Komatsu Pc88mr-10 Manual

WENAM00042

HYDRAULIC EXCAVATOR

PC88MR-10

Operation &

Maintenance Manual

SERIAL NUMBERS

ORIGINAL INSTRUCTIONS

Unsafe use of this machine may cause serious

injury or death. Operators and maintenance

personnel must read this manual before operating

or maintaining this machine. This manual should

bekeptinsidethecabforreferenceandperiodically

reviewed by all personnel whowill come into

contactwiththemachine.

WARNING

F10236 and up

7001 and up

FOREWORD

Komatsu recommends that any service parts used for maintenance, repair or

replacement of emission control systems be genuine new Komatsu or Ko-

matsu approved rebuilt parts or assemblies or others parts of equivalent

quality, and that the engine be serviced by an authorized Komatsu distribu-

tor. Failure to follow these recommendations could result in ineffective serv-

ice, damage to the product or safety risks (including personal injury or

death).

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READ THIS MANUAL

This manual gives details of the operation and methods of inspection and maintenance for this machine that

must be obeyed in order to use the machine safely. Most accidents are caused by the failure to follow funda-

mental safety rules for the operation and maintenance of machines.

Read, understand and follow all precautions and warnings in this manual and on the machine before performing

operation and maintenance. Failure to do so may result in serious injury or death.

Komatsu cannot predict every circumstance that might involve a potential hazard when the machine is used.

Therefore, the safety messages in this manual and on the machine may not include all possible safety precau-

tions.

If you perform any operation, inspection, or maintenance under conditions that are not described in this manual,

understand that it is your responsibility to take the necessary precautions to ensure safety. In no event should

you or others engage in the prohibited uses or actions described in this manual. It is dangerous to perform im-

proper operation and maintenance of the machine. It may cause serious injury or death.

If you sell the machine, be sure to give this manual to the new owner together with the machine.

Always keep this Operation and Maintenance Manual in the storing location so that all relevant personnel can

read it at any time.

Keep it in the magazine box on the left side of the operator's

seat.

If this manual is lost or damaged, contact Komatsu or your Ko-

matsu distributor and tell them about the machine model name

and the serial No. immediately to arrange for its replacement.

For details regarding the machine model name and the serial

No., see the machine serial No. plate. In order to arrange the

proper Operation and Maintenance Manual, you will need to

provide the machine model name and the serial No.

This manual uses the International System of Units (SI) for

units of measurement. For reference, units that have been

used in the past are given in { }.

The explanations, values, and illustrations in this manual have been prepared based on the latest information

available as of the date of its publication. Continuing improvements in the design of this machine may lead to

additional changes that are not reflected in this manual. Consult Komatsu or your Komatsu distributor for the

latest available information concerning your machine or with questions regarding information contained in this

manual.

The numbers in the illustrations correspond to the numbers in ( ) in the text. (Example: 1 → (1))

Komatsu delivers machines that comply with all applicable regulations and standards of the country to which it

has been shipped. If this machine has been purchased in another country, it may lack certain safety devices and

specifications that are necessary for use in your country. If there is any question about whether your product

complies with the applicable standards and regulations of your country, consult your Komatsu distributor before

operating the machine.

READ THIS MANUAL FOREWORD

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SAFETY INFORMATION

To enable you to use the machine safely, and to prevent personal injury to operators, service personnel or by-

standers, the precautions and warnings included in this manual and the safety signs attached to the machine

must always be observed.

To identify important safety messages in the manual and on the machine labels, the following signal words are

used.

The "Safety Alert Symbol" identifies important safety messages on machines, in manuals, and elsewhere. When

you see this symbol, be alert to the risk of personal injury or death. Follow the instructions in the safety mes-

sage.

This signal word indicates an imminently hazardous situation which, if not avoided, will result

in death or serious injury.

This signal word indicates a potentially hazardous situation which, if not avoided, could result

in death or serious injury.

This signal word indicates a potentially hazardous situation which, if not avoided, may result

in minor or moderate injury. It may also be used to alert against unsafe practices that may

cause property damage.

The following signal words are used to alert you to information that must be followed to avoid damage to the

machine.

If precautions described are not observed, the machine may be damaged or the service life

may be reduced.

This word is used for information that is useful to know.

FOREWORD SAFETY INFORMATION

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SAFETY LABELS

Safety labels are affixed to the machine to inform the operator or maintenance worker on the spot when carrying

out operation or maintenance of the machine that may involve hazard.

This machine uses "Safety labels using pictograms" to indicate safety procedures.

