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Thermostat in engine cooling systemIt acts as a switch for the direction of movement of the coolant. With its help, the fluid changes the direction of motion. When the engine warms up, the liquid circulates through a small cooling circle, and when a certain temperature is reached, the radiator is also connected. On Chevrolet cars the thermostat is installed differently, depending on the model. On Chevrolet Lachetti, for example, it is installed over the transmission, as in the domestic Kalinas. And on Chevrolet Lanos will have to remove the timing belt to get to the thermostat, since it is installed under the belt. But the node function does not change from this. To replace the thermostat, you will need a set of keys and a screwdriver. A coolant tank is also useful, it should be at least seven liters.

Replacement of thermostat on Chevrolet Lanos

Perhaps the most difficult to remove the thermostat is preciselythis model. Disconnect the negative terminal immediately and drain the coolant. This is the preparation of the car for repair. It is not necessary to replace the entire thermostat, it is sufficient to remove the rubber sealing ring and the thermosensitive element. Only these parts are to be replaced, the thermostat housing does not wear out and does not fail. If only it was not accidentally damaged by something heavy. First remove the cover, which covers the timing belt. Note, you do not need to completely remove the belt, so there is no need to raise the right side. It is enough to remove the belt from the camshaft gear. Then you need to unscrew the bolts of the thermostat cover, and use a screwdriver to remove it from the cylinder block. Under the cover you will find a rubber ring, which must be changed, even if it is in perfect shape. It is necessary to remove the thermosensitive element from the cover and replace it with a new one.

Replacement of the thermostat on Chevrolet Lachetti

On this model, everything is a little easier, since there is noneeds to remove the timing belt. The thermostat is above the gearbox, as at Lada Kalina. The design of the thermostat is similar to that of Lanos. Preparation for repair includes the disconnection of the negative terminal from the battery, as well as the draining of the cooling liquid. Carry out repairs on a cooled engine, because the coolant has a high temperature. If hot fluid gets on the skin, it will cause injury. In the thermostat, a rubber ring and a temperature-sensitive element installed in the cover are subject to replacement. To check, the sensor must be placed in a container of water and gradually heated. The thermometer needs to control the temperature of the liquid. Of course, the scale of the thermometer should be up to 110-120 degrees Celsius, so household appliances can not be used. When the water boils, the thermostat must fully open. The difference between the initial position of the valve and the current one should be at least 0.7 centimeters.