Sumitomo Excavator Parts: FAQs & Solutions | Kyotechs

In the field of modern engineering machinery, excavators play a vital role, and behind this, there is a company that is quietly adding momentum to the industry, that is Kyotechs. With the mission of "building a community of shared destiny for partners and adding strength to the excavator industry", Kyotechs is not only committed to providing high-quality excavator parts, but also promoting the development of the entire industry with a long-term vision and innovative thinking.

In an increasingly competitive market environment, the era of fighting alone is over, and win-win cooperation is the key to future development. Therefore, the company has always been committed to building a close community of shared destiny for partners. This is not just a simple business cooperation, but also a deep collaboration based on trust, mutual assistance and common goals.

In this community of shared destiny, Kyotechs shares information, resources and opportunities with suppliers, customers, technical partners and other relevant parties. In this way, the company can not only respond quickly to market needs, but also foresee and respond to industry challenges in advance. The success of our partners is our success. It is this concept of symbiosis and win-win that has established a good reputation for Kyotechs in the industry.

As a company focusing on excavator parts, Kyotechs' products cover hydraulic pumps, engine parts, electronic controllers, transmission system parts and other fields. These high-quality parts not only ensure the efficient operation of the excavator, but also play an important role in improving overall engineering efficiency and reducing equipment failures.

Kyotechs not only pursues commercial success, but also takes "becoming a happy person in the field of excavation equipment" as its vision, emphasizing the happiness and satisfaction of all stakeholders. This vision reflects the company's deep care for employees, customers and society.

For Kyotechs, customer satisfaction is an important criterion for measuring our success. The company has always been customer-oriented and provides high-quality products and a full range of services. Whether it is product quality, delivery speed or after-sales service, Kyotechs strives to do its best to ensure that every customer can enjoy an experience beyond expectations.

Digging powerlessness can be divided into two situations: one is digging powerlessness, the engine does not hold back, and the load feels very light; the second is digging powerlessness, when the boom or dipper stick is extended to the bottom, the engine is seriously held back or even stalled.

①, digging powerlessness but the engine does not hold back. The magnitude of the digging force is determined by the output pressure of the main pump, and whether the engine holds back depends on the relationship between the oil pump absorption torque and the engine output torque. The engine does not hold back, indicating that the oil pump absorption torque is small and the engine load is light. If the working speed of the excavator is not obviously abnormal, the maximum output pressure of the main pump, that is, the system overflow pressure, should be checked in particular. If the overflow pressure measurement value is lower than the specified value, it indicates that the overload overflow valve setting value of the hydraulic circuit of the mechanism is incorrect, resulting in premature overflow of the mechanism and powerlessness. The machine can be adjusted by turning the adjustment screw.

②, digging powerlessness, engine holding back. The engine holding back indicates that the absorption torque of the oil pump is greater than the engine output torque, causing the engine to overload. This fault should first check whether the engine speed sensing system is normal, and the inspection method is similar to the engine inspection method described above. After the above detailed inspection and troubleshooting, the engine speed sensing system will resume normal function, the engine stalling phenomenon will disappear, and the digging force will return to normal.

Inspect the tracks, travel motors, and travel reducers. Test the pressure and flow of the hydraulic drive system, check if the control valves are functioning correctly, and perform necessary repairs or replacements.

Before long-term storage, perform a thorough inspection and maintenance, drain fuel and hydraulic oil, lubricate all parts, start the engine periodically to run the system, and ensure all systems operate correctly.