1, the hydraulic oil in the tank is insufficient, the oil pump inhaled air or the oil filter is blocked by the dirt, which will cause the oil pump to lack oil, which causes the bubbles in the oil liquid to discharge the impact blade and produce noise. The solution is to check the amount of oil, prevent the air from inhaling and clean the filter.
2, hydraulic oil viscosity is high, increase flow resistance, need to replace the appropriate hydraulic oil.
3, due to the damage of the bearings or blades of the oil pump or motor, the concentricity deviation of the coupling causes noise, and the concentricity or the replacement of parts must be adjusted.
4, the direction valve response failure but the function is still in, such as the valve heart wear, internal leakage, burr blocking, movement is not flexible, the electromagnetic valve failure due to the current will also produce noise. The solution is to clean the valve core or replace the new parts. The current must be stable and sufficient.
5, hydraulic components damage or oil pipeline blockage, so that high-speed noise generated by hydraulic oil noise.
6, mechanical parts failure, machine parts lubrication is insufficient, parts loose, we should find out the reasons for fastening or replacement.
B, the press board does not descend, or does not reset after the downlink
1, the switch has a problem, check or replace.
2, the fuel tank is insufficient or the oil pipe leaks, refueling or tightening the tubing connection.
3, the solenoid valve can not be reset, repair or replace.
4, the relay contact is not good, the main oil circuit can not switch, check the line.
Low pressure of C and press board
1. The oil pump is damaged or the oil inlet line is blocked, and the oil cylinder leaks.
2. The touch switch is too slow or faulty, and it is adjusted to make it touch or replace it at about 10mm before the cutting point.
3, solenoid valve failure, repair the axis of the solenoid valve.
4. The circulating oil of the tank is not enough. Replenish the circulating oil so that the oil level exceeds the oil screen.
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