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Load Test

  1. Connect tachometer to engine. Start engine. Load alternator by switching heater/air conditioner blower motor to high position and headlights to high beam. Increase engine speed to 2000 RPM.
  2. Voltmeter should indicate at least .5 volt more than base voltage under normal operation. If voltmeter indicates high voltage (3 volts greater than base voltage), go to HIGH VOLTAGE TEST. If voltmeter does not indicate at least .5 volt greater than base voltage, go to LOW VOLTAGE TEST.