Thermostat, Engine Cooling

INSPECTION

NOTICE: Use extreme care and do not damage or scratch machined aluminum surfaces. Coolant leaks will result.





1. In order to check if the thermostat valve is opening properly, perform the following test:
1.1. Completely submerge the thermostat in the glycol solution. The solution should be 11 degrees C (22 degrees F) above the temperature indicated on the thermostat valve.
1.2. Thoroughly agitate the solution. Under these conditions, the thermostat valve should open.
2. In order to check if the thermostat valve is closing properly, perform the following test:
2.1. Completely submerge the thermostat in the glycol solution. The solution should be 6 degrees C (10 degrees F) below the temperature indicated on the thermostat valve.
2.2. Thoroughly agitate the solution. Under these conditions, the thermostat valve should close completely.