Author: Site Editor Publish Time: 2025-06-12 Origin: Site
Buying a used excavator is an investment, and routine maintenance is essential to ensure that this investment can bring you long-term returns. Compared with new machines, used excavators may have more wear and tear and potential problems, but with proper maintenance, they can still work efficiently and extend their service life.
1. Check the hydraulic system regularly
The hydraulic system is one of the core components of the excavator, responsible for operating functions such as the bucket and digging arm. Therefore, it is crucial to keep the hydraulic system in good working order. Check the oil level and oil quality of the hydraulic oil regularly to ensure that the hydraulic oil is clean and free of contaminants. When using hydraulic oil, choose the appropriate model and grade according to the manufacturer's recommendations. If the hydraulic oil is too dirty or the oil level is too low, it will affect the efficiency of the hydraulic system and even cause failure.
In addition, it is necessary to check whether there is a leak in the hydraulic pipeline, and repair the problem in time. Components such as hydraulic pumps, cylinders and valves are also key inspection objects to ensure that there is no abnormal noise, vibration or overheating to avoid large-scale failures.
2. Change the engine oil and filter regularly
The engine oil is the "life blood" of the engine. Its main function is to lubricate the various parts inside the engine, reduce friction, and extend the service life of the engine. Therefore, it is very important to change the engine oil and oil filter regularly. For second-hand excavators, the engine has been in use for a certain period of time, so it is even more necessary to keep the engine oil clean and sufficiently lubricated.
When changing the engine oil, be sure to choose a good quality engine oil and strictly follow the manufacturer's recommended replacement cycle. Usually, the engine oil needs to be changed every 1000 to 1500 working hours. The specific situation also needs to refer to the use environment and workload of the excavator.
3. Check the cooling system
The cooling system of a second-hand excavator is also very important, especially in hot weather. Check the radiator and coolant regularly to ensure that there are no leaks or damage. The coolant level should be kept within the normal range. Lack of coolant can cause the engine to overheat, and in severe cases, it may cause engine damage.
In addition, the appearance of the radiator should be cleaned regularly to prevent dirt, dust or debris from clogging the radiator and affecting the heat dissipation effect. For excavators that operate in high temperature environments for a long time, the cooling system may need to be checked more frequently to ensure that it is in the best condition.
4. Keep clean and reduce external wear
Used excavators usually have a history of use for a period of time, and the surface and parts may be worn or pollutants accumulated, so it is very important to keep them clean. Clean the outside of the excavator regularly, including the engine cover, body, crawler, bucket and other parts to remove dirt, oil and other debris. Especially the crawler parts, long-term work is prone to accumulate dirt or stones, affecting the flexibility of the crawler and the stability of the excavator.
5. Check the battery and electrical system regularly
The battery and electrical system are the guarantee for the normal operation of the excavator. For used excavators, the battery life may not be as good as that of new machines, so check the battery power and status regularly to ensure that there is no leakage, corrosion or poor contact. If you find any problems with the battery, you should replace it in time.
In addition, check the functions of electrical circuits, lights, instruments and other electrical components to ensure that the electrical system is stable and reliable. Especially in cold seasons, batteries are easily affected by low temperatures. Check the battery voltage regularly to ensure smooth startup.
Although second-hand excavators have a certain history of use, as long as they are properly maintained on a daily basis, they can still work efficiently and stably. As a user of the equipment, paying attention to these details regularly will provide better protection for your second-hand excavator and ensure long-term stable operation.
