Nissan excavators, though not as well-known globally as some other brands, have built a solid reputation, particularly in certain regions. Known for their reliability and efficient performance, these excavators are commonly used in construction and mining operations. However, like any machinery, they can encounter certain issues during their lifespan, particularly if they are not maintained properly.
Common Problems with Nissan Excavators

1. Engine Starting Issues
   A common issue faced by operators is difficulty starting the engine, especially in colder climates. This can be attributed to several factors, including poor fuel quality, clogged fuel filters, or issues with the battery or starter motor.
   
2. Hydraulic System Failures
   The hydraulic system, which powers most of the functions of the excavator, can sometimes fail due to leaks, worn-out seals, or a loss of hydraulic fluid. This can cause a significant decrease in the performance of the machine, especially in tasks requiring high lifting power.
   
3. Electrical Problems
   Electrical issues are also prevalent, with operators experiencing problems such as faulty sensors, malfunctioning gauges, or the machine failing to respond to controls. These issues are often linked to wiring problems or issues with the control panels.
   
4. Undercarriage Wear
   Like many construction machines, Nissan excavators can suffer from undercarriage wear due to constant movement over rough terrain. Tracks, rollers, and sprockets need to be regularly inspected and maintained to avoid costly repairs.
   
5. Overheating
   Overheating is another issue that can arise, especially in machines that have been working in high-temperature environments for extended periods. This can be caused by coolant leaks, clogged radiators, or malfunctioning cooling fans.
   

1. Regular Oil and Filter Changes
   Regular oil changes and replacing the engine filters is essential for keeping the engine running smoothly. Ensuring that the hydraulic oil and filter are also checked and replaced at regular intervals will prevent many common hydraulic system failures.
   
2. Monitor Fluid Levels
   Always check the hydraulic fluid, engine oil, and coolant levels before use. Low fluid levels can lead to overheating or damage to vital engine and hydraulic components.
   
3. Inspect the Tracks
   The undercarriage should be checked regularly for wear, and any components showing signs of wear or damage should be replaced. Keeping the tracks properly tensioned will extend their lifespan.
   
4. Electrical System Checks
   Periodic checks on the battery, wiring, and sensors are important to avoid electrical issues. It's recommended to keep the machine clean and free from dust and dirt, which can interfere with electrical connections.
   
5. Address Small Problems Early
   A small issue with the excavator can quickly escalate into a more significant problem if not addressed promptly. Ensure that any unusual sounds or poor performance are investigated immediately to prevent costly repairs later on.
   

The Nissan N-45 excavator is known for its reliable performance, but like all heavy machinery, it requires maintenance and occasional repairs to ensure it runs smoothly. One of the most common repair tasks involves the cylinder, which is crucial for the excavator’s hydraulic system. Replacing or repairing the cylinder seals is a necessary maintenance step to avoid leaks and improve efficiency. Here’s a detailed look into the cylinder repair kit for the Nissan N-45 excavator.
Cylinder Seal Kit for Nissan N-45 Excavator
The cylinder repair kit for the Nissan N-45 excavator includes a set of essential components designed to restore the hydraulic cylinders to optimal performance. This kit typically contains:

• Seals: The kit includes various seals such as o-rings, backup rings, and wipers. These seals are necessary for ensuring that the hydraulic fluid remains within the cylinder and that there are no leaks that could lead to a drop in pressure or inefficient operation.
  
• Piston Rings: These rings ensure that the piston inside the cylinder maintains a proper seal and allows for smooth movement within the bore.
  
• Gaskets: Gaskets prevent hydraulic fluid from leaking at the points where parts meet, providing a secure and efficient seal for the system.
  
• Wiper Seals: These seals are crucial for keeping dirt and debris from entering the cylinder and damaging the internal components.
  

