Operation and Maintenance Manual

950106-00284E

Serial Number 8340 and Up

July 2010

DX300LC

DOOSAN reserves the right to improve our products in a continuing process to provide the best possible productto the market place. These improvements can be implemented at any time with no obligation to change materialson previously sold products. It is recommended that consumers periodically contact their distributors for recentdocumentation on purchased equipment.

This documentation may include attachments and optional equipment that is not available in your machine'spackage. Please call your distributor for additional items that you may require.

Illustrations used throughout this manual are used only as a representation of the actual piece of equipment, andmay vary from the actual item.

Copyright Doosan 2010950106-00284E Operation and Maintenance Manual

Table of Contents

Safety..........................................................................................1-1

To the Operator of a DOOSAN Excavator ......................................... 1-1

Location of Safety Labels................................................................... 1-4

Visibility Information......................................................................... 1-15

Summary of Safety Precautions for Lifting in Digging Mode............ 1-17

Unauthorized Modifications.............................................................. 1-18

General Hazard Information............................................................. 1-18

Before Starting Engine..................................................................... 1-28

Machine Operation........................................................................... 1-31

Maintenance .................................................................................... 1-38

Battery.............................................................................................. 1-47

Towing ............................................................................................. 1-49

Shipping and Transportation............................................................ 1-50

Excavator Rated Lift Capacity Tables.............................................. 1-51

Operating Controls ....................................................................2-1

Component Locations........................................................................ 2-2

Operator's Area.................................................................................. 2-4

Operational Controls and Panels....................................................... 2-6

Instrument Panel.............................................................................. 2-20

Multifunction Gauge and Graphic Information ................................. 2-27

Mode Selector Buttons..................................................................... 2-33

Setting Main Menu........................................................................... 2-35

Flow Control..................................................................................... 2-44

Operation Selection Display............................................................. 2-46

Heater and Air Conditioner Control Panel........................................ 2-49

Stereo .............................................................................................. 2-55

Miscellaneous Electrical Devices..................................................... 2-56

950106-00284EI

Table of Contents

Seat Adjustment............................................................................... 2-58

Ceiling Cover ................................................................................... 2-62

Front Windows................................................................................. 2-63

Door Side Latch ............................................................................... 2-65

Cabin Storage Compartments ......................................................... 2-66

Ashtray............................................................................................. 2-66

Sun Visor ......................................................................................... 2-67

Hanger ............................................................................................. 2-68

Cup Holder....................................................................................... 2-68

Emergency Glass Breaking Tool ..................................................... 2-68

Miscellaneous Access Covers and Doors........................................ 2-69

Operation....................................................................................3-1

To Handle a New Excavator .............................................................. 3-1

Starting and Stopping the Engine ...................................................... 3-2

Safety Lever..................................................................................... 3-14

Travel ............................................................................................... 3-15

Operating Instructions...................................................................... 3-20

Operating Precautions ..................................................................... 3-26

Parking Excavator............................................................................ 3-31

Towing Procedure............................................................................ 3-32

Hydraulic Breaker ............................................................................ 3-33

Adjusting the Pump Flow ................................................................. 3-38

Operating Techniques...................................................................... 3-41

Operation Under Unusual Conditions .............................................. 3-43

Inspection, Maintenance and Adjustment...............................4-1

Preventive Maintenance .................................................................... 4-1

Preliminary Work Machine Setup for Maintenance............................ 4-4

Table of Recommended Lubricants ................................................... 4-6

Fluid Capacities ................................................................................. 4-8

Lubrication and Service Chart............................................................ 4-8

Maintenance Intervals...................................................................... 4-12

950106-00284ETable of ContentsII

10 Hour / Daily Service .................................................................... 4-14

50 Hour / Weekly Service ................................................................ 4-24

250 Hour / Monthly Service.............................................................. 4-27

500 Hour / 3 Month Service ............................................................. 4-34

1,000 Hour / 6 Month Service .......................................................... 4-43

2,000 Hour / Yearly Service............................................................. 4-51

4,000 Hour / Biennial Service .......................................................... 4-58

12,000 Hour / 6 Year Service........................................................... 4-59

Air-Conditioning System .................................................................. 4-60

Bolt and Nut Inspection.................................................................... 4-61

Bucket .............................................................................................. 4-69

Bucket Shimming Procedures.......................................................... 4-71

Electrical System ............................................................................. 4-73

Engine Cooling System.................................................................... 4-77

Fuel Transfer Pump (Optional) ........................................................ 4-80

Handling of Accumulator.................................................................. 4-82

Track Tension .................................................................................. 4-83

Venting and Priming Hydraulic System............................................ 4-85

Long Term Storage.......................................................................... 4-87

Maintenance in Special Conditions.................................................. 4-89

Transportation ...........................................................................5-1

Loading and Unloading...................................................................... 5-1

Lifting With Sling ................................................................................ 5-5

Troubleshooting ........................................................................6-1

Electrical System ............................................................................... 6-1

Engine................................................................................................ 6-2

Hydraulic System............................................................................... 6-3

Swing System .................................................................................... 6-4

Travel System.................................................................................... 6-5

Specification ..............................................................................7-1

950106-00284EIII

Table of Contents

Standard Specification....................................................................... 7-1

Overall Dimensions............................................................................ 7-2

Working Range .................................................................................. 7-4

Approximate Weight of Workload Materials....................................... 7-6

Index ...........................................................................................8-1

950106-00284ETable of ContentsIV

OP001172

1Safety

TO THE OPERATOR OF A DOOSAN EXCAVATOR

Please respect the importance of taking responsibility for yourown safety, and that of other people who may be affected byyour actions.

The safety information on the following pages is organized intothe following sections:

1. “Location of Safety Labels” on page 1-4

2. “Visibility Information” on page 1-15

3. “Summary of Safety Precautions for Lifting in DiggingMode” on page 1-17

4. “Unauthorized Modifications” on page 1-18

5. “General Hazard Information” on page 1-18

6. “Before Starting Engine” on page 1-28

7. “Machine Operation” on page 1-31

8. “Maintenance” on page 1-38

9. “Battery” on page 1-47

10. “Towing” on page 1-49

11. “Shipping and Transportation” on page 1-50

12. “Excavator Rated Lift Capacity Tables” on page 1-51

DANGERUnsafe use of the excavator could lead to serious injury ordeath. Operating procedures, maintenance and equipmentpractices or traveling or shipping methods that do notfollow the safety guidelines on the following pages couldcause serious, potentially fatal injuries or extensivedamage to the machine or nearby property.

OP0011721-1

Safety

WARNINGImproper operation and maintenance of this machine canbe hazardous and could result in serious injury or death.

Operator and maintenance personnel should read thismanual thoroughly before beginning operation ormaintenance.

Keep this manual in the storage compartment to the rear ofthe operator's seat, and have all personnel involved inworking on the machine read the manual periodically.

Some actions involved in operation and maintenance of themachine can cause a serious accident, if they are not donein a manner described in this manual.

The procedures and precautions given in this manual applyonly to intended uses of the machine.

If you use your machine for any unintended uses that arenot specifically prohibited, you must be sure that it is safefor any others. In no event should you or others engage inprohibited uses or actions as described in this manual.

DOOSAN delivers machines that comply with all applicableregulations and standards of the country to which it hasbeen sent. If this machine has been purchased in anothercountry or purchased from someone in another country, itmay lack certain safety devices and specifications that arenecessary for use in your country. If there is any questionabout whether your product complies with the applicablestandards and regulations of your country, consultDOOSAN or your DOOSAN distributor before operating themachine.

SAFETY ALERT SYMBOLBe Prepared - Get to Know All Operating and SafetyInstructions.

This is the Safety Alert Symbol. Wherever it appears in thismanual or on safety signs on the machine you should bealert to the potential for personal injury or accidents.Always observe safety precautions and followrecommended procedures.

OP001172Safety1-2

Learn Signal Words Used with Safety Alert Symbol

The words "CAUTION," "WARNING," and "DANGER" usedthroughout this manual and on decals on the machine indicatedegree of risk of hazards or unsafe practices. All three degreesof risk indicate that safety is involved. Observe precautionsindicated whenever you see the Safety Alert "Triangle," nomatter which signal word appears next to the "ExclamationPoint" symbol.

Safety precautions are described in SAFETY from page 1-4 on.

DOOSAN cannot predict every circumstance that might involvea potential hazard in operation and maintenance. Therefore thesafety messages in this manual and on the machine may notinclude all possible safety precautions. If any procedures oractions not specifically recommended or allowed in this manualare used, you must be sure that you and others can do suchprocedures and actions safely and without damaging themachine. If you are unsure about the safety of any procedures,contact a DOOSAN distributor.

