Doosan DX225LC-3 Manual

Operation &
Maintenance
Manual
DX225LC-3
Serial Number 1001 and Up
Serial Number 50001 and Up (Europe Only)
950106-00365ANA-1
January 2015
Excavator

Copyright Doosan 2011 Operation and Maintenance Manual
Operation & Maintenance Manual
DX225LC-3 Excavator
Serial Number 1001 and Up
Serial Number 50001 and Up (Europe Only)
950106-00365ANA-1
January 2015
Copyright DOOSAN 2015
DOOSAN and the DOOSAN logo are registered
trademarks of DOOSAN Corporation in the United
States and various other countries around the
world.

Table of Contents
I
DX225LC-3
Table of Contents
Foreword ....................................................................................0-1
AEM Safety Manual (North America Only) ........................................0-4
Federal Emission Control Systems....................................................0-5
Safety..........................................................................................1-1
Safety Decals.....................................................................................1-2
General............................................................................................ 1-16
Transportation.................................................................................. 1-29
Operation.........................................................................................1-31
Maintenance ....................................................................................1-48
Environment and Circumstances.....................................................1-64
Operating Controls....................................................................2-1
Component Locations........................................................................2-2
Operator's Area..................................................................................2-4
Operational Controls and Panels.......................................................2-6
Display Monitor................................................................................2-24
User Menu .......................................................................................2-43
Heater and Air Conditioner Control Panel........................................2-74
Stereo ..............................................................................................2-80
Miscellaneous Electrical Devices.....................................................2-81
Seat Adjustment...............................................................................2-83
Ceiling Cover ...................................................................................2-87
Front Windows.................................................................................2-88
Door Side Latch...............................................................................2-90
Cabin Storage Compartments .........................................................2-91
Sunglass Case.................................................................................2-91

DX225LC-3Table of Contents
II
Sun Visor .........................................................................................2-92
Hanger............................................................................................. 2-93
Cup Holder.......................................................................................2-93
Emergency Exit Glass Breaking Tool ..............................................2-93
Miscellaneous Access Covers and Doors........................................2-94
Air Gun and Compressor (Optional) ...............................................2-95
Operation....................................................................................3-1
To Operate a New Excavator.............................................................3-1
Starting and Stopping Engine............................................................3-2
Safety Lever.....................................................................................3-16
Travel...............................................................................................3-17
Operating Instructions...................................................................... 3-23
Operating Precautions.....................................................................3-42
Parking Excavator............................................................................3-50
Towing Procedure............................................................................3-51
Attachments.....................................................................................3-52
Hydraulic Attachments (Optional).................................................... 3-55
Lifting Objects..................................................................................3-67
Operation Under Abnormal Conditions............................................3-69
Long Term Storage..........................................................................3-77
Inspection, Maintenance and Adjustment...............................4-1
Maintenance Information ...................................................................4-1
Machine Setup Position for Maintenance ..........................................4-5
Maintenance Handling Access...........................................................4-7
Handling Oil, Fuel, Coolant................................................................4-8
Electrical System Maintenance........................................................4-13
Recommend Fuel, Coolant, and Lubricant ......................................4-14
Fluid Capacities ............................................................................... 4-18
Table of Recommended Lubricants.................................................4-19
Maintenance Intervals......................................................................4-21

Table of Contents
III
DX225LC-3
10 Hour / Daily Service....................................................................4-24
50 Hour / Weekly Service ................................................................4-36
250 Hour / Monthly Service..............................................................4-40
500 Hour / 3 Month Service.............................................................4-46
1,000 Hour / 6 Month Service..........................................................4-57
2,000 Hour / Yearly Service.............................................................4-66
4,000 Hour / Biennial Service ..........................................................4-73
4,500 Hour / Biennial Service ..........................................................4-74
12,000 Hour / 6 Year Service...........................................................4-75
Air-conditioning System...................................................................4-76
Bolt and Nut Inspection....................................................................4-77
Bucket..............................................................................................4-86
Electrical System .............................................................................4-88
Engine Cooling System....................................................................4-92
Fuel Transfer Pump (Optional) ........................................................4-96
Handling of Accumulator..................................................................4-99
Track Tension................................................................................4-100
Venting and Priming Hydraulic System..........................................4-102
Maintenance in Special Conditions................................................4-104
Transportation ...........................................................................5-1
Loading and Unloading......................................................................5-1
Lifting Machine...................................................................................5-8
Troubleshooting ........................................................................6-1
Electrical System ...............................................................................6-1
Engine................................................................................................6-2
Turbocharger .....................................................................................6-6
Cooling Fan........................................................................................6-7
Lubrication System ............................................................................6-7
Hydraulic System...............................................................................6-8
Air Compressor (Optional)................................................................. 6-9

