Summer temperatures are high, and tractors and drivers work in a high temperature environment and are prone to human-fatigue. If they are used improperly, tractor accidents and personal injuries can easily occur. Therefore, the following six issues should be noticed during summer driving. First, pay attention to prevent the body from overheating before entering the summer, should strengthen the engine cooling system inspection and maintenance, timely removal of cooling water tank, water jacket in the scale (scale remover with 25% hydrochloric acid solution), to ensure the smooth circulation of cooling water . During driving, pay attention to the reading of the water temperature meter and the water level of the cooling water in the tank. If the water level is lower than the specified water level, add the cooling water in time. But pay attention to the water tank "open pot" can not be added cold water, in order to prevent cracks caused by sudden quenching of the box, but should first open the tractor to cool down for a period of time, and opened the engine cover heat, until the water temperature in the box down Add about 70°C cooling water. When the body is overheated, it cannot be cooled by pouring cold water onto it. Second, pay attention to the correct use of oil in summer high temperatures, the engine should be used to select a higher freezing point of fuel and lubricants. In the summer in the south, fuel No. 10 or No. 0 and No. 14 lubricant are generally used. In the northern region, No. 0 fuel and No. 11 lubricant are generally used in summer. The use of high-condensation point oils in summer not only satisfies the requirements of the engine work, but also has a good economy. If you use the fuel with low condensation point to cause oil resistance in the fuel system and cause poor oil supply and power drop, you should stop immediately and pull the hand pump to make the oil in the oil line full. The use of low-condensation point lubricants in the summer due to high temperature and thinning, will seriously affect the lubrication effect, resulting in rapid body wear. Third, pay attention to prevent tire cracks when the temperature is high, the tire air expansion coefficient increases so that the tread hardness decreased, under heavy load or in the case of road stones and other sharp objects, it is easy to cause tire burst and induce tipping accidents. Therefore, when inflating tires in summer, the air pressure should be about 10% lower than in winter. Fourth, pay attention to prevent the battery from dehydration High temperature in summer, the moisture in the electrolyte in the battery evaporates quickly. If the battery plate exposes the liquid surface, the exposed part is easily vulcanized. Therefore, the level of the liquid level of the battery should be checked frequently in summer, and distilled water should be added in time to ensure normal liquid level and electrolyte density (summer should be no more than 1.24 g/cm3 in summer). V. Pay attention to prevent the brake from malfunctioning The brake fluid is easy to vaporize in the high temperature environment, thus forming an air resistance in the brake pipe. The brake shoe is also easy to ablate, causing the brake to malfunction. Therefore, in the summer, check and adjust the brake system in time, pay attention to adding or replacing the brake fluid, thoroughly drain the air in the brake system, and maintain the brake hose and brake shoe. If there is little or no effort to step on the brake pedal while driving, stop and check immediately. Do not continue driving until you have cleared the problem. If you find that the brake drum is hot, you should stop and cool in a cool place (can not use cold water method). ? 6, pay attention to prevent the driver fatigue sleepy and high heat stroke summer high temperatures, prone to cause lack of sleep. Therefore, the driver must ensure sufficient sleep before leaving the car. Do not drive while you are accustomed to sleep. If you feel tired during driving and appear snoring symptoms such as yawning and weakness, you should stop and rest for a while. In addition, in the event of dizziness, nausea, weakness and other symptoms of heatstroke, you should immediately stop and rest, wash your face with cold water, eat some drugs such as Dan Dan, Shi Dian, wait until the body back to normal before you can continue driving.