This completes part B.
Part C describes and illustrates the M113A3
charging system.
PART C - RECOGNITION OF THE M113A3 NEW CHARGING SYSTEM
1.
M113A3 Batteries and Charging System.
The M113A3 electrical system provides the power for the carrier. The
system operates on four wet cell batteries and includes charging,
regulating, and monitoring equipment. The batteries provide a normal
24 volts with an amperage capability of 200 amperes per hour.
The
batteries supply the carrier with electricity when the engine is not
running and are stored in the battery compartment at the left rear
side of the carrier personnel compartment.
The distribution box, located on the left side of the driver's
compartment,
distributes
all
electrical
power
the
APC
uses.
Electrical power flows from the batteries through the distribution
box, cables, and wiring assemblies to the electrical equipment, with
the hull serving as the ground for the electrical system.
An
alternator, with a 200 ampere per hour capacity, recharges the M113A3
batteries when the engine operates.
The alternator mounts on the
lower right side of the engine and is driven by a belt attached to
the engine crankshaft pulley.
A voltage regulator, located in the
driver's
compartment,
regulates
the
voltage
provided
by
the
alternator to the carrier's batteries (fig. 1-13).
You can easily troubleshoot the charging system by connecting the
STE/ICE to the DCA located in the driver's compartment. Figure 1-13
illustrates the location of the regulator, the power distribution
box, the batteries, the alternator, and the wiring harness.
2.
M113A2 Batteries and Charging System.
The M113A2 electrical system operates with two 24-volt batteries, a
100 or 200 ampere generator (depending on requirements), a generator
voltage regulator, and a master switch panel (power distribution).
The batteries are located in a compartment at the right rear portion
of the personnel compartment.
The generator mounts on the right rear portion of the engine and is
driven by a belt attached to a pulley on the transfer
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OD1712
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