CAUTIONThis word is used on safety messages and safety labels andindicates potential of a hazardous situation that, if notavoided, could result in minor or moderate injury. It mayalso be used to alert against a generally unsafe practice.

WARNINGThis word is used on safety messages and safety labels andindicates potential threat of a hazardous situation that, if notavoided, could result in serious injury or death. It may also beused to alert against highly unsafe practice.

DANGERThis word is used on safety messages and safety labels andindicates an imminent hazard of a situation that, if notavoided, is very likely to cause death or extremely seriousinjury. It may also be used to alert against equipment thatmay detonate or explode if handled or treated carelessly.

OP0011721-3

Safety

LOCATION OF SAFETY LABELS

There are several specific warning signs on this machine. Theexact location of hazards and the description of the hazards arereviewed in this section.

Please become familiarized with all warning signs.

Make sure that all the warning signs are legible. Clean thewarning signs or replace the warning signs if you cannot readthe words. Replace the illustrations if the illustrations are notvisible. When you clean the warning signs, use a cloth, waterand soap. Do not use solvent, gasoline, or other harshchemicals to clean the safety signs. Solvents, gasoline, or otherharsh chemicals could loosen the adhesive that secures thewarning sign. Loose adhesive will allow the warning sign to falloff.

Replace any safety sign that is damaged, or missing. If a safetysign is attached to a part that is replaced, install a safety sign onthe replacement part.

11

13

8

12

3 20 1, 2, 5, 6, 17

15

16

4 18

1919

18 7

9 11 14

10

FG016012

Figure 1

OP001172Safety1-4

1. Warnings for Operation, Inspection and Maintenance (190-00688, 190-00092)

2. Warnings for High Voltage (190-00689, 190-00096)

AVOID DEATH OR SERIOUS INJURY. - READ AND UNDERSTANDOPERATION MANUAL AND SAFETY LABELS prior to operatingthis machine.

190-00688

190-00092

Never get in under the machine while it is being jacked upwith boom and arm.

Sound the horn to aler t the people nearby before operating,and make sure that all persons are clear of area.

Controls may be changed for attachments or operatorpreference. Try control pattern before operating.

ARO1080L

ARO1090L

DANGERSERIOUS INJURY OR DEATH BYELECTROCTION can occur ifmachine or attachments arenot a safe distance from electricalpower lines.

Line voltage Safe Distance

6.6 kv

66.6 kv275.0 kv

At least 3m(10ft)At least 5m(16ft)

At least 10m(33ft)190-00689

190-00096

OP0011721-5

Safety

3. Warnings When Opening a Front Window (2190-3388, 190-00093)

4. Warnings for a High-pressure Cylinder (190-00122)

FG000665

When raising window,

lock it in place with lock

pins on both sides.

Falling window can cause

injury.

2190-3388190-00093

190-00122

ARO1110L

OP001172Safety1-6

5. Warnings When Adjusting Track Tension (2190-3386A, 190-00521)

6. Warnings for Leaving Operator's Seat (190-00693, 190-00094)

190-00521

The t rack adjuster ad justment and handl ingThe spring in the track adjuster is loaded with great force and the pressure in the cylinder is very high. For this reason there is a possibility of an accident whichmay involve injury to personnel. It is very dangerousto make mistakes when performing such an adjustmentor disassembly.

Be sure to read the procedures described in the Operationand Maintenance Manual carefully before adjusting the track tension.

2190-3386A

ARO1120L

FG014682

190-00094

Sudden and unwanted machinemovement can cause seriousinjury or death.

Always make sure when leavingoperator’s seat to :

Lower equipment to the ground.Move safety lever to LOCK position.Turn key switch OFF. Remove keyfrom switch.

190-00693

OP0011721-7

Safety

7. Warnings for Batteries Maintenance (2190-2533A, 190-00100)

8. Warnings for High Temperature Hydraulic Oil (190-00691A, 190-00097)

ARO1150L

190-00100

Battery fumes can explode. Keep sparks and flames awayfrom batteries.Always avoid storing metals like tools or flammablematerials around or on the batteries. Explosion or firecan be caused by shortcircuiting batteries.Surfuric acid in battery is poisonous. It is strong enoughburn skin, eat holes in clothing, and cause blindnessif splashed eyes.If you spill acid on yourself;

1. Flush your skin with water.2. Apply baking soda or lime to help neutralize the acid.3. Flush your eyes with water for 10-15 minutes. Get medical attention immediately.

2190-2533A

FG012964

HOT OIL CAN CAUSE INJURY ORBLINDNESS.

To prevent hot oil from spurting out:

Turn engine off

Allow oil to cool

Lift cap to relieve pressure

190-00691A

190-00097

OP001172Safety1-8

9. Warnings for Hot Coolant (190-00692, 190-00097)

10. Warnings for Handling an Accumulator (190-00703, 190-00099)

ARO1170L

190-00097

HOT COOLANT CAN CAUSE INJURYOR BLINDNESS.Never loosen or open radiator capwhen coolant is hot and underpressure.To open cap, stop engine, wait untilradiator is cool. Then loosen capslowly to relieve the pressure.

190-00692

EXPLOSION HAZARD

Keep away from flame.Do not weld on, or drillinto the accumulator.

190-00703190-00099

ARO1180L

OP0011721-9

Safety

11. Warnings for Rotating Parts (190-00694, 190-00095, 190-00557)

12. Warning Tag - Used When Inspection and Maintenance (190-00695A, 190-00098A)

ARO1190L

Rotating par ts can causepersonal injury.Keep away from fan and belt when engine is run-ning. Stop engine beforeservicing.

190-00694

190-00095

190-00557

FG011223

190-00098A

DO NOT OPERATEwhen performing inspection

WARNING

190-00695A

or maintenance

OP001172Safety1-10

13. Warning for a Hot Surface (190-00648A)

14. Caution for Hood (190-00522A)

190-00648A

FG015745

190-00522A

FG012965

OP0011721-11

Safety

15. Keep Out of the Swing Area (2190-3379A, K1008571)

16. Warnings for Front Attachments (190-00652)

2190-3379A

K1008571

FG006551

ARO1230L190-00652

OP001172Safety1-12

17. Warning for Engine ECU (K1012583)

18. Warning for Lifting, Tie Down (K1042074A)

electrical welding to the body structure.To prevent damage to ECU of engine by

Be sure to read the procedures described

carefully before electrical welding.in the Operation and Maintenance manual

K1012583

CAUTION

FG014331

K1042074A

FG014828

OP0011721-13

Safety

19. Warning for Tie Down (950209-00205)

20. Warning for Visibility (950205-00862, 950205-00863)

950209-00205

FG014875

FG016032

950205-00863

display mode on monitor so youcan see rear of machine when

If rear view camera is equipped onexcavator. Press button to change

Before moving, look around and atmirror and monitor to comfirm thatno one is around the machine.Failure to do so can result inserious injury or death.

swinging or backing up excavator.

950205-00862

OP001172Safety1-14

VISIBILITY INFORMATIONA rear view camera and mirrors ensure that visibility around themachine, from the operator's seat, meets the latest ISOstandards for the region or marketplace that machine is sold into.

NOTE: These devices may vary from one region to another,depending upon local and regional regulations. If amachine is moved or sold into another region ormarketplace, it is the owner's responsibility to makesure it complies with all regulations.

Your machine may be equipped with visual aids; mirrors orcameras, but even with these aids, there still may be blind spotswhich cannot be seen from the operator's seat, so always becareful when operating.

Adjust the visual aids for the best visibility criteria for all areasaround the machine.

When swinging or backing up, press button to change displaymode on monitor so you can check rear and side of machine.Before moving the machine, look around the work site throughmirrors and monitor to confirm that no one is around themachine.

FG015564

1

1 1

21. Mirror2. Rear View Camera

Figure 2

WARNINGFailure to check for and clear people from the surroundingarea of a machine could result in serious injury or death.The operator should make sure that visual aids (mirrors andcamera (s)) are in proper working condition. Look for anypossible blind spots.

OP0011721-15

Safety

While operating or traveling in places with poor visibility, and if itis impossible to confirm the condition of the work site, or if anobstacle is in the area around the machine, there can be adanger that machine may suffer damage or operator or othersmay suffer serious personal injury.

Inspect equipment and immediately report if there are problemswith the visual aids. If machine cannot be fixed immediately, DONOT use the machine. Contact your local DOOSAN distributoras soon as possible and ask for repairs.

Guidelines

• If the visibility cannot be sufficiently assured, use aflagman. The operator should pay careful attention tothe signals and follow the instructions of the flagman.

• Signals should only be given by one flagman.

• When working in dark places, turn "ON" work lightsand front lights on the machine. Set up additionallighting in the area.

