COOLING
SYSTEM
14263
FIG.
G-2—COOLING SYSTEM
COMPONENTS
V-6
ENGINE
1—
Radiator
Pressure Cap
2—
Hose
Clamp
3—
Radiator
Hose (Inlet-Upper)
4—
Radiator
Hose (Outlet-Lower) 5—
Bolt
6—
Water
Pump Assembly 7—
Cap
8—Thermostat
By-Pass Hose
g—Water Outlet
Elbow
10—
Gasket
11—
Thermostat
12—
Water
Pump Gasket
13—
Dowel
Pin
14—
Radiator
Shroud (Heavy Duty Cooling) 15—
Pulley
16—
Fan
Spacer
17—
Fan
and Alternator Belt
18—Fan
19—
Lockwasher
20—
Radiator
21—
Drain
Cock
From
these
main passages, the coolant flows around
the
full
length of each combustion chamber.
After
cooling the block, the coolant passes through
ports between the block and each cylinder head.
These
ports direct most of the coolant flow around the exhaust valve area to prevent hot exhaust
gases
from
overheating the exhaust ports.
From
the cylinder heads, the water passes into a
water
manifold between each of the heads and the
water
pump. If the thermostat is closed, the coolant
is ported back to the pump where it is recirculated
back
into the pump and into the engine. After the
coolant heats enough to open the thermostat, the coolant is directed from the water manifold through
a
hose
to the top of the radiator and then through
the radiator which acts as a heat exchanger to cool the fluid. The coolant is then ported through a
hose
from
the bottom of the radiator to the pump, which
recirculates
it back to the engine.
The
cooling system is pressurized. Operating pres
sure
is regulated by a relief valve in the radiator
cap. The
heater inlet
hose
is connected to a port on
the right bank cylinder head. The outlet
hose
is connected to the heater adapter tube on the water
pump.
c.
It is recommended when using water for coolant
that the cooling system be flushed and checked for leaks twice a year, preferably in the
fall
before
antifreeze is added and in the spring when the antifreeze is drained.
Reverse
flushing
will
aid greatly in removing rust 162