Dazhou, located in Sichuan Province, is surrounded by mountains and has a population of less than 7 million. Despite its relatively small size, Dazhou is a hub for natural resource extraction, being home to the largest sulfur production base in Asia, as well as China’s biggest marine gas field and natural gas chemical park. Due to the rich mineral resources, many companies have flocked to Dazhou, and the need for urban infrastructure projects, such as housing, road construction, and land leveling, has been rapidly increasing. This, in turn, has led to a growing demand for large machinery.
Zhao Xuechun: A Veteran Excavator Operator
Zhao Xuechun, a native of Dazhou, is a seasoned professional with over 10 years of experience in the construction machinery industry. In 2001, he entered the business by purchasing a few second-hand mini excavators and offering rental services. By 2004, he was introduced to Doosan machinery, and he has since been a loyal customer, praising the efficiency, ease of operation, fuel savings, and affordable parts of Doosan products. He also appreciates their active after-sales service.
Over the years, Zhao’s business expanded, and his equipment transitioned from smaller machines to larger ones. His business now includes not only equipment rental but also independent contracting services. Zhao provides his operators with in-depth training to ensure the machines are used efficiently and with minimal downtime. His business has undertaken major projects such as the construction of the Dazhou hockey stadium, the land preparation for the Dazhou Mine Bureau office building, and the cleanup of land for PetroChina and Sinopec factories.
Why Zhao Chose the Doosan DX500LC Excavator
As Dazhou continues to develop, the demand for large-scale machinery to flatten mountains and excavate land has increased. With this in mind, when Doosan launched the DX500LC excavator, Zhao immediately decided to purchase one. This new addition was essential for his latest project, which involves land clearing for a factory site, requiring the removal of a hillside. The region's complex geology—composed mainly of limestone, dolomite, metamorphic rocks, and sandstone—calls for an excavator with high digging power and rock-breaking capabilities.
The Doosan DX500LC has exceeded Zhao’s expectations, successfully handling the mountainous terrain and tough rock excavation tasks. The excavator’s improved hydraulic system allows the machine to perform more coordinated and flexible movements, which is essential for large-scale earthworks. Additionally, the machine has been equipped with a soil breaker for optimal performance on Zhao’s project. Since its purchase, the DX500LC has been in use for over three months, significantly boosting the progress of the project.
SANY DX500LC Excavator Features & Performance
The DX500LC is an upgraded version of the DH500LC-7, designed to meet the demands of extreme mining environments in China. It combines the durability of the DH500LC-7 series with enhancements that make it more suitable for the diverse and challenging terrain of the Sichuan Basin. With its strong power, high productivity, and improved walking stability, the DX500LC is built to handle tough and fluctuating terrain conditions. It also performs well in wet conditions, minimizing the risk of landslides and other weather-related disruptions during operations.
Some key features of the Doosan DX500LC include:

• Hydraulic System: The advanced system ensures smooth operation, with better control over arm movements and optimized fuel efficiency.
  
• Fuel Efficiency: The DX500LC is more fuel-efficient than the DH500LC-7, making it suitable for areas with varying fuel quality. The machine operates effectively on domestic diesel that complies with China’s third-tier emission standards.
  
• Stability and Durability: The undercarriage has been improved for better walking stability and durability, allowing the machine to endure the rough terrain of mountainous areas and the constant rains of Sichuan.
  

As an editor in the construction machinery industry, I haven’t had extensive experience with concrete pump trucks. Most of the time, I would only see them from a distance, observing their graceful arcs on construction sites. However, I had the opportunity to learn more about the SANY SY5418THB 56E pump truck through an insightful discussion with driver Tian Liang. His expertise and passion for the equipment helped me understand pump trucks in a whole new way.
Tian Liang and the SANY SY5418THB 56E Concrete Pump Truck
Tian Liang, a 38-year-old native of Beijing, has been working with construction machinery for many years. He started as a driver for mobile cranes and later switched to concrete pumps. Currently, Tian is the dedicated driver for the SANY SY5418THB 56E concrete pump truck at Beijing Tianzhu Concrete Co., Ltd. He has been using this machine for over a year, with the pump time reaching 1,274 hours, a total pump volume of 73,483 cubic meters, and 740,132 pumping cycles.
Key Specifications of the SANY SY5418THB 56E Concrete Pump Truck

• Operational Parameters
  • Pumping Capacity: 170 m³/h
    
  • Maximum Pumping Height: 56 meters
    
  • Vehicle Weight: 41,460 kg
    
  • Maximum Speed: 80 km/h
    
  • Hydraulic System Pressure: 32 MPa
    
  • Theoretical Pumping Pressure: High Pressure 12 MPa, Low Pressure 8.3 MPa
    
• Boom System
  • Vertical Reach: 56 meters
    
  • Horizontal Reach: 51 meters
    
  • First Boom: Length 11,400 mm, Angle 90°
    
  • Second Boom: Length 9,230 mm, Angle 180°
    
  • Third Boom: Length 8,750 mm, Angle 180°
    
• Chassis
  • Chassis Model: Isuzu CYZ51Y
    
  • Axles: 4
    
  • Engine Model: 6WF1D
    
  • Engine Power: 287 kW
    
  • Maximum Speed: 80 km/h
    

• Efficient Performance: Tian mentions that the truck, when operating at full capacity, pumps 12 cubic meters of concrete every 7-8 minutes. The fuel consumption is relatively low, using only 0.7 liters of fuel per cubic meter of concrete.
  
