The price of repairing the hydraulic system of a Caterpillar excavator varies due to multiple factors, including the specific components of the malfunction (such as the main pump, motor, valves, etc.), the selection of genuine or aftermarket parts, and the standard maintenance fees in the region. Firstly, it is crucial to identify the specific issues with the hydraulic system, such as whether it requires replacement due to internal component wear or troubleshooting due to control system malfunctions. Once the problem is diagnosed, the repair costs can be estimated more accurately. During the repair process, if it involves the replacement of core components like the main pump or motor, the cost is usually higher, ranging from thousands to tens of thousands of dollars. If it's a simple replacement of seals or hoses, the price is relatively lower. Additionally, using genuine parts compared to aftermarket parts, while ensuring better quality, also increases the cost accordingly. Finding a professional Caterpillar excavator repair service can effectively control repair costs. With their rich experience and professional skills, they can not only quickly locate problems but also provide reasonable quotation schemes, ensuring that hydraulic system repair projects are both economical and efficient. In summary, for the question of 'how much does it cost to repair the hydraulic system of a Caterpillar excavator,' it is impossible to provide an exact figure. We recommend contacting the local authorized Caterpillar excavator service center or a professional repair team to obtain accurate estimation services. While optimizing keyword rankings, we always emphasize service quality and customer satisfaction, committed to ensuring that every user who owns a Caterpillar excavator can spend transparently and work with peace of mind when facing hydraulic system repairs.