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THERMOSTAT:
The thermostat is of a bottom bypass configuration, has a
valve controlled by a special wax enclosed in a pellet. The
wax changes from solid to liquid as it is heated, involving
volumetric change for regulating the flow of coolant.
The changes in the valve position with varying coolant
temperatures regulate the flow rate of coolant into the
radiator and water pump (bypass side), thus controlling
coolant temperature
RADIATOR:
The radiator, with a tube-and-corrugated-fin type core, not
only cools the engine coolant but also separates vapour
from liquid water and regulates pressure in the cooling
system.
The radiator is of simple closed type, equipped with a
pressure cap. The reservoir tank is open to atmosphere. The
coolant overflowing from the radiator is therefore stored in
the reservoir full with coolant at all times.
RADIATOR PRESSURE CAP:
The pressure cap regulates the pressure in the cooling system. When the pressure builds up exceeding the
predetermined level, the pressure valve compresses the pressure spring relieving the excessive pressure to
the atmosphere. As the coolant temperature falls forming a vacuum in the radiator, the vent valve opens to
admit air into the radiator, thus preventing the radiator from being deformed by the vacuum.
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