Kubota M8540 Workshop Manual page 141

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M8540, M9540, WSM

Thermostat Valve Opening Temperature

1. Push down the thermostat valve and insert a string between the

valve and the valve seat.

2. Place the thermostat and a thermostat in a container with water

and gradually heat the water.

3. Hold the string to suspend the thermostat in the water. When the

water temperature rises, the thermostat valve will open, allowing

it to fall down from the string.

Read the temperature at this moment on the thermometer.

4. Continue heating the water and read the temperature when the

valve has risen by about 8 mm (0.315 in.).

5. If the measurement is not acceptable, replace the thermostat.

Thermostat's valve

Factory spec.

opening temperature

Temperature at which

thermostat completely

Factory spec.

74.5 to 78.5 °C

166.1 to 173.3 °F

KiSC issued 09, 2008 A

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