• Stop operations if there is poor visibility, such as fog,snow, rain, or sandstorms.

• Check mirrors and rear view camera (optional) lenson machine before starting operations. Clean off anydirt and adjust view to ensure good visibility.

When operating or traveling during poor visibility conditions, andespecially in a large machine, strictly adhere to the aboveguidelines.

NOTE: Refer to ISO 5006 for additional guidelines andinformation.

It may not be possible to adjust all visual aids to see all the wayaround the machine. Therefore, additional precautions must betaken to ensure the safe operation of the machine.

NOTE: Larger machines are more likely to have blind spots.

NOTE: Refer to ISO 5006 for weight class information.

OP001172Safety1-16

SUMMARY OF SAFETY PRECAUTIONS FOR LIFTING IN DIGGING MODE

To lift safely while in Digging Mode, the following items must beevaluated by the operator and the work site crew.

• Condition of ground support.

• Excavator configuration and attachments.

• Weight, lifting height and lifting radius.

• Safe rigging of the load.

• Proper handling of the suspended load.

Tag lines on opposite sides of the load can be very helpful inkeeping a suspended load secure, if they are anchored safely tocontrol points on the ground.

Always engage the "Digging Mode" control on the InstrumentPanel before using the excavator for lifting work.

DANGERUnsafe use of the excavator while making rated lifts couldcause serious, potentially fatal injuries or extensivedamage to the machine or nearby property. Do not letanyone operate the machine unless they've been properlytrained and understand the information in the Operationand Maintenance Manual.

WARNINGNEVER wrap a tag line around your hands or body.

NEVER rely on tag lines or make rated lifts when wind gustsare more than 48.3 km/h (30 MPH). Be prepared for any windgust when working with loads that have a large surfacearea.

WARNINGIf you need more information or have any questions orconcerns about safe operating procedures or working theexcavator correctly in a particular application or in thespecific conditions of your individual operating environment,please consult your local DOOSAN representative.

OP0011721-17

Safety

UNAUTHORIZED MODIFICATIONSAny modification made without authorization or written approvalfrom DOOSAN can create a safety hazard, for which themachine owner will be held responsible.

For safety's sake, replace all OEM parts with the correctauthorized or genuine DOOSAN part. For example, not takingthe time to replace fasteners, bolts or nuts with the correctreplacement parts could lead to a condition where the safety ofcritical assemblies are dangerously compromised.

GENERAL HAZARD INFORMATION

Safety Rules

Only trained and authorized personnel can operate and maintainthe machine.

Follow all safety rules, precautions and instructions whenoperating or performing maintenance on the machine.

Do not operate the machine if you are not feeling well, if you aretaking medication that makes you feel sleepy, if you have beendrinking, or if you are suffering from emotional problems. Theseproblems will interfere with your sense of judgment inemergencies and may cause accidents.

When working with another operator or with a person on worksite traffic duty, be sure that all personnel know the nature of thework and understand all hand signals that are to be used.

Always observe strictly any other rules related to safety.

Safety Features

Be sure that all guards and covers are installed in their properposition. Have guards and covers repaired immediately ifdamaged.

Be sure that you understand the method of use of safetyfeatures such as safety lock lever and the seat belt, and usethem properly.

Never remove any safety features. Always keep them in goodoperating condition.

Failure to use safety features according to the instructions in theOperation and Maintenance Manual could result in seriousbodily injury.

OP001172Safety1-18

Inside Operator's Cabin

When entering the operator's cabin, always remove all mud andoil from the soles of your shoes. If you operate the travel pedalwith mud or oil stuck to your shoes, your foot may slip and thismay cause a serious accident.

After using the ashtray, make sure that any matches orcigarettes are properly extinguished, and be sure to close theashtray. If the ashtray is left open, there is a danger of fire.

Do not stick suction pads to the window glass. Suction pads actas a lens and may cause fire.

Do not leave lighters laying around the operator's cabin. If thetemperature inside the operator's cabin becomes high, there is adanger that lighter may explode.

Do not use cellular telephones inside the operator's cabin whendriving or operating the machine. There is a danger that this maylead to an unexpected accident.

Never bring any dangerous objects such as flammable orexplosive items into the operator's cabin.

To ensure safety, do not use the radio or music headphoneswhen operating the machine. There is a danger that this maylead to a serious accident.

When operating the machine, do not put your hands or head outof the window.

When standing up from the operator's seat, always place safetylock lever securely in the "LOCK" position. If you accidentallytouch the work equipment levers when they are not locked, themachine may suddenly move and cause serious injury ordamage.

When leaving the machine, completely lower the workequipment to the ground, set safety lock lever to the "LOCK"position and shut down engine. Use the key to lock all theequipment. Always remove key and take it with you.

Clothing and Personal Protective Items

Secure long hair, and avoid loose clothing and jewelry. Theseitems have the tendency to catch on controls or protrude intoparts and cause serious injury or death.

Do not wear oily clothes. They are highly flammable.

Full eye protection, a hard hat, safety shoes and gloves may berequired at the work site.

While working on the machine, never use inadequate tools.They could break or slip, causing injury, or they may notadequately perform intended functions.

HAOA020L

Figure 3

OP0011721-19

Safety

Breathing Masks, Ear Protection May Be Required

Do not forget that some risks to your health may not beimmediately apparent. Exhaust gases and noise pollution maynot be visible, but these hazards can cause disabling orpermanent injuries.

NOTE: The equivalent continuous A-weighted soundpressure level at the workstation for this machine is73 dB (A).

Measurement is obtained on a dynamic machinefollowing the procedures and cabin conditions asdescribed in ISO 6396.

NOTE: The guaranteed sound power level emitted by themachinery for this machine is 104 dB (A).

Measurement is obtained on a dynamic machine withthe procedures as described in 2000/14/EC.

Vibration Level Information

Hands/Arms: The weighted root mean square acceleration towhich the hands/arms are subjected, is less than 2.5 m/s2.

Whole body: The weighted root mean square acceleration towhich the whole body is subjected, is less than 0.5 m/s2.

Measurements are obtained on a representative machine, usingmeasuring procedures as described in the following standard:ISO 2631/1. ISO 5349, and SAE J1166.

OP001172Safety1-20

Recommendations for Limiting Vibrations

1. Select the right machine, equipment and attachments for aparticular application.

2. Replace any damaged seat by a DOOSAN genuine part.Keep the seat maintained and adjusted.

• Adjust the seat and suspension for the weight andsize of the operator.

• Inspect and maintain the suspension and adjustmentmechanisms of the seat regularly.

3. Check that machine is properly maintained.

• Tire pressure, brakes, steering, linkages, etc.

4. Steer, brake, accelerate, shift gears, move theattachments and load the attachments smoothly.

5. Adjust the machine speed and travel path to reduce thevibration level.

• Slow down if it is necessary when traveling throughrough terrain.

• When driving machine, avoid obstacles andexcessive rough terrain.

6. Keep the machine on terrain where working and travelingconditions are good.

• Remove any large rocks or obstacles.

• Fill any ditches and holes.

• Provide machines for and schedule time to maintaingood terrain conditions.

7. Travel over longer distance (e.g. on public roads) atadjusted (medium) speed.

• Always adjust the speed to prevent bouncing.

OP0011721-21

Safety

Mounting and Dismounting

Before getting on or off the machine, if there is any oil, grease,or mud on the handrails, steps, or track shoes, wipe it offimmediately. Always keep these parts clean. Repair anydamage and tighten any loose bolts.

Never jump on or off the machine. In particular, never get on oroff a moving machine. These actions may lead to serious injury.

When getting on or off the machine, always face the machine,and maintain three-point contact (both feet and one hand or onefoot and both hands) with the handrails, steps, and track shoesto ensure that you support yourself securely.

Never hold any control levers when getting on or off themachine.

Apply the door lock securely. If you grip the handrail inside thedoor when moving on top of the track shoes, and the door lock isnot applied securely, the door may move and cause you to fall.

Use the points marked by arrows in the diagram when getting onor off the machine.

Fuel, Oil and Hydraulic Fluid Fire Hazards

Fuel, oil and antifreeze will catch fire if it is brought close to aflame. Fuel is particularly flammable and can be hazardous.

Always strictly observe the following.

Add fuel, oil, antifreeze and hydraulic fluid to the machine only ina well ventilated area. The machine must be parked withcontrols, lights and switches turned "OFF." The engine must be"OFF" and any flames, glowing embers, auxiliary heating unitsor spark causing equipment must be extinguished, turned "OFF"and/or kept well clear of the machine.

Static electricity can produce dangerous sparks at the fuel fillingnozzle. In very cold, dry weather or other conditions that couldproduce a static discharge, keep the tip of the fuel nozzle inconstant contact with the neck of the fuel filling nozzle, toprovide a ground.

