1: Loosen the handwheel or pressure adjustment screw of the four-column hydraulic press, and turn off the power after removing the pressure; the operator should do so slowly to avoid unnecessary damage to the surface and top threads of the hydraulic cylinder, the oil hole threads and the inner wall of the cylinder liner. The wooden support is used to prevent the hydraulic cylinder from bending or deforming; then, due to the different specifications of the four-column hydraulic press, the cylinder structure size is different, but the working principle of the hydraulic press is roughly the same. First drain the oil from the cylinder and remove the cylinder head, piston and hydraulic cylinder. It is strictly forbidden to use a flat shovel to disassemble, and the flange end cover is pushed out with screws. Do not dry it and keep the surrounding environment hygienic. Disassembled parts must be covered with plastic sheeting;
2: Check the disassembled parts to determine whether they can be used and need to be repaired or replaced. Please clean them before installation. Use a special wrench to tighten the threaded joints. The torque must comply with the regulations. After the four-column hydraulic press is installed, the piston When parts are moved, there will be no resistance or uneven resistance. The inlet and outlet oil hole joints must be tightened with a sealing ring to prevent oil leakage. Carry out several repeated movements under low pressure conditions to remove the gas in the cylinder, and ensure that the installation requirements are met. Put into production.
