9. STARTING MOTOR (2) Field coil (a) Field coil continuity test Check continuity between field coil termi- nals. Good if continuity exists. If no continuity (coil disconnection), replace the field coil. (b) Field coil insulation test Check continuity between field coil terminal and yoke. Good if no continuity exists. If continuity exists (coil short circuit), replace the armature. (3) Brush Measure the length of the brush. Replace with a good one if the length is less than the limit. mm 82E-5 – 98E-5 SERIES 9-11 Standard Limit 15 9