1. Check if the hydraulic pump of the automatic feeding mixer truck can output hydraulic oil. For new hydraulic pumps, hydraulic oil may not flow out and casting defects (shrinkage, sand holes, etc.) may appear in the pump body. Due to the connection between the suction chamber and the hydraulic chamber, the hydraulic capacity will be depleted. Please replace the pump body as soon as possible. If it is not a new hydraulic pump and there is no hydraulic output, the pump direction may be incorrect, and the parts may be severely worn or damaged, which should be replaced in a timely manner
If there is oil in the hydraulic pump of the automatic feeding mixer truck, please check if the overflow valve is working properly. If an abnormality occurs, the valve of the pressure oil circuit may be stuck due to dust and other reasons, and may be in the return position, resulting in a short circuit between the pressure oil circuit and the overflow pipeline. Loose connectors or connectors in the hydraulic circuit. Some valves may have severe leaks, perhaps due to damaged seals on hydraulic cylinders and motors. To remove it, please disassemble and clean the applicable valve, check the sealing gap and the dimensions of various sealing equipment. If the sealing equipment is damaged, please replace the sealing equipment.
If the output flow rate of the hydraulic pump of the mobile automatic feed mixer decreases significantly with the addition of pressure, and the pressure does not reach the specified value, this is caused by the addition of gaps after the hydraulic pump is worn. The disassembly method is to measure the volumetric power of the hydraulic pump to determine if the pump is still usable. Severely worn parts should be repaired or replaced.
The hydraulic system of the automatic feeding mixer truck can establish normal pressure, and some pipelines or hydraulic cylinders (or hydraulic motors) do not have pressure. This may be caused by blockage of pipelines, small holes or throttle valves, directional control valves, and other components. At this moment, it is necessary to gradually check the presence of oil pressure and oil to identify the cause and eliminate it.
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