement is the best policy.