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一台SK350-6型挖掘机使用2年后,出现工作装置和回转不能微动。其原因很可能是先导油路有故障。先导油路的走向是:先导泵输出→先导油滤油器→8个电磁阀组集油块经液压锁(电磁润)→先导操纵阀→8个压力开关集油块→主操纵阀。产生故障的原因可能是:先导泵输出油压不足;先导滤油器堵
A SK350-6 excavator used 2 years after the emergence of working equipment and rotation can not be fretting. The reason is likely to lead the fault line. Pilot oil route is: the pilot pump output → pilot oil filter → 8 sets of electromagnetic valve oil collector set by the hydraulic lock (solenoid run) → pilot control valve → 8 pressure switch block → main control valve. Causes of failure may be: lack of pilot pump output hydraulic pressure; pilot filter plugging