Time:2023-04-27 16:25:53 Browse: 120
1. Check the internal leakage of the hydraulic pump boom cylinder of the 400-ton hydraulic press:
The easiest way to do this is to raise the boom and see if it has a noticeable free fall. If the drop is noticeable, remove the cylinder and check to see if the seal should be replaced, if found to be worn.
2. Check the hydraulic pump control valve of the 400-ton hydraulic press:
First clean the safety valve of the hydraulic press and check whether the spool is worn. If worn, it should be replaced. If there is no change after installing the safety valve, check the wear of the valve stem of the four-column press. The clearance limit is typically 0.06mm. If worn severely, it should be replaced.
3. Measure the pressure of the hydraulic pump of the 400-ton hydraulic press:
If the pressure is low, adjust it, and the pressure is still not adjusted, indicating that the hydraulic pump of the four-column press is seriously worn.
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