CAT 320B excavator is used at an altitude of 4850m, with a high and cold climate, low oxygen, and abnormal changes. During the construction process, the machine suddenly showed that the whole machine moved abnormally slowly (such as 13 seconds for one circle without load), while the engine speed was normal and the smoke color was normal when it was running at full load. After analyzing the fault phenomenon, the cause from the engine can basically be ruled out. It is determined that the fault comes from the hydraulic system. It may be due to a mechanical failure of the hydraulic pump itself causing serious internal leakage, or it may be due to insufficient system pressure. In addition, it may be that the power mode is set incorrectly. The 320B hydraulic excavator is designed with 3 different power modes: heavy load mode, normal mode, and fine mode. The engine power absorbed by the hydraulic system is 100%, 90% and 75% respectively. If the power mode is set to fine mode, it may cause the machine to move slowly. The pilot pump provides pressure oil for the pilot system. One of the functions of the pilot system is to control the main oil……

  The oil pan of the crawler frame of a used excavator has two functions: one is to store grease to ensure good lubrication of the slewing motor and the slewing bearing meshing gear; the other is to serve as a mounting seat for the slewing joint. The installation status of the oil pan of a certain type of excavator is shown in Figure 1. This article analyzes the cracking of the oil pan of this type of excavator and proposes a repair and improvement plan. Fault phenomenon When a certain type of excavator was in operation for nearly 2000 hours, some grease appeared on the ground where it had been operating. After opening the bottom guard plate of the walking frame, it was found that cracks appeared on the bottom plate of the oil storage pan, and the grease penetrated from the cracks and dripped on the ground. After summarizing the faults, it was found that the cracks were divided into 4 categories: one is that the crack starts from the middle of the bottom plate of the oil storage pan, extends outward and then splits into 2 cracks; the second is that the crack starts from the middle of the……

Hydraulic pump is the power source of used komatsu excavator hydraulic system, it is the energy conversion device that converts mechanical energy into hydraulic energy. Hydraulic pump in the hydraulic excavator is also the most faulty components, and once the hydraulic pump failure will immediately affect the normal work of the excavator hydraulic system, or even can not work! 1, gear pump common failure, most of them are caused by the wear of its internal friction vice. Its normal wear and tear so that the radial clearance and axial clearance (i.e., section clearance) increases, so that the gear pump internal leakage phenomenon is aggravated, and in severe cases, the pump body hole or both sides of the plate can not be repaired. In addition, the shaft seal is also often damaged parts. 2, vane pumps and gear pumps are different, its normal wear and tear is very small, long service life of parts. The main cause of vane pump failure is oil contamination, this is because the vane pump sports vice with more precise, when the pollutant into the friction vice, easy to produce abnormal stall or wear. In addition, the self-priming performance of the vane pump is not as good as……

hyundai 220 excavator cab design technology The newly designed cab provides low-noise operation and enhanced visibility, creating a comfortable working environment for the operator Ergonomically designed joystick The new joystick with 4 switches allows precise control of the machine Spacious cab with excellent vision The ergonomically designed large cab has low noise and excellent vision The panoramic front window, large rear window and side windows provide visual visibility in all directions Strengthened structure The cylindrical structure of the cab has improved plate thickness to ensure optimal safety. Cab Design Technology The newly designed cab provides low-noise operation and enhanced visibility, creating a comfortable working environment for the operator Ergonomically designed joystick The new joystick with 4 switches allows for precise control of the machine Spacious cab with excellent visibility The ergonomically designed wide cab has low noise and excellent visibility Panoramic front window, large rear window and side windows provide visual visibility in all directions Reinforced structure The thickness of the cab's cylindrical structure has been improved to ensure optimal safety Improved performance and safety features Conquer the limit Track guard and adjuster Durable track guard protects the track chain from derailing. Standard grease tensioner and vibration absorbing spring make track……

