TE450 SM service manual.pdf - Hyosung

COOLING SYSTEM 5-6COOLING FAN THERMO-SWITCHThe cooling fan is secured behind the radiator by three bolts and is automatically controlled by the thermo-switch.The thermo-switch remains open when the temperature of the engine coolant is low, but closes when the temperaturereaches approximately 88℃ (190℉) setting the cooling fan in motion.◉ REMOVAL● Remove the front fender. (Refer to page 7-3)● Drain engine coolant. (Refer to page 2-12)● Disconnect the cooling fan thermo-switch leadwire coupler.● Remove the cooling fan thermo-switch 1 .1◉ INSPECTION● Check the thermo-switch closing or opening temperaturesby testing it at the bench as shown inthe figure.Connect the thermo-switch 1 to a circuit testerand place it in the OIL contained in a pan, which isplaced on a stove.● Heat the oil to raise its temperature slowly andread the column thermometer 2 when the switchcloses of opens.21OilCooling fan thermo-switchoperating temperatureStandardOFF → ONApprox. 95℃(203℉)ON → OFFApprox. 88℃(190℉)Multi circuit tester set : 09900-25008CAUTION Take special care when handling the thermoswitch.It may cause damage if it gets a sharp impact. Do not contact the cooling fan thermo-switch1 and the column thermometer 2 with a pan.