Procedures

THERMOSTAT


Inspection


INSPECTION AFTER REMOVAL

Thermostat





- Place a thread (A) so that it is caught in the valves of thermostat
(1). Immerse fully in a container (B) filled with water. Heat while stirring.
- The valve opening temperature is the temperature at which the valve opens and falls from the thread.
- Continue heating. Check the full open valve lift amount.
- After checking the maximum valve lift amount, lower the water temperature and check the valve closing temperature.






- If out of the standard, replace thermostat.

INSPECTION AFTER INSTALLATION
- Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the radiator cap tester (commercial service tool). Inspection.
- Start and warm up the engine. Check visually that there is no leakage of engine coolant.