First, external maintenance of refrigerated vehicles:

(1) Should be timely cleaning snow, remove with acid and corrosive substances of snow water, in order to avoid paint damage and premature rust.

（2） In winter, wash the vehicle with warm water instead of cold water. Especially after the engine is heated, cold water cleaning will quickly cool down, resulting in cracking of the paint on the hood surface. After washing, the door should be opened in time to dry the water channel to prevent the water from freezing at the crack of the door and freezing the door. When the window freezes, do not open or close it by force.

2、 Save oil

(i) Special oil should be changed in winter. To prevent the viscosity of ordinary lubricating oil from deteriorating due to the temperature drop, which leads to the difficulty of starting the car and serious accidents such as burning bush shaft.

(2) The freezing point of antifreeze should be about 10 below the area ° C and should be changed at least every two years. If water is added to the antifreeze, the antifreeze must be replaced.

3、 Electrical maintenance:

（1） Refrigerated vehicle consumes a lot of power in winter, so it is necessary to deal with the battery in time. Remove the oxide from the head of the battery stack and replenish the distilled water. If the temperature is too low, the capacity of the battery will be greatly reduced. It is better to charge the battery thoroughly. Generally, the service life of the battery is 2 to 3 years. If the battery is close to its service life, especially automatic parking, it is better to replace it in advance to prevent delay.

(2) When it is difficult to start the cold car, it should be restarted every 30 seconds or so to avoid continuous ignition, so as to prevent the starter and battery power failure.

（3） In winter, the temperature difference between the inside and outside of the car is large, and the windows are easy to fog, affecting the line of sight. Therefore, the wires must be kept in good condition in the windshield, side window outlet and rear window.

（4） Start the vehicle in winter, turn on the headlamp and other electrical equipment after the engine works normally; When parking, turn off the electrical appliances first, and then turn them off; Stop consuming as much electricity as possible, especially electric windows, headlights, sound and other high-power equipment.

Refrigerated truck chassis

（1） Rain, snow and salt water on roads after snow in winter. The chassis of the car is always handled directly by Heyu and snow. It rusts easily. The high-speed rotating tire can pour the high salinity snow water on the car chassis, making the chassis easy to rust. Therefore, the chassis in winter should be done before rust treatment, snow travel is not afraid of chassis damage.

Other matters needing attention

In winter, in addition to keeping the engine warm, the door should also be prevented from freezing, so as not to open during use. To do this, you can put a little lubricant into the hole in the door lock in advance and put a thin layer of grease on the seal around the door.

Car paint: in the early morning of winter, there are more dewdrops. The appearance of refrigerated car is usually very wet. If your car has obvious scratch, you should paint it in time to avoid moisture and rust.

Especially in winter, due to the relatively low temperature of the refrigerator car, the tires will have to compensate for the pressure to keep in the normal pressure range. At the same time, it should also check the tires for scratches, because the rubber is simple in winter and becomes more brittle.

In changing seasons, you'd better do a series of cosmetic maintenance for the appearance of your car, from cleaning and polishing to waxing, glass or coating. Maintenance of refrigerated automobile tires: tires play a negligible role in automobile safety. Refrigerator car engine compartment: in winter, the owner of the refrigerator car should often check the engine oil, brake fluid and antifreeze in the engine compartment to see if the engine oil is sufficient, whether it deteriorates, and whether it is in the replacement cycle. If there is a problem, it should be dealt with in time, otherwise it will bring you unsafe factors.

Refrigerator air inlet or air inlet grille, electric fan: often check the air inlet or air inlet grille, electric fan these parts are not debris. The oil is like the blood of a car. It must be replaced by a replacement cycle to ensure the smooth flow of oil.

Battery: in winter, the electrode connection of refrigerated truck battery is the most error prone place. When the driver checks, if green oxide is found at the junction of the electrode, it must be washed with boiling water. These green oxides will lead to the lack of power in the generator, making the battery in a state of power shortage, and even lead to battery obsolescence. Maybe it won't fire. Refrigerator car warm air pipe and electric fan: the temperature is low in winter, the car will appear frost, in this season, we should pay special attention to the wind under the windshield is not normal, the heat is not enough.

If there are debris, you can use a compressed air machine to blow away the dust. In other cases, the water gun can be used to clean the above parts from the inside out under engine cooling conditions. Refrigerated car: due to the hot and rainy summer, the carpet, glue and other places in the car breed a lot of bacteria. With the advent of winter, the windows are no longer often open, the air in the car will become turbid and smell, smell and bacteria will cause damage to human health. Therefore, in this season, you must thoroughly disinfect and clean your car indoors.

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