• Comfortable Operation: The pump truck’s cabin is spacious, clean, and well-organized. Tian appreciates the seat's comfort, which is especially important for long shifts. The seat’s vibration-damping design makes it easier on his back and joints.
  
• Maintenance and After-Sales Service: Although the maintenance cost of a SANY pump truck is relatively high, Tian sees this as an investment in the machine's long-term performance. The after-sales service is highly responsive, and the staff are quick to resolve any issues, sometimes even working overnight to meet urgent needs.
  

1. Piston Head Design: Tian recommends changing the piston head from a straight mouth to a bell-mouth design to improve efficiency.
   
2. Boom and Distribution Valve Adjustment: He feels that the boom system and the electronic distribution valve need to be more precise. Inexperienced drivers might struggle with the initial setup. More detailed training should be provided to help new drivers get accustomed to the truck faster.
   
3. Transmission Noise: The noise from the transmission box is quite loud, which can be distracting during pumping operations. A reduction in noise would improve comfort.
   
4. Grease Injection System: The automatic grease injection system could use some improvement, especially in the delivery cylinders, which require more lubrication.
   
5. Remote Control Weight: Tian finds the remote control for the pump truck to be too heavy. After a few hours of use, the weight becomes a strain on the shoulder, making it uncomfortable.
   
6. Reduction Gearbox: Tian suggests using a double reduction gearbox for better control, especially for less experienced operators, as the current single reduction gearbox can be damaged easily.
   

When the name "Komatsu" is mentioned, many might think of it as a renowned brand in the construction machinery industry. In the world of construction equipment, Komatsu holds a significant position, comparable to a leading figure in a group, if not the top boss. Today, we explore the real-world experience of a seasoned operator with the Komatsu PC160LC-7, a popular model in Komatsu’s lineup.
Introduction and User Profile

• Excavator Model: Komatsu PC160LC-7
  
• Operating Hours: 500 hours
  
• Operator: Li Mingwei (pseudonym), 28 years old with 6 years of excavator experience
  
• Previous Machines: Hitachi large excavators; Komatsu small and medium-sized machines
  

• Fast Working Speed
  The most notable feature of the Komatsu PC160LC-7 for Li Mingwei is its fast working speed and high efficiency. Whether it's earthwork, stone handling, or demolition tasks, the machine handles them all with ease. Li Mingwei appreciates the machine's performance, especially in comparison to other models. The Komatsu CLSS hydraulic system makes operation smooth and responsive, and features like idle alert and automatic deceleration help optimize fuel consumption during routine operations.
  
• Fuel Consumption
  When it comes to fuel efficiency, Komatsu excavators are often praised for being fuel-efficient. Li Mingwei explains that fuel consumption depends on the work type and the quality of the fuel. For earthmoving tasks, the PC160LC-7 consumes about 120-130 liters of fuel for an 8-hour shift. For demolition work that involves heavy attachments like hydraulic shears and breakers, the fuel consumption increases to 140-150 liters per shift.
  
• Hydraulic and Engine Efficiency
  The Komatsu PC160LC-7 is equipped with the SAA4D102E-2 engine, delivering 82.4 kW (112 PS) at 2200 rpm/min, with a high fuel efficiency. The engine meets the EPA (Environmental Protection Agency) EU and Japan’s Stage II emissions standards, ensuring that the excavator is environmentally friendly. Furthermore, the machine offers four working modes to optimize performance and fuel consumption:
  
  1. A Mode (Fast Mode)
     
  2. E Mode (Economy Mode)
     
  3. B Mode (Breaker Mode)
     
  4. L Mode (Fine Operation Mode)
     
  In E Mode, the machine automatically adjusts engine speed, controlling fuel consumption and ensuring efficient operation. A feature worth noting is the idle alarm: if the engine idles for more than 5 minutes, the system prompts the operator to turn off the engine to avoid unnecessary fuel consumption. The automatic deceleration feature reduces engine speed when the control lever is in the neutral position, minimizing fuel waste.
  

