The coolant heated in the engine is circulated through the cooling system by an engine-driven
coolant pump. The coolant is cooled in the coils of the radiator and any overflow is received in
the expansion tank. The crankshaft-driven fan blows air through the radiator coils to aid cooling.
The thermostat automatically regulates engine temperature by regulating the flow of heated coolant
to the radiator.
Alternator. The alternator is belt-driven at a speed sufficient to provide the electrical energy for
the normal demands of the electrical system. Some of this energy is used to keep the batteries
Starter Motor. The starter motor is located on the left rear side of the engine. It is activated
by the start switch when the MASTER disconnect switch and power switch are on and the clutch
is fully depressed.
Batteries. The two lead-acid batteries are mounted in a battery box located on the left side
beneath the rear of the cab near the air reservoir tanks. The batteries provide electrical power to
start the engine and supply power to the auxiliary circuit when the engine is stopped. A
NATO-type slave receptacle is located next to the battery box to provide capability for a jump start
from an auxiliary source if the batteries are too low to start the engine.