Starter Armature: Testing and Inspection

ARMATURE COIL GROUND TEST
Using an ohmmeter, check to make sure that there is no continuity between the commutator and the armature coil core. If there is continuity, replace the armature assembly.




ARMATURE COIL SHORT-CIRCUIT TEST
Test the armature coil in a growler. Replace the coil if there are signs of a short. If the blade attached to the core vibrates while the core is turned, the armature is shorted.




ARMATURE COIL OPEN-CIRCUIT TEST
Using an ohmmeter, check for continuity between the commutator segments. If there is no continuity, the commutator segments are open. Replace the armature assembly.