Table of Contents:-

Safety
Track Excavator Safety …………………………………………………………….. SP000014
Specifications
Specification for DX225NLC ……………………………………………………… SP001010
General Maintenance
General Maintenance Procedures ……………………………………………… SP000016
Standard Torques …………………………………………………………………….. SP000813
Upper Structure
Cabin ………………………………………………………………………………………. SP000943
Counterweight…………………………………………………………………………… SP000940
Fuel Tank………………………………………………………………………………… SP001014
Fuel Transfer Pump …………………………………………………………………. SP000021
Swing Bearing………………………………………………………………………….. SP001109
Swing Reduction Gear ……………………………………………………………… SP000915
Lower Structure and
Chassis
Track Assembly ……………………………………………………………………….. SP000911
Engine and Drive Train
Drive Coupling (Main Pump) …………………………………………………….. SP001069
Hydraulics
Hydraulic System Troubleshooting, Testing and Adjustment ……….. SP000913
Accumulator……………………………………………………………………………… SP000028
Center Joint (Swivel) ………………………………………………………………… SP000029

Cylinders………………………………………………………………………………….. SP000030
Swing Motor …………………………………………………………………………….. SP001013
Travel Motor…………………………………………………………………………….. SP000922
Gear Pump………………………………………………………………………………. SP000931
Main Control Valve…………………………………………………………………… SP000034
Axial Piston Pump……………………………………………………………………. SP001008
PTO Server ……………………………………………………………………………… SP000933
Remote Control Valve (Work Lever / Joystick) ………………………….. SP000069
Travel Control Valve (with Damper) ………………………………………….. SP000070
Solenoid Valve Assembly………………………………………………………….. SP000445
Breaker EPPR Valve (Opt)……………………………………………………….. SP000192
Hydraulic Schematic (DX225NLC)……………………………………………… SP001057
Electrical System
Electrical System ……………………………………………………………………… SP000935
Electrical Schematic (DX180LC/DX225LC/DX225NLC/DX255LC) …. SP000936
Attachments
Boom and Arm………………………………………………………………………… SP000937
Bucket……………………………………………………………………………………… SP000939

Doosan DX225NLC Manual Instruction Extract:

Hydraulic Oil
As the products are shipped with hydraulic oil in the hydraulic motor case being drained, be sure to fill the case with hydraulic oil before operation.
1. Selection of Hydraulic Oil
Take care the following matters when selecting hydraulic oil for motor.
A. Use hydraulic oil equal to VG32-VG56.
B. Hydraulic oil should be of wear resistance.
C. Contact us when selecting other hydraulic oil than those in the table below.

2. Check and Change of Hydraulic Oil Change oil according to the following intervals, though its frequency depends on operation conditions.
The following is the recommended interval of changing hydraulic oil.
A. Interval – 1000 hours or 1 year

How to Use The Doosan DX225NLC Excavator Guide Manual:

This manual provides information for servicing the DX225NLC Doosan Excavator. All service procedures are broken down into detailed steps, listed in their recommended sequence. The manual uses both photographs and drawings to help locate and itemize components. The table of Contents on the preceding pages is your best tool for finding the service procedure you need. Be certain to observe all Safety information included in these pages.

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 Doosan DX225NLC Excavator 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.