Keep fuel and other fluid reservoir caps tight and do not start theengine until caps have been secured.

FG000355

Figure 4

Figure 5

OP001172Safety1-22

Precautions When Handling Fluids at High Temperature

Immediately after operations are stopped, the coolant, engineoil, and hydraulic oil are at highest temperatures and the radiatorand hydraulic tank are still under pressure. Attempting toremove cap, drain the oil or coolant, or replace the filters maylead to serious burns. Always wait for the temperature to godown, and follow the specified procedures when carrying outthese operations.

To prevent hot coolant from spurting out, shut down engine, waitfor the coolant to cool, then loosen the cap slowly to relieve thepressure.

To prevent hot oil from spurting out, shut down engine, wait forthe oil to cool, then loosen the cap slowly to relieve the pressure.

Asbestos Dust Hazard Prevention

Asbestos dust can be HAZARDOUS to your health if it isinhaled. Materials containing asbestos fiber can be present onwork site. Breathing air that contains asbestos fiber canultimately cause serious or fatal lung damage. To prevent lungdamage from asbestos fiber, observe following precautions:

• Use a respirator that is approved for use in anasbestos-laden atmosphere.

• Never use compressed air for cleaning.

• Use water for cleaning to keep down the dust.

• Work on the machine or component with the wind atyour back whenever possible.

• Always observe any regulations related to the worksite and working environment.

HAOA050L

Figure 6

HAOA060L

Figure 7

ARO1770L

Figure 8

OP0011721-23

Safety

Injury from Work Equipment

Do not enter or put your hand, arm or any other part of your bodybetween movable parts, such as between the work equipmentand cylinders, or between the machine and work equipment.

If the control levers are operated, the clearance between themachine and the work equipment will change and this may leadto serious damage or personal injury.

If going between movable parts is necessary, always positionand secure the work equipment so it cannot move.

Fire Extinguisher and First Aid Kit

As a precaution if any injury or fire should occur, always do thefollowing.

• Be sure that fire extinguishers have been providedand read the labels to ensure that you know how touse them. It is recommended that an appropriatelysized (2.27 kg [5 lb] or larger) multipurpose "A/B/C"fire extinguisher be mounted in the cabin. Check andservice the fire extinguisher at regular intervals andmake sure that all work site crew members areadequately trained in its use.

• Provide a first aid kit in the storage compartment andkeep another at the work site. Check the kitperiodically and make any additions if necessary.

• Know what to do in case of injury from fire.

• Keep emergency numbers for doctor, ambulanceservice, hospital and fire department near yourtelephone.

If the machine catches fire, it may lead to serious personal injuryor death. If a fire occurs during operation, escape from themachine as follows:

• Turn the starter switch to the "O" (OFF) position andshut down engine.

• If there is time, use the fire extinguisher to put out asmuch of the fire as possible.

• Use the handrails and steps to escape from themachine.

The above is the basic method for escaping from the machine,but changing the method may be necessary according to theconditions, so carry out practice drills at the work site.

HDO1010L

Figure 9

HDO1009L

Figure 10

OP001172Safety1-24

Protection from Falling or Flying Objects

On work sites where there is a danger that falling or flyingobjects may hit the operator's cabin select a guard to match theoperating conditions to protect the operator.

Working in mines, tunnels, deep pits or on loose or wet surfacescould produce danger of falling rock or hazardous flying objects.Additional protection for the operator's cabin could be required inthe form of a FOPS (Falling Object Protective Structure) orwindow guards.

Never attempt to alter or modify any protective structurereinforcement system, by drilling holes, welding, remounting orrelocating fasteners. Any serious impact or damage to thesystem requires a complete integrity reevaluation.Reinstallation, recertification and/or replacement of the systemmay be necessary.

Contact your DOOSAN distributor for available safety guardsand/or recommendations to prevent danger of getting hit byobjects that could strike the operator's cabin. Make sure that allother work site crew members are kept well away from theexcavator and safe from possible hazards.

For breaker operation, install a front guard and apply alaminated coating sheet to the front glass. Contact yourDOOSAN distributor for recommendations.

When carrying out demolition or cutting operation, install a frontguard and top guard, and apply a laminated coating sheet to thefront glass.

When working in mines or quarries where there is a danger offalling rock, install FOPS (Falling Objects Protective Structure)and apply a laminated coating sheet to the front glass.

If any glass on the machine is broken, replace it with new glassimmediately.

Attachment Precautions

Option kits are available through your dealer. Contact DOOSANfor information on available one-way (single-acting) and two-way(double-acting) piping / valving / auxiliary control kits. BecauseDOOSAN cannot anticipate, identify or test all the attachmentsthat owners may wish to install on their machines, pleasecontact DOOSAN for authorization and approval of attachments,and their compatibility with optional kits.

HAOA110L

Figure 11

HAOA100L

Figure 12

OP0011721-25

Safety

Accumulator

The pilot control system is equipped with an accumulator. For abrief period of time after the engine has been shut down, theaccumulator will store a pressure charge that may enablehydraulic controls to be activated. Activation of any controls mayenable the selected function to operate under force of gravity.

When performing maintenance on the pilot control system, thehydraulic pressure in the system must be released as describedin “Handling of Accumulator” on page 4-82.

The accumulator is charged with high-pressure nitrogen gas, soit is extremely dangerous if it is handled in the wrong way.Always observe the following precautions:

• Do not drill or make any holes in the accumulator orexpose it to any flames, fire or heat source.

• Do not weld on the accumulator, or try attachinganything to it.

• When carrying out disassembly or maintenance ofthe accumulator, or when disposing of theaccumulator, the charged gas must be properlyreleased. Contact your DOOSAN distributor.

• Wear safety goggles and protective gloves whenworking on an accumulator. Hydraulic oil underpressure can penetrate the skin and cause seriousinjuries.

Indoor Ventilation

Engine exhaust gases can cause fatal accidents, andunconsciousness, loss of alertness, judgment and motor controland serious injury.

Make sure there is adequate ventilation before starting theengine in any enclosed area.

You should also be aware of open windows, doors or ductworkwhere exhaust may be carried, or blown by the wind, exposingothers to danger.

ARO1770L

Figure 13

OP001172Safety1-26

Emergency Exit

The excavator is equipped with a glass breaking tool. It is foundon the center of the column to the left of the cabin. This tool canbe used in case of an emergency that requires breaking glass toexit from the operator's cabin. Grip the handle firmly and use thesharp point to break the glass.

FG015808

Figure 14

WARNINGProtect your eyes when breaking the glass.

OP0011721-27

Safety

BEFORE STARTING ENGINE

Work Site Precautions

Before starting operations, thoroughly check the area for anyunusual conditions that could be dangerous.

Check the terrain and condition of the ground at the work site,and determine the best and safest method of operation.

Make sure the ground surface is as hard and horizontal aspossible before carrying out operations. If there is a lot of dustand sand on the work site, spray water before startingoperations.

If you need to operate on a street, protect pedestrians and carsby designating a person for work site traffic duty or by erectingfences and posting "No Entry" signs around the work site.

Erect fences, post "No Entry" signs, and take other steps toprevent people from coming close to or entering the work site. Ifpeople come close to a moving machine, they may be hit orcaught by the machine, and this may lead to serious personalinjury or death.

Waterlines, gas lines, phone lines and high-voltage electricallines may be buried under the work site. Contact each utility andidentify their locations. Be careful not to damage or cut any ofthese lines.

Check the condition of the riverbed, and the depth and flow ofthe water before operating in water or crossing a river. NEVERwork in water that is more than the permissible water depth.

Any object in vicinity of boom could represent a potential hazard,or cause the operator to react suddenly and cause an accident.Use a spotter or signal person when working near bridges,phone lines, work site scaffolds, or other obstructions.

Minimum levels of insurance coverage, work permits orcertification, physical barriers around the work site or restrictedhours of operation may be mandated by governing authorities.There may also be regulations, guidelines, standards orrestrictions on equipment that may have to be followed for localrequirements. There may also be regulations related toperforming certain kinds of work. If there is any question aboutwhether your machine and work site complies with theapplicable standards and regulations, contact your localauthorities and agencies.

Avoid entering soft ground. It will be difficult for the machine toescape.

Avoid operating your machine to close to the edge of cliffs,overhangs, and deep ditches. The ground may be weak in suchareas. If the ground collapses, the machine could fall or tip overresulting in serious injury or death.

Remember that soil after heavy rain, blasting or afterearthquakes, is weakened.

Newly laid earth and the soil near ditches is typically loose. Itcan collapse under the weight of vibration of your machine andcause your machine to tip over.

Install the head guard (FOPS) if working in areas where there isa danger of falling rocks.

