The main reasons for the loss and insufficiency of system pressure in the hydraulic transmission system are as follows:
The power of the hydraulic pump is small, the rotating speed is not up to standard, and the steering direction of the hydraulic pump is incorrect; The valve core is jammed, resulting in unloading; The oil temperature exceeds the specified range, the oil absorption is not smooth, and the liquid level does not meet the specified standard; Leakage and component damage caused by improper sealing; After opening the overflow valve, the damping hole is blocked, the spring cannot play its due role, and the valve core cannot be closed.
Treatment method:
It is necessary to detect the power source of the hydraulic transmission system and thoroughly clean the cooling system/oil suction pipe and damping hole; Replace the spring and add hydraulic oil; Ensure the effective operation of the valve core in the valve body, repair or replace the faulty components; Check the connection and sealing degree of the system pipes, valves, pumps and other parts, replace the sealing parts, and enhance the sealing effect; Repair and adjust the system housing and valve core.