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Output Test

  1. Set variable resistor to minimum resistance position. See Figure. Close switches "SW1" and "SW2".
  2. Keep voltage constant while raising alternator speed by adjusting variable resistor. Measure alternator output current at 2500 and 5000 alternator RPM. See ALTERNATOR AMPERAGE OUTPUT SPECIFICATIONS table.
ALTERNATOR AMPERAGE OUTPUT SPECIFICATIONS

Alternator Output (1) @ 2500 RPM Output (1) @ 5000 RPM
LR150-78 40 50
LR150-98B 40 50
LR150-99 40 50
LR150-125B 42 50
LR155-15 50 55
LR160-78 50 60
LR160-82B 50 60
LR160-97C 52 60
LR160-104 50 60
LR160-109 50 70
LR170-028 50 70
LT150-131B 40 50
LT150-144 40 50
8-94231-307-2 (2) 50 60
(1) Alternator RPM.
(2) Isuzu part number for Impulse.