FG000400

DANGER

No Entry

Figure 15

Figure 16 FG000363

FG000372

Figure 17

OP001172Safety1-28

Checks Before Starting Engine

Every day before starting the engine for the first time, carry outthe following checks. If these checks are not carried outproperly, there is a danger of serious injury.

Remove all wood chips, leaves, grass, paper and otherflammable materials accumulated in the engine compartmentand around the battery. They could cause a fire. Remove anydirt from the window glass, mirrors, handrails, and steps.

Do not leave tools or spare parts laying around in the operator'scabin. The vibration of the machine when traveling or duringoperations may cause them to fall and damage or break thecontrol levers or switches. They may also get caught in the gapof the control levers and cause the work equipment tomalfunction or move dangerously. This may lead to unexpectedaccidents.

Check the coolant, fuel, and hydraulic tank oil levels, and checkfor clogged air cleaner and damage to the electrical wiring.

Adjust the operator's seat to a position where it is easy tooperate the machine, and check the seat belt and mounts fordamage and wear.

Check the operation of the gauges and the angle of the mirrors,and check that safety lever is in "LOCKED" position.

If any abnormalities are found in the above checks, carry outrepairs immediately.

Engine Starting

Walk around your machine before getting in the operator'scabin. Look for evidence of leaking fluid, loose fasteners,misaligned assemblies or any other indications of possibleequipment hazard.

All equipment covers and machinery safety guards must be inplace, to protect against injury while the machine is beingoperated.

Look around the work site area for potential hazards, people orproperty that could be at risk while operation is in progress.

NEVER start the engine if there is any indication thatmaintenance or service work is in progress, or if a warning tag isattached to controls in the cabin.

A machine that has not been used recently, or is being operatedin extremely cold temperatures, could require a warm-up ormaintenance service before start-up.

Check gauges and monitor displays for normal operation beforestarting the engine.

Listen for unusual noises and remain alert for other potentiallyhazardous conditions at the start of the work cycle.

Do not short-circuit the starting motor to start the engine. This isnot only dangerous, but may also damage the machine.

When starting the engine, sound the horn as an alert.

Start and operate the machine only while seated.

OP0011721-29

Safety

Before Operating Machine

If checks are not carried out properly after starting the engine, itmay result in a delay in discovering abnormalities in themachine, and this may lead to personal injury or damage to themachine.

Carry out the checks in an open area where there are noobstructions. Do not let anyone near the machine when carryingout the checks.

• Check the operating condition of the equipment, andthe movement of the bucket, arm, boom, travel, andswing systems.

• Check the machine for any abnormal noise, vibration,heat, smell, or abnormality with the gauges. Checkalso for leakage of air, oil, and fuel.

• If any abnormality is found, repair the problemimmediately. If the machine is used without repairingthe problems, it may lead to unexpected injury orfailure.

• Clear all personnel from directly around machine andfrom the area.

• Clear all obstacles from the machine's path. Bewareof hazards.

• Be sure that all windows are clean. Secure the doorsand the windows in the open position or in the shutposition.

• Adjust the rearview mirrors for best visibility close tothe machine. Make sure that horn, the travel alarm (ifequipped), and all other warning devices are workingproperly.

• Fasten the seat belt securely.

• Warm up the engine and hydraulic oil beforeoperating machine.

• Before moving the machine, check undercarriageposition. The normal travel position is with idlerwheels to the front under the cabin and the drivesprockets to the rear. When the undercarriage is inthe reversed position, the travel controls must beoperated in opposite directions.

OP001172Safety1-30

MACHINE OPERATION

When Swinging or Changing Direction of Travel

Before operating the machine or the work equipment, alwaysobserve the following precautions to prevent serious injury ordeath.

• Start and operate the machine only while seated.

• When changing travel direction from forward toreverse or from reverse to forward, reduce speedearly and stop the machine before changing thetravel direction.

• Sound the horn to warn people in the area.

• Check that there is no one in the area around themachine. There are blind spots behind the machine,so if necessary, swing the upper structure to checkthat there is no one behind the machine beforetraveling in reverse.

• When operating in areas that may be hazardous orhave poor visibility, designate a person to direct worksite traffic.

• Ensure that no unauthorized person can come withinthe turning radius or direction of travel.

Be sure to observe the above precautions even if a travel alarmor mirrors are installed.

HAOA190L

Figure 18

OP0011721-31

Safety

Travel Precautions

Never turn the starting switch to the "O" (OFF) position whentraveling. It is dangerous if the engine stops while the machine istraveling. It will be impossible to operate the steering.

Attachment control levers should not be operated whiletraveling.

Do not change selected travel mode (FAST/SLOW) whiletraveling.

Fold in work equipment so the outer end of the boom is as closeto the machine as possible, and is 40 - 50 cm (16 - 20 in)aboveground.

Never travel over obstacles or slopes that will cause themachine to tilt severely. Travel around any slope or obstacle thatcauses the machine to tilt 10 degrees or more to the right or left,or 30 degrees or more from front to rear.

Do not operate the steering suddenly. The work equipment mayhit the ground and cause the machine to lose its balance, andthis may damage the machine or structures in the area.

When traveling on rough ground, travel at low speed, and avoidsudden changes in direction.

Always keep to the permissible water depth. Permissible waterdepth is to the centerline of the upper track rollers.

When traveling over bridges or structures on private land, checkfirst that bridge or structure can withstand the weight of themachine. When traveling on public roads, check with the localauthorities and follow their instructions.

40 ~ 50 cm (16 ~ 20 in.)

FG000349

INCORRECT

TRAVEL POSTURE

Figure 19

OP001172Safety1-32

Traveling on Slopes

Never jump onto a machine that is running away to stop it. Thereis a danger of serious injury.

Traveling on slopes could result in the machine tipping over orslipping.

On hills, banks or slopes, carry the bucket approximately 20 - 30cm (8 - 12 in) above the ground. In case of an emergency,quickly lower the bucket to the ground to help stop the machine.

Do not travel on grass, fallen leaves, or wet steel plates. Evenslight slopes may cause the machine to slip to the side, so travelat low speed and make sure that machine is always travelingdirectly up or down the slope.

Avoid changing travel directiol on a slope. This could result intipping or sideslipping of the machine.

When possible, operate the machine up slopes and downslopes.Avoid operating the machine across the slope, when possible.

FG000365

20~30 Cm

20~30

Cm

Figure 20

OP0011721-33

Safety

Prohibited Operations

Do not dig the work face under an overhang. This may cause theoverhang to collapse and fall on top of the machine.

Do not carry out deep digging under the front of the machine.The ground under the machine may collapse and cause themachine to fall.

Working heavy loads over loose, soft ground or uneven, brokenterrain can cause dangerous side load conditions and possibletip over and injury. Travel without a load or a balanced load mayalso be hazardous.

Never rely on lift jacks or other inadequate supports when workis being done. Block tracks fore and aft to prevent anymovement.

When using the machine, to prevent accidents caused bydamage to the work equipment and overturning because of anexcessive load, do not use the machine in excess of its ability (interms of the maximum load and stability determined by thestructure of the machine).

When working at the edge of an excavation or on a roadshoulder, the machine could tip over, possibly resulting inserious injury or death. Investigate the configuration and groundconditions of the work site beforehand to prevent the machinefrom falling and to prevent the ground, stockpiles, or banks fromcollapsing.

FG000368

Figure 21

FG000170

Figure 22

FG000367

Figure 23

OP001172Safety1-34

Precautions for Operation

Be careful not to mistakenly travel too close to the edge of a cliff.

Use the machine only for its main purpose. Using it for otherpurposes will cause failures.

To ensure a good view, always do the following:

• When working in dark areas, attach working lightsand front lights to the machine. If necessary, set uplighting at the work site.

• Stop operations when the visibility is poor, such as infog, mist, snow, and rain. Wait for the visibility toimprove to a level which causes no problems for theoperation.

To avoid hitting the work equipment, always do the following:

• When working in tunnels, on bridges, under electricalwires, or when parking the machine or carrying outother operations in places with limited height, becareful not to hit the bucket or other parts.

• To prevent collisions, operate the machine at a safespeed when working in confined spaces, indoors, orin crowded areas.

• Do not pass the bucket over the heads of workers orover the operator's cabin of dump truck.

Avoid High-voltage Cables

Serious injury or death can result from contact or proximity tohigh-voltage electrical lines. The bucket does not have to makephysical contact with power lines for current to be transmitted.

Use a spotter and hand signals to stay away from power linesnot clearly visible to the operator.

Use these minimum distances as a guideline only. Dependingupon the voltage in the line and atmospheric conditions, strongcurrent shocks can occur with the boom or bucket as faraway as4 - 6 m (13 - 20 ft.) from the power line. Very high voltage andrainy weather could further decrease that safety margin.

