Kubota WG1605-G-E3 Workshop Manual page 93

WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, WSM
CAUTION
• When removing the radiator cap, wait at least ten minutes after the engine has stopped and cooled down.
Otherwise, hot water may gush out, scalding nearby people.
Fan Belt Damage and Wear
1. Check the fan belt for damage.
2. If the fan belt is damaged, replace it.
3. Check if the fan belt is worn and sunk in the pulley groove.
4. If the fan belt is nearly worn out and deeply sunk in the pulley
groove, replace it.
(A) Good
Thermostat Valve Opening Temperature
1. Suspend the thermostat in the water by a string with its end
inserted between the valve and seat.
2. Heating the water gradually, read the temperature when the
valve opens and leaves the string.
3. Continue heating and read the temperature when the valve
opens approx. 8 mm (0.3 in.).
4. If the measurement is not within the factory specifications,
replace the thermostat.
Thermostat's valve
Factory specification
opening temperature
Temperature at which
thermostat completely Factory specification
opens
Radiator Cap Air Leakage
1. Set a radiator tester (1) and an adaptor (2) on the radiator cap.
2. Apply the specified pressure (90 kPa, 0.9 kgf/cm
measure the time for the pressure to fall to 60 kPa (0.6 kgf/cm
9 psi).
3. If the measurement is less than the factory specification,
replace the radiator cap.
Pressure falling time Factory specification
(1) Radiator Tester
1-S15
ENGINE
(B) Bad
9Y1210318GEG0002US0
69.5 to 72.5 °C
157.1 to 162.5 °F
85 °C
185 °F
9Y1210661ENS0009US0
9Y1210318ENS0018US0
2
, 10 psi), and
10 seconds or more
88 → 59 kPa
0.89 → 0.61 kgf/cm
12 → 8.6 psi
(2) Adaptor
9Y1210661ENS0010US0
KiSC issued 01, 2012 A
2
,
2