Try:
http://www.wikihow.com/Check-an-Electric-Motor
Also, make sure no electricity is going to the system (pull fuses/turn off all involved circuit breakers) or you could get hurt. If unsure, get a pro!!!!!!!!!!!
http://www.wikihow.com/Check-an-Electric-Motor
Also, make sure no electricity is going to the system (pull fuses/turn off all involved circuit breakers) or you could get hurt. If unsure, get a pro!!!!!!!!!!!