wsm Kubota L4100, Workshop Manual

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ENGINE L4100, WSM
1-S13
(EU)
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.
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(6) Radiator
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. 6 mm (0.236 in.).
4. If the measurement is not within the factory specifications,
replace the thermostat.
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Radiator Cap Air Leakage
CAUTION
• When removing the radiator cap, wait at least ten minutes
after the engine has stopped and cooled down. Otherwise,
hot water way gush out, scalding nearby people.
1. Set a radiator tester (Code No. 07909-31551) and an adaptor
(BANZAI Code No. RCT-2A-30S) on the radiator cap.
2. Apply the specified pressure 88 kPa (0.90 kgf/cm
2
, 12 psi), and
measure the time for the pressure to fall to 59 kPa (0.60 kgf/cm
2
,
8.6 psi).
3. If the measurement is less than the factory specification,
replace the radiator cap.
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(A) Good (B) Bad
Thermostat's valve
opening temperature
Factory specification
69.5 to 72.5 °C
157.1 to 162.5 °F
Temperature at which
thermostat completely
opens
Factory specification
85 °C
185 °F
Pressure falling time Factory specification
More than 10 seconds for
pressure fall
from 88 to 59 kPa
(from 0.90 to 0.60 kgf/cm,
from 12 to 8.6 psi)
KiSC issued 08, 2012 A