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With the continuous development of engineering construction, used excavators, as indispensable heavy machinery equipment on construction sites, have become an indispensable productivity tool in various construction projects. Among the many brands of used excavators, the used Doosan DH300 is widely favored by construction companies for its excellent performance and durability. However, while enjoying its powerful functions, companies and individuals who purchase used Doosan DH300 excavators also need to pay attention to the maintenance and maintenance of the equipment to ensure its long-term stable and efficient operation. The following are some maintenance tips and strategies for used Doosan DH300 excavators to help you extend the service life of the equipment and improve work efficiency.
Regularly replace engine oil and filter element
The engine of the used Doosan DH300 excavator is one of its core power systems. A good engine oil and filter element replacement cycle is essential to extend the life of the engine. It is recommended to replace the engine oil and oil filter element every 250 to 500 hours. In high temperature environments or when the equipment is under heavy load, the replacement cycle can be appropriately shortened. Use original engine oil and high-quality filter elements to ensure lubrication and cleanliness inside the engine to prevent impurities from entering the engine and causing damage.
Clean the air filter
The function of the air filter is to filter the air entering the engine and ensure that the air inhaled by the engine is clean. If the air filter is clogged, the engine will have insufficient air intake, resulting in insufficient power, increased fuel consumption, and even possible damage to the engine. The air filter of the used Doosan DH300 excavator may accumulate a lot of dust due to long-term use, so it should be checked and cleaned regularly. If the filter element is worn or damaged, it should be replaced in time to avoid affecting the working efficiency of the engine.
Regularly check the hydraulic oil and hydraulic system
The hydraulic system is the core working system of the used excavator equipment, responsible for driving the action of the bucket, boom and other components. The quality of the hydraulic oil and the health of the hydraulic system directly affect the performance of the whole machine. Therefore, it is very important to regularly check the oil level and oil quality of the hydraulic oil. Under normal circumstances, the hydraulic oil should be replaced every 2000 hours, and the hydraulic oil filter element also needs to be cleaned or replaced regularly. Especially when purchasing a second-hand Doosan DH300 excavator, you should pay more attention to the sealing of the used Doosan DH300 excavator hydraulic system and whether the oil pipe is leaking, so as to avoid a decrease in work efficiency due to insufficient hydraulic oil.
Check the cooling system
When the excavator equipment is working, the engine will generate a lot of heat. If there is a problem with the cooling system, it may cause the engine to overheat, and even cause the engine to burn out in severe cases. Therefore, it is very important to keep the cooling system working properly. Check the level and quality of the coolant regularly to ensure that the water pump, radiator, fan and other components are fault-free. Especially in hot weather, the cooling system should be checked more frequently.
Timely replacement of crawler tracks and drive system maintenance
The crawler system of the used Doosan DH300 excavator bears the walking function of the equipment, so keeping the crawler system in good condition is the key to ensuring construction efficiency. Regularly check the wear and tightness of the crawler track. If the crawler track is too loose, it will cause unstable walking, and if it is too tight, it will increase the wear of the crawler track. Under normal circumstances, the crawler track needs to be checked every 500 hours, and attention should be paid to adjusting the tension of the crawler track to ensure the best operating condition of the crawler track. The maintenance of the drive system should not be ignored, including checking the lubrication of the travel motor and gears, and regularly replacing the gear oil and hydraulic oil.
Pay attention to the battery and electrical system
The battery and electrical system are important components of the excavator start-up and control. Check the battery power regularly to keep it fully charged to avoid the situation where it cannot start. At the same time, check whether the wiring of the electrical system is firm to avoid equipment failure caused by poor contact. Especially in the used Doosan DH300 excavator, the aging of the battery and electrical circuits may cause some minor faults, and regular maintenance can effectively avoid this problem.
Operator training and correct operation
In addition to hardware maintenance, correct operation is also an important strategy for maintaining excavators. Training operators to master the correct operating skills and avoid improper behaviors such as overloading and violent operation can significantly reduce the wear and tear of the used Doosan DH300 excavator and extend its service life. In addition, operators should regularly check the operating status of the equipment, report and handle problems in a timely manner, so as to reduce the failure rate of the equipment.
Regular professional inspection and maintenance
For the used Doosan DH300 excavator, it is recommended to send the equipment to a professional maintenance point for comprehensive inspection and maintenance on a regular basis. Professional technicians can use advanced testing equipment to discover potential hidden dangers and repair them in time to avoid large-scale repairs or downtime caused by the deterioration of problems. Regular professional inspections can not only improve the reliability of the equipment, but also keep the equipment in the best condition.
Summary
The maintenance and care of the high efficient used Doosan DH300 excavator is very important. Only through regular inspection, timely replacement of wearing parts, correct operation and professional maintenance can the equipment continue to operate stably under high-load working conditions and avoid construction delays and cost increases caused by equipment failure. Through the above maintenance skills and strategies, you can extend the service life of the used Doosan DH300 excavator, reduce maintenance costs, improve work efficiency, and ultimately achieve higher economic benefits.