The hyundai 305 excavator is a modern excavation equipment with the following advantages: First, the R305LC-9 excavator is equipped with a powerful engine and hydraulic system, which gives it excellent working performance. Its high engine power, coupled with the advanced hydraulic system, enables the excavator to efficiently and stably complete various excavation tasks and improve work efficiency. Second, the R305LC-9 excavator has excellent maneuverability and operability. The excavator adopts an advanced steering system and cab design, which allows operators to easily perform precise guidance and control, improving work accuracy. In addition, the excavator has high steering flexibility and can adapt to various complex working environments, improving construction flexibility and efficiency. In addition, the R305LC-9 excavator has a sturdy and durable structure and reliable parts. The excavator uses a fuselage and boom made of high-strength steel materials, which are impact-resistant and wear-resistant, and can remain stable and durable in harsh working environments. In addition, the key parts of the excavator are internationally renowned brands with reliable quality, reducing the failure rate and maintenance costs. However, the R305 excavator also has some disadvantages: First, the price of this excavator is relatively high. Due to its advanced technology and high-quality components, the price of the R305LC-9……

Komatsu 200-7 excavator is a popular model, so what are its advantages? Today, China's second-hand excavator market will analyze why this is the case. Friends who know a little about Komatsu 200-7 excavators know that the last batch of Komatsu 200-7 excavators was manufactured at the end of 2008. That is to say, even the last batch of Komatsu 200-7 excavators has been in use for several years. If it was manufactured before, the years are even longer. You know, under normal circumstances, the value of the excavator is very, very low after five years. But the Komatsu 200-7 excavator is an exception. So the Chinese second-hand excavator market tells you what the reason is? In fact, it is not that the Komatsu 200-7 excavator is so good. Of course, it is really good. It is because the new excavators Komatsu 200-8 and Komatsu 200-8EO are both electronic injection engines. The oil quality requirements are very high. If the oil is slightly inferior, the fuel injector will break. Therefore, it is easy to break and difficult to maintain. Therefore, there are so many excavator friends who still choose second-hand Komatsu 200-7 excavators. This is also the reason why Komatsu pc200-7 excavators have maintained……

    The Carter 320gc engine is an important part of mechanical engineering, with excellent technical level and industrial design. The engine has excellent performance and a wide range of applications, including mining, construction, road construction, shipbuilding, etc. To ensure its long-term stable operation, it is necessary to pay attention to daily maintenance and regular maintenance. Summarize the advantages and value of the Carter 320gc engine, look forward to its future development prospects in the field of mechanical engineering, and emphasize its important role in promoting industrial progress.     The Carter 320GC engine is a high-performance, high-efficiency diesel engine with many advanced technical features. The following are some of the main technical features of the engine:     1. High fuel efficiency: The Cat 320GC excavator engine uses an advanced fuel injection system that can accurately control fuel injection, improve fuel utilization, and reduce fuel consumption costs. At the same time, the engine is also equipped with an efficient turbocharger, which can further increase the intake pressure, increase engine power and torque, and further reduce fuel consumption.     2. High reliability: The used Cat 320GC engine uses high-strength materials and durable components, with long life and reliability. In addition, the engine is……

    The Carter 320D 6.4 engine, as an outstanding power product of Carter, enjoys a high reputation in the field of construction machinery with its powerful performance, efficient fuel economy and excellent reliability.      This engine has become an important pillar of the construction machinery industry with its excellent technical features and wide application fields.     In addition to its technical features, the Cat 320D excavator 6.4 engine also has a wide range of adaptability in its application areas. It is widely used in various Caterpillar construction machinery products, such as excavators, loaders, graders, etc. These construction machinery play an important role in infrastructure construction, mining, agricultural production and other fields, and the Caterpillar 320D 6.4 engine, as their core power source, provides strong power support for these construction machinery.   In the field of excavators, the Cat 320 excavator 6.4 engine, with its high power and torque characteristics, enables excavators to easily cope with various excavation operations. Whether it is breaking hard rocks or digging soft soil, the Carter 320D 6.4 engine can provide sufficient power to ensure the smooth progress of excavation operations.   In the field of loaders, the Carter 320D 6.4 engine also performs well. It can……

