17. Cooling and Lubrication System
z Check thermostat pellet for cracks
z Test the thermostat in the following steps:
z Pass a string between thermostat flange as
illustrated on the right;
z Immerse the thermostat in a beaker with water.
Make sure that the thermostat is in the suspended
position without contact to the vessel. Heat the
water by placing the beaker above a stove and
observe the temperature rise on a thermometer;
z Take the temperature reading from thermometer
when the thermostat valve opens.
Thermostat Valve Opening Temperature: 68-74℃
z Keep heating the water to raise the water
temperature.
z Just when the water temperature reaches the
specified value, the thermostat valve should have
been lifted by 3.5-4.5mm
Installation:
z Reverse the removal procedure for installation.
z Apply coolant to the rubber seal of thermostat.
z Install thermostat case. Tighten to the specified
torque:
Tightening Torque: 10N.m
Water Pump
z Removal and Disassembly
z Remove engine left side cover;
z Drain coolant (→11-10)
Note: Before draining coolant, check water pump for oil
or coolant leakage. In case of oil leakage, check the
water pump oil seal, O-ring. In case of coolant leakage,
check the water seal.
17-7
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