NOTE: Before starting any operation near power lines (eitheraboveground or buried cable type), you shouldalways contact the power utility company directly andwork out a safety plan with them.

Figure 24 FG000430

FG000171

Figure 25

Voltage Minimum Safe Distance

6.6 kV 3 m (9' 10")

33.0 kV 4 m (13' 1")

66.0 kV 5 m (16' 5")

154.0 kV 8 m (26' 3")

275.0 kV 10 m (32' 10")

OP0011721-35

Safety

Protecting Cabin from Falling Object (Optional)

In a work site where falling objects or flying objects areexpected, be sure to install adequate protective devices forcovering the cabin.

When using a breaker, be sure to install the front windowprotection guard (1, Figure 26).

In a work site where falling rocks can cause damage andpossibly crush personnel, or in a mining operation, be sure toinstall the falling object protective structure (2, Figure 27).

Be sure to install any other additional protective structuresrequired for work site conditions.

When the falling object protective structure is installed, and thefront window needs to be cleaned, loosen the bolts marked withan arrow. Be sure to tighten bolts when done.

Operate Carefully on Snow, Ice and in Very Cold Temperatures

In icy cold weather avoid sudden travel movements and stayaway from even slight slopes. The machine could skid off to oneside very easily.

Snow accumulation could hide or obscure potential hazards.Use care while operating or while using the machine to clearsnow.

Warming up the engine for a short period may be necessary, toavoid operating with sluggish or reduced working capacity. Thejolting shocks and impact loads caused by bumping orbottoming the boom or attachment are more likely to causesevere stress in very cold temperatures. Reducing work cyclerate and workload may be necessary.

When the temperature rises, frozen road surfaces become soft,and machine travel becomes unstable.

In cold weather, do not touch metal surfaces with your barehands. If you touch a metal surface in extremely cold weather,your skin may freeze to the metal surface.

1

FG015809

Figure 26

2

FG015810

Figure 27

OP001172Safety1-36

Operations on Slopes

When working on slopes. there is a danger that machine maylose its balance and turn over, when swinging, or when workequipment is operated. Always carry out these operationscarefully.

Do not swing the work equipment from the uphill side to thedownhill side when the bucket is loaded. This operation isdangerous.

If the machine has to be used on a slope, pile the soil to make aplatform that will keep the machine as horizontal as possible.

In addition, lower the bucket as far as possible, keep it pulledinto the front, and keep the swing speed as low as possible.

Parking Machine

Avoid making sudden stops, or parking the machine wherever ithappens to be at the end of the workday. Plan so the excavatorwill be on firm, level ground away from traffic and away fromhigh walls, cliff edges and any area of potential wateraccumulation or runoff. If parking on inclines is unavoidable,block the crawler tracks to prevent movement. Lower the bucketor other working attachment completely to the ground, or to anovernight support saddle. There should be no possibility ofunintended or accidental movement.

When parking on public roads, provide fences, signs, flags, orlights, and put up any other necessary signs to ensure thatpassing traffic can see the machine clearly. Park the machine sothe machine, flags, and fences do not obstruct traffic.

After the front attachment has been lowered to an overnightstorage position and all switches and operating controls are inthe "OFF" position, the safety lock lever must be set to the"LOCKED" position. This will disable all pilot circuit controlfunctions.

Always close the door of the operator's cabin.

Never Let Anyone Ride on Attachment

Never let anyone ride on any work attachment, such as thebucket, crusher, grapple, or clamshell (grab bucket). There is adanger of the person falling and suffering serious injury.

FG000212

Figure 28

FG015811

Block

120

Unlock

Lock

Figure 29

ARO1310L

Figure 30

OP0011721-37

Safety

MAINTENANCE

Warning Tag

Alert others that service or maintenance is being performed andtag operator's cabin controls – and other machine areas ifrequired – with a warning notice. OSHA mandated control leverlockout can be made with any OSHA certified lockout device anda length of chain or cable to keep the safety lever in the fullylowered, nonactive position.

Warning tags, for controls are available from DOOSANdistributors.

Clean Before Inspection or Maintenance

Clean the machine before carrying out inspection andmaintenance. This prevents dirt from getting into the machineand ensures safety during maintenance.

If inspection and maintenance are carried out when the machineis dirty, it will become more difficult to locate the problems, andthere is a danger that you may get dirt or mud in your eyes orthat you may slip and injure yourself.

When washing the machine, do the following:

• Wear shoes with nonslip soles to prevent yourselffrom slipping and falling on wet places.

• Wear safety glasses and protective clothing whenwashing the machine with high-pressure steam.

• Take action to prevent touching high-pressure waterand cutting your skin or having mud fly into youreyes.

• Do not spray water directly on electrical components(sensors, connector). If water gets into the electricalsystem, there is a danger that it will cause defectiveoperation and malfunction.

Pick up any tools or hammers that are laying in the workplace.Wipe up any grease or oil or any other slippery substances, andclean the area to make it possible to carry out the operation insafety. If the workplace is left untidy, you may trip or slip andsuffer injury.

DO NOT OPERATEwhen performing inspection

WARNING

190-00695A

or maintenance

FG012195

Figure 31

ARO1330L

Figure 32

OP001172Safety1-38

Proper Tools

Use only tools suited to the task. Using damaged, low quality,faulty, or makeshift tools could cause personal injury. There is adanger that pieces from, chisels with crushed heads, orhammers, may get into your eyes and cause blindness.

Use of Lighting

When checking fuel, oil, battery electrolyte, or window washingfluid, always use lighting with antiexplosion specifications. Ifsuch lighting equipment is not used, there is a danger of anexplosion.

If work is carried out in dark places without using lighting, it maylead to injury, so always use proper lighting.

Even if the place is dark, never use a lighter or flame instead oflighting. There is a danger of fire. There is also danger thatbattery gas may catch fire and cause an explosion.

Fire Prevention and Explosion Prevention

All fuels, most lubricants and some coolant mixtures areflammable. Leaking fuel or fuel that is spilled onto hot surfacesor onto electrical components can cause a fire.

Store all fuels and all lubricants in properly marked containersand away from all unauthorized persons.

Store oily rags and other flammable material in a protectivecontainer.

Do not smoke while you refuel the machine or while you are in arefueling area.

Do not smoke in battery charging areas or in areas that containflammable material.

Clean all electrical connections and tighten all electricalconnections. Check the electrical wires daily for wires that areloose or frayed. Tighten all lose electrical wires before youoperate the machine. Repair all frayed electrical wires beforeyou operate the machine.

Remove all flammable materials before they accumulate on themachine.

Do not weld on pipes or on tubes that contain flammable fluids.Do not flame cut on pipes or on tubes that contain flammablefluids. Before you weld on pipes or on tubes or before you flamecut on pipes or on tubes, clean the pipes or tubes thoroughlywith a nonflammable solvent.

HDO1037L

Figure 33

HDO1040L

Figure 34

HDO1015I

Figure 35

OP0011721-39

Safety

Burn Prevention

When checking the radiator coolant level, shut down engine, letthe engine and radiator cool down, then check the coolantrecovery tank. If the coolant level in the coolant recovery tank isnear the upper limit, there is enough coolant in the radiator.

Loosen the radiator cap gradually to release the internalpressure before removing the radiator cap.

If the coolant level in the coolant recovery tank is below thelower limit, add coolant.

Cooling system conditioner contains alkali. Alkali can causepersonal injury. Do not allow alkali to contact the skin, the eyes,or the mouth.

Allow cooling system components to cool before you drain thecooling system.

Hot oil and hot components can cause personal injury. Do notallow hot oil or hot components to contact the skin.

Remove hydraulic tank filter plug only after the engine has beenstopped. Make sure that hydraulic tank filter plug is cool beforeyou remove it with your bare hand. Remove hydraulic tank filterplug slowly to relieve pressure.

Relieve all pressure in the hydraulic oil system, in the fuelsystem, or in the cooling system before you disconnect anylines, fittings, or related items.

Batteries give off flammable fumes that can explode.

Do not smoke while you are checking the battery’s electrolytelevels.

Electrolyte is an acid. Electrolyte can cause personal injury. Donot allow electrolyte to contact the skin or the eyes.

Always wear protective glasses when you work on batteries.

HAAE1980Figure 36

OP001172Safety1-40

Welding Repairs

When carrying out welding repairs, carry out the welding in aproperly equipped place. The welding should be performed by aqualified worker. During welding operations, there is the dangerof, generation of gas, fire, or electric shock, so never let anunqualified worker do welding.

The qualified welder must do the following:

• To prevent explosion of the battery, disconnect thebattery terminals and remove batteries.

• To prevent generation of gas, remove paint from thelocation of the weld.

