Alternator & Regulator: Description: Notes

Ford light trucks use 2 similar alternators, a rear terminal model and a side terminal model. See Figure and Figure . Rated outputs range from 40 to 100 amps. depending upon model used. Some models are equipped with indicator lights, others with ammeters.

Alternator is belt driven from engine. Current is supplied from Alternator-Regulator system to rotating field of alternator through 2 brushes to 2 slip rings. Power is produced in the form of alternating current which is rectified to direct current by 6 diodes. Alternator regulator automatically adjusts alternator field current to maintain alternator output voltage within prescribed limits to correctly charge battery. Charging systems are equipped with a fuse link between starter relay and alternator "BAT" terminal.