1 ENGINE
[4] COOLING SYSTEM
B083F248
The
cooling
system consists
of
a
radiator
(1),
centrifugal
water
pump
(4),
suction
fan
(2) and
thermostat (3).
The
water
is
cooled through the radiator core, and
the
fan set
behind
the
radiator
pulls cooling
air
through the core
to
improve cooling.
The
water
pump
sucks
the cooled water, forces
it
into
the cylinder block and draws
out
the
hot
water.
(1)
Water
Pump
B1700·B2100·B2400
WSM,11770
(1) Radiator
(2) Suction
Fan
(3) Thermostat
(4)
Water
Pump
(5) Cylinder Head
(6) Cylinder Block
6
Then
the
cooling
is
repeated.
Furthermore,
to
control
temperature
of
water,
a
thermostat
is
provided in the
system.
When the thermostat opens,
the water moves directly
to
radiator,
but
when
it
closes,
the
water
moves
toward
the
water
pump
through the
bypass
between thermostat and
water
pump.
The
opening temperature
of
thermostat
is
approx.
82°C
(180°F).
The
water pump
is
driven by the crankshaft via a
V-belt. Water cooled in the radiator
is
sucked
into
the water pump from its lower portion and
is
sent
from
the
center
of
the
water
pump
impeller
(4)
radially
outward
into
the
water
jacket
in
the
crankcase.
0087F022
(1)
Bearing
Unit
(2)
Water
Pump Body
(3) Mechanical Seal
(4)
Water
Pump
Impeller
1-M10
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