• Build Quality and Stability
  Li Mingwei considers the overall build of the Komatsu PC160LC-7 to be sturdy. The machine's cabin is reinforced, offering protection in case of a rollover. For additional stability, especially during demolition tasks, the tracks on this machine have been widened, preventing the excavator from getting stuck on rooftops or other unstable surfaces.
  
• Cabin Comfort
  The cabin of the PC160LC-7 is significantly more spacious than the previous PC150-5, with a 30% increase in size. The operator refers to the cabin as “luxury class,” likening it to a business-class seat in an airplane. The cabin is fully sealed, providing excellent sound insulation, similar to that of a passenger car.
  
• Seat Comfort
  The seat features advanced vibration damping, making it highly comfortable for long hours of operation. The seat uses a high-damping spring and long-stroke design, which helps alleviate pressure on the operator's spine, reducing the risk of back problems. The seat also reclines, allowing the operator to rest during breaks.
  
• Air Conditioning and Controls
  Li Mingwei is satisfied with the air conditioning system, noting that it cools quickly and efficiently, with multiple adjustable air vents. The cabin also features a hydraulic lock lever with a smooth and user-friendly design. He also appreciates the machine’s sound system, which provides high-quality audio, making the workday more enjoyable.
  
• Maintenance and Accessibility
  The maintenance design of the Komatsu PC160LC-7 is also well thought out. The machine’s radiator, intercooler, and oil cooler are arranged in parallel for easy access. Daily maintenance tasks, such as cleaning and removing filters, are simple and do not require special tools. The machine also comes with a large tool compartment, allowing the operator to store essential tools, including the grease gun.
  

The Komatsu 220-8 excavator, a flagship model in Komatsu's product line, is well-known for its reliability and performance. Today, we'll hear from a seasoned user who shares their real-world experience with this machine, providing valuable insights into its strengths and weaknesses.
Purchase Background and Initial Use
In 2009, the user’s company took on a slope treatment project in Gansu. To meet the project’s needs, in addition to an existing Komatsu 240 excavator, they decided to purchase a Komatsu 220-8 directly from Xi’an. The machine weighs 23 tons and comes with a 1.3m³ bucket. Now, with 6278 operating hours on the clock, the machine still runs well, showing no signs of oil leakage. It’s worth mentioning that, in the first 5500 hours of operation, the machine was used exclusively for light tasks, with no stone work, thanks to a highly skilled operator who was meticulous with maintenance and care.
Advantages: High Efficiency and Adaptability

• Bucket and Work Efficiency
  Despite being labeled as the 220 model, the machine was fitted with a 1.3m³ bucket, 0.3m³ larger than the standard. The larger bucket did not affect its speed at all. In fact, the user found that the 220-8 was consistently faster than the Komatsu 240 with the same-sized bucket, making it highly efficient for loading tasks.
  
• Excellent Environmental Adaptability
  One notable example of the 220-8's adaptability came during the winter when the site was unable to source #10 diesel and had to use #0 diesel instead. While five excavators were in operation—two Komatsu machines and three domestic brands—the 220-8 was the only one that could consistently perform, even in cold temperatures. Despite using the same diesel, the 220-8 started up quickly and continued to operate, showcasing its excellent performance in extreme conditions.
  
• Cost-Effectiveness
  From a cost perspective, the Komatsu 220-8 is not only more affordable than the 240, but it also holds better resale value in the second-hand market. The fuel consumption is lower than the 240, yet the 220-8’s work performance is equally impressive, making it a great choice for users seeking efficiency and economy.
  

• Water Reservoir Problem
  One issue the user noted was the quick depletion of water in the machine's water reservoir. Every four to five days, it needed to be refilled with a bottle of mineral water. Despite multiple repairs, this issue persisted, making it a recurring problem.
  
• Air Conditioning and Door Seal Issues
  The air conditioning in the cab is not very effective, with low airflow and poor cooling performance. Even after recharging the refrigerant, the issue persisted. Additionally, after a rollover incident, the door seals no longer functioned properly, causing dirt to accumulate in the cab at the end of each workday. While this did not impact the machine’s ability to function, it did reduce overall comfort.
  

