Subaru Models
- Connect a voltmeter and leads to battery as shown in illustration. Operate the alternator and turn off the switch "SW" when alternator speed reaches approximately 800 RPM. Increase speed in small increments while watching voltmeter deflection and read alternator speed when at 14 volts. Speed should be approximately 1000 RPM.
- Next, make test connections using a 30-50 Amp variable resistance, battery, ammeter, and voltmeter, as illustrated. Operate alternator with switch "SW-1" closed. When alternator speed reaches approximately 800 RPM, set the variable resistance to maximum and turn on switch "SW-2". Increase alternator speed while maintaining a constant 14 volts by adjusting resistance. Read current at 2500 RPM and 5000 RPM. Readings should be 21-25 Amps at 2500 RPM and 33-37 Amps at 5000 RPM.
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