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一铁牛-55型拖拉机停在麦场里,旁边扔着12个“烧坏”的喷油嘴。见状,我们拆下高压油管检查。刚一拧动高压油管螺帽,顿觉出油阀座松动,其余3个缸亦如此。取下4根高压油管,自流现象严重。遂将4个出油阀紧座——拧紧,重新调整喷油压力后,发动机工作正常,自流现象消失。原来是由于出油阀紧座未拧紧,造成出油阀垫不起作用,致使低压油腔与高压油腔相通,产生自流。
An iron -55 tractor parked in the wheat field, next to throwing 12 “burn out ” of the nozzle. Upon seeing, we removed the high-pressure tubing inspection. Just twist the high-pressure tubing nut, felt the oil valve seat loose, the other three cylinders as well. Remove the 4 high-pressure tubing, serious gravity flow. Then the four oil valve seat - tighten, re-adjust the injection pressure, the engine is working properly, gravity disappears. The original is due to the tight seat of the oil valve is not tightened, resulting in the valve pad does not work, resulting in low pressure oil chamber and high pressure oil chamber connected to produce gravity flow.