While tracked excavators are more common and well-known, wheeled excavators offer unique advantages, particularly when it comes to mobility. Unlike tracked models, wheeled excavators can easily relocate across different sites, saving on transportation costs and time. Among the wheeled excavator market, those in the 15-20 ton range are the most popular. Recently, we spoke to a 24-year-old operator from Liaocheng, Shandong, who has six years of driving experience and currently operates a Doosan DH150W-7. He shared his insights on this machine's performance on a construction site in Beijing.
Background: Diverse Experience
Despite his young age, the operator has extensive experience with various types of machinery. He started with a Kubota mini excavator, progressed to a 20-ton Hitachi tracked excavator, and now works with the Doosan DH150W-7 wheeled excavator. His experience with different brands and machine types gives him a well-rounded perspective on the unique characteristics of wheeled excavators.
Key Features of the Doosan DH150W-7
According to Doosan's official information, the DH150W-7 is designed for high mobility without damaging road surfaces. It combines the powerful, stable features of tracked excavators while being well-suited for navigating narrow roads. This makes it ideal for use in rugged terrain with low earth-moving requirements.
Best Hydraulic System
One of the standout features of the DH150W-7 is its flexible hydraulic system. The joystick controls are divided into two sections, allowing operators to balance oil flow according to the job at hand. This enables the boom, arm, and bucket to operate smoothly, quickly, and efficiently, offering true ease of control.
Low-Noise, High-Power Engine
The Doosan DH150W-7 is powered by a 200-horsepower engine, featuring an Air-to-Air Intercooler. It meets domestic emissions standards and is equipped with a new cooling fan and large muffler, making it fully compliant with European noise standards. This ensures that the engine is both powerful and environmentally friendly.
Comfortable Operating Environment
The DH150W-7 is designed for operator comfort with low noise, minimal vibration, a comfortable seat, and a spacious cabin. It also includes a climate control system suitable for year-round operations, a multi-function LCD dashboard, and ergonomically arranged buttons, all contributing to an excellent working environment.
Bucket Design
The bucket is equipped with hardened connection holes and wear-resistant materials on the lip and side plates, improving durability and performance.
Operator's Review
The operator shared his experiences after using the Doosan DH150W-7 for over three months, primarily on backfilling tasks on the construction site. The machine's hourly operating cost is around 1600 RMB per day.
Advantages

• Mobility: The wheeled excavator is much easier to move compared to tracked models, especially on large sites. The low fuel consumption is another key benefit, with the machine consuming approximately 500 RMB in fuel per shift.
  
• Efficiency: The DH150W-7 outperforms other brands on the site, with faster operation and more efficient movement.
  
• Reliability: The machine has not experienced any significant breakdowns during its use, which is a major advantage in ensuring continuous work on-site.
  

• Lower Efficiency Compared to Tracked Excavators: Tracked machines can move directly onto piles of dirt and start working, whereas wheeled excavators need to create a path before accessing the material. This makes the wheeled model slightly less efficient in certain situations.
  
• Tire Wear: The wheeled excavator tends to wear out tires faster, especially on rough roads. This can increase maintenance costs over time.
  
• Operator Fatigue: Compared to tracked excavators, wheeled machines require more frequent movement across the site, which can lead to operator fatigue, especially during long shifts.
  

• The bucket pin showed some wear due to a gap.
  
• There was a leakage in the high-pressure hydraulic hose, which was resolved by the owner replacing six hoses without involving after-sales support.
  

The LiuGong CLG836 is one of LiuGong's flagship models, highly trusted by numerous users. In this report, we present the experience of one such user, "Aguang," who purchased the LiuGong CLG836 for ¥204,000 in 2012. After nearly 200 hours of usage, the machine primarily handles earthmoving tasks at a brick factory, with operations at the steep mountain site where raw materials like clay and gravel are excavated.
Working Environment and Usage
The LiuGong CLG836 typically works in a high-load environment. It is used for approximately 1-2 hours a day to load dirt, fulfilling the brick factory's daily production requirements. In nearly a year of operation, the machine has accumulated only 193 hours, a testament to its durability and reliability in a high-intensity work environment. Despite the low operational hours, its performance remains outstanding thanks to regular maintenance.
Equipment Configuration and User Feedback

• Bucket and Tooth Design: The machine is equipped with a 1.7m³ bucket and features LiuGong’s unique rectangular pin design for bucket teeth. While this design allows for easier replacement, users have noted that it tends to loosen over time, reducing its practical durability.
  
