For many excavator operators, participating in a large-scale construction project is a major milestone in their career. Recently, one user shared their experience of their first big project, detailing the process of operating an excavator and the challenges of working on a complex job site. Below is a summary of their story.
1. Decision to Join a Large Project
The user recently decided to put their excavator to work on a large-scale construction project, marking their first experience with such a significant job. They chose to join the project mainly due to the desire for a challenge and the opportunity to expand their experience as an operator.

• Choosing the Project: The user explained that their decision to join the large project was carefully thought out. They wanted to improve their skills and face a more complex work environment.
  
• Challenges and Growth: Although the user was initially nervous about working on such a large site, they quickly realized it was a valuable opportunity to grow professionally and develop their skills in real-world conditions.
  

• Complex Work Environment: The user mentioned that the large-scale project presented a much more complicated environment than smaller jobs, with varying soil types, a larger work area, and tighter space constraints. They had to adjust their operating strategies to navigate these challenges.
  
• Precision Requirements: Compared to smaller projects, this job required more detailed and accurate operations. The user had to focus on every move, ensuring no mistakes were made.
  

• Communication: The user noted that through effective communication with other team members, tasks were completed more efficiently, and the workflow remained steady.
  
• Safety and Collaboration: Safety was a top priority, and working closely with other operators and workers helped the user become more safety-conscious and aware of hazards on the job site.
  

• Weather and Terrain Challenges: The user shared that operating in rainy, muddy conditions added difficulty. They had to adjust the digging angles and movement techniques to overcome these challenges.
  
• Problem-Solving Strategies: The user learned to stay calm under pressure and adapt their approach to ensure that the work continued despite environmental challenges.
  

• Skill Enhancement: The user feels they have made significant improvements in their operating skills, team coordination, and safety awareness.
  
• Future Goals: They plan to keep participating in larger projects and hope to continue refining their skills, aiming to become an even more professional and proficient excavator operator.
  

Buying a new excavator is an exciting milestone for any machinery enthusiast or professional operator. Recently, one user shared their experience of purchasing a Yanmar B50 excavator, detailing the delivery process, unboxing, and initial operational experience. Below is a summary of their experience.
1. Choosing and Purchasing the Excavator
The user carefully researched and compared different excavators before deciding on the Yanmar B50. This excavator was chosen for its high performance, reliability, and fuel efficiency, making it ideal for a range of small to medium-sized earth-moving tasks.

• Performance and Efficiency: The fuel economy, stability, and overall efficiency of the Yanmar B50 were key factors in the user's decision.
  
• Brand Reliability: The user noted that Yanmar has a strong reputation, especially for smaller equipment, known for its durability and dependability.
  

• Delivery Process: The delivery was seamless, and the excavator was safely unloaded and placed in the designated spot. The user mentioned that the machine arrived without any damage, with excellent packaging.
  
• Exterior Inspection: During unboxing, the user noted that the machine's surface was clean, without scratches or visible damage.
  

• Control Feel: The excavator’s control system was highly responsive, offering a noticeable improvement over the user's previous equipment. The operator's cabin was also very comfortable, making long hours of operation less tiring.
  
• Hydraulic System: The hydraulic system performed excellently, with smooth operation and quick response, handling various terrains with stability.
  

• Versatile Usage: The user intends to use the excavator for a variety of earth-moving tasks, including land leveling and foundation work.
  
• Future Upgrades: As the user gains more experience, they plan to add attachments and make upgrades to improve the excavator’s adaptability and productivity.
  

For many excavator owners, the moment when a new machine is delivered is both exciting and highly anticipated. Recently, one user shared their experience of receiving a new excavator, covering the delivery process, unboxing, and their initial impressions of the machine. Below is a summary of their experience.
1. Excavator Delivery and Shipping Experience
The user’s new excavator finally arrived, and the delivery process went smoothly. Upon arrival, the machine was well-packed and in excellent condition. The user noted that they were pleased with the delivery, as there were no signs of damage during transport.

