What to do when a four-column Hydraulic Press encounters a pulley:
- 1. The valve position sensor of the four-column hydraulic machine is invalid, and it can be replaced when this happens.
- 2. When the control system circuit is poorly grounded, you can check whether each grounding wire is reliably grounded, and determine it by measuring the voltage and deal with it.
- 3. If the shift solenoid valve is faulty, first check whether the solenoid circuit can energize the solenoid, and then check whether the spool is inflexible or stuck, and remove it.
- 4. The four-column hydraulic locomotive speed sensor fails and can be replaced at this time.
- 5. The computer or valve plate of the four-column hydraulic machine is faulty: the simple method is to replace it with a new computer or a new valve plate to test. If the fault disappears, the original computer or valve plate is broken and should be replaced.
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