The hydraulic jack is malfunctioning, but the problem cannot be analyzed on the surface. What should I do? If you can be sure that there is an internal problem, do not disassemble and the problem cannot be solved, then you can consider disassembly. If it does not need to be disassembled, it will cause a lot of trouble, especially if the electro-hydraulic jack is disassembled, it is more difficult for technicians to repair, and it is time-consuming and labor-intensive. Today, as a manufacturer, I will give you some tips to pay attention to when disassembling and assembling.
1: Before disassembling the jack, loosen the relief valve and other pressure regulators to make the hydraulic circuit pressure relief, that is, the pressure close to zero. Then cut off the power, stop the hydraulic jack, and stop in a position where it can be disassembled. Let go of the oil in the two chambers of the hydraulic jack, disassemble the cylinder head, correct the thread before dismantling, pour some kerosene, leave it for a while, tap the cylinder head lightly to make the threads loose, and then remove it.
2: Before removing the piston and piston rod assembly from the cylinder, clean up the dirt in the cylinder before disassembling. The piston cannot be forced out of the cylinder to prevent the dirt from damaging the cylinder hole. When disassembling, avoid damaging the thread on the top of the piston rod, the thread of the oil port, the surface of the piston rod and the piston, and avoid unnecessary knocks and accidental fall on the ground.
3: When the hydraulic jack is repaired and then assembled, in principle, all seals should be replaced with new ones. The cause of the original seal should be found out before replacement, so as not to damage the seal again with the same reason. All parts can be assembled after careful cleaning . After understanding the disassembly and assembly essentials of hydraulic jacks, I believe it will be of great help to you when repairing or maintaining the jacks.