论文部分内容阅读
东方红—28拖拉机装用Ⅰ号喷油泵,其上泵体内腔油道回油阀弹簧两端的内孔孔径不等。小端为φ4.2毫米,大端为φ5.2毫米。回油闶(钢球)直径4.7毫米。钢球与弹簧装入阀体(三通螺栓)的正确顺序应是:先装钢球,后装弹簧,装时要注意使弹簧内径较小的一端朝向钢球。只要弹簧的自由高度在22～24毫米之间,压力调整螺钉拧入阀体,使其尾端面与阀体端面平齐,即可保证回油阅在规定的正常开启压力0.5～1公斤力/厘米~2。否则,将弹簧较大的一端朝
Dongfanghong -28 tractor equipped with Ⅰ injection pump, the pump on the inner cavity of the oil return valve spring bore at both ends of the hole aperture ranging. Small end is φ4.2 mm, big end is φ5.2 mm. Oil return 闶 (steel ball) diameter of 4.7 mm. Ball and spring loaded body (three-way bolt) the correct order should be: first loaded ball, after the spring loaded, it should pay attention to the installation of the spring diameter smaller end toward the ball. As long as the spring free height between 22 ~ 24 mm, pressure adjusting screw into the valve body, the end face flush with the valve body end face, you can ensure that the oil back to read the provisions of the normal opening pressure of 0.5 to 1 kg force / Cm ~ 2. Otherwise, move the larger end of the spring toward