When installing the relief valve, the following steps should be strictly followed: first, select the matching model according to the system pressure and flow parameters to ensure that the valve body is firmly connected to the pipeline to avoid hydraulic oil leakage; Secondly, thoroughly clean the fuel tank and pipeline before installation to prevent impurities from entering the valve body and causing stagnation or wear; During the commissioning phase, the pressure setpoint and response speed are verified, and the spool pre-pressure is adjusted if necessary to optimize performance. For common faults, such as pressure fluctuations or failure to pressurize, the cleanliness of the hydraulic oil, the blockage of the damping holes, and the status of the return spring of the main spool can be checked first, and the problem can be quickly eliminated by cleaning the valve body, replacing the seals, or filtering the oil.