ENGINE ELECTRIC DEVICES
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1452-01
OVERVIEW AND OPERATION PROCESS
1. CHARGING SYSTEM OPERATION
Alternators use a new type of regulator that incorpo-rates a diode trio. A Delta stator, a rectifie
bridge, and a rotor with slip rings and brushes are electrically similar to earlier alternators.
A conventional pulley and fan are used. There is no test hole.
1) CHARGING TIME REQUIRED
The time required to charge a battery will vary depending upon the following factors:
A Completely discharged large heavy-duty battery required more than twice the
recharging time as a completely discharged small passenger car battery.
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A longer time will be needed to charge any battery at than at
When a fast charger is connected to a cold battery, the current accepted
by the battery will be very low at first. The battery will accept a higher current rate as the
battery warms.
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A charger which can supply only 5 amperes will require a much longer charging period
than a charger that can supply 30 amperes or more.
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A completely discharged battery requires more than twice as much charge as a onehal
charged battery. Because the electrolyte is nearly pure water and a poor conductor in a
completely discharged battery, the current accepted by the battery is very low at first.
Later, as the charging current causes the electrolyte acid content to increase, the
charging current will likewise increase.
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2. STARTING SYSTEM OPERATION
The engine electrical system includes the battery, the ignition, the starter, the alternator, and all
the related wiring. Diagnostic tables will aid in troubleshooting system faults. When a fault is
traced to a particular component, refer to that component section of the service manual. The
starting system circuit consists of the battery, the starter motor, the ignition switch, and all the
related electrical wiring. All of these components are connected electrically.
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