How is the repair of hydraulic pumps in Komatsu excavators carried out?

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Among all construction machinery, excavators are the most common type; one can see excavators in use at construction sites everywhere. Among these excavators, Mitsubishi excavators are undoubtedly very popular among users. With so many users, malfunctions are inevitable. When problems arise in the hydraulic system, what are the steps for repairing the hydraulic pump of a Komatsu excavator? 　　As we know, the hydraulic pumps used in Komatsu excavators can be classified structurally into gear pumps, vane pumps, etc. Below, we will take the gear pump as an example to explain its faults and diagnosis methods. The most common failures of gear pumps are wear of the pump body and gears, cracks in the pump body, and mechanical damage. In such cases, major repairs or part replacement are generally required. 　　Based on our past experience, common faults of gear pumps include severe noise and pressure fluctuations ； Insufficient oil delivery: The hydraulic pump is malfunctioning or stuck. When our Komatsu excavator exhibits the above issues, we should shut down the machine promptly and conduct a thorough inspection. When the above situations occur, we should focus on checking the following parts: First: the pump’s filter – if it is clogged with dirt, it will be unable to perform its function of filtering oil. Second: the axial and radial gaps – if these gaps are too large, it will result in insufficient oil delivery. 　　Third: Pump body – Check for cracks and air leaks in the pump body. Fourth: Oil inspection – Verify whether the oil temperature is too high or the oil viscosity is too high; these conditions can also lead to insufficient oil delivery by the hydraulic pump. 　　Fifth: Oil level: Check to see if the oil level is too low, resulting in insufficient fuel supply. 　　Sixth: Coupling: Check the concentricity of the coupling between the motor and the drive, to see if there is any issue with insufficient concentricity. 　　In general, the maintenance of Komatsu excavator hydraulic pumps can be carried out by following the steps mentioned above. When problems arise with the machine, it is necessary to proceed step by step using proper methods; one should not rush, and it is important to be able to identify issues within the hydraulic pump. If a situation arises that cannot be resolved on one’s own, it is necessary to contact a hydraulic pump repair company and have professional hydraulic pump technicians come to carry out repairs on the hydraulic pump of the Mitsubishi excavator.