FE120 L4-4.9L DSL Turbo (2005)
Thermostat: Service and Repair
THERMOSTAT
Service standards (Unit: mm {in.})
Inspection procedure
Inspection: Thermostat
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Stir the water using a stirring rod to maintain an even water temperature in the container, then conduct the tests indicated below.
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If the measured values deviate from the standard value ranges, replace the thermostat.
1. Valve opening temperature
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Hold the thermostat with wire to keep it away from the heat source.
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Heat the water gradually to the valve opening temperature.
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Maintain this temperature for five minutes and make sure that the valve is completely open.
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Make sure that the valve closes completely when the water temperature drops below 65 °C {150 °F}.
2. Valve lift
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Heat the water to a temperature slightly higher than the valve opening temperature. Maintain this temperature for five minutes and measure
the valve lift.
Installation procedure
