Armature Coil

Using ohmmeter, check for continuity between armature coil core and insulation between commutator segments. If continuity is present, replace armature. Check armature for shorts using a growler. Replace armature as necessary.
Check for continuity between segments of commutator. If continuity is not present between any segment, replace armature.

Fig 1: Solenoid Pull-In Coil Test

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Fig 2: Solenoid Hold-In Coil Test

Fig 3: Solenoid Drive Pinion Return Test