Rotor: Testing and Inspection
ROTOR1. Measure resistance between slip rings with a ohmmeter. If it is not within standard resistance, replace rotor.
Standard resistance: 3.5 - 4.5 Ohm
2. Check for continuity between slip ring and core with a circuit tester. Replace rotor if there is continuity.
3. If slip ring surface is rough, smooth with a lathe or fine sand paper.