How to protect Komatsu excavator from starting difficulties in winter?

It's getting colder and colder, and it's getting harder and harder to start the excavator. In this season, excavators are also prone to failure, so doing a good job of excavator maintenance in winter plays an important role in prolonging the service life of excavators. Make these preparations in advance to prevent and check the successful winter of the excavator.

1, the battery should be enough.

When the weather cools in winter, the battery capacity will also be affected. So if it is an old battery, it is easy to lose power too quickly. In this case, replace the new power supply as soon as possible to avoid the situation that there is no power when it is turned on. In addition, when the north enters the off-season of winter construction, the excavator may be parked for too long, resulting in the loss of battery power. In this case, you can remove the battery in advance, store it indoors, and install it in advance when you need to start working.

2. It is very important to prevent the oil circuit from freezing.

In addition to power loss, the biggest factor affecting engine starting in winter is fuel. It is recommended to use winter antifreeze fuel according to the local minimum temperature. If you want to park for a long time, try to park in a sheltered and sunny place. Fill the oil tank, let it stand for about an hour, open the drain hole at the bottom, and let out the excess water mixed in the diesel oil, so as to avoid the situation that the water in the diesel oil is separated out and the fuel circuit is frozen. Start the engine at regular intervals and check whether antifreeze and engine oil are sufficient.

3, the engine warm-up is not sloppy

As we all know, the principle of thermal expansion and cold contraction, after entering winter, some normal or slight leakage, failure and wear in summer suddenly become much more serious, so it is necessary to check whether there is any fracture or aging in various parts in time. Many dimensional changes, such as the increase of plunger clearance in diesel engine pump, the change of fuel injection diameter of injector, the change of valve clearance and the increase of piston ring and cylinder liner, are not conducive to engine starting in winter. Therefore, the excavator must do a good job of preheating before starting.

I have seen on the forum that organic friends use hot water to heat the engine when it is difficult to start it. This method may be effective, but it is not recommended, because there will be water droplets or steam to rust the parts above the engine, which may cause sparks, safety burns and other dangers.

4. Check the oil quality.

When the temperature drops, the viscosity of engine oil increases, and the resistance between moving parts increases, resulting in a decrease in the number of revolutions when the engine starts. At the same time, the wear of engine piston ring, cylinder liner and crankshaft connecting rod increases. Therefore, it is necessary to change the winter oil in time in winter to reduce the wear and load when the engine is started. In addition, such as hydraulic oil, you should also choose the appropriate model.

Of course, the hydraulic oil should also choose the appropriate model. For example, the 46 # antiwear hydraulic oil in the north is universal all year round, and the 68 # hydraulic oil can be used in the summer in the south. It is recommended to use size 46 in winter.

In addition, in addition to the necessary maintenance, the working conditions of excavators will be more complicated in winter construction, so remember to pay attention to safe driving and operation.