Normal operation of the hydraulic system of wire rope press is a major sign of its good technical condition, correct and reliable operation of the hydraulic system for maintenance is essential. Clean hydraulic oil pressure of hydraulic system for life. Many precision coupling in the hydraulic system, set damping holes or joints. If intrusion of solid impurities will result in precision coupling strained, card issuers, oil road blockage will endanger the safe operation of hydraulic systems. Solids means: hydraulic oil impurity; refueling tool clean; refueling and maintenance, maintenance careless remarks desquamation of hydraulic components. Therefore, we should try to avoid impurities mixed with hydraulic system of wire rope press.