• Shipping and Packaging: The excavator was delivered by a professional transport company, ensuring the machine’s stability and safety during transit. The user specifically mentioned that the packaging was excellent, and there were no damages or issues during shipping.
  
• Delivery Process: The delivery team was professional and ensured the excavator was safely unloaded and properly positioned.
  

• Exterior Check: The machine's appearance matched the description perfectly, with no scratches or marks. It looked brand new.
  
• Functionality Check: The user tested basic functions such as the engine, hydraulic system, and control system, confirming that everything was working well.
  

• Operational Experience: The user mentioned that the control system was highly responsive, offering a noticeable improvement over older equipment. The hydraulic system was smooth, handling complex work environments efficiently.
  
• Comfort: The seat was very comfortable, and the cabin had ample space. The placement of the control sticks and pedals was well-thought-out, making operation feel natural and reducing fatigue during long shifts.
  

• Testing and Usage: The user intends to conduct more extended work tests to ensure the machine meets their expectations under various operating conditions.
  
• Customizations and Upgrades: Based on real-world usage, the user plans to install additional attachments or upgrade the hydraulic system to improve overall performance.
  

For excavator owners and operators, building custom attachments can be a cost-effective way to meet specific work requirements and increase the versatility of their machinery. Many people have ventured into creating their own attachments for excavators, and sharing plans and ideas can help others in the community save time and money. Below is a discussion of the benefits and considerations when building DIY attachments for excavators.
1. Why Build Your Own Attachments?
Building your own excavator attachments can provide several advantages:

• Cost Savings: Purchasing pre-made attachments can be expensive, especially for specialized tools. By building your own, you can significantly reduce costs and tailor the design to your specific needs.
  
• Customization: DIY attachments allow for complete customization. Whether it’s modifying an existing attachment or creating a new design from scratch, you can ensure the attachment is perfectly suited to your task.
  
• Faster Turnaround: Having a unique attachment designed for your specific needs can save time when working on projects. You won’t have to wait for manufacturers or suppliers to provide the right tools.
  

• Buckets: Customizing buckets for specific tasks like digging in tough soils or material handling can be highly beneficial. Different designs and sizes of buckets can be created to match the job at hand.
  
• Hydraulic Thumbs: A hydraulic thumb attachment allows for better material handling, making it easier to grip and manipulate large objects. Many DIYers create their own hydraulic thumbs to fit their specific machine and work needs.
  
• Brush Cutters: A brush cutter is an essential attachment for clearing brush and small trees. With a DIY approach, operators can design brush cutters to fit their machine’s power and reach requirements.
  
• Rippers: A ripper attachment is ideal for breaking hard ground or digging through compacted soil. Building a custom ripper allows for optimizing the design for specific soil conditions.
  

• Material Strength: The materials used should be strong enough to withstand the forces exerted during operation. High-grade steel or hardened materials are often used to ensure durability.
  
• Weight: The attachment’s weight should be balanced with the excavator’s lifting and digging capabilities. Overly heavy attachments can affect the machine’s performance, while lighter designs may not handle heavy-duty tasks effectively.
  
• Hydraulic Compatibility: For hydraulic attachments, ensure that the design is compatible with the machine’s hydraulic system. Consider flow rates, pressure ratings, and the type of hydraulic connections.
  
• Safety: Always prioritize safety when designing attachments. Sharp edges, pinching points, and other hazards should be minimized or eliminated.
  

• Plans and Blueprints: Some people post detailed plans and blueprints for attachments they’ve built, providing step-by-step guides on construction and assembly.
  
• Videos and Tutorials: Video tutorials are extremely helpful for visual learners. Many users post detailed, easy-to-follow videos demonstrating how to build specific attachments from start to finish.
  

• Technical Skills: Building custom attachments requires a solid understanding of welding, fabrication, and machine mechanics. Not everyone has the skills or tools required for the job.
  
• Time and Effort: Depending on the complexity of the attachment, the process can take a considerable amount of time. It's important to be patient and thorough throughout the process.
  
