Ford Workshop Service and Repair Manuals

Alternator: Electrical Specifications

Item.....................................................................................................................................................................................................................Specification

Single Generator

Voltage.........................................................................................................................................................................................................................12 volts
Gas (3G)........................................................................................70/115 amp (max) (R) 1,800-6,000 generator rpm, approximately 525-2,000 engine rpm
Diesel (SC1) (standard).................................................................75/135 amp (max) (R) 1,800-6,000 generator rpm, approximately 525-2,000 engine rpm
Diesel (SC5) (optional).................................................................95/200 amp (max) (R) 1,800-6,000 generator rpm, approximately 525-2,000 engine rpm

Generator

Load at 2,000 rpm (Standard)..................................................................................................................................................................................75 amps
Load at 2,000 rpm (Optional)..................................................................................................................................................................................95 amps
No Load at 2,000 rpm...............................................................................................................................................................between 13.2 and 15.5 volts

Dual Generator

Voltage.........................................................................................................................................................................................................................12 volts
Lower (SC5)..................................................................................95/200 amp (max) (R) 1,800-6,000 generator rpm, approximately 525-2,000 engine rpm
Upper (4G)....................................................................................75/120 amp (max) (R) 1,800-6,000 generator rpm, approximately 525-2,000 engine rpm

Generator

Load at 2,000 rpm (Lower)......................................................................................................................................................................................75 amps
Load at 2,000 rpm (Upper)......................................................................................................................................................................................95 amps
No Load at 2,000 rpm...............................................................................................................................................................between 13.0 and 15.5 volts