论文部分内容阅读
1.整机动作缓慢一台日立EX200-5型挖掘机漏油严重,修理时更换全部油封及老化油管后,整机动作缓慢。修理人员认为更换多路阀油封时安装得不好,于是将多路阀全部拆检一遍,在确认没有问题后,动作仍然缓慢。无奈将主泵调节器全部拆检一遍,没有发现问题。接着又拆下主泵上液压试验台检测,结果流量、压力正常。最后估计先导阀及先导压力有问题,通过检查全部正常。如此折腾一周也没有修理好。正常思路,整机动作缓慢应检查
1. The whole machine slow A Hitachi EX200-5 excavator serious oil leaks, repairs, replace all the oil seal and the aging of the tubing, the whole slow motion. Repair staff think that the replacement of multi-valve seal installed badly, so all demolition multi-channel valve again, no problem in the confirmation, the action is still slow. Helpless to dismantle the main pump regulator all over again, did not find the problem. Then remove the main pump hydraulic test bed test, the results flow, pressure normal. Finally, there is a problem with the pilot valve and pilot pressure. All the tests are normal. So toss week is not repaired. Normal thinking, the entire movement should be checked slowly