THERMOSTAT INSPECTION

PROCEDURE

1. INSPECT THERMOSTAT

   

   Tip:

   The valve opening temperature is inscribed on the thermostat.

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

   2. Check the valve opening temperature of the thermostat.

      Standard valve opening temperature

      80 to 84°C (176 to 183°F)

      If the valve opening temperature is not as specified, replace the thermostat.

   3. 

      *1	Valve Lift

      Check the valve lift.

      Standard valve lift

      10 to 14 mm (0.394 to 0.551 in.) at 95°C (203°F)

      If the valve lift is not as specified, replace the thermostat.

   4. Check that the valve is fully closed when the thermostat is at a low temperature (below 77°C (171°F)).

      If not fully closed, replace the thermostat.