SAFETY LABELS USING PICTOGRAMS

Safety pictograms use a picture to express a level of hazardous

condition equivalent to the signal word. These safety picto-

grams use pictures in order to let the operator or maintenance

worker understand the level and type of hazardous condition at

all times. Safety pictograms show the type of hazardous condi-

tion at the top or left side and the method of avoiding the haz-

ardous condition at the bottom or right side. In addition, the

type of hazardous condition is displayed inside a triangle and

the method of avoiding the hazardous condition is shown inside

a circle.

Komatsu cannot predict every circumstance that might involve

a potential hazard in operation and maintenance. Therefore,

the safety messages in this manual and on the machine may

not include all possible safety precautions.

If any procedures or actions not specifically recommended or

allowed in this manual are used, it is your responsibility to take

the necessary steps to ensure safety

In no event should you engage in prohibited uses or actions de-

scribed in this manual.

The explanations, values, and illustrations in this manual were prepared based on the latest information availa-

ble at that time. Continuing improvements in the design of this machine can lead to changes in detail which may

not be reflected in this manual

Consult Komatsu or your Komatsu distributor for the latest available information of your machine or for ques-

tions regarding information in this manual.

The numbers in the illustrations correspond to the numbers in ( ) in the text.

SAFETY LABELS FOREWORD

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NOISE

Two labels indicating the machine noise level are affixed on the machine.

• Sound pressure level at the operator’s station, measured

according to ISO 6396 (Dynamic test method, simulated

working cycle).

The maximum value of the standard deviation of the meas-

ured time-averaged A-weighted emission sound pressure

level at the operator’s position is 2.5dB, in accordance with

ISO 11201.

• Sound power level emitted by the machine, measured ac-

cording to ISO 6395 (Dynamic test method, simulated

working cycle).

This is the guaranteed value as specified in European di-

rective 2000/14/EC. This value includes an uncertainty-of

1.6 dB.



ISO 6396

2000/14/EC

FOREWORD NOISE

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VIBRATION LEVELS

When used for its intended purpose, levels of vibration for the earth-moving machine transmitted from the oper-

ator's seat are lower than or equal to the tested vibrations for the relative machinery class in compliance with

ISO 7096.

The actual acceleration value for the hands and arms is less than or equal to 2.5 m/s2 , the uncertainty for this

value is 1.2 m/s2 according to EN12096:1997.

The actual acceleration value for the body is less than or equal to 0.5 m/s2, the uncertainty for this value is 0.2

m/s2 according to EN12096:1997.

These values were determined using a representative machine and measured during the typical operating con-

dition indicated below according to the measurement procedures that are defined in the standards ISO 2631/1

and ISO 5349.

VIBRATION - OPERATING CONDITION

Excavating (Digging-loading-rotating-unloading-rotating)

VIBRATION LEVELS FOREWORD

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GUIDE TO REDUCE VIBRATION LEVELS ON MACHINE

The following guides can help an operator of this machine to reduce the whole body vibration levels:

1. Use the correct equipment and attachments.

2. Maintain the machine according to this manual

• Tension of crawler (for crawler machines)

• Brake and steering systems

• Controls, hydraulic system and linkages

3. Keep the terrain where the machine is working and travelling in good condition

• Remove any large rocks or obstacles

• Fill any ditches and holes

• Site manager should provide machine operators with machine and schedule time to maintain terrain

conditions

4. Use a seat that meets ISO 7096 and keep the seat maintained and adjusted

• Adjust the seat and suspension for the weight and size of the operator

• Wear seat belt

• Inspect and maintain the seat suspension and adjustment mechanisms

5. Steer, brake, accelerate, and move the attachment levers and pedals slowly so that the machine moves

smoothly

6. Adjust the machine speed and travel path to minimize the vibration level

• When pushing with bucket or blade, avoid sudden loading; load gradually

• Drive around obstacles and rough terrain conditions

• Slow down when it is necessary to go over rough terrain

• Make the curve radius of travelling path as large as possible

• Travel at low speed when travelling around sharp curves

7. Minimize vibrations for long work cycle or long distance travelling

• Reduce speed to prevent bounce

• Transport machines long distances between worksites

8. The following guidelines can be effective to minimize risks of low back pain

• Operate the machine only when you are in good health

• Provide breaks to reduce long periods of sitting in the same posture

• Do not jump down from the cab or machine

• Do not repeatedly handle and lift loads

FOREWORD VIBRATION LEVELS

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INTRODUCTION

MAIN USE OF MACHINE

This Komatsu machine is designed to be used mainly for the following work:

• Digging work

• Ditching work

• Loading work

• Levelling work

For details of work procedure, see MACHINE OPERATIONS AND CONTROLS “RECOMMENDED APPLICA-

TIONS (3-166)”.

