THERMOSTAT INSPECTION

PROCEDURE


  1. INSPECT THERMOSTAT

    A01HFRNC02
    *a for Type A
    *b for Type B

    Tech Tips

    The valve opening temperature is inscribed on the thermostat.


    1. Check that the valve is fully closed when the thermostat is at low temperatures (below 75°C (167°F)).

      If it is not fully closed, replace the thermostat.

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

    3. Check the valve opening temperature of the thermostat.

      Valve opening temperature
      78 to 82°C (172 to 180°F)

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

    4. A01HJWGC02
      *a for Type A
      *b for Type B
      *c Valve Lift

      Check the valve lift.

      Standard Valve Lift
      Item Condition Specified Condition
      for Type A 93°C (199°F) 10 mm (0.394 in.) or more
      for Type B 95°C (203°F) 10 to 14 mm (0.394 to 0.551 in.)

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