SSANGYONG KYRON 2010.01 Manual page 449

4) Water Pump
The belt-driven centrifugal water pump consists of an impeller, a drive shaft, and a belt pulley.
The impeller is supported by a completely sealed bearing.
The water pump is serviced as an assembly and, therefore, cannot be disassembled.
5) Thermostat
A wax pellet-type thermostat controls the flow of the engine coolant through the engine cooling
system. The thermostat is mounted in the thermostat housing to the front of the cylinder head.
The thermostat stops the flow of the engine coolant from the engine to the radiator to provide
faster warm-up, and to regulate the coolant temperature. The thermostat remains closed while
the engine coolant is cold, preventing circulation of the engine coolant through the radiator. At
this point, the engine coolant is allowed to circulate only throughout the heater core to warm it
quickly and evenly.
As the engine warms, the thermostat opens. This allows the engine coolant to flow through the
radiator wherethe heat is dissipated. This opening and closing of the thermostat permits enough
engine coolant to enter the radiator to keep the engine within proper engine temperature
operating limits.
The wax pellet in the thermostat is hermetically sealed in a metal case. The wax element of the
thermostat expands when it is heated and contracts when it is cooled.
As the vehicle is driven and the engine warms, the engine coolant temperature increases.
When the engine coolant reaches a specified temperature, the wax pellet element in the
thermostat expands and exerts pressure against the metal case, forcing the valve open. This
allows the engine coolant to flow through the engine cooling system and cool the engine.
As the wax pellet cools, the contraction allows a spring to close the valve.
The thermostat begins to open at 82°C(180
thermostat closes at 80°C (176°F).
6) Electric Cooling Fan
- Keep hands, tools, and clothing away from the engine cooling fans to help prevent
personal injury.
This fan is electric and can turn on even when the engine is not running.
- If a fan blade is bent or damaged in any way, no attempt should be made to repair or
reuse the damaged part. A bent or damaged fan assembly should always be replaced with
a new one to prevent possible injury.
°F) and is fully open at 95°C(203°F). The
ENGINE COOLING SYSTEM
04-7
2112-01
KYRON 2010.01