1. Management of lubricating oil, hydraulic oil and gear oil. (1) Under harsh conditions (high temperature and high pressure), the oil used for engines and working devices will deteriorate. Therefore, even if the oil is not dirty, it should be replaced with new oil at the specified time as required. (2) Oil is equivalent to human blood, so be careful when using it to prevent impurities (such as water, metal particles, dust, etc. ) enter it. Most of the faults of excavators in operation are caused by impurities mixed in the oil. (3) It is forbidden to mix different brands and grades of oil. (4) Add oil according to the specified amount. Too little refueling in Ogawa will lead to bad phenomena. (5) When changing oil, the corresponding oil filter must be replaced at the same time. (6) In order to check the working state of the excavator, the oil quality should be analyzed regularly.

2. Diesel oil management. (1) Fuel pump is a particularly precise component. If diesel oil containing water or impurities is used, the fuel pump will be damaged and will not work normally. Therefore, when storing or filling diesel oil, special attention should be paid not to mix water or sundries. (2) Qualified brand diesel oil should be selected. Diesel oil may solidify at low temperature (especially at the temperature below-15℃), so the appropriate diesel oil should be selected according to the temperature. (3) To prevent moisture in the air from condensing into water in the fuel tank, the fuel tank should be filled with diesel oil after the work is completed. (4) Before starting the engine or after adding diesel oil 10 minutes, the sediment and water in the fuel tank should be discharged. (5) After the diesel oil is used up or the diesel oil filter is replaced, the air in the road must be exhausted.

3. Management of coolant. (1) River water contains a lot of calcium and other impurities. Therefore, if the machine uses river water, the scale will stick to the inner wall of the engine and radiator, resulting in poor heat exchange and overheating. Do not use undrinkable water as coolant. (2) The radiator of the new engine adopts the original antifreeze filled by the excavator manufacturer. This antifreeze can effectively prevent the cooling system from being corroded and can be used continuously for 2 years or 4,000 hours. Therefore, it can be used even in hot weather areas. (3) antifreeze is flammable, so be sure to pay attention to fireworks. (4) The ratio of antifreeze to water should be determined according to the ambient temperature. (5) Wait for the engine to cool before adding coolant. (6) If the coolant level is low, the engine will overheat and the air in the coolant will corrode the cooling system.

4. Oil management. (1) Adding grease can reduce the wear of the hinge and prevent the hinge from twisting. (2) When there is abnormal noise at any lubrication point or the movement of parts is inflexible, grease should be filled in time regardless of the lubrication cycle. (3) When filling grease, clean the extruded old grease. Sand or dirt stuck in grease will increase the wear of rotating parts, so be sure to pay attention to it.

5. Maintenance of oil filter. (1) The oil filter is a very important component, which can prevent impurities from entering the oil and gas path, thus reducing the occurrence of faults. The oil filter should be replaced regularly as needed. When using excavators in harsh conditions, the replacement cycle should be shortened according to the quality (sulfur content) of diesel oil used. (2) Never clean the oil filter (cylindrical) and use it again. Replace it with a new one. (3) When replacing the old oil filter, check whether there are metal particles and rubber crumbs adsorbed on the old filter element. If metal or rubber particles are found, please ask professional maintenance personnel for further inspection and treatment. (4) Don't open the box prematurely before using the oil filter.

6. Selection of diesel oil, coolant and lubricating oil. (1) Different brands of diesel should be selected according to different ambient temperatures. (2) The choice of other oils should be based on the environment and use. When the ambient temperature is high, oil with high viscosity should be selected; When the ambient temperature is low, oil with low viscosity should be selected. The viscosity of gear oil is relatively large to meet the needs of large transmission load. The viscosity of hydraulic oil is relatively small to reduce the flow resistance of liquid. (3) The choice of antifreeze, try to choose permanent antifreeze. If it cannot be used for some reason, antifreeze containing ethylene glycol should be used. When determining the mixing ratio, it is best to underestimate the temperature 10 or so.

7. If the excavator is used for a long time, it will cause natural wear, fatigue and looseness. Bad working environment is also an important factor to aggravate wear and tear. Therefore, regular inspection and maintenance of excavators can reduce the faults of excavators, prolong the service life of excavators, shorten the downtime of machines, improve work efficiency, greatly reduce operating costs, and make machines reach the best state.