• If hydraulic equipment, piping or places close to themare heated, a flammable gas or mist will be generatedand there is a danger of it catching fire. To avoid this,never subject these places to heat.

• Do not weld on pipes or on tubes that containflammable fluids. Do not flame cut on pipes or ontubes that contain flammable fluids. Before you weldon pipes or on tubes or before you flame cut on pipesor on tubes, clean the pipes or tubes thoroughly witha nonflammable solvent.

• If heat is applied directly to rubber hoses or pipingunder pressure, they may suddenly break, so coverthem with a fireproof covering.

• Wear protective clothing.

• Make sure there is good ventilation.

• Remove all flammable objects and provide a fireextinguisher.

CAUTIONWhen you connect or disconnect connectors between ECUand Engine or connector between ECU and the machine,always disconnect the source power to protect damage ofthe ECU.

If you don't observe this procedure, the ECU would bedamaged or the engine would operate abnormally.

OP0011721-41

Safety

Preparation for Electrical Welding on Body Structure

To prevent damage to ECU by electrical welding, pleaseobserve the following procedures:

1. Open the door of the battery cover.

2. Detach the cover after loosening the bolts on the battery.

3. Detach the positive and negative terminal cables from thebattery.

4. Detach the undercover, and after that detach the connector(1) from the ECU that are installed at the engine.

5. Proceed with welding.

6. After welding, carefully reassemble the connector.

7. Connect the battery terminal cables.

8. Reassemble the undercover under the engine.

9. Reassemble the cover over the battery.

10. Close the cover of the battery.

Warning for Counterweight and Front Attachment Removal

FG000312

Figure 37

Figure 38 FG000335

1

FG000371

Figure 39

DANGERDOOSAN warns any user, that removal of the counterweightfrom the machine, front attachment or any other part, mayaffect the stability of the machine. This could causeunexpected movement, resulting in death or seriousinjuries. DOOSAN is not liable for any misuse.

Never remove counterweight or front attachment unless theupper structure is in-line with the lower structure.

Never rotate the upper structure once the counterweight orfront attachment has been removed.

OP001172Safety1-42

Precautions for Removal, Installation, and Storage of Attachments

Before starting removal and installation of attachments, decideon the team leader.

Do not allow anyone except the authorized workers close to themachine or attachment.

Place attachments that have been removed from the machine ina safe place so they do not fall. Put up a fence around theattachments and take other measures to prevent unauthorizedpersons from entering.

Precautions When Working on Machine

When carrying out maintenance operations on the machine,keep area around your feet clean and tidy to prevent falls.Always do the following:

• Do not spill oil or grease.

• Do not leave tools laying about.

• Watch your step when walking.

Never jump down from the machine. When getting on or off themachine, use the steps and handrails, and maintain athree-point contact (both feet and one hand or both hands andone foot) to support yourself securely.

If the job requires it, wear protective clothing.

To prevent injury from slipping or falling, when working on thehood or covers, never use any area except the area equippedwith nonslip pads.

Lock Inspection Covers

When carrying out maintenance with the inspection cover open,lock the cover securely in position with the lock bar.

If maintenance work is carried out with the inspection coveropen but not locked, there is a danger that it may suddenly closeand cause injury if there is a gust of wind.

HDO1041L

Figure 40

ARO1380L

Figure 41

OP0011721-43

Safety

Prevention of Crushing and Cutting

You should always have at least two people working together ifthe engine must be run during service. One person needs toremain in the operator's seat, ready to work the controls or stopthe machine and shut off the engine.

Unless you are instructed otherwise, never attempt adjustmentswhile the machine is moving or while the engine is running.

Stay clear of all rotating parts and moving parts.

Keep objects away from moving fan blades. The fan blades willthrow objects and the fan blades can cut objects.

Do not use a wire rope cable that is kinked or frayed. Weargloves when you handle a wire rope cable.

When you strike a retainer pin, the retainer pin might fly out. Theloose retainer pin can injure personnel. Make sure that area isclear of people when you strike a retainer pin. To avoid injury toyour eyes, wear protective glasses when you strike a retainerpin.

Track Tension Adjustments Require Caution

Never turn out the track tension grease valve. To releasepressure from the crawler frame track tension assembly, youshould NEVER attempt to disassemble the track adjuster orattempt to remove grease fitting or valve assembly.

Keep your face and body away from the valve. Refer to the trackadjustment procedure in the Operator and Maintenance Manualor Shop Manual.

Supports and Blocking for Work Equipment

Do not allow weight or equipment loads to remain suspended.

Lower everything to the ground before leaving the operator'sseat.

Do not use hollow, cracked or unsteady wobbling supports.

Do not work under any equipment supported only by a liftingjack.

HAOA110L

Figure 42

HDO1042L

Figure 43

OP001172Safety1-44

Action When Abnormality Is Found During Inspection

If any abnormality is found during inspection, always carry outrepairs. In particular, if the machine is used when there are stillproblems with the brake or work equipment systems, it may leadto serious injury.

If necessary depending on the type of failure, please contactyour DOOSAN distributor for repairs.

Precautions with High-pressure Lines, Tubes and Hoses

When inspecting or replacing high-pressure piping or hoses,check to verify that pressure has been released from the circuit.Failure to release the pressure may lead to serious injury.Always do the following:

• Wear protective glasses and leather gloves.

• Fluid leaks from hydraulic hoses or pressurizedcomponents can be difficult to see but pressurized oilhas enough force to pierce the skin and causeserious injury. Always use a piece of wood orcardboard to check for suspected hydraulic leaks.Never use your hands or expose your fingers.

• Do not bend high-pressure lines. Do not strikehigh-pressure lines. Do not install lines, tubes orhoses that are bent or damaged.

• Make sure that all clamps, guards and heat shieldsare installed correctly to prevent vibration, rubbingagainst other parts, and excessive heat duringoperation.

– If any of the following conditions are found,replace the part:

– Damage or leakage from hose end.

– Wear, damage, cutting of covering, or exposureof strengthening wire layer.

– Cover portion is swollen in places.

– There is twisting or crushing at movable parts ofhose.

– Foreign material is embedded in the covering.

– Hose end is deformed.

NOTE: Refer to “Hose In-service Lifetime Limit(European Standard ISO 8331 andEN982 CEN)” on page 4-59, for additionalEuropean regulations.

X

X

HDO1045I

Figure 44

OP0011721-45

Safety

Waste Materials

Physical contact with used motor oil may pose a health risk.Wipe oil from your hands promptly and wash off any remainingresidue.

Used motor oil is an environmental contaminant and may onlybe disposed of at approved collection facilities. To preventpollution of the environment, always do the following:

• Never dump waste oil in a sewer system, rivers, etc.

• Always put oil drained from your machine incontainers. Never drain oil directly onto the ground.

• Obey appropriate laws and regulations whendisposing of harmful materials such as oil, fuel,solvent, filters, and batteries.

HAOA470L

X

Figure 45

OP001172Safety1-46

BATTERY

Battery Hazard Prevention

Battery electrolyte contains diluted sulfuric acid and batteriesgenerate hydrogen gas. Hydrogen gas is highly explosive, andmistakes in handling them can cause serious injury or fire. Toprevent problems, always do the following:

• Do not smoke or bring any flame near the battery.

• When working with batteries, ALWAYS wear safetyglasses and rubber gloves.

• If you spill battery electrolyte on yourself or yourclothes, immediately flush the area with water.

• If battery electrolyte gets into your eyes, flush themimmediately with large quantities of water and see adoctor at once.

• If you accidentally drink battery electrolyte, drink alarge quantity of water or milk, raw egg or vegetableoil. Call a doctor or poison prevention centerimmediately.

• When cleaning the top surface of the battery, wipe itwith a clean, damp cloth. Never use gasoline, thinner,or any other organic solvent or detergent.

• Tighten the battery caps securely.

• If the battery electrolyte is frozen, do not charge thebattery or start the engine with power from anothersource. There is a danger that battery may catch fire.

• When charging the battery or starting with powerfrom another source, let the battery electrolyte meltand check that there is no leakage of batteryelectrolyte before starting the operation.

• Always remove battery from the machine beforecharging.

HAAE2100

Figure 46

OP0011721-47

Safety

Boost Starting or Charging Engine Batteries

If any mistake is made in the method of connecting the boostercables, it may cause an explosion or fire. Always do thefollowing:

• Turn off all electrical equipment before connectingleads to the battery. This includes electrical switcheson the battery charger or boost starting equipment.

• When boost starting from another machine or vehicledo not allow the two machines to touch. Wear safetyglasses or goggles while required batteryconnections are made.

