Alternator: Description and Operation

Fig. 1 Delcotron Type CS-130 & CS-144 Alternators.:

These units feature a high ampere output-to-weight ratio. The Delcotron CS-130 & CS-144 alternators are electrically similar to standard units, however, they do not contain a diode trio. The voltage setting of the integral regulator varies with temperature and limits system voltage by controlling rotor field current.

The regulator has four terminals; "P," "L," "I," and "S." The "P" terminal is not used. The "L" terminal may be connected to the instrument cluster for charging indicator and voltmeter. The "I" terminal provides a voltage feed for the heated oxygen sensor, variable throttle control
relay, and electronic automatic transmission. The "S" terminal is not used.

The alternator is serviceable only by complete replacement only. No periodic maintenance is required. It should not be disassembled for any reason.