Inexperienced operation skills: Excavators require operators to be proficient in their movement skills, otherwise the operation will be uncoordinated. Poor hydraulic oil condition: Poor hydraulic oil condition can easily lead to slow response of the excavator hydraulic system, resulting in uncoordinated movements. Hydraulic pipeline aging: After long-term use, excavator hydraulic pipelines are prone to aging, leading to hydraulic oil leakage and slow response of the hydraulic system, resulting in uncoordinated movements. Solenoid valve failure: Solenoid valve failure may cause the excavator to move uncontrollably, such as the last valve being broken in a row. Regulator issue: Regulator issues may lead to uncoordinated composite actions, such as when the data of the kobelco 200 excavator is normal, but the vehicle still lags behind when performing composite actions. Method to solve the problem of uncoordinated operation of the used excavator of kobelco 200 Proficient in operating skills: Operators need to strengthen their grasp of excavators through practical operations to achieve a proficient mastery of operating skills. Maintain the condition of hydraulic oil: Regularly replace hydraulic oil to keep it in good condition. Regularly inspect hydraulic pipelines: Regularly inspect hydraulic pipelines, replace aging pipelines in a timely manner, and maintain the hydraulic system…….

1、 The reason for the black smoke emitted by the Cat 320D excavator 1.1 Poor fuel quality Poor fuel quality and excessive impurities can increase the wear of the fuel pump and injector, leading to incomplete combustion and the production of black smoke. 1.2 Excessive carbon deposition Long term use of the Caterpillar 320D excavator will result in carbon deposits inside the engine, which will affect the pressure and temperature inside the combustion chamber, prevent the normal combustion of fuel, and also endanger the normal operation of the engine. 1.3 Hydraulic oil temperature too high The Cat 320D uses a hydraulic system as power support. If the hydraulic oil temperature is too high, it will cause the system to operate poorly, resulting in high oil resistance and affecting the overall efficiency of the system, leading to black smoke emissions. 2、 Solution to the problem of black smoke emitted by the Caterpillar 320D used excavator 2.1 Fuel Replacement To avoid black smoke from excavators caused by poor fuel quality, fuel that meets national standards should be used during refueling, and fuel filters should be replaced regularly. 2.2 Carbon removal Long term use without timely maintenance can lead to carbon deposition. The……

1、 The function of the solenoid valve of Komatsu pc200-8 excavator The excavator solenoid valve is one of the key components in the excavator control system. Its function is to control the flow and pressure of oil in the hydraulic system, thereby controlling the implementation of various functions of the excavator, such as lifting, steering, and extension. 2、 The performance of the malfunction of the Komatsu 200 solenoid valve 1. Unable to start: If the excavator solenoid valve is damaged, the excavator will not be able to start. The malfunction of the solenoid valve is often caused by coil failure or damaged valve core. 2. Abnormal sound of Komatsu 200-8 excavator: If the solenoid valve is damaged, it may also cause the excavator to make abnormal noise during operation. 3. Failure: If the solenoid valve is damaged, it will cause various functions of the excavator to malfunction, such as inability to control the lifting and flipping of the excavator bucket. 4. Oil leakage: After the solenoid valve is damaged, it may cause oil leakage in the hydraulic system, resulting in insufficient pressure in the excavator's hydraulic system and inability to operate normally. 3、 Solution for electromagnetic valve failure 1. Repair:……

Disassembly method of oil radiator for CAT 329D excavator The disassembly method for the oil radiator of the Caterpillar diesel engine is as follows: Firstly, for the oil radiator of the Caterpillar 329D excavator engine, when replacing it, the engine coolant needs to be drained first, then the inlet and outlet pipes and support frame of the radiator need to be removed, and then the radiator needs to be removed from the engine. Finally, the inlet and outlet pipes and support frame need to be reinstalled, and coolant needs to be added. For the Caterpillar 320C oil radiator, the disassembly method is to drain the engine coolant and oil, remove the cooling pipeline of the turbocharger from the oil turbocharger after draining, then remove the fixing bolts of the oil radiator separately, and finally remove the oil radiator. For the Cat 349D oil radiator, before disassembling, completely cool the engine cooling system, open the engine hood to find the position of the oil radiator, which is usually a shiny aluminum sheet structure located in front of the engine. Then use a wrench or screwdriver to loosen and remove the water and oil pipes connected to the oil radiator, temporarily clamp……