Doosan DX225LC-3 Shop Manual

Doosan DX225LC-3

878 pages

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Shop

Manual

Doosan Infracore

Construction Equipment

DX225LC-3

Serial Number 1001 and Up

Serial Number 50001 and Up (Europe Only)

950106-00364E

March 2012

EXCAVATOR

Table of Contents

Table of Contents13
- Applicable Models15
- Safety Instructions15
- Safety Messages16
- General17
- Safety Decals17
- Transportation30
- Operation32
- Maintenance49
Specifications for Dx225Lc-381
- Specifications for DX225LC-383
- Standard)98
General Maintenance Instructions111
- Applicable Models113
- General Maintenance Instructions113
- Safety Instructions113
- Welding Precautions and Instructions114
- Hydraulic System - General Precautions115
- Maintenance Service and Repair Procedure117
  - General Precautions117
- Hydraulic System Cleanliness and Oil Leaks118
  - Maintenance Precautions for Hydraulic System Service10118
  - Oil Leakage Precautions119
- Cleaning and Inspection120
  - General Instructions120
  - Bearing Inspection121
Standard Torques131
- Applicable Models133
- Safety Instructions133
- Standard Torques133
- Torque Values for Standard Metric Fasteners134
- Torque Values for Standard U.S. Fasteners135
- Type 8 Phosphate Coated Hardware137
- ORFS Swivel Nut Recommended Torque138
- Torque Values for Hose Clamps138
- Torque Values for Split Flanges139
- Torque Wrench Extension Tools140
Table of Contents149
- Applicable Models151
- Safety Instructions151
- Cabin Identification152
  - Rollover Protective Structure (ROPS)152
- Removal154
- Installation158
Counterweight163
- Counterweight165
Fuel Tank173
- Applicable Models175
- Fuel Tank175
- Safety Instructions175
- General Description176
  - Parts List176
  - Specifications177
- Removal178
- Installation182
- Start-Up Procedures185
Fuel Transfer Pump (Option)189
- Applicable Models191
- Fuel Transfer Pump (Option)191
- Safety Instructions191
- General Description192
- Theory of Operation192
- Replacement of Rotor and Vane194
- Troubleshooting194
- Replacement of Armature195
- Replacement of Rear Cover195
Swing Bearing199
- Applicable Models201
- Safety Instructions201
- Swing Bearing201
- Swing Bearing Maintenance202
Table of Contents211
- Applicable Models213
- Safety Instructions213
- General Description214
- Track Tension215
- Cleaning and Inspection217
- Tolerances)217
- Track Shoes and Links223
  - Track Removal223
  - Track Installation224
- Front Idler Roller225
- Lower Roller230
- Upper Roller234
- Track Spring and Track Adjusting Cylinder238
  - Parts List238
Engine Coolant Heater (Option)245
- Applicable Models247
- Engine Coolant Heater (Option)247
- Safety Instructions247
- Disassembly and Assembly248
Table of Contents263
- Applicable Models265
- Safety Instructions265
- Drive Coupling266
- Special Tools267
- Installation of Drive Coupling268
  - Installation Procedure270
Hydraulic System Troubleshooting, Testing and Adjustment/Hydraulic System Troubleshooting, Testing and Adjustment275
- Applicable Models277
- Hydraulic System Troubleshooting, Testing and Adjustment277
- Safety Instructions277
- Hydraulic System - General Notes278
- Hydraulic Schematic279
  - General Notes279
- Operation of Working Components281
- Procedural Troubleshooting Baseline Recommendations286
  - Initial Checks and Tests to Establish Operating Condition of the Excavator286
- Pilot Pressure288
  - Adjustment and Testing288
- Power Mode Valve289
  - Current Signal and Hydraulic Pressure Adjustments289
- Pressure up Valve290
  - Checks and Adjustments290
- Pump Input Power Control292
- Flow Meter and Flow Meter Kit Installation and Testing295
- Swing System Troubleshooting297
  - Precautions/Initial Checks297
  - Swing Relief Valve Checking and Adjustment298
- Troubleshooting - Swing Gearbox300
- Troubleshooting - Hydraulic Problems301
- Troubleshooting - Control Valve303
- Troubleshooting - Travel Control Valve304
- Troubleshooting - Joystick Control Valve305
Table of Contents309
- Applicable Models311
- Safety Instructions311
- General Description312
  - Specifications314
Center Joint (Swivel)317
- Applicable Models319
- Center Joint (Swivel)319
- Safety Instructions319
- General Description321
  - Parts List322
- Troubleshooting, Testing and Adjustment323
  - Inspection323
  - Testing323
- Disassembly324
- Reassembly327
Table of Contents331
- Safety Instructions333
- Applicable Models333
- General Description334
  - Theory of Operation334
  - Parts List336
- Special Tools and Materials342
- Disassembly359
- Reassembly364
Swing Device371
- Swing Device372
- Applicable Models373
- Safety Instructions373
- Indication of Type374
- Specifications375
- Structure and Principle of Operation376
- Cautions for Operation386
- Troubleshooting390
- Disassembly and Reassembly394
Travel Device421
- Applicable Models423
- Safety Instructions423
- Travel Device423
- Specifications424
- TM40VD Operation Manual424
- Indication of Type425
- TM40VD Maintenance Instructions444
Main Pump479
- Default Chapter481
- Reassembly494
- Disassembly494
  - Pump Body Maintenance Standards494
    - Change Standards of Worn Parts494
