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Cs Series - Alternator Output Test

  1. Run engine at moderate speed, all electrical accessories off. Measure voltage across battery, if above 16 volts, replace alternator.
  2. Connect an ammeter in circuit at "BAT" terminal of alternator. Turn on all available accessories. Connect a battery load tester across battery. Operate engine at 2000 RPM and adjust battery load tester as required to obtain maximum current output while maintaining 13 volts or more.
  3. Output must be within 15 amps of rated output stamped on alternator. If output is not within 15 amps of rated output, replace alternator.
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