Before use, it is necessary to check whether the parts are normal. Check whether the piston, joint, high-pressure hose, etc. are leaking oil.
When using, the provisions of the main parameters should be strictly observed. Avoid excessive overload. Otherwise, when the lifting height or lifting tonnage exceeds the specified level, serious oil leakage will occur at the top of the hydraulic cylinder.
If the amount of oil in the manual hydraulic pump is insufficient, it is necessary to first add the fully filtered hydraulic oil to the pump to work.
The choice of the center of gravity of the weight should be moderate, and the focus of the jack should be properly selected. The bottom surface should be leveled. At the same time, the soft and hard conditions of the ground should be considered. Whether the tough wood should be padded should be placed smoothly to prevent the load from sinking or tilting.
After the jack lifts the heavy object, the support should be used to support the heavy object in time.
If several hydraulic jacks are required to be lifted at the same time, in addition to the correct placement of the jacks, it should also be noted that the load of each jack should be balanced. Pay attention to keeping the lifting speed synchronized to prevent the weight from being tilted and dangerous.
When using the hydraulic jack, first place the hydraulic cylinder, then tighten the oil drain screw on the hydraulic pump to work. To lower the piston rod, the manual hydraulic pump hand wheel is slightly loosened in the counterclockwise direction, the hydraulic cylinder is unloaded, and the piston rod is gradually lowered. Otherwise, falling too fast will be dangerous.
The split jack adopts a spring-returning structure, and after lifting, it can be quickly taken out, but the connected hose cannot be used to pull the jack.
Because the lifting stroke of the jack is small, the rated stroke should not be exceeded during use to avoid damage to the jack.
During the use, the jack should be prevented from vibrating violently (for example, when the jack is loaded, hit the workpiece with a hammer).
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