M2/M3 BFV: HULL POWER DIST SYSTEM - OD1606 - LESSON 1/TASK 1
battalion needs vehicles to provide fire support to the troops
already on the battlefield, and to transport new troops onto the
If the BFVs are not working, the troops on the
battlefield are without the close-in fire support that the BFV can
Additional troops, moving forward, will have to walk in
order to reach the battle. This increases their chances of being hit
while moving up and also creates time delays.
With the BFV
functioning properly, these troops could be at the battle in a matter
of minutes instead of hours and would not be as readily subjected to
It is the job of the 63T, BFV system mechanic to troubleshoot and
repair the hull electrical system on these vehicles. The purpose of
this subcourse is to teach the student the procedures used in
troubleshooting and repairing the hull power distribution system.
However, before the student can begin to learn these troubleshooting
procedures, he first must know the components that comprise this
In this task, the student will learn the components that
in replacing these components.
Vehicle Electrical System
The electrical system provides all electrical power for the vehicle.
The system operates on four wet cell batteries and includes charging,
regulating, and monitoring equipment. The batteries provide a normal
operating voltage of 27.5 volts with an amperage capability of 200
amps per hour.
The batteries supply the vehicle with electricity when the engine is
off. All electrical power is delivered through the distribution box.
Electrical power flows from the batteries through the distribution
box, cables, and wiring assemblies to the hull. The hull is a ground
for the electrical system.
The turret also receives power from the
hull power distribution system.
The dc generator recharges the batteries and supplies electricity
while the engine is running. The do generator has a 200 amp per hour
There are seven electrical subsystems that receive electrical power