TM 5-3895-370-14&P5-33.ALTERNATOR ASSEMBLY TESTING (CONT).a.Regulator test (open).NOTEAlternator should be mounted in vise, shaft rotating at 3000 rpm, with jumper wireinstalled between B and field terminal.(1)Measure voltage at terminal A. Meter should read approximately 24 volts.(2)Increase rpm to 4000. (To the right [clockwise] as viewed facing the fan.)(3)Measure voltage at terminal A Voltage should increase to 24 to 25 volts.(4)Readings other than these indicate alternator is open and should be replaced.5-84
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