• Cost of Materials: While building your own attachment can be cheaper than buying, the initial cost of high-quality materials can add up, especially for larger, more complex attachments.
  

Over time, excavator bucket tooth pins may become loose or fall out, especially during high-intensity earth-moving operations. The pins are crucial components that connect the bucket teeth to the bucket itself. If these pins become loose or are knocked out, it can directly impact operational efficiency and safety. Below are steps and methods to resolve the issue of bucket tooth pin knock-out.
1. Causes of Pin Knock-Out
The issue of bucket tooth pins knocking out is usually caused by several factors:

• Misalignment of Bucket Teeth and Bucket: If the bucket teeth and bucket do not align properly, it may cause uneven pressure on the pins, leading to looseness or dislodgement.
  
• Frequent High-Load Operations: Heavy-duty operations result in significant impacts on the bucket teeth. Continuous vibrations and shock loads may cause the pins to become loose or knocked out.
  
• Poor Quality Pins: If the pins used are of substandard quality or have manufacturing defects, they may not be able to withstand the pressure during work, leading to loosening or dislodgement.
  
• Improper Installation: Incorrect installation of the pins, or failure to use the proper tools to secure them, may lead to looseness or dislodgement.
  

• Check the Alignment of Bucket Teeth and Bucket: Start by ensuring that the bucket teeth fit properly with the bucket. If there’s a mismatch, replace the teeth or bucket with the correct components to ensure proper fit and pressure handling.
  
• Inspect the Quality of Pins: Check the existing pins for defects or wear. If the pins are substandard or damaged, replace them with high-strength pins that meet the necessary specifications.
  
• Check the Installation of Bucket Teeth: Ensure that the bucket teeth are installed correctly and that the pins are properly secured. If there is an installation issue, reinstall the parts and make sure the pins are tightly fixed.
  
• Use Appropriate Tools for Installation: When installing the pins, use proper tools (such as hydraulic presses or heating tools) to ensure that the pins are installed securely and can withstand the forces during operations.
  

• Regular Inspection of Bucket Teeth and Pins: Regularly check the wear and tear on bucket teeth and pins. Replace any damaged components in a timely manner.
  
• Avoid Overloading: Try to avoid excessive load operations, especially if the bucket teeth and bucket are mismatched. Overloading can easily cause pin loosening.
  
• Use High-Quality Pins: Always use pins that meet quality standards. Avoid using inferior parts that may wear out quickly or fail under pressure.
  
• Proper Pin Installation: Ensure that pins are installed using the correct tools and are tightened properly. Avoid improper installation, which can cause loosening over time.
  

The Kobelco 905 Excavator is a powerful and efficient machine, but over time, some users may encounter issues with the steering and brake system. These problems can cause difficulty in steering, ineffective braking, or even complete failure to stop, which affects both operational efficiency and safety. Below is a guide to troubleshooting and resolving steering and brake issues on the Kobelco 905 Excavator.
1. Common Steering and Brake Problems
Steering and brake issues often present as:

• Brake Failure: The brakes do not engage properly, making it difficult to stop the machine safely.
  
• Difficulty Steering: The steering becomes stiff or unresponsive, making maneuvering the machine challenging.
  
• Uneven Braking: The braking force is inconsistent, with one side potentially weaker or entirely ineffective.
  

• Hydraulic System Failure: The steering and braking systems rely on hydraulic oil for operation. If the hydraulic oil is contaminated, the hydraulic pump is faulty, or the oil pressure is too low, it can result in unresponsive brakes and steering.
  
• Worn Brake Pads: Over time, the brake pads can wear down, leading to reduced braking efficiency and slower response.
  
• Air in the Hydraulic System: Air in the hydraulic lines can cause unstable oil pressure, which affects the brakes and steering.
  
• Faulty Hydraulic Valves: Malfunctions or leaks in the hydraulic control valves can obstruct the flow of hydraulic fluid, disrupting the brake and steering functions.
  

