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1、 一台果园牌四轮农用运输车大修后没多久机手保养了喷油泵,结果出现了启动困难的故障。修理工检查后,发现喷油泵处于不供油状态。进而检查,发现喷油泵的限压阀弹簧弹性过弱,据机手介绍,保养喷油泵时,不慎丢失了原装的限压阀弹簧弹性过弱,造成开启压力过低,出油阀打不开,启动不着火,经过更换标准的限压阀弹簧后,该机能顺利启动了。 2、一位机手对金蛙牌三轮农用运输车离合器保养后,该机出现了只能分离、不能结合的现象。修理工初步分析该车出现这种现象的原因可能是:①装上离合器皮带轮盖以后,由于没有对称均匀拧紧螺栓,致使垫圈和防尘圈发生位移而偏斜:②调整螺杆没有套入防尘圈中,把防尘圈顶歪了,从而造成离合器在工作过程中被卡死,不能接合。为此,重新拆开离合器,用正确的方法安装后,该车离合器能工作正常了。
1, an orchard brand four-wheeled agricultural truck did not take long after the overhaul of the maintenance of the fuel pump, resulting in a difficult start-up failure. After checking with the mechanic, he found that the fuel injection pump was in a non-fuel condition. Then check and found that the fuel injection valve pressure limiting valve spring is too weak, according to the hand introduced, maintenance pump, inadvertently lost the original pressure limiting valve spring is too weak, causing the opening pressure is too low, the valve does not play Open, start fire, after the replacement of the standard pressure-limiting valve spring, the machine can start smoothly. 2, a hand on the Jinfang brand three wheeled agricultural truck clutch maintenance, the aircraft appeared only separated, can not be combined phenomenon. A preliminary analysis of the car mechanic may be the reason for this phenomenon: ① fitted clutch pulley cover, because there is no uniform symmetrical tighten the bolt, resulting in washers and wiper displacement and deflection: ② adjusting screw is not set into the dust ring In the top of the dust ring crooked, resulting in the clutch stuck in the course of their work can not be joined. To this end, re-open the clutch, with the correct method of installation, the car clutch to work properly.