A Komatsu excavator has some thorny problems such as abnormal noise, white smoke and speed loss
Maintenance Analysis on abnormal noise, white smoke and speed drop of Anshun Komatsu excavator:
The machine once failed to start when it emitted white smoke and lost speed seriously. Later, it was confirmed that the turbocharger was defective and the nut was loose, resulting in blade damage Therefore, the owner listened to the maintenance master's advice and replaced the supercharger. However, after 148 hours of use, the supercharger made abnormal noise, emitted white smoke, lost speed, and could not be started
The maintenance personnel carried out disassembly and inspection. It was obvious that the No. 1 piston was broken, the No. 1 connecting rod was broken, and the tiles and piston pins were severely worn to varying degrees
Infer possible causes:
1. It is certain that impurities are mixed in the engine oil, which leads to such serious wear
2. Poor engine oil (especially in cold weather, the lubrication effect itself is discounted and decreases a lot)
3. The oil filter element is blocked, and the oil filter element is seriously blocked, resulting in negligible effect and ability of filtering impurities
Maintenance method for abnormal noise, white smoke and speed drop of Anshun Komatsu excavator:
The treatment method of this machine is almost changed. After replacing the engine assembly, the test run is normal
Excavator maintenance details:
Use high-quality engine oil: with the continuous reduction of air temperature, the viscosity of engine oil will increase, thus increasing the resistance of the engine during operation This makes it difficult to start the machine cold in winter (so don't forget the warm-up work), and the wear caused by the engine during start-up is twice as much as usual. Therefore, we should replace the engine oil with high-quality, efficient and suitable for winter use. Here, we should especially remind you to use the pure engine oil provided by the manufacturer
Check the antifreeze solution: many users think that it is only necessary to fill the engine with antifreeze solution in the north, but it is not important in the south. Even if it occasionally causes freezing, they think that it can be thawed by watering with hot water or drying in the sun In fact, many cars can't normally dissipate heat in winter because the water is frozen, which causes damage to the water tank and even the engine. Therefore, filling the engine with antifreeze in winter is an indispensable part of engine maintenance
Engine cleaning: long term construction in harsh environment will produce harmful substances such as carbon and gum in the engine, which will slowly accumulate into oil sludge It will increase the fuel consumption of the engine, reduce the power, fail to meet the precise matching clearance requirements of the engine, and even cause damage to the engine in serious cases At this time, simply changing the engine oil can not keep the engine clean, so it is necessary to clean the engine. For the excavator, it is necessary to clean and maintain the engine within 500 hours
