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CAC Gasoline Engine Maintenance And Servicing Manual 51 【14】 Engine cooling system 1) Description for cooling system The cooling system is of pressure system. It When engine coolant temperature is low, water pump draws the coolant in the left water water room of radiator from the drain pipe When engine works under normal working temperature, coolant will expand. so the relief valve in the The electric fan operation is controlled by thermo switch installed in the right water room of radiator. When the contactpoint of thermo switch closes, the electric fan operates. Water temperature sensor is at the
—cooling system parameters: electric fan water pump engine capacity(L)3.3 diameter. 280mm diameter. of impeller 72mm operating voltage 9-16V pressure cap
RPM GradeⅠ 1500r/min operating pressure 160kPa Grade Ⅱ 2800r/min water temperature sensor front face area 0.202 ㎡ thermo switch radiation area 8.93 ㎡ operating temperature GradeⅠ95 ℃ thermostat GradeⅡ102±3℃ GradeⅠ≤84℃ resistanceΩ temperature℃ 70 159±21.3 90 86.7±11 110 52.3±6.3 124 28.2±2.8
+2 -3 hose hose warm wind heat hose hose pressure cap expansion tank hose engine
temperature regulator carrier with temperature water temperature sensor
coolant hose assembly hose assembly radiator thermo switch electric fan w a te r p u m p in le t Fig. 93 |