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How to repair if the pneumatic jack cannot lift up
1. Check if there is enough compressed air in the air storage tank of the pneumatic jack. If not, inflate the air storage tank.
2. Check if the piston rod of the pneumatic jack is well lubricated. If the lubrication is poor, apply lubricating oil.
3. Check whether the piston rod and piston ring of the pneumatic jack are severely worn. If they are severely worn, they need to be replaced.
4. Check if there is any air leakage in the pneumatic system of the pneumatic jack. If there is, it is necessary to locate and repair the leakage point.
5. Check if the control valve of the pneumatic jack is working properly. If it is not working properly, it needs to be repaired or replaced.
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