I just went to Grainger and brought my whole assembly there with me.
We took the motor off the wheel (took a little convincing, but came
off) and the guy looked up the replacement. My original is a 1/2 hp GE
unit, the replacement he found was a Dayton 1/2 hp same rpm (can't
remember now), same shaft, the only difference is the replacement is 3
speed, the original is 4 speed. I had the high and low connected to
what probably is cooling and heating. I noted down all the connections
when I removed the original and will hook up the new one the same way.
Total cost with the new capacitor: $69.20. If this works when I
install after work tonight, I will have saved a lot of money. Thanks to
all for encouraging me to replace. My hesitation was due to lack of
knoweledge of where to get the replacement. Grainger seems pretty good
for that.

Thanks!
Vladimir