Doosan Machinery Maintenance Instructions

  This article mainly introduces the Cummins M11 series engine hydraulic pump, sensor wiring harness and internal actuator wiring harness   2023.07 Doosan DMS-5 Data Monitoring System Diagnostic Software   (1) Disassembly of hydraulic pump ① Remove the two bolts, hydraulic pump and sealing gasket, see Figure 2-61.   ② Remove the three mounting bolts of the hydraulic pump drive device, see Figure 2-62. Install the slide hammer and turning tool on the hydraulic pump drive adapter. For SAE "A" drive units, use two M10-1.50 ?0 bolts; for SAE "B" type drive unit, using two M12-1.75 ?0 bolts.   ③ Remove the hydraulic pump drive adapter, O-ring and drive gear, see Figure 2-63. Doosan Diagnostic Tool UVIM Support Doosan Excavators High Quality   (2) Disassembly of sensor wire harness and internal actuator wire harness     ① Remove the sensor harness and actuator harness connectors and mark them, see Figure 2-64.   ② Remove the wiring harness bracket from the cylinde

  This article mainly introduces how to deal with the problem that the oil-water separator alarm keeps popping up after the DX215-9C Doosan Construction Machinery model is powered on, the engine accelerates normally, and the buzzer keeps sounding.       2023.07 Doosan DMS-5 Data Monitoring System Diagnostic Software   Inspection Method:       1) Check that the oil-water separator filter element is not clogged, and the fault persists after draining    the water;       2) The fault will disappear intermittently due to vibration during driving;         3) Check the voltage of the water level sensor and find that when there is a fault, the sensor S terminal    0.85YB line has always been an abnormal ground signal. This terminal should be 3.0-3.8V when there    is no water;     Doosan Diagnostic Tool DDT G2 SCAN( ECU ,DCU)Software 2016     4) The fault persists after unplugging the sensor plug, so it is judged that the alarm should be caused by a circuit fault.             Repair res

  This article introduces how to solve the problem of no movement of Doosan excavator.   Note: All models (except S55-V) After the engine is started, press the safety lever on the left console and operate the left and right handles. The whole vehicle will not move.       Doosan Diagnostic Tool UVIM Support Doosan Excavators High Quality     Doosan Diagnostic Tool DDT G2 SCAN( ECU ,DCU)Software 2016    1. Checking essentials     a. Check that 6# fuse is not burned out, it is normal.     b. When it is infinity, it is normal when it is closed and it is 0.   c resistance is 13.5 ohms normal.     d. Check that the valve core of the work cut-off solenoid valve is functioning normally. After e was  disassembled, it was found that the spring in the relief valve was broken.     2023.07 Doosan DMS-5 Data Monitoring System Diagnostic Software 2. Reason:  The spring in the relief valve is broken, causing the pilot pressure to be too low, unable to push the valve  core to move, and the enti