DX225LC-3Table of Contents
IV
Swing System.................................................................................. 6-10
Travel System..................................................................................6-10
Specification ..............................................................................7-1
Standard Specification.......................................................................7-1
Overall Dimensions............................................................................7-2
Disassembled Parts, Dimension and Weight.....................................7-4
Ground Pressure................................................................................7-6
Digging Force..................................................................................... 7-7
Working Range.................................................................................. 7-8
Excavator Rated Lift Capacity Tables..............................................7-10
Approximate Weight of Workload Materials.....................................7-30
Index ...........................................................................................8-1

Foreword
0-1
DX225LC-3
Foreword
This Operation and Maintenance Manual was written to give
owner or operator instructions on safe operation and
maintenance of DOOSAN equipment. READ AND
UNDERSTAND THIS OPERATION AND MAINTENANCE
MANUAL BEFORE OPERATING YOUR DOOSAN
EQUIPMENT. Keep this manual in the cabin so it is always
available. If it is lost, order another one from your DOOSAN
distributor.
If there are any questions, contact your DOOSAN distributor.
This manual may illustrate options and accessories not installed
on your equipment.
Any modification made without written authorization or approval
from DOOSAN can create a safety hazard.
Always replace parts with genuine DOOSAN parts or DOOSAN
authorized replacement parts.
Intended Use
The machine is intended to be used under normal conditions for
applications described in this manual. If it is used for other
purposes, or in potentially hazardous environments, special
precautions must be followed and the machine must be
equipped for such use. Examples include, but are not limited to,
are: falling object guards, work lights, etc. Do not engage in
prohibited uses as described in this manual. Contact your
DOOSAN distributor for further information.
Engine and Emission Control System
Maintenance
Proper inspection, maintenance and repair is essential to
keeping engine and machine systems properly operating. This
includes proper inspection and maintenance of the machine's
emission control system. This could include machine and engine
components, such as an EGR (Exhaust Gas Recirculation)
system, fuel system, turbocharger, electrical system, air intake
system and/or cooling system.
As a heavy-duty off-road diesel engine owner, you are
responsible for performing required maintenance. The required
maintenance procedures are outlined in this Operation and
Maintenance Manual, or Shop Manual. Do not remove, alter, or
render inoperative, any emission control system.

DX225LC-3Foreword
0-2
Machine Capacity
Do not exceed machine capacity by modifying machine or using
unapproved attachments.
Exceeding machine capacity can adversely affect machine
performance characteristics such as: stability, system
certifications such as brakes and steering, the Rollover
Protective Structure (ROPS) and can result in death or serious
injury. Contact your DOOSAN distributor for further information.
Product Identification Number (PIN)
A PIN number is stamped on upper frame under boom foot
(Figure 1). It is also stamped on a product identification plate
(Figure 2) on outside of cabin on right-hand side.
NOTE: Record these numbers and their locations. These will
be required whenever warranty or service work is
requested. Keep these numbers on file in case
machine is stolen.
FG018597
Figure 1
EX1300482
Doosan Infracore Co., Ltd.
7-11, Hwasu-dong, Dong-gu,
Incheon, Korea
PRODUCT IDENTIFICATION NUMBER
⣆㔲#⎇ᵮ#ᴲ㛢
MADE IN KOREA
⣆㔲ᬯ
MODEL
950209-02977
Figure 2

