How To Clean The Custom Hydraulic System? The disassembly, cleaning and testing of hydraulic components. The hydraulic components are prone to rusting and contamination during transportation or storage. Even new hydraulic components cannot completely eliminate all residual dirt. Uncontaminated hydraulic components should not be disassembled, but they need to undergo functional testing and quality inspection. After the hydraulic system is cleaned, the installation of the hydraulic system is completed. Try to move the system before confirming the pipelines. Perform a cycle of cleaning. The normal operation of the hydraulic system requires extremely strict cleanliness standards. Ensure that the hydraulic pipelines, pipes, valve groups and tanks are clean and free of dirt. Also ensure that the cleanliness of the hydraulic oil meets the requirements.