• Check Hydraulic Oil: Start by inspecting the hydraulic oil quality and level. If the oil is contaminated or low, replace it and clean the hydraulic lines.
  
• Inspect the Hydraulic Pump: Verify the operation of the hydraulic pump to ensure it is supplying adequate oil pressure. If the pump is malfunctioning, it should be repaired or replaced.
  
• Check Brake Pads: Examine the brake pads for wear. If they are significantly worn down, replace them to restore braking effectiveness.
  
• Examine Hydraulic Valves: Inspect the hydraulic control valves for leaks or malfunction. If any faults are found, repair or replace the valves.
  
• Check for Air in the System: Ensure no air has entered the hydraulic system. If air is present, bleed the system and refill with hydraulic oil to stabilize oil pressure.
  

• Replace Hydraulic Oil: If the oil is contaminated, replace it with fresh hydraulic oil and clean the entire hydraulic system.
  
• Replace Brake Pads: If the brake pads are worn, replace them with new ones to ensure proper braking.
  
• Repair or Replace Hydraulic Pump and Valves: If the hydraulic pump or control valves are faulty, have them professionally repaired or replaced.
  
• Remove Air from the System: Purge any air from the hydraulic system to restore stable oil pressure.
  

• Regularly Check Hydraulic Oil: Periodically inspect and replace the hydraulic oil to ensure the hydraulic system functions properly.
  
• Routine Brake System Inspections: Regularly check the brake pads for wear and replace them when necessary.
  
• Avoid Overloading: Avoid prolonged high-load operation, as this can cause excessive wear on the steering and braking systems.
  
• Periodic Hydraulic System Checks: Regularly check the hydraulic components for leaks and ensure smooth oil flow.
  

The Kobelco SK025 is a widely used mini excavator, known for its efficient performance and compact design, making it ideal for tasks in confined spaces. However, some users have encountered an issue where the travel motor becomes jammed, preventing the machine from moving or causing it to stop unexpectedly during operation. Below are troubleshooting steps and solutions for resolving this issue.
1. Causes of Travel Motor Jamming
The travel motor jamming issue is often related to hydraulic system failures, oil blockages, or internal component wear. When certain parts of the hydraulic system malfunction, the travel motor may not operate properly. Common causes include:

• Hydraulic Oil Contamination: Contaminants in the hydraulic oil can obstruct smooth operation, impacting the performance of the travel motor.
  
• Hydraulic Pump Failure: If the hydraulic pump fails, it may not supply enough oil flow to the travel motor, causing it to malfunction.
  
• Internal Wear in the Motor: Prolonged use can cause internal components of the travel motor (e.g., gears, bearings) to wear out, potentially leading to jamming.
  

• Check Hydraulic Oil: Start by checking the oil level and oil quality. If the oil is contaminated or the oil level is low, the hydraulic system may not function properly. It is recommended to replace the hydraulic oil and clean the oil lines.
  
• Inspect the Hydraulic Pump: Check the hydraulic pump’s operation to ensure it’s providing the correct oil flow. If the pump is malfunctioning, it should be repaired or replaced.
  
• Examine the Motor: Disassemble the travel motor and inspect its internal components, such as gears and bearings, for wear or damage. If damaged components are found, replace them promptly.
  
• Inspect Control Valve: Ensure that the control valve is functioning correctly. A stuck or faulty valve may cause improper oil flow, leading to jamming of the travel motor.
  

• Clean and Replace Hydraulic Oil: If the hydraulic oil is contaminated, replace it and clean the oil lines to restore the system’s proper functioning.
  
• Repair or Replace the Hydraulic Pump: If the hydraulic pump is defective, it is best to either repair it or replace it with a new one.
  
• Replace Worn Components: If the internal components of the travel motor, such as gears or bearings, are worn out, replace the damaged parts to restore smooth operation.
  
• Replace Control Valve: If the control valve is faulty, it will need to be repaired or replaced to ensure proper oil flow.
  

