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●一小四轮拖拉机刚上场工作,就冒黑烟,转速下降直至熄火。经检查发现,集滤器内机油滤网翘起来。原来该机手保养润滑系后,在拧紧固定螺栓时,将机油集滤器带转了一个角度(如图1)。因此,机油泵在工作中,吸不到油底壳里的机油.导致上述故障的发生。正确安装机油集滤器后,故障排除了。●一台新小四轮拖拉机悬挂的双铧犁容易升起,不容易降落。原来操纵阀盖内侧面有一圆弧槽(如图2),通过限位销和定位装置实现提升、中立和下降,但是该操纵阀盖上的圆弧槽过短,无法使阀芯转至下降位置,导致阀芯上的回油孔与泵体上的回油孔相互错开,油缸内的
● A small four-wheeled tractor just went to work on the black smoke, speed down until the flame. After inspection found that the set filter oil filter tilt up. The original maintenance of the hand lubrication system, the tightening of the bolts, the oil filter with a turn (as shown in Figure 1). Therefore, the oil pump at work, can not absorb the oil in the oil pan, leading to the occurrence of the above fault. After installing the oil filter properly, the problem is solved. ● A new small four-wheel tractor hanging dual-plow easy to rise, not easy to land. The original control valve cover inside a circular arc groove (Figure 2), through the stopper pin and positioning device to achieve elevation, neutral and descent, but the manipulation of the arc cover on the valve cover is too short, can not make the valve core to go down Position, resulting in the spool on the back of the pump hole and the oil return hole offset each other, within the fuel tank