TM 5-4240-5501-148PALTERNATOR11/2 Amp1-1/2 AMP ALTERNATOR Used on Model Series130000The integral 1-1/2 ampere alternator, with solid staterectifier, is designed for use with a compact battery. A12 ampere hour battery is suggested for warmtemperature operation and a 24 ampere hour batteryshould be used in cold service.The alternator is rated at 3600 RPM. At lower speedsavailable output is reduced.Fig. 150 - Alternator AssemblyWHEN CHECKING ALTERNATOR COMPONENTS,MAKE THE TESTS IN THE FOLLOWING SEQUENCE:CHECKING 1-1/2 AMP. NON-REGULATEDALTERNATORCondition Found (Battery Run Down)Check battery polarity. Negative (-) side of batteryshould be grounded to engine or frame: positive (+) sideof battery to starter motor and alternator charge lead.Figure 151. If reversed, rectifier will be damaged.Fig. 151 - Typical Wiring InstallationTesting for OutputDisconnect connector or charging lead from chargingterminal. Fig. 152 and 153. Do not allow terminal oncharging lead to touch engine or equipment. Clip 12 voltload lamp between charging terminal and ground. Startengine. if lamp lights, alternator is functioning. If lampdoes not light, alternator system is defective. The sametest may be performed using 19236 Briggs & StrattonVOA meter.Fig. 152 - Checking OutputFig. 153 - Checking Output, (Alternate Style)Testing StatorUnplug connector or disconnect charging lead frombattery and rectifier assembly on alternate style.Remove screw from ground wire or rectifier assemblyfrom starter motor. Turn rectifier assembly to exposewires attached to soldered terminals on alternate style.48
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