Cooling Fan Thermo-Switch - HYOSUNG TE 450 Service Manual

COOLING FAN THERMO-SWITCH

The 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 tempera-
ture reaches 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 lead
wire coupler.
● Remove the cooling fan thermo-switch ① .
◉ ◉ INSPECTION
● Check the thermo-switch closing or opening tem-
peratures by testing it at the bench as shown in
the figure.
Connect the thermo-switch ①
and place it in the OIL contained in a pan, which is
placed on a stove.
● Heat the oil to raise its temperature slowly and
read the column thermometer ②
closes of opens.
Cooling fan thermo-switch
operating temperature
OFF → → ON
ON → → OFF
Multi circuit tester set : 09900-25008
CAUTION
� � Take special care when handling the thermo-
switch.
It may cause damage if it gets a sharp impact.
� � Do not contact the cooling fan thermo-switch
① ① and the column thermometer ② ②
to a circuit tester
when the switch
Standard
Approx. 95 ℃ ℃
(203 ℉ ℉ )
Approx. 88 ℃ ℃
(190 ℉ ℉ )
with a pan.
②
①
COOLING SYSTEM 5-6
①
Oil