For Doosan DX300LL Excavator, this reference brings together the listed repair manual material. Start with Safety and follow the relevant document section for the task.
What’s Covered Inside
Safety
Track Excavator Safety…………………………………………………………….. SP000941
Specifications
Specification for DX300LL…………………………………………………………. SP000942
General Maintenance
General Maintenance Procedures ……………………………………………… SP000016
Standard Torques …………………………………………………………………….. SP000813
Upper Structure
Cabin ………………………………………………………………………………………. SP000943
Counterweight…………………………………………………………………………… SP000944
Fuel Tank………………………………………………………………………………… SP000945
Fuel Transfer Pump …………………………………………………………………. SP000021
Swing Bearing………………………………………………………………………….. SP000022
Swing Reduction Gear ……………………………………………………………… SP000946
Lower Structure and Chassis
Track Assembly ……………………………………………………………………….. SP000947
Engine and Drive Train
Drive Coupling (Main Pump) …………………………………………………….. SP000026
Hydraulics
Hydraulic System Troubleshooting, Testing and Adjustment ……….. SP000027
Accumulator……………………………………………………………………………… SP000028
Center Joint (Swivel) ………………………………………………………………… SP000029
Cylinders………………………………………………………………………………….. SP000948
Swing Motor …………………………………………………………………………….. SP000031
Travel Motor…………………………………………………………………………….. SP000253
Main Control Valve…………………………………………………………………… SP000034
Axial Piston Pump……………………………………………………………………. SP000068
Remote Control Valve (Work Lever / Joystick) ………………………….. SP000069
Travel Control Valve (with Damper) ………………………………………….. SP000070
Solenoid Valve Assembly………………………………………………………….. SP000445
Hydraulic Schematic (DX300LL) ………………………………………………… SP000949
Electrical System
Air Conditioner …………………………………………………………………………. SP000025
Electrical System ……………………………………………………………………… SP000958
Electrical Schematic (DX300LL) ………………………………………………… SP000950
Attachments
Boom and Stick……………………………………………………………………….. SP000951
Boom and Arm (Exca. Front Option) ………………………………………… SP000952
Bucket (Exca. Front Option) ……………………………………………………… SP000072
How to Use The Guide Manual
A schematic of each of the major engine systems is provided at the beginning of the section of the manual devoted to troubleshooting and repairing that particular system.
Basic safety precautions are list in the Safety section of the Service Manual. Additional safety precautions are list in the Safety section of the owner/operation/maintenance publication. Specific safety warnings for all these publications are provided in the description of operations where hazards exist. WARNING labels have also been put on the product to provide instructions and to identify specific hazards.
Use publication K1011789E with the DX300LL model details to select the appropriate documentation. Refer to Safety within its stated document and equipment scope.








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