Thermostat Installation Components
1 - Thermostat; 2 - O-ring; 3 - Drainpipe; 4 - Upper radiator hose; 5 - heater hose; 6 - Heater tube; 7 - Copper washer; 8 - ECT sensor
1. Empty the cooling system (see Section Coolant replacement).
2. Remove the air intake sleeve and air cleaner cover assembly (see Section Removal and installation of components of an inlet air path).
3. Remove the upper radiator hose.
4. Remove the drain pipe and thermostat.
5. If necessary, remove the ECT sensor and heater tube.
6. To check the thermostat, lower it on a wire into a container of water so that it does not touch the walls of the container. When heating water, check the temperature of the beginning and end of the thermostat opening, as well as the travel of the thermostat valve. Compare the obtained values with the requirements Specifications and replace the thermostat if necessary.
7. Installation is carried out in the reverse order. Pay attention to the following points.
8. Make sure that new O-ring around its circumference is securely installed on the thermostat flange.
9. The thermostat and drain connection must be oriented as shown in the illustrations below.
Thermostat orientation
Drain nozzle orientation
10. When installing the heater tube, lubricate its threads with sealant.
11. If the ECT sensor was removed, replace its copper washer.