Foreword
0-3
DX225LC-3
Component Model and Serial Numbers
There are model and serial numbers on each traceable
component of machine. For example, the engine serial number
is stamped on rear left side of the engine block, above the
starter. Additional engine information is described on a label
(Figure 3) on head cover.
Record these numbers and their locations. These will be
required whenever warranty or service work is requested.
Safety Messages
Safety messages and safety decals included in this manual and
on the machine provide instructions how to operate, service and
maintain the machine. Safety messages and safety decals
indicate potential hazards and describe safety precautions
required to avoid hazards. Operator and maintenance personnel
should read and understand these safety messages and decals
before beginning operation or maintenance.
Signal Words
The signal words "DANGER", "WARNING", "CAUTION" are
used throughout safety messages and safety decals in this
manual or on the machine. They indicate an existence of, and
the relative seriousness of, a hazard. All three indicate that a
safety risk is involved. Observe the precautions indicated
whenever a Safety Alert Symbol is present, no matter which
signal word appears next to it.
FG019408
Figure 3
SAFETY ALERT SYMBOL
Be Prepared - Get to Know All Operating and Safety
Instructions.
This is a Safety Alert Symbol. Wherever it appears in this
manual or on safety decals on the machine, you must be
alert to the potential for personal injury or accidents.
Always observe safety precautions and follow
recommended procedures.
DANGER
DANGER - This signal word is used on safety messages and
safety labels and indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury.

DX225LC-3Foreword
0-4
Other Signal Words
In addition to safety signal words, the following signal words are
used to indicate proper and effective use of machine.
NOTE: The word "NOTE" identifies information for effective
use.
AEM SAFETY MANUAL 
(NORTH AMERICA ONLY)
The AEM Safety Manual delivered with the machine gives
general safety information.
The AEM Safety Manual must be read and understood before
beginning operation or maintenance and is not intended to
replace the Operation and Maintenance Manual delivered with
the machine.
WARNING
WARNING - This signal word is used on safety messages and
safety labels and indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
CAUTION
CAUTION - This signal word is used on safety messages
and safety labels and indicates a potentially hazardous
situation which, if not avoided, could result in minor or
moderate injury.
IMPORTANT
This signal word identifies procedures which must be
followed to avoid damage to machine.
Figure 4

Foreword
0-5
DX225LC-3
FEDERAL EMISSION CONTROL
SYSTEMS
Limited Warranty for Non-road Engines (CI)
Owner’s Warranty Rights and Obligations
The U.S. Environmental Protection Agency (EPA) and DOOSAN INFRACORE are pleased to explain the Federal
Emission Control System Warranty on your 2011 and later non-road engine. DOOSAN INFRACORE warrants the
engine was designed, built and equipped so as to conform at the time of sale with all applicable regulations of the
EPA and of the California ARB. In California, new heavy-duty off-road engines must be designed, built and
equipped to meet the state’s stringent anti-smog standards.
DOOSAN INFRACORE must warrant to the initial owner, and each subsequent owner, the emission control
system on your engine for the periods of time listed below provided there has been no abuse, neglect, improper
maintenance or unapproved modifications of your engine. Your emission control system may include those parts
listed below:
Fuel Metering System
Fuel Injection System
Air Induction System
Intake Manifold
Turbo Charger
Charge Air Cooling Systems
Catalyst or Thermal Reactor System
Exhaust Manifold
Exhaust Gas Recirculation (EGR) System
EGR Valve
EGR Cooler
Aftertreatment System
Diesel Oxidation Catalyst (DOC)
Diesel Particulate Filter (DPF)
Miscellaneous Items Used In The Emission Control Systems
Vacuum, Temperature and Time Sensitive Valve and Switches
Electronic Control Units, Sensors, Solenoids and Wiring Harnesses
Hoses, Clamps, Fittings and Tubing
Pulleys, Belts and Idlers
Emission Control Information Labels

