System of cooling, heating and air conditioning
Engine cooling system works on the principle thermosiphon water pump and fan. Systems is sealed and pressurized working, which raises the boiling point of the coolant, thereby improving the cooling efficiency. The radiator cap is equipped with a check valve, avoid excessive deflection of the internal pressure in the system from the outside (in both directions).
Coolant thermal expansion is expelled from the radiator through the valve into the surge tank and the cooling of the engine after it stops again returns to the radiator. Coolant temperature control thermostat carries voskozapolnennogo type. The thermostat is located in a housing fixed to the engine block (3.0 L models) or in the inlet conduit (4.2 L models). In order to prevent corrosion of the cooling system should be sure to refuel with a mixture of water and anti-freeze containing corrosion additives.
A water pump is a V-shaped belt (shared with the generator) of the crankshaft pulley.
Thermostatic fan clutch filled silicone fluid whose viscosity varies considerably with the temperature, which can automatically adjust the fan speed depending on the engine speed and the airflow through the radiator. This reduces the loss of engine power and intensity of the background noise while moving at high speeds
The bimetallic spring in front of the clutch control valve that controls the degree of slip of the fan.
On vehicles with AT tanks built into the radiator cooling the transmission oil.