Thermostat: Service and Repair

REMOVAL AND INSPECTION
1. Drain the coolant down to thermostat level or below.
2. Remove the coolant inlet fitting and gasket.
3. Remove the thermostat.





4. Immerse the thermostat in hot coolant to check proper valve opening temperature Replace if necessary.
Valve opening temperature 82°C (180°F)
Full opening temperature 95°C (203°F)
Valve lift (at full open) 8.5 mm (0.33 inch) or more

INSTALLATION
1. Check that the range of the thermostat is correctly seated in the socket of the thermostat housing.
2. Install a new gasket and the coolant inlet fitting.
3. Refill the system with clean coolant.