• Bucket Wear Resistance Improvement: To enhance the bucket's wear resistance, Aguang welded a layer of wear-resistant rod onto the bucket edge. This modification has significantly increased its durability.
  
• Bucket and Boom: The bucket’s edge plates are relatively thin, requiring reinforcement by the user. The boom design is robust, with the extended version offering an unloading height of 3211mm, 50mm higher than the standard model. This makes it ideal for high-clearance operations.
  

• Steering System: The LiuGong CLG836 is equipped with a dual-cylinder fully hydraulic steering system, which is stable, though the steering wheel is somewhat heavy. There is slight oil leakage from the two hydraulic cylinders. The hydraulic system is well-organized, with hoses in the articulated parts that are not prone to friction wear. The widened articulation system makes the machine well-suited for heavy-duty mining and construction, providing excellent overload resistance. Users have suggested that LiuGong could improve the material used in the articulation plates for better durability.
  
• Grease Injection: The steering cylinders and articulation system are designed to make grease injection more convenient, with centralized grease fittings for easy maintenance.
  

• Transmission System: The LiuGong CLG836 uses the BS305 planetary transmission system, which provides two forward gears and one reverse gear. It also includes a low brake air pressure protection feature, ensuring the transmission automatically shifts to neutral when air pressure drops below 0.4MPa, improving safety during emergency stops.
  
• Drive Axle: The drive axle is custom-designed by LiuGong, ensuring high reliability and strength for heavy-duty applications.
  

• Braking System: The machine uses a hydraulic brake system with four-wheel disc brakes. The brake system uses LiuGong’s custom ZL50C2.2 wheel-edge brake calipers, which are located inside the tire steel rims to prevent mud and debris from damaging the brake components, improving both braking performance and lifespan. However, the brake system requires tire removal for maintenance.
  
• Cab and Operation: The cab provides a good working environment, with a clear view and comfortable seating, including a suspension seat for long working hours. However, users report that the handrails inside the cab are too high and positioned awkwardly, creating a potential safety hazard when entering the cab. The steering wheel is heavy, and there is a concern about the unclear gear positions, which could lead to accidental gear shifting and potential transmission damage.
  

• Engine: The LiuGong CLG836 is powered by the Weichai Deutz TD226B-6 turbocharged diesel engine, meeting EURO I emissions standards. The engine is easy to start in cold weather and provides strong power. However, users have noted slight oil leakage from the fuel pump, though this hasn’t affected the engine’s performance. After the first service, users found oil leakage from the engine’s oil return pipe due to overfilling during the oil change, but this was corrected.
  
• Fuel Consumption: The machine’s fuel consumption is relatively high, averaging 10 liters per hour, which is a point of concern. The fuel tank has a capacity of 150L but lacks a clear viewing window, making it difficult for users to check the fuel level.
  

• Cooling System: The cooling system is highly effective, with the radiator water temperature and torque converter oil temperature never exceeding 80°C, ensuring reliable performance during long hours of operation.
  
• Battery System: The battery box is located to the left of the counterweight and is secured with four screws. Users have applied grease to prevent rust, and it can be easily opened for maintenance. The machine is equipped with two 12V90AH maintenance-free dry batteries, which are known for their excellent quality.
  

• Greasing the parts of the bucket that are prone to sand and dirt entry.
  
• Draining water from the air tanks every 50 hours.
  
• Regularly lubricating the bucket pins and applying grease to the battery terminals to prevent corrosion.
  
• Ensuring that the radiator, engine oil, and hydraulic lines are checked periodically.
  

• Attractive design, clear visibility, and a comfortable driving environment.
  
• Reliable and durable brake system.
  
• Engine powered by the Weichai Deutz TD226B-6 turbocharged diesel engine, and the transmission and drive axle are designed for high strength and reliability.
  

• The bucket teeth design could be improved as they tend to loosen.
  
• The gap between the bucket pin and the boom is too wide, requiring additional protection.
  
• The bucket edge plates and articulation plates need reinforcement.
  
• The handrails inside the cab are positioned too high, posing a safety risk.
  
• The gear shift system could be clearer to avoid accidental gear shifting.
  

