Nissan Micra Starter Brush & Field Coil Check - Service Manual Page EL-19

This is page EL-19 from a Nissan factory service manual covering the Starting System (Starter), uploaded to a 1990 Nissan Micra gallery. The page details two inspection procedures: Brush Check and Field Coil Check. The Brush Check section instructs checking brush wear with a vernier caliper against a wear limit length of 11.5 mm (0.453 in); excessive wear requires replacement. The Brush Holder subsection describes an insulation test with an ohmmeter between the brush holder (positive side) and its base (negative side) — if continuity exists, replace — and checking that the brush holder moves smoothly, replacing it if bent or cleaning the sliding surface if dirty. The Field Coil Check section describes a continuity test between the field coil positive terminal and positive brushes (no continuity means replace the field coil) and an insulation test between the field coil positive terminal and the yoke (continuity means replace the field coil). Four illustrations (figure references SEL626B, SEL627B, SEL416A, SEL417A) show caliper measurement of the brush and ohmmeter hookups to the brush holder and yoke, with callouts for the positive brushes, positive terminal, yoke, and ohmmeter. A reader learns the starter brush wear specification and pass/fail criteria for brush holder and field coil electrical tests.