Hollow jack is an indispensable lifting equipment in our production operations, especially in the maintenance of some equipment and railway laying process is widely used. However, the production technology of the hollow jack is very troublesome. Technically, it is a special jack. For friends who do not use the jack frequently, they do not know what to do after the hollow jack fails.

1. The small pump of the hollow jack leaks oil
The small pump of the hollow jack often leaks oil in use. This is mainly because the pump core does not return immediately after use, and the seal of the pump body for long-term use may be worn or broken. In order to solve this problem, the jack must be clamped to the vise, the pump must be removed, the seal inside must be tightened, or a new seal must be replaced immediately. Loosen the oil valve and pull out the pump core for cleaning.

2. Unable to lift
This problem is also very simple, generally because the internal lubricating oil of the hollow jack is insufficient, the impurities are stuck in the steel ball, and the jack body is stuck. To deal with this fault, you can add lubricating oil to the jack. Then, immediately remove the hollow jack to clean up impurities. During this process, please be careful not to let air enter the inside of the jack.

3. After use, the piston rod will automatically rise after pressing
If this failure occurs in the hollow jack, there is air inside. Press the piston rod, open the fuel filler, and exhaust the air. Remember to add butter to seal after exhausting the air.

4, the rise is insufficient, can not reach the standard height
The reason why the hollow jack cannot reach the height is that the internal oil is not satisfied, or the long-term use will reduce the loss. This fault is also handled well, increasing the lubricating oil, ensuring the sealing of the hollow jack and the sufficient internal oil level, and a small amount of overflow Oil is no problem.

The above is the common faults and solutions of the hollow jack introduced for you. When a fault occurs during use, you can refer to the methods described above to solve it.