In 2004, the Lianjian Machinery Equipment Rental Company in Guangzhou purchased a second-hand Case 440HD skid steer loader, an opportunity that arose as part of the company's business expansion. At the time, Case’s reputation for military-grade quality equipment had already reached the company’s ears, and after a thorough inspection, they decided to trust the reliability of this well-regarded brand.
Proven Reliability: 8 Years and No Failures
This Case 440HD skid steer loader has now been in operation for over 8 years, accumulating 78,000 hours of usage. Despite being a second-hand machine with 20,000 operating hours on it, the loader has continued to perform flawlessly. Before purchasing, we had senior engineers thoroughly inspect the equipment to ensure its quality, and it passed with flying colors.
Even after years of high-intensity work, the Case 440HD loader has never needed any major repairs or part replacements, other than routine wear and tear and maintenance. The machine has proven that Case equipment maintains its durability and performance, even when purchased second-hand. Time has truly validated the quality of this machine, and it continues to perform like new.
Efficient Operation: The Perfect Partner in Road Work
Whenever the road milling machines roar to life on the highway, our Case 440HD skid steer loader quietly follows behind, diligently clearing the debris left behind. Like two close partners, it works seamlessly with the milling machine, ensuring that the road remains clean and clear. The loader’s powerful engine and precise movements avoid the need for additional equipment like street sweepers or water trucks, saving costs for the project.
The stability and reliability of the Case 440HD skid steer loader have been invaluable to our operations. It has worked tirelessly for hours, even through long shifts, without breaking down. Whether it's engine failures or issues with the sweeping drive motor, the loader has proven to be consistent, always performing its job with precision.
Versatile Attachments: A Multi-tasking Workhorse
In addition to its core duties, the Case 440HD skid steer loader is equipped with several versatile attachments, including a slant broom, bucket, and breaker, all of which can be quickly swapped out. Its maneuverability and high work efficiency make it adaptable to a wide range of tasks such as road sweeping, breaking, washing, snow clearing in the winter, and material handling.
The combination of quick-moving capabilities and adaptable attachments makes the Case 440HD loader a go-to choice for various construction operations. Whether for routine cleaning, material transport, or heavy-duty tasks, the loader handles it all with ease.
Market Leadership: Case Skid Steer Loader and Road Milling Machines as a Standard Pair
In our business, the Case 440HD skid steer loader paired with a road milling machine has become the preferred method in the market. To meet growing demand, we offer bundled rental packages of the Case 440HD with the road milling machines. This combination has proven to be a reliable income stream for the company, with the efficiency in construction operations also contributing to smoother highway traffic, benefiting the community.
Conclusion: Time and Quality Assurance with Case
Over the past eight years, the Case 440HD skid steer loader has not only helped us achieve operational efficiency but has also delivered significant economic benefits to our business. Its durable performance, reliability, and versatility make it an indispensable asset. Whether new or second-hand, Case equipment has consistently proven to be a sound investment that guarantees quality and long-term value.

In the bustling construction site of Qinzhou, Guangxi, a Caterpillar (Cat) 336D excavator fills a 20-cubic meter truck roughly every three minutes. Standing nearby with a satisfied look on his face is Xuan Yousheng, a well-known private enterprise owner in the engineering machinery industry. He is one of the most trusted names in the industry and a proud recipient of the Caterpillar Loyalty Award. This prestigious award recognizes customers who boost efficiency and accelerate success, showcasing the strong bond of mutual support, trust, and collaboration between Caterpillar, its dealer Xinchang Machinery Engineering Co. Ltd., and its customers.

A Turning Point: Discovering the Power of Caterpillar
Xuan’s journey with Caterpillar machines began only five years ago, when they were still a rare sight in Qinzhou. Back then, many people had to rent machinery from Nanning, the provincial capital. Xuan was no exception. However, in 2006, as Caterpillar’s dealer network expanded to Qinzhou through Xinchang, Xuan finally realized that he could conveniently purchase Cat excavators in his hometown. Excited by this opportunity, he bought his first Cat 320C excavator that very year. Little did he know, this machine would become the foundation of an unbreakable relationship with Caterpillar and Xinchang.

