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1.钢球锈蚀一台小四轮拖拉机液压系统能提升。松开单向阀压帽,不见液压油流出,以为是一轴108轴承损坏。拆下液压油泵检查,108轴承完好。进一步分解液压油泵,抽出柱塞,发现柱塞上部钢球与座孔粘接。经过敲打震动,钢球脱开。原来是钢球与座孔锈蚀。这主要是长期不用所致。经过研磨,更换钢球,液压系统便恢复正常。 2.油液脏稠一台小四轮拖拉机液压系统不能正常工作。当转速低时,提升臂可以间歇动作,但提升力很小;当转速高时,提升臂便停止动作。经过多方检查调整,问题没有解决。后怀疑液压油有问题(因液压油呈黑稠状),遂按说明书的规定对液压系统进行清洗换油,结果问题迎刃而解。 3.端垫松弛
1. Corrosion of steel A small four-wheel tractor hydraulic system can improve. Loosen the one-way valve pressure cap, no hydraulic oil outflow, that is a shaft 108 bearing damage. Remove the hydraulic pump check, 108 bearings intact. Further break down the hydraulic pump, pull out the plunger and found the upper plunger ball and seat hole bonding. After knocking vibration, the ball off. The original ball and seat hole corrosion. This is mainly due to long-term needlessness. After grinding, replacing the ball, the hydraulic system will return to normal. 2. Dirty oil A small four-wheel tractor hydraulic system can not work properly. When the speed is low, the lifting arm can intermittently move, but the lifting force is small; when the speed is high, the lifting arm will stop action. After many inspections and adjustments, the problem has not been solved. Suspected of hydraulic oil after the problem (due to black viscous hydraulic oil), then according to the instructions of the hydraulic system for cleaning oil change, the problem solved. 3. End pad relaxation