There are 6 rake teeth, mounted on the shaft. When not working, the rake teeth point up, and by the safety spring positioning. When it is necessary to work the soil looser, remove the safety spring. After pulling out the shaft through the handle, the rake teeth can be placed in the working position. When the rake teeth are down, push the shaft back. If it is necessary to reduce the rake teeth, put the spacer in the middle. In the process of soil loosening, the scraper is used to lift the oil cylinder, so that the soil loosening apparatus can get the appropriate depth.

The hydraulic system mainly consists of oil tank, hydraulic pump, multi-way valve, hydraulic cylinder, scraper rotary hydraulic motor and so on.

The hydraulic operating system of liugong grader accessories drives the hydraulic devices of the whole vehicle, including scraper rise and fall, scraper tilts left and right, scraper turns left and right, soil looser rise and fall, steering wheel deflection, brake braking, etc. Often composed of more than one oil line.

Use model：grader4180