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一台E516联合收割机经保养后试车,推动行驶操纵杆至前进位置(由低速到高速),机车向前走几十米即自动减速停下,这时液压油位、油压指示灯亮。把发动机熄火后,停几分钟,再启动机车又能向前走几十米再次自动停下。检查油位正常,再次清洗滤清器,故障仍未能排除。按液压油指示灯亮分析原因有二,一是油面过低:二是控制油路压力低于784千帕(8公斤力/厘米~2,测量点MS2)。但初步检查油面正常,那么控制油路油压低的原因可能有如下几方面:①过滤器芯堵塞;②VD3、VD4压力溢流阀垫启或弹
An E516 combine harvester after the test run to promote the driving lever to the forward position (from low to high speed), the locomotive to move forward tens of meters automatically decelerated stop, then the hydraulic oil level, hydraulic indicator light. Turn off the engine, stop a few minutes, and then start the locomotive can move forward tens of meters automatically stop again. Check the oil level is normal, filter cleaning again, the fault still can not be ruled out. Press the hydraulic oil indicator light analysis for two reasons, one is too low oil: the second is to control the oil pressure less than 784 kPa (8 kg force / cm ~ 2, measuring point MS2). But preliminary check the oil level is normal, then the reason for low oil pressure control circuit may have the following aspects: ① filter plugged; ②VD3, VD4 pressure relief valve pad or bomb