Saving a Million-Yuan Investment: The Night of the Flood
Every year between May and August, Guangxi faces its rainy season. On one such rainy evening, Xuan’s Cat 320C was working in the mountains. Due to the low-lying terrain, the river water began rising, and the excavator could not move to higher ground. Seeing his investment of over one million yuan in danger of being submerged, Xuan frantically called Xinchang for help.
Though it was already after hours, Xinchang responded immediately. Two technicians were dispatched and arrived at Xuan’s site in Qinzhou by 8 p.m. The heavy rain did not deter them from their mission. The technicians quickly started “rescuing” the machine, applying oil and protecting the engine to prevent water damage. By 2 a.m., they used another Cat excavator to pull Xuan’s Cat 320C out of the sand, saving his investment from the floodwaters.
The technicians were soaked to the bone and shivering from the cold, but Xuan was deeply moved by their dedication. Over time, he became friends with them, and their bond extended beyond work. This act of support from Xinchang was not an isolated case. The company’s repair teams often travel under harsh conditions to ensure their customers’ equipment keeps running smoothly, no matter the time or terrain.

Mutual Trust and Support Through Tough Times
After surviving the rainy season, Xuan faced yet another challenge—the global financial crisis of 2008. The sudden drop in commodity prices severely affected his business, as mineral prices halved. With monthly payments of over 60,000 yuan for the Cat excavators he had purchased on finance, combined with the wages of his workers, Xuan found himself in a cash flow crunch.
In this difficult situation, Xuan reached out to Xinchang and Caterpillar, requesting that they avoid stopping the machines during the busy construction period, despite his temporary inability to make payments on time. Caterpillar and Xinchang, known for their customer-centric services, understood his predicament and offered him flexible repayment options. While Xuan ultimately managed to make the payments on time, the humane support from Caterpillar and Xinchang gave him peace of mind during the crisis.
Through this challenging time, Xuan’s trust in Caterpillar and Xinchang only grew stronger. The excellent performance of Cat excavators and the efficient after-sales service from Xinchang played a significant role in sustaining his business during tough economic conditions.

Reaping Rewards: Timely Payments and Increased Efficiency
Having weathered the rainy season and the financial crisis, Xuan saw the rainbow after the storm. In the construction industry, it is not uncommon for contractors to face delays in receiving payment after completing projects. However, Xuan’s experience was different—his payments were almost always prompt.
The secret to this “luck” lay in the efficiency of his Cat excavators. Xuan proudly shared, “Because Cat excavators work quickly and efficiently, clients are always satisfied with the progress. They don’t want me to leave the job site, which naturally ensures timely payments.”
Though Cat excavators are priced higher than other brands, their superior quality, durability, and reliability mean fewer breakdowns and less downtime for repairs. As Xuan wisely pointed out, "The cost difference between Cat and other machines is negligible when you consider the costs incurred during repairs and delays." He further added, “Projects like the Three Gorges Dam demand machines that can work continuously without delays, and Cat machines are always the first choice because they can handle the toughest tasks.”

Growing Business: Expanding with Caterpillar
Relying on Caterpillar machinery, Xuan’s business continued to thrive. He became meticulous about fuel costs and efficiency, calculating, “If I spend 7,000 yuan on fuel, I can earn 13,000 yuan in work. If you spend 5,000 yuan on fuel, you only earn 10,000 yuan. Which is the better deal?”
Since his first purchase, Xuan has expanded his fleet by adding five more Cat excavators. He often encourages his friends and colleagues to buy Cat machines, citing their exceptional performance and the superior service from Xinchang.
The thriving demand for earthmoving services in Qinzhou has also contributed to Xuan’s success. From 2008 to the present, Qinzhou has seen a surge in large-scale infrastructure projects, including the construction of bonded port areas, industrial parks, and oil refineries. The increasing demand for earthmoving services has led many in the region to follow Xuan’s example and invest in Caterpillar machinery.
In fact, the sales of Caterpillar machines in Qinzhou doubled from 2008 to 2009, with over 60% of the excavators used in large projects, such as the Qinzhou Port Reclamation and PetroChina’s Refinery, being Caterpillar machines.

Conclusion: A Strong Partnership Built on Trust
Xuan Yousheng’s journey with Caterpillar has been one of mutual trust, shared growth, and continued success. From his first Cat 320C excavator to his expanding fleet of Cat machines, Xuan has witnessed firsthand the reliability and efficiency of Caterpillar equipment. With exceptional customer support from Xinchang, he has been able to overcome financial crises, expand his business, and ensure timely project completion.
As the construction market in Qinzhou continues to grow, Xuan remains a loyal advocate for Caterpillar, confident in the machines' ability to deliver the power, performance, and support necessary for long-term success.