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(1)铁牛-55型拖拉机的第二缸不供油,于是拧开二缸出油阀紧座,卸下出油阀检查,所查各件(出油阀、阀座、出油阀垫片)均未见异常。后来又拆下喷油泵检视侧盖检查,发现第二缸的柱塞弹簧折断了两圈,柱塞被顶到上止点。由于柱塞弹簧折断,失去了工作能力,不能将处于上止点的柱塞压回到凸轮上,故第二缸不供油。当更换了新柱塞弹簧后,第二缸立即恢复了正常工作。 (2)一东风-50型拖拉机的第四缸不工作,检查后发现,是四缸的柱塞拐臂自动脱开了调节拉杆所致。重新装好柱塞拐臂,第四缸立即恢复了正常工作。柱塞拐臂自动脱出调节拉杆的原因是,调节拉杆和衬套
(1) The second cylinder of Tractor -55 tractor does not supply oil, so unscrew the outlet valve of the two cylinders and check out the check valve. The check valves (valve, valve seat, outlet valve Gaskets) were no exception. Then removed the fuel pump inspection side cover inspection and found the second cylinder plunger spring break two laps, the plunger is top dead center. As the plunger spring break, lost the ability to work, can not be at the top dead center plunger pressed back to the cam, so the second cylinder does not supply oil. When the new plunger spring was replaced, the second cylinder immediately returned to normal operation. (2) Dongfeng -50 tractor fourth cylinder does not work, check and found that the four-cylinder plunger arm automatically disconnect the adjustment rod. Reassemble the plunger arm, the fourth cylinder immediately resume normal work. The reason why the plunger arm automatically releases the adjusting rod is to adjust the rod and the bushing