DX225LC-3Foreword
0-6
Where a warrantable condition exists, DOOSAN INFRACORE CONSTRUCTION EQUIPMENT AMERICA
(hereafter "DICEA") will repair your heavy-duty off-road engine at no cost to you including diagnosis, parts, and
labor.
Manufacturer’s Warranty Coverage
The 2011 and later heavy-duty off-road engines are warranted for five years or 3,000 hours of operation,
whichever occurs first. If any emission-related part on your engine is defective, the part will be repaired or
replaced by DICEA.
The warranty period shall begin on the date the machine is delivered to the first retail customer.
Owner’s Warranty Responsibilities
As the heavy-duty off-road engine owner, you are responsible for the performance of the required maintenance
listed in the Operation and Maintenance Manual. DOOSAN INFRACORE recommends that you retain all
receipts covering maintenance on your heavy-duty off-road engine, but DOOSAN INFRACORE cannot deny
warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance.
As the heavy-duty off-road engine owner, you should however be aware that DOOSAN INFRACORE may deny
you warranty coverage if your heavy-duty off-road engine or a part has failed due to abuse, neglect, improper
maintenance or unapproved modifications.
Your engine is designed to operate on Ultra Low Sulfur Diesel Fuel Only. Use of any other fuel may result in
your engine no longer operating in compliance with the EPA’s emissions requirements.
You are responsible for initiating the warranty process. The EPA suggests that you present your heavy duty off-
road engine to a DOOSAN INFRACORE dealer as soon as a problem exists. The warranty repairs should be
completed by the dealer as expeditiously as possible.
If you have any questions regarding your warranty rights and responsibilities, you should contact your nearest
authorized DOOSAN INFRACORE dealer or call DICEA at 800-743-4340.

Safety
1-1
DX225LC-3
1Safety

DX225LC-3Safety
1-2
SAFETY DECALS
Safety decals are attached to the machine to alert the operator
or maintenance person about potential hazards, the
consequences of potential injury, and instructions and/or actions
required to avoid the hazard. The location of the safety decals
and the description of the decals are reviewed in the following
section. Please become familiarized with all safety decals and
their messages.
Make sure that all the safety decals are in their correct location
and legible. Clean or replace the safety decals if they are
damaged, missing, or the texts and pictorials are not legible.
When you clean the safety decals, use a soft cloth, water, and
soap. Do not use solvent, gasoline, or other harsh chemicals to
clean the safety decals because this could loosen the adhesive
that secures the decals to the machine. Remember, if a safety
decal is attached to a part that is replaced, install a new safety
decal on the replacement part.
This machine uses safety decals with and without text. The type
and number of safety decals can vary depending upon
geographical regions and machine models.
Safety Decals With Text
Safety decals with text consist of a signal word, pictorial and a
text message panel. In some cases, a pictorial panel may not be
part of the safety decal.

Safety
1-3
DX225LC-3
Safety Decals Without Text (No-Text)
Safety decals without text consist of a safety sign and safety
information panel. The safety sign panel is located at the top or
left side and the safety information panel is located at the bottom
or right side of the decal depending on its configuration. The
safety sign panel uses a black triangular band and a pictorial to
identify the hazard and the potential consequences of the failure
to follow instructions. The safety information panel uses
pictorials and/or prohibition signs to identify the actions
necessary to avoid the hazard.
Horizontal Configuration
Vertical Configuration
Hazard
Panel
Avoidance
Panel
Hazard
Panel Avoidance Panel
FG018723
Figure 1

DX225LC-3Safety
1-4
Information and Location for Safety Decals
EX1402409
24 21 15 16 1
25
Figure 2

Safety
1-5
DX225LC-3
Information and Location for Safety Decals (Continued)
465
12
EX1402395
19, 7, 8
Figure 3

DX225LC-3Safety
1-6
1. General Hazard (950205-03804)
WARNING
AVOID DEATH OR SERIOUS INJURY
• Never use excavator without instructions.
• Read Operation & Maintenance Manual before
operation.
•Sound the horn to alert bystanders before
operating.
•Always fasten your seat belt.
• Explosion or electrocution can occur if machine
contacts utility lines or pipes. Check for overhead
or underground lines before operating.
• Secure and lock front window when it is in raised
position.
• Attachment interference can cause death, serious
injury or machine damage. Check attachment to
machine clearance through full working cycle
before operation.
• Keep bystanders out of swing area and travel
path and always look in the travel direction.
• Ensure mirrors and rear view camera are clean
and working properly.
•Never operate machine from outside the
operator's position.
• TO LEAVE THE EXCAVATOR:
1) Lower the attachment and dozer blade (if
equipped) to the ground and make sure all
controls are in neutral.
2) Stop engine and remove key.
3) Lower safety lever to LOCK position.
EX1301176
1
2
3