5 things to check when buying a used Doosan DX300 excavator

In the construction, mining, engineering and other industries, excavators are essential and important equipment. And with a limited budget, buying a second-hand excavator has become the first choice for many companies. Doosan DX300 excavator is widely praised by users for its strong performance, durability and high cost performance. For friends who want to buy a second-hand Doosan DX300 excavator, how to choose a high-quality equipment is crucial. Here are five key points that need special attention when choosing to help you make a wise decision.

1.Check the condition of the engine and hydraulic system
The engine and hydraulic system are the heart and power source of the excavator, affecting the working efficiency and service life of the equipment. When buying a second-hand Doosan DX300, you need to:

Start the engine and observe whether it runs smoothly, whether there is any abnormal noise or abnormal smoke.
Check the color and cleanliness of the hydraulic system oil to confirm whether there is oil leakage, unstable oil pressure and other problems.
Make sure that the core components such as hydraulic pumps and valves are not obviously worn or damaged to ensure the working performance of the machine.

2.Check the wear of the crawler and chassis
The crawler and chassis are the basis for the excavator to walk in complex terrain, and it is very important to check their wear. In particular:

The thickness of the crawler plate and the tension of the chain. Excessive wear of the crawler will increase the operating cost and affect stability.

The crawler wheels, guide wheels, support wheels and other components on the chassis, their status directly affects the walking performance and operating efficiency of the equipment.

3.The use of hydraulic arms and buckets
The hydraulic arms and buckets of Doosan DX300 excavators are its main working parts and determine the operating capacity of the excavator. When checking these parts, you need to:

Make sure that the hydraulic arm has no cracks or excessive wear, and whether the movement is smooth and without abnormal noise.

Check the wear of the bucket to ensure that there is no serious deformation or cracks.

Observe the parts at the connection between the bucket and the hydraulic arm to ensure that there is no looseness or damage.

4.Check the electrical system and control system
The electrical system and control system are the “brains” of the excavator’s operation. Their health directly affects the overall operation of the machine:

Test the various indicators and controllers on the dashboard to confirm that all functions are normal.

Check whether the battery, wires and line connectors are corroded or have poor contact to prevent affecting the start-up and operation of the equipment.

5.Understand the equipment’s working history and maintenance records
When purchasing second-hand digging equipment, it is crucial to understand the equipment’s working history and maintenance records. Ensure:

Whether the equipment has undergone regular maintenance and whether there is a history of major failures.

Ask about the machine’s usage time (hour meter reading) and working environment to determine whether the equipment is overused or affected by harsh environments.

Buying a used Doosan DX300 excavator is a major investment decision. Choosing a high-quality equipment can greatly reduce the cost of subsequent maintenance and improve work efficiency. When purchasing, in addition to paying attention to the surface condition of the equipment, you should also check the equipment’s internal system and working history in detail to ensure that there are no major problems with the equipment.

To ensure that the performance of the second-hand Doosan DX300 excavator you purchase is reliable, mc-excavator conducts a detailed inspection before the transaction. If you have any questions, please feel free to contact our team of experts. We will provide you with full technical support and advice to help you choose the most suitable equipment.