Views: 0 Author: Site Editor Publish Time: 2025-09-18 Origin: Site
When a failure of the hydraulic press cannot rise, it usually manifests as if the pressure-regulating handwheel is fully tight, the pressure can only rise to a certain value and cannot continue to rise, especially when the oil temperature is high, which is particularly obvious. So what are the reasons for the pressure not rise?
1. Check whether the cartridge valve and reversing valve are stuck
2. Checking the circuit failure may be the main reason for the inability to rise under normal circumstances. It is recommended to use a screwdriver to stab the small reversing valve to see if it is stuck, and then check whether the indicator light of the rising small valve is on.
3. The main relief valve in the four-column press system is worn seriously, causing overflow and debris, which is why it is stuck.
4. The flush valve on the upper part of the oil cylinder is not opened, so it cannot rise under normal circumstances.
5. Check whether the oil cylinder is broken.
6. Whether the four-column press system is adjusted and balanced and stuck the beam, of course, there are not many such problems.
7. The total flow of the pump is abnormal, such as the total flow of the pump becomes inversely proportional to the working pressure.
8. Check whether the working pressure of the hydraulic transmission system is under normal circumstances
9. The lower chamber direction valve of the hydraulic transmission system is stuck, and oil also enters the upper and lower chambers.
10. The valve core of the hydraulic transmission system's liquid filling valve is stuck, which is likely to be a debris or a spring break.
