An alternator overrunning pulley (AOP) is being tested with the accessory drive belt removed. It is functioning correctly if________.
a. The pulley rotates freely in only one direction
b. The pulley is locked in both directions
c. The pulley is free to rotate in both directions
d. Either b or c
a. The pulley rotates freely in only one direction
An alternator overrunning pulley uses a one-way roller clutch that allows the pulley to freely rotate in only one direction if working as designed. Answers a, b, and c are not correct because they do not indicate the proper operation for a good alternator overrunning pulley.
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