• 24 volt battery units consisting of two seriesconnected twelve volt batteries have a cableconnecting one positive terminal on one of the 12 voltbatteries to a negative terminal on the other battery.Booster or charger cable connections must be madebetween the nonseries connected positive terminalsand between the negative terminal of the boosterbattery and the metal frame of the machine beingboosted or charged. Refer to the procedure andillustration in “Starting Engine With a Booster Cable”on page 3-8 of this manual.

• Connect positive cable first when installing cablesand disconnect the negative cable first whenremoving them. The final cable connection, at themetal frame of the machine being charged or booststarted, should be as faraway from the batteries aspossible.

HAOA310L

Figure 47

OP001172Safety1-48

TOWING

Precautions When Towing

If any mistake is made in the method of selecting or inspectingthe towing wire or in the method of towing, it may lead to seriouspersonal injury. Always do the following:

• Always use the method of towing given in thisOperation and Maintenance Manual. Do not use anyother method.

• Use leather gloves when handling the wire rope.

• When carrying out the preparation work for towingwith two or more workers, determine the signals touse and follow these signals correctly.

• Always fit the towing rope to the left and right hooksand secure in position.

• If the engine on the problem machine will not start orthere is a failure in the brake system. always contactyour DOOSAN distributor.

• Never go between the towing machine and the towedmachine during the towing operation.

• It is dangerous to carry out towing on slopes, soselect a place where the slope is gradual. If there isno place where the slope is gradual, carry outoperations to reduce the angle of the slope beforestarting the towing operation.

• When towing a problem machine, always use a wirerope with a sufficient towing capacity.

• Do not use a frayed, kinked rope or a rope with anyloss of diameter.

• Do not use the lightweight towing hook for towinganother machine.

FG014871

Cloth

Towing Wire

Towing Wire

Figure 48

OP0011721-49

Safety

SHIPPING AND TRANSPORTATION

Obey State and Local Over-the-Road Regulations

Check state and local restrictions regarding weight, width andlength of a load before making any other preparation fortransport.

The hauling vehicle, trailer and load must all be in compliancewith local regulations governing the intended shipping route.

Partial disassembly or teardown of the excavator may benecessary to meet travel restrictions or particular conditions atthe work site. See the Shop Manual for information on partialdisassembly.

Refer to the Transportation and Shipping section of thisOperation and Maintenance Manual for information on loading,unloading and towing.

OP001172Safety1-50

EXCAVATOR RATED LIFT CAPACITY TABLES

To operate safely the excavator should be on a firm, level anduniformly supporting surface. The operator is expected to makedue allowance for all specific work site and lift related conditions,and respond to changes in those conditions that could pose ahazard. The following could all cause hazardous conditions andaccidents or injuries:

• Soft or uneven ground.

• Unlevel terrain.

• Side loads.

• Modifications or poor maintenance of the excavator.

• Failure to lift squarely over the end or over the side ofthe machine.

When a load is in the air, the operator must remain alert.

• Avoid side loads that may be caused by unevenslings, traveling with the load or swinging too quickly.

• The load can become unbalanced if the hook line istwisted and starts to rotate. If the surface area of theload is large enough, wind gusts can create side loads.

• Keep the bucket hook point directly over the load.Tag lines on opposite sides of the load can helpmaintain greater stability against side loads and windgusts.

Figure 49

WARNINGLet everybody be away from the boom cylinder. While liftingoperation, boom, arm, bucket hoses might burst and thenhigh-pressure oil will be ejected at high-speed.

If that failure mode takes place, handling weight or frontstructure might fall by its gravity to the ground to causefatal injury to the person.

When changing the hoses record the part numbers of thehoses to factory log book.

Do the service job under the company's serviceman.

WARNINGAll rated lift capacities are based on the machine and theload both remaining level at all times. DO NOT EXCEED THERATED LIFT CAPACITY. Lifting loads greater than thoseshown in the rated capacity tables can cause catastrophicequipment failure and/or structural collapse of the machine.

OP0011721-51

Safety

Avoid traveling with a suspended load. Before swinging (or ifrequired, traveling), bring the load into an arm position (radiusand height) that has a safer weight capacity rating and adequatemovement clearance. The operator and all work site personnelshould be thoroughly familiar with safety instructions andprocedures within this Operation and Maintenance Manual.

The following weight loads are in compliance with SAE (J1097)and ISO applicable, recommended standards for hydraulicexcavators performing lifting operation on a firm supportingsurface. An asterisk (*) next to the lift rating indicates rated loaddoes not exceed 87% of hydraulic capacity. All other ratingshave been determined not to exceed 75% of tipping capacity.

Do not attempt to lift or hold any load that exceeds rated loadcapacity at the specified distances (from the machine's rotationcenterline and height - see "lift radius" and "lift height" in thereference drawing, Figure 50).

The weight of slings and any auxiliary lifting device (and/or theweight difference of any attachment heavier than standardconfiguration) must be deducted from the rated lift capacity todetermine allowable net lifting load. The lift point should be onthe back of the bucket, as shown in Figure 50.

FG000337

Centerlineof Rotation

Lifting Radius

LiftingPoint

LiftingPointHeight

Ground Line (Machine Supporting Surface)

Figure 50

IMPORTANT

Select the Digging Mode switch on the Instrument Panelbefore using the excavator for lifting work. Engine andhydraulic oil should both be fully warmed up to operatingtemperature before starting a lift.

OP001172Safety1-52

FG014472

6.57*

9.33*

6.57*

*

*

9.33

12.28*

15.65*12.28*

15.65

19.75* 19.75*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

* *

*

*

*

*

*

*

*

*

*

* *

*

* *

*

*

10.78*

4.70*

12.40

12.64

13.10

11.93

12.31

12.31

12.38

12.80

11.98

10.78

13.23

7.76

13.29

12.98

14.39

14.88

14.32

16.01

16.87

16.27

8.74

8.95

9.27

11.93* * 9.30*

*

*

*

*

*

*

*9.30

7.76*

*

* *

8.63

8.59

8.62

6.86

10.32

9.67

8.82

7.85

10.72

10.84

7.00

5.08

4.70

10.78

9.46

12.34

15.76

7.00

5.08

9.46

12.34

15.76

6.64

6.80

7.02

7.27

6.86

5.90

5.98

5.10

5.995.99*

*

*

6.54

6.50

5.79

5.84

3.56

3.61

3.67

3.74

3.80

5.68

5.57

5.18

4.84

4.28*

5.94

6.39

7.13

4.59*4.41*

4.30*4.25*

3.50

3.44

3.45

3.54

3.65

3.93

4.38

3.72

3.99

4.30

4.25*

4.28*

6.96

7.05

6.81

6.37

6.91

6.89

5.94*5.59*

5.38*

*

4.29

4.37

4.47

4.58

4.24

4.22

4.68

4.78

4.84

8.60

8.21

7.61

6.95

4.58*

8.51

8.48

8.49

6.30*5.74*

5.32*

*

*

*

* *

*

5.11*

5.27

5.38

5.53

5.69

5.19

5.16

5.17

5.86

5.74

5.32

5.11*

4.58*

9.10

9.27

9.32

9.27

8.82

8.41

7.84

9.10

8.82

8.41

7.85

7.10

METRIC

FEET

B(m)

A(m)

8

2 3 4 5 6 7 8

BOOM

BUCKETSHOE

UNIT

ARM6.245 m (20' 6'')

TRACK WIDTH 3.2 m (10' 6") STD TRACK

SAE 1.27 m3 (CECE 1.1 m3)600 mm (24")

RATING OVER FRONTRATING OVER SIDE OR 360 degree1,000 kg (1,000 lb)

3.1 m (10' 2")

9 MAX. REACH

7

6

5

4

3

2

1

-1

-2

-3

12.52 12.2315.19 8.7119.5419.54 8.08 5.158.24 5.25 7.09-4

12.74 10.8513.45 8.8717.0817.08 8.54 6.59

10.65 6.51

6.09-5

10.5610.56 8.98 8.98

8.72 6.73

10.04 6.58

4.66-6

10' 15' 20' 25' 30' MAX. REACH

20'

25'

15'

10'

5'

-5'

-20'

0 (GROUND)

0 (GROUND)

A (ft)B (ft)

1. LOAD POINT IS THE HOOK ON THE BACK OF THE BUCKET.

2. * RATED LOADS ARE BASED ON HYDRAULIC CAPACITY.

3. RATED LOADS DO NOT EXCEED 87 % OF HYD. CAPACITY OR 75 % OF TIPPING CAPACITY.

A(m)

A (ft)

24.52* 24.52

23.01

22.33* * 22.33

22.11

21.81

20.04

22.34

23.37

28.09

31.46

10.92

28.04*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

28.04

15.97

10.92

15.97

32.42

16.96*

14.87

15.66

13.89* *

*

*

*

*

*