• Regular Hydraulic Oil Changes: Regularly check and replace the hydraulic oil to keep the system clean and prevent the accumulation of contaminants.
  
• Routine Hydraulic System Inspections: Periodically check the hydraulic pump, motor, and control valves for any signs of wear or malfunction. Address any potential issues before they escalate.
  
• Avoid Overloading the Machine: Avoid prolonged operation under high load conditions to reduce wear on the travel motor and hydraulic system components.
  

The Kobelco SK135 is a powerful and efficient mid-sized crawler excavator, widely used in construction, civil engineering, and mining applications. Known for its excellent performance, robust power, and excellent handling, it has become a popular choice for a variety of projects. Below is a review based on user feedback and experiences with the Kobelco SK135 excavator.
1. Performance and Power
The Kobelco SK135 is equipped with a powerful engine that provides stable power output, meeting the demands of various earthmoving and heavy digging tasks. Its hydraulic system is also excellently designed, ensuring stable operation and sufficient power support in complex work environments. Many users report that this excavator can easily handle most working environments, from everyday construction operations to complex earth excavation tasks.
2. Operation and Handling
The SK135 is known for its excellent operational control. The hydraulic system responds quickly, and the joystick controls are comfortable, allowing for efficient and precise work. The cabin is spacious with excellent visibility, enabling operators to easily manage all of the machine’s functions. The operation interface is user-friendly, making it easy for operators with varying levels of experience to quickly get up to speed and work efficiently.
3. Comfort and User-Friendly Design
Kobelco has paid significant attention to comfort in the SK135’s cabin design. The seat is adjustable in multiple directions to minimize physical strain during long working hours. Additionally, the air conditioning system, shock-absorbing seat, and low noise levels further enhance the operator’s comfort. For operators working long shifts, these ergonomic features contribute to higher efficiency and overall comfort.
4. Fuel Efficiency
The Kobelco SK135 delivers good fuel efficiency for a mid-sized excavator. Despite its size, its energy-efficient design helps reduce fuel consumption, saving operational costs over time. Many users report that even under heavy load, fuel consumption remains relatively low.
5. Maintenance and Upkeep
Maintenance for the SK135 is relatively straightforward, with long service intervals and easy access to components. Regular maintenance tasks include hydraulic oil and filter changes, as well as engine and hydraulic system checks. The availability of OEM parts and an extensive repair network ensure reliable long-term operation. With proper maintenance, the SK135 remains in high-performing condition over time.
6. Drawbacks and Areas for Improvement
While the SK135 excels in many areas, there are some user-reported drawbacks. Some users noted that the machine has a slower startup time, especially under heavy load, with the engine taking longer to reach full operating speed. Although the machine performs well in most conditions, a few users also observed that its fuel efficiency could be affected in extreme operating environments.
Conclusion
Overall, the Kobelco SK135 is a powerful, efficient, and easy-to-operate mid-sized crawler excavator, ideal for various construction and earthmoving projects. Its excellent handling, comfortable operating environment, and good fuel efficiency make it a top choice for many medium to large-scale projects. Despite a few minor drawbacks, the SK135 remains a reliable and high-performing excavator capable of handling demanding work conditions.

