Putzmeister Concrete Pump Hydraulic Circuit Faulty

The extensive use of concrete pump trucks in construction projects speeds up construction and ensures the quality of China's construction projects. However, in concrete construction, the pumping part of the pump truck will be in direct contact with the concrete. The hydraulic system of the pumping part has a large workload, heavy load, and harsh working conditions, which will cause great damage to the internal components of the system. If the Putzmeister concrete pump is not serviced and maintained after working, the equipment is prone to failure. Here are some common faults and how we should check and repair them.

Bearings for hydraulic pumps The most important part of a plunger pump is the bearing. If the bearing has a backlash, the normal clearance of the three friction pairs of the pump pressure and the anti-liquid in the bearing cannot be maintained, and the thickness of the oil film supported by the static pressure of the friction pair will be destroyed, reducing the service life of the bearing of the plunger pump. According to the data provided by the hydraulic pump manufacturer, the average service life of the bearing is 10,000 hours. If it exceeds this value, it needs to be replaced. Remove the bearing, the clearance of the bearing cannot be checked without professional testing equipment, it can only be checked visually, if any discoloration or scratches are found on the surface of the roller, it must be replaced. When replacing bearings, pay attention to the English letters and models of the original bearings. Most of the bearings of plunger pumps use bearings with large load-bearing capacity, so the replacement of bearings should consult experienced personnel to check the table for replacement, so as to maintain the accuracy level and load-bearing capacity of the bearings.

If the engine of the concrete conveying system cannot start normally, you can use the oil pump to release the air in the oil suction pipe, and clean the diesel oil suction filter in time to avoid pipeline blockage. The torque converter system of the small dump truck gearbox should be checked, removed or replaced regularly. Charge the battery in time. 3. The gear pressure of the concrete delivery pump is low or no pressure. Check the control valve and paper pad first, clean or replace them in time, check the clutch corresponding to the gear position, and check whether the clutch controls the pressure normally. When confusing gears and ignoring gears, check the solenoid. If the torque converter oil temperature rises too fast, it should be cooled in time. Clean and cool the outlet and V-belt if necessary.

If the hydraulic system of the concrete delivery pump fails, the hydraulic system of the concrete delivery pump should be well controlled and the faulty working pump should be replaced in time. When necessary, the working pressure of the system should be adjusted to 13MPa or 18MPa.

Insufficient flow leads to low liquid level in the oil tank, high oil viscosity, and oil suction resistance caused by filter blockage. You can check the liquid level, replenish the oil, replace the hydraulic oil with suitable permeability, and ensure the oil suction pipe. If the idling wear of the hydraulic pump is serious and the performance declines, check the engine, hydraulic pump and hydraulic pump variable mechanism, and replace the pump if necessary.

If you encounter troubles or problems that are difficult to solve, you can consult us directly. We have many experienced professional staff who can provide professional services for your hydraulic pumps. We also have hardware facilities support, which means that we not only Only high-quality advice can be provided, and high-quality replacement products can also be provided to you.

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