GSIC - Global Service Information Center

# THERMOSTAT > INSPECTION

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1. INSPECT THERMOSTAT

HINT:

  The valve opening temperature is inscribed on the thermostat.

1. Immerse the thermostat in water and then gradually heat the water.

1. Check the valve opening temperature.

   Valve opening temperature:
     80 to 84°C (176 to 183°F)
   1. If the valve opening temperature is not within the specified range, replace the thermostat.

1. Check the valve lift.

   Valve lift:
     10 mm (0.39 in.) or more at 95°C (203°F)
   1. If the valve lift is not as specified, replace the thermostat.

1. Check that the valve is fully closed when the thermostat is below 40°C (104°F).

   1. If not fully closed, replace the thermostat.