ALTERNATOR10 Amp-Fuse TypeTesting Rectifier-Regulator AssemblyWith changing lead connected to battery, check voltageacross battery terminals with DC volt-meter. See Fig.223. If voltmeter reads 13.8 volts or higher, reducebattery voltage by connecting 12 volt load lamp acrossbattery terminals.When battery voltage is below 13.5 volts, note voltage.Start engine and run at 3600 RPM. Voltmeter readingshould rise. If battery is fully charged reading should riseabout 13.8 volts. If voltage does not increase and statorhas been checked previously, rectifier-regulatorassembly is defective and must be replaced.Condition Found (Continuous High Charge Rate)Start engine and run at 3600 RPM. (Charge lead mustbe connected to battery.) Measure voltage across batteryterminals with DC voltmeter. See Fig. 223. Voltmeterreading should not be above 14.7 volts. If voltage ishigher regulator-rectifier assembly is defective and mustbe replaced.NOTE: A high charge rate with voltage below 14.7 voltsindicates battery condition is poor. Test battery!Fig. 223 - Rectifier-Regulator Check69
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