1 ENGINE
[3]
COOLING SYSTEM
B2410· B2710·
B2910 WSM,
12271
(1
) Radiator
(2)
Water Pump
(3) Cooling Fan
(4)
Thermostat
(5) Cylinder Head Water
Jacket
CD
(6)
Cylinder Block Water
Jacket
2r----r--++-+-14==1~
11900F10110
The cooling system consists of a radiator (1), a
centrifugal water pump (2), a cooling fan
(3)
and a
thermostat (4).
The water
is
cooled as
it
flows through the radiator
core, and the cooling air through the radiator core by
cooling fan.
The water pump receives water from the radiator or
from the cylinder head and force it into the cylinder
block.
(1) Water Pump
11900F10441
The thermostat opens or closes according to the
water temperature. When the water temperature
is
high,
the thermostat opens to allow the water to flow from the
cylinder head to the radiator. When the water
temperature
is
low, the thermostat close to flow the
water only to the water pump.
The opening temperature of the thermostat
is
approx.
82°C
(180
OF).
11900M10130
The water pump is driven with the fan drive pulley,
which is
on
the water pump shaft and driven
by
the
crankshaft with a belt.
The rotating impeller
(4)
in
the water pump receives
cool water from the bottom of the radiator and the water
jacket of cylinder head, and sends it into the water jacket
in
the cylinder block.
The mechanical seal (3) prevents the water from
entering the bearing (1).
(1)
Bearing Unit
(3)
Mechanical Seal
(2)
Water Pump Body
(4)
Water Pump Impeller
11900M10140
1-M10
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