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1.挖掘机无回转1台卡特320C型挖掘机,作业中监控器发出报警声,但无任何故障代码;操纵回转手柄时发现无法回转。启动发动机,用CAT ET(电子检则仪)检查故障代码及各压力开关是否工作正常。结果检测到有2个压力开关没有工作,显示压力低,直线行驶电磁阀未工作。从监控器中发现铲斗油路安全阀压力过低,初步判断是停机制动没有释放,可能原因是回转压力开关未工作。
1. Excavator no turning 1 Carter 320C excavator, the monitor alarm during operation, but without any fault code; rotary handle can not be found when turning. Start the engine and check if the fault code and the pressure switch are working properly with CAT ET (Electronic Checker). As a result, two pressure switches were detected as not working, the pressure was low, and the straight-line running solenoid valve did not work. From the monitor found bucket oil pressure relief valve is too low, the initial judgment is that the brake is not released, probably because the rotary pressure switch is not working.