Views: 27 Author: Site Editor Publish Time: 2026-04-06 Origin: Site
With the acceleration of infrastructure construction and urban renewal, excavators play an irreplaceable role in construction, roads, water conservancy and other projects. In particular, Komatsu PC78US series small hydraulic excavators are widely popular in the market due to their flexible operation, energy saving and high efficiency. At the same time, second-hand equipment has also become the first choice for many small and medium-sized engineering contractors and individual users due to its high cost performance and short delivery cycle.
This article will deeply analyze the advantages, purchase points, precautions and maintenance suggestions of Komatsu PC78US second-hand excavators from multiple angles to help you efficiently get the right equipment.
If you need to buy or wholesale, please contact Jiecheng second-hand excavator supplier (email: guo@machbro.com, website: http://www.machbro.com)
The Komatsu PC78US adopts a compact design and can be flexibly operated even in small construction spaces (such as municipal, subway, and road maintenance). Its tailless swing design is particularly suitable for urban construction.
Equipped with Komatsu's self-developed environmentally friendly engine, it has excellent fuel economy while maintaining strong operating efficiency.
The humanized cockpit design of PC78US is equipped with an LCD monitor, heating and cooling air conditioners and a multi-function control lever, which greatly improves the operator's work efficiency and comfort.
Komatsu brand equipment has a reliable structure, low failure rate, and a wide range of accessories channels. Even second-hand models have good market circulation value.
Compared with new equipment, second-hand machines are cheaper and can significantly reduce the initial investment of enterprises. It is an ideal choice for small engineering teams with limited budgets.
New machine procurement often faces production cycles, while second-hand equipment is basically spot and can be delivered quickly to meet the urgent needs of the project.
If you purchase from a professional second-hand excavator supplier, such as Jiecheng second-hand excavator supplier, the machine that has been fully prepared and tested can still run stably for many years.
Check whether there are large-area welding marks or cracks
Observe whether the oil cylinder, bucket, and connecting rod are seriously worn
Whether the chassis is flat and the track is tight
Whether the engine starts smoothly and the sound is abnormal
Whether the hydraulic oil is clear and free of impurities
Check whether the hydraulic cylinder moves smoothly and without jamming
Whether the control panel functions are complete and available
Each function key responds sensitively
Whether there are problems such as power outages and abnormal displays
Judge through trial operation, including: whether the actions such as excavation, turntable rotation, walking, and lifting are normal
Inspection items | Inspection points |
Hydraulic system | Oil circuit sealing, response speed |
Engine start | Is it easy to start, stable idling speed |
Chassis status | Is it balanced and crack-free |
Cab interior | Is it complete and the instrument is fault-free |
Travel performance | Is forward/reverse smooth |
Reliable suppliers can provide:
Clear maintenance records
Original purchase invoice
Detailed equipment inspection report
After-sales warranty and technical support
If you need a stable purchasing channel, it is recommended to contact experienced Jiecheng second-hand excavator suppliers, which can be contacted in the following ways:
Email: guo@machbro.com
Official website: http://www.machbro.com
The engine oil, hydraulic oil and filter element should be replaced within the first month after purchase
Check all lubrication points and add butter
Check the battery voltage and line connection
Follow the operating procedures to avoid overload
Check the hydraulic oil and coolant levels before starting the machine every day
Clean up the dirt and debris outside the machine in time
Time cycle | Maintenance items | Notes |
Every 100 hours | Replace the oil filter | It is recommended to use original accessories |
Every 500 hours | Check the engine belt, fan, and hydraulic pump | If they are aged, they need to be replaced |
Every 1000 hours | Comprehensive inspection of the hydraulic system | Including cylinders, pipelines, and main pumps |
Every 2000 hours | Maintenance of the entire vehicle lubrication system | Increase the service life of the whole machine |
At a time when the competition in the second-hand excavator market is becoming increasingly fierce, Komatsu PC78US has become the ideal choice for many buyers with its "compact, efficient, and stable" features. Choosing a professional and reliable supplier is the key to achieving high cost-effectiveness of equipment.
If you are looking for a Komatsu second-hand excavator with high cost-effectiveness and excellent vehicle condition, you may wish to contact Jiecheng second-hand excavator supplier, which specializes in providing one-stop services from equipment recommendation, testing to after-sales support.
Email: guo@machbro.com
Website: http://www.machbro.com
For more second-hand excavator model introductions, price analysis and purchase recommendations, please pay attention to our continuously updated industry information content!
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