One of the common faults is that hydraulic jacks cannot start. There are usually several manifestations of hydraulic jacks not starting: ① repeatedly pressing the handle, but the plunger does not move; ② Press the handle plunger to immediately lift, lift the handle upwards, and the plunger will descend and return; ③ The handle cannot be pressed at all. Any one of these three situations indicates that there is a problem with the hydraulic jack.

The reason for the first problem may be due to sealing, which causes the hydraulic oil to run out or the oil volume to be insufficient, resulting in insufficient transmission distance of the hydraulic oil to reach the bottom of the plunger and push it to run.

The second problem may be caused by a problem with the oil plug, which causes each return stroke of the handle to open the oil circuit in the storage tank, causing hydraulic oil to flow back, resulting in the disappearance of oil pressure and the plunger being lifted starting to drop.

The third possible cause of the problem may be blockage of the oil circuit, which prevents the hydraulic oil from transmitting and prevents the handle from being pressed. Another possible cause is severe overloading, which results in the hydraulic jack not being able to lift the target.

These are the common manifestations and causes of hydraulic jacks that cannot be started. We hope they can help everyone. If you have any other questions, please feel free to contact us.