The Kobelco SK25SR is a compact and efficient mini excavator widely used in urban construction, landscaping, and operations in confined spaces. Its compact design and powerful performance make it a top choice for many users. Below is a review based on feedback and experiences with the Kobelco SK25SR excavator.
1. Performance and Power
The Kobelco SK25SR is equipped with a highly efficient engine that provides strong power to meet various earthmoving, material handling, and landscaping needs. Many users report that, despite being a small machine, its hydraulic system performs exceptionally well, handling heavy-duty tasks and complex environments with ease.
2. Compact Design and Maneuverability
The SK25SR features a compact design, making it ideal for working in narrow spaces, particularly in urban environments, tight construction sites, and roadwork. Its small turning radius allows for easy maneuverability, enabling the machine to work efficiently in confined spaces. This flexibility makes the SK25SR suitable for a wide range of complex environments.
3. Operation and Comfort
The cabin of the SK25SR is designed for comfort, offering a spacious interior and excellent visibility. The layout of the control sticks and pedals is ergonomic, making operation simple and comfortable. The responsive control system allows operators to easily perform digging, material handling, and other tasks. The precise hydraulic control further enhances the machine’s efficiency and stability, reducing operator fatigue.
4. Fuel Efficiency
The SK25SR is known for its excellent fuel efficiency, with many users reporting that fuel consumption remains low even during heavy or prolonged operations. Compared to other similar mini excavators, the SK25SR’s fuel economy is better, helping to reduce long-term operating costs.
5. Maintenance and Upkeep
Maintenance for the Kobelco SK25SR is relatively straightforward, with users reporting good durability and ease of component replacement. Regular maintenance tasks include hydraulic oil changes, battery checks, and air filter cleaning. Proper upkeep helps extend the life of the equipment. Additionally, the availability of OEM parts and repair services is convenient, ensuring reliable long-term operation.
6. Drawbacks and Limitations
While the SK25SR excels in many areas, some users have pointed out that its performance can be slightly limited in extreme working conditions. For example, when dealing with very hard soil or rock, the machine’s power and efficiency may decrease. Additionally, some users noted that the machine’s startup speed can be slow, particularly in tasks requiring a fast response.
Conclusion
Overall, the Kobelco SK25SR is a highly efficient, compact mini excavator, ideal for various narrow space and small to medium-sized construction projects. Its excellent fuel economy, comfortable operation, and powerful hydraulic system make it a popular choice for many users. Despite some minor drawbacks, the SK25SR remains a reliable and versatile mini excavator, well-suited for a variety of work environments.

The Kobelco SK30UR is a compact mini excavator that is widely used in urban construction, landscaping, and operations in confined spaces due to its high efficiency and small size. Below is a review based on user feedback and experiences with the Kobelco SK30UR excavator.
1. Performance and Power
The Kobelco SK30UR is equipped with a powerful engine that provides ample power for various tasks. Despite being a small excavator, its hydraulic system performs exceptionally well, easily handling most earthmoving, digging, and demolition tasks. Many users report that the SK30UR maintains stable performance even in more complex working environments.
2. Compact Design and Maneuverability
The SK30UR’s compact design makes it ideal for operations in tight spaces, particularly in urban construction, landscaping, and roadwork. It has a small turning radius, allowing it to maneuver easily in confined areas. For users requiring high mobility, this excavator is an excellent choice.
3. Operation and Comfort
In terms of operation, the SK30UR features a spacious and comfortable cabin, with an easy-to-use control system suitable for operators of varying skill levels. The layout of the joystick and pedals is well-designed to reduce fatigue during extended working hours. Additionally, the hydraulic system is very responsive, ensuring smooth and precise digging and other tasks.
4. Fuel Efficiency
The SK30UR excels in fuel efficiency, with many users noting that fuel consumption remains low even during extended periods of use. Compared to similar models, the fuel economy of this excavator is superior, helping users reduce long-term operational costs.
5. Maintenance and Upkeep
Maintenance for the Kobelco SK30UR is relatively simple, with users reporting long service intervals and easy component replacements. Regular maintenance tasks like checking hydraulic oil and replacing air and fuel filters help extend the machine’s service life. Additionally, the availability of parts and repair services is excellent, ensuring reliable long-term operation.
6. Drawbacks and Areas for Improvement
While the SK30UR performs well in many areas, some users have mentioned that its startup speed is somewhat slow, especially under heavy load, requiring more time to reach optimal working speed. Furthermore, although it has a small turning radius, navigating in extremely narrow environments can still be challenging.
Conclusion
Overall, the Kobelco SK30UR is an efficient, compact mini excavator suitable for a variety of work environments. Its good fuel efficiency, excellent operating comfort, and strong performance make it an ideal choice for many small to medium-scale construction and urban projects. While it has some minor drawbacks, the SK30UR is a highly reliable and well-rounded excavator.