How to repair the steering wheel power steering pump of automatic feeding mixer?
If there is a problem with the automatic charging mixer and the cause of the failure cannot be found, the directional booster pump will be adversely affected and more likely to be damaged.
The power steering pump of automatic feeding mixer, usually called power steering pump, is the core of power steering system and steering system. For heavy-duty wrecker, hydraulic steering system becomes more important because of mechanical steering force and driver's labor intensity.
The general vane pump consists of a pump body with hyperbola in the inner cavity, a grooved rotor and blades. Some of them are mounted on the flywheel housing at the rear of the engine and are driven by timing gears. When the engine is running, the rotor of the booster pump is driven to rotate, and the blades move outward along the blade slot under the action of centrifugal force. During the rotor rotation, it is close to the inner wall of the pump body, and the volume between the blades larger than the closed space increases continuously. The oil absorption and hydraulic process are realized. Every time the rotor rotates, the oil absorption and oil pressure are completed twice. The pump body also has a safety valve to limit the pressure. When the external load on the steering system increases and the hydraulic pressure rises to a certain value, the relief valve will open and the load will be removed. Throttle valve and flow control valve are also installed in the pump body, so the capacity of booster pump is almost constant.
Since the use and maintenance of the power steering pump is particularly important, the following operations must be carried out:
1. In the process of use, if the steering pump booster leaks, vibrates or makes abnormal sound, it is necessary to check and gradually eliminate it.
2. After the automatic feeding mixer works for a period of time, the hydraulic oil filter should be replaced in time, especially after the installation of a new pump, the hydraulic oil should be replaced after 2500-3000 km.
3. Regularly check the oil level in the oil tank. Clean hydraulic oil needs to be replenished in time. The tank filter elements must be cleaned with alcohol during maintenance.
4. Correct selection of hydraulic oil is very important to ensure high efficiency and long life of booster pump.
How to change the oil? The method is as follows:
Support the front axle and move the wheels off the ground. Remove fuel tank cap, drain plug of return line and rotary unit. Start the engine at high speed for about 10 minutes and drain the oil tank, steering wheel booster pump and steering gear hydraulic oil. Stop the engine and turn the steering wheel to the left and right to drain all remaining hydraulic oil. Change the filter element, increase the hydraulic oil and exhaust air from the hydraulic system.
Automatic loading mixer steering wheel power steering pump maintenance situation understand that is it, do you understand?