Bench Testing: Stator

Visually inspect stator for burned or discolored windings, scuff marks on the inside of stator frame, or damage to stator frame. Check resistance between stator leads and stator frame. Resistance should be infinite. Check continuity between leads of stator coil. There should be continuity in all three positions. An internal short between adjacent stator windings may not be detectable. If alternator fails to supply rated output, stator windings may be shorted. If readings are not normal, replace stator.