Snowy day excavator can't start, you must remember these six strokes

It’s beautiful in snowy days, but the bad weather, such as low temperature and icing, is a very painful working environment for our digging brothers! If you are still struggling in the construction front, it’s winter construction The machine must have some influence, then the next small series will come to give everyone support!

Hitachi excavator

1. Under low temperature conditions, the fuel number should be adjusted.

The fluidity of diesel will deteriorate when it is cold, and the viscosity will increase. The result is poor atomization and easy engine failure. Therefore, it is necessary to select the model of diesel according to the local minimum temperature in the current season. For example, 0# diesel is suitable for temperature. It is suitable for some mild climate areas in the south when it is used from 8 °C to 4 °C. In Xinjiang, Tibet, Heilongjiang and other regions, it is necessary to use -50# diesel oil, which is used for temperatures below -29 ° C to -44 ° C or lower. Use at temperature. If possible, diesel filters and oil filters need to be replaced more frequently. Komatsu spare parts

The basis for dividing the diesel fuel mark is the freezing point of diesel fuel. At present, the domestic application of light diesel oil is divided into 7 numbers according to the freezing point:

10# Diesel: suitable for high speed diesel engines with preheating equipment

5# Diesel: suitable for use when the temperature is above 8 °C

0# Diesel: Suitable for use at temperatures from 8°C to 4°C

-10# Diesel: Suitable for use at temperatures from 4 ° C to -5 ° C

-20# Diesel: Suitable for use at temperatures from -5 ° C to -14 ° C

-35# Diesel: Suitable for use at temperatures from -14 ° C to -29 ° C

-50# Diesel: Suitable for use at temperatures below -29 ° C to -44 ° C or below

It is recommended that you pay more attention to the weather forecast and choose different fuel grades according to the appropriate temperature. Excavator spare parts

Second, what is the reason why the excavator cannot start?

There are many reasons why the winter excavator can't be started. To eliminate the cause of the machine failure, there are the following common problems: 1. The battery is deficient, 2. The number of revolutions is not high, 3. The cooling water is frozen.

In response to these problems, we deal with them one by one. Let's start with the principle of the battery. The simple understanding is that the sulfate ions and water molecules in the battery collide to generate electric energy. The temperature in winter is low, the gap between sulfate ions and water molecules is large, and the moving speed is also changed. It's slow, it shows that the battery is not enough. So winter is also very important for the maintenance of the battery. Sometimes it can be found that even if the main power switch is turned off before leaving work, the battery power is still insufficient the next day, the safest method is Remove the battery after work and store it in a cool, dry place.

The low speed is mainly because there is no preheating. The normal preheating is divided into air preheating and combustion chamber glow plug heating preheating. The ordinary engine is air preheating. We can find the old excavator. There is no preheating function, and it is often necessary to spray the starting fluid to help preheat, but now many new machines have this function, usually in the cab start switch. When the excavator starts, it is generally preheated for 5-10 minutes, then Start excavator.

The cooling water is frozen and better solved. It can be avoided by draining the water before it is frozen. In the winter, we are used to adding antifreeze to the excavator spare parts, but it should be noted that it should not be mixed with water. Plus, otherwise the effect will be a big hit. In some places in the south, the temperature is not low, so the rain and snow days are so few days, then before the rain and snow, only the cooling water needs to be discharged, but it should be noted that the flameout Before running at idle speed, the temperature of the cooling water is reduced to below 60 °C. The water is not hot, and then the water is turned off. The water discharged in a bucket is placed in the cab. The next day is also possible. Of course, there is In the case of conditions, it is also a way to add proper hot water, but do not use hot water to pour it in other parts.

3. What should I do if I find that the wiper is frozen?

There is a small trick here. In many cases, the wiper and the glass are frozen together and cannot be swung normally. At this time, the glass can only be thawed. Before that, you may wish to take a newspaper or cotton cloth before the rain and snow. Wrapped up, even after snowing, it can be easily separated and does not affect the use. There is no verification of this method. Maybe this method is more suitable for small cars. When you have time, you can try it.

It is also a good way to open the heating and defogging. To know that the winter is started, the heating is the favorite of the operators! Generally, the air conditioner can find the heating switch. The bacteria and dust in the air in the cab are more and not easy to remove. Long-time heating is also a test for people's exhalation. According to this, not only must ventilation be used from time to time, but also the cab should be cleaned frequently, especially for heating and ventilation ducts.

Fourth, the operation of ice and snow should be slowed down to prevent rollover

The snow-covered or frozen surface is very slippery. Be careful when walking or operating the machine. Do not operate the lever suddenly. If the ground is frozen after snow, the ground will soften when the temperature rises. It will cause the machine to tip over, and pay special attention to it. Be careful not to leave the shoulder or get caught in the snow, otherwise the machine will be overturned or buried in the snow.

5. The engine and battery shutdown check should be carefully

It’s hard to finish the work in the snow, and the maintenance can not be ignored! For example, check the antifreeze liquid level, the oil level and the oil quality of the engine. If the antifreeze liquid level and the oil level are lower than the normal oil level, you need to add to Start normally after the normal. If the weather is particularly cold, the downtime of the excavator is very long, the coolant should be drained clean. At the same time, in order to prevent the battery from feeding, the battery must be removed and placed in a warm place for storage.

6. Why can't the excavator start with an open flame?

A while ago, in Shandong, the cold-cold fuel tank accidentally ignited the excavator accident, telling us that some things can not be done. Some people take the air filter off, use cotton yarn to ignite the diesel and make the firelight into the fire. Combustion start in the trachea, even using "fire-baked fuel tank", "smoke engine" and other methods, it seems possible, but in fact it hurts the engine, but burns the machine.

In addition, it is not advisable to release water too early or not to release cooling water. At this time, if it is not handled properly, the engine body may burst or shrink and crack. https://jnjmzm.wixsite.com/sdjygcjx