One of the basic parameters of the event pressure type hydraulic system, whether the event pressure is general or not will greatly affect the event function of the hydraulic system. The abnormal pressure of the hydraulic system is often manifested as the failure of the pressure regulating valve when adjusting the pressure, the failure of the system pressure to stand up, the complete absence of pressure, the continuous connection of high pressure, the pressure rising and falling down, and the unstable pressure.

Once the emerging pressure is abnormal, it will be difficult for the implementing elements of the hydraulic system to carry out the general cycle of things. They can emerge and remain in the original position. The speed of action is significantly reduced. When acting, the coherent control valve group often emits a harsh noise, which causes the machinery to be in an unusual condition and affects the use function of the whole machine.

1、 Hydraulic pump Hydraulic motor Reasons

1. The hydraulic pump and motor have been used for too long, the internal wear is severe, the leakage is large, and the volume effect is low, resulting in insufficient output flow of the hydraulic pump and low system pressure.

2. The engine speed is too low and the effectiveness is insufficient, resulting in the lack of system flow and the low pressure of the hydraulic system.

3. Orient the hydraulic pump to master the assembly position fault or assembly error, the pump is not working, and the system has no pressure.