    - Fix Standards of Cylinder Block, Valve Plate, and Swash Plate (Shoe Plate)495
Table of Contents499
- Applicable Models501
- Safety Instructions501
- Pump Maintenance502
- Disassembly503
- Reassembly505
- Maintenance Standards of Pump Body506
Gear Pump511
- Gear Pump513
Main Control Valve523
- Applicable Models525
- Main Control Valve525
- Safety Instructions525
- General Description526
- Troubleshooting, Testing and Adjustment564
  - Troubleshooting564
  - Adjustment of Valves565
- Removal567
- Disassembly568
- Tolerances)577
Remote Control Valve (Work Lever / Joystick)/Remote Control Valve (Work Lever / Joystick)593
- Applicable Models595
- Remote Control Valve (Work Lever / Joystick)595
- Safety Instructions595
- General Description597
- Tools and Materials600
- Disassembly601
- Reassembly604
- Start-Up Procedures612
Travel Control Valve (with Damper)615
- Applicable Models617
- Safety Instructions617
- Travel Control Valve (with Damper)617
- General Description618
- Causes of Faults and Measures621
- Removal625
- Disassembly628
- Cleaning and Inspection (Wear Limits and Tolerances)630
- Tolerances)631
Solenoid Valve Assembly643
- Applicable Models645
- Safety Instructions645
- Solenoid Valve Assembly645
- 5-Solenoid Valve646
Breaker Eppr Valve (Option)655
- Breaker EPPR Valve (Option)656
- Applicable Models657
- Safety Instructions657
- Structure658
  - Parts List658
- Cautions for Operation659
- Functions and Operation659
- Maintenance Instructions660
Dozer Valve667
- Applicable Models669
- Dozer Valve669
- Safety Instructions669
- Structure Diagram670
- Hydraulic Pressure Circuit Diagram671
- Performance Specification671
- Parts List672
- Disassembly673
- Disassembly and Assembly Tools673
- Assembly Method675
Electrical System691
- Applicable Models695
- Electrical System695
- Safety Instructions695
- Introduction696
- Electrical Supply System698
- Engine Starting Circuit700
  - Start Operation700
  - After Start702
- Engine Preheating System704
- Engine Stop706
- Charging System708
- Monitoring System709
  - Instrument Panel709
  - Functional Check710
  - Monitoring System Schematic712
- Operation714
  - Instruments714
- Warning and Indicator Lights716
  - Indication of Warning Lights716
  - Indication of Multifunction Gauge718
- Graphic Information Area Display720
  - Overview720
  - Main Menus for the Graphic Display Area720
  - Menu Selector Buttons720
- User Menu721
  - User Menu - Access and Escape Methods721
- Special Menu753
  - Entering/Accessing and Exiting/Escaping Menus753
  - Special Menu Selections754
- Electronic Hydraulic Control System (E-EPOS)780
  - Control System Schematic780
- Power Plus Mode Control782
  - Operation784
- Power Mode Control - Circuit Diagram786
- Engine Control System788
- Engine Control Dial789
- Engine Control Circuit Diagram790
- Automatic Deceleration Control (Auto Idle Control)792
- Engine Overheat Protection System794
- Power Boost Mode796
  - Operation796
  - Power Boost Control - Circuit Diagram798
- Automatic Travel Speed Control800
  - Automatic Travel Speed Control - Circuit Diagram802
- Self-Diagnostic Function803
  - E-EPOS Controller803
- Air Conditioner System805
  - Outline805
  - Internal and External Filters806
  - Air-Conditioning System Layout808
  - Air Conditioner/Heater Circuit Diagram809
  - Air Conditioner/Heater Unit810
  - Ambient Air Temperature Sensor815
  - Sun Sensor816
  - Control Panel816
  - Compressor824
  - Receiver Dryer824
- Troubleshooting825
- Weight of R134A Gas Used in Machines827
- Refrigerant System Repairs828
  - Refrigerant Safe Handling Procedures828
  - Repair and Replacement Procedure829
  - Refrigerant Recovery831
  - Vacuuming Refrigerant System831
  - Leakage Check833
  - Refrigerant Charging833
  - Inspecting System for Leakage835
- Wiper System836
  - Wiper Circuit836
  - Wiper Operation837
- Lighting System840
  - Lighting System Circuit Diagram840
  - Kind of Light841
  - Operation841
- Overload Warning Device842
  - Overload Warning Device Circuit Diagram842
- Audio Controller843
  - Audio Controller Circuit Diagram843
  - Boom and Arm859
  - Safety Instructions859
  - Applicable Models859
  - Front Attachment Pin Specifications860
  - Front Attachment - Removal and Installation862
    - Arm Removal Procedure862
    - Boom Removal Procedure864
  - Installation865
    - Arm Installation Procedure865
    - Boom Installation Procedure865
  - Start-Up Procedures866
  - Bucket Tooth Inspection and Replacement872
  - Bucket O-Ring Replacement873
  - Attachments875

Other manuals for Doosan DX225LC-3

Operation & Maintenance Manual430 pages

Questions and Answers:

H
helensmithJul 26, 2025
What to do if dirt is lodged in the rotor or vanes of my Doosan DX225LC-3?
- H
  Heather HudsonJul 26, 2025
  If foreign materials are causing heat due to being lodged between the rotor and/or vanes, remove the pump cover and check the rotor and vane. If any pump parts or components become lost, damaged or inoperable, immediately replace them with new ones.

Doosan DX225LC-3 Specifications

General

Brand	Doosan
Model	DX225LC-3
Category	Excavators
Language	English

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