Liugong Excavator Pressure Switch Sensor 30B1125 Application The 30B1125 pressure switch is a 1.5 bar normally-open sensor used on LiuGong CLG835, CLG842, CLG855, CLG856 wheel loaders and 906/908/915/920/925/933 excavators, as well as on motor graders and back-hoes powered by Weichai WP6, Yuchai YC6J or Cummins 6BT engines. It monitors pilot oil, brake charge or low-pressure hydraulic circuits and closes the ground circuit to the cab alarm and ECU when pressure drops below 1.5 bar, making it a common service item across construction, quarry and agricultural fleets worldwide.
