Engine Coolant Temperature Sensor - HYOSUNG Aquil GV650 Service Manual

5-7 COOLING SYSTEM
ENGINE COOLANT TEM-
PERATURE SENSOR
◉ REMOVAL
● Drain engine coolant. (Refer to page 2-24)
● Remove the seat. (Refer to page 7-1)
● Remove the fuel tank. (Refer to page 4-1)
● Remove the carburetor. (Refer to page 4-4)
● Disconnect the engine coolant temperature sensor
lead wire coupler.
● Place a rag under the sensor and remove the engine
◉ INSPECTION
● Check the engine coolant temperature by testing it at
the bench as shown in the figure. Connect the tem-
perature sensor ① to a circuit tester and place it in
the WATER contained in a pan, which is placed on a
stove.
● Heat the water to raise its temperature slowly and
read the column thermometer ② and the ohmmeter.
Temperature sensor specification
Temperature
60℃
85℃
110℃
125℃
Multi circuit tester set : 09900-25008
If the resistance noted to show infinity or too much dif-
ferent resistance value, replace the temperature sensor
with a new one.
◉ INSTALLATION
● Tighten the engine coolant temperature sensor to the
specified torque.

Engine coolant temperature sensor

● Pour engine coolant. (Refer to page 2-24)
● Bleed air from the cooling circuit. (Refer to page 2-25)
Standard resistance
Approx. 125 Ϊ
Approx. 48.5 Ϊ
Approx. 24 Ϊ
Approx. 15 Ϊ
: 18 N∙ ∙ m (1.8 kg∙ ∙ m)
②
①
CAUTION
● ● Take special care when handling the tempera-
ture sensor. It may cause damage if it gets a
sharp impact.
● ● Do not contact the engine coolant temperature
sensor ① ① and the column thermometer ② ② with
a pan.
①
Water