ALTERNATORDual Circuit -Rectifier Plug TypeTESTING ALTERNATOR AC CIRCUIT (Lighting)Connect load lamp to AC side of connector and groundas shown in Fig. 172. Load lamp should light to fullbrilliance at medium engine speed. If lamp does not lightor is very dim at medium speeds, stop engine andremove blower housing and flywheel. Disconnect statorground wire as shown in Fig. 171.Fig. 172 - Testing AC Lights Circuit OutputWith #19236 VOA meter, check for continuity betweenground lead wire of AC coil and AC plug of connector asshown in Fig. 173. Meter reading should showcontinuity.Fig. 173 - AC Continuity TestNext, be sure ground lead terminal is not touching agrounded surface, and check continuity from terminal toground. Figure 174. Meter should not show continuity.If meter indicates continuity, coils are grounded anddefective. Examine black lead to be sure the insulationis not worn or cut. Repair with tape and shellac if a badspot is found. If ground still exists, or if AC coils do notshow continuity, stator must be replaced.Fig. 174 - Test for AC Output Ground Condition54
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