WARNING

The excavator used in handling operations must conform with current local regulations and be equip-

ped with safety valves and an overload alarm in compliance with EN 474-5.

DEMOLITION WORK

WARNING

• A demolition machine is a machine based on earth

moving machinery (see EN ISO 6165) and including

equipment and attachment (working tool - e.g. pro-

cessor or breaker) specifically designed to demolish,

cut, loosen, separate, pick up, transport and distribute

component parts of buildings or civil engineering

structures.

• This machine is not prepared for use in Demolition.

• Using this machine in demolition work gives an in-

creased risk of serious injury or death.

• All Komatsu machines that are specifically designed,

and can be used for demolition work, will display the

Komatsu demolition decal.

• If the machine does not display this decal and it is

necessary to carry out demolition work, contact your

distributor for information on demolition machinery compliant with the applicable standards.

INTRODUCTION FOREWORD

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DIRECTIONS OF MACHINE

(A) Front

(B) Rear

(D) Right

(E) Operator's seat

(F) Sprocket

In this manual, the terms front, rear, left, and right refer to the travel direction as seen from the operator's seat

when the operator's seat is facing the front and the sprocket is at the rear of the machine.

FOREWORD INTRODUCTION

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VISIBILITY FROM OPERATOR'S SEAT

The visibility of this machine required by visibility standards (ISO 5006) are shown in the drawing below.

Proximity visibility

The figure below shows a visibility from the machine at a spot 1.0 m away from outside the machine and 1.5 m

above the ground.

12 m circumference visibility

The figure below shows a visibility from the machine for a circumference of 12 m. Shaded areas (A), (B), and

other visibility assistant devices. Be fully aware that there is an area where the operator cannot see when oper-

ating the machine.

Protective structures

This machine is equipped with a structure to protect the operator conforming to ISO12117-2: 2008.

INTRODUCTION FOREWORD

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PRODUCT INFORMATION

When requesting service or ordering replacement parts, inform your Komatsu distributor of the following items.

LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERI-

AL NO. PLATE

This is on the left side of the mounting location of the swing bracket.

The design of the nameplate differs according to the district.

LOCATION OF ENGINE NUMBER PLATE

This is on the side of the filler port bracket.

FOREWORD PRODUCT INFORMATION

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FLUORINATED GREENHOUSE GASES

Product contains fluorinated greenhouse gases.

SERVICE METER LOCATION

This is displayed on the machine monitor.

YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR

Machine serial No.

Engine serial No.

Product identification

number (PIN)

Manufacturers name:

Address: Komatsu Italia Manufacturing S.p.A.

Via Atheste, 4

35042 Este (PD)

Italy

Distributor name

Address

Service Personnel

Phone/Fax

Product contains

fluorinated

greenhouse gases

HFC-134a

GWP 1430 CO2eq. 1.00 t

0.7 kg

PRODUCT INFORMATION FOREWORD

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SERIAL PLATE

A SERIAL NUMBER E MACHINE DESIGNATION/TYPE

B WEIGHT F YEAR OF CONSTRUCTION

C PRODUCT IDENTIFICATION NUMBER G ENGINE POWER

D MANUFACTURER

FOREWORD SERIAL PLATE

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DECLARATION OF CONFORMITY

The manufacturer:

Komatsu Italia Manufacturing S.p.A.

Via Atheste, 4

35042 Este (PD)

Italy

Declares that this machine:

PC88MR-10

Fulfils all the relevant provisions of following EC Directives:

Machine Directive 2006/42/EC

Electro Magnetic Compatibility Directive 2004/108/EC until 19 April 2016

2014/30/EU after 20 April 2016

Outdoor Noise Directive 2000/14/EC amended by 2005/88/EC

Radio Equipment and Telecommunications Terminal

Equipment Directive 1999/5/EC until 12 June 2016

Radio Equipment Directive 2014/53/EU after 13 June 2016

DECLARATION OF CONFORMITY FOREWORD

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TABLE OF CONTENTS

FOREWORD.................................................................................................................................................... 1-1

READ THIS MANUAL............................................................................................................................... 1-2

SAFETY INFORMATION .......................................................................................................................... 1-3

SAFETY LABELS ..................................................................................................................................... 1-4

NOISE....................................................................................................................................................... 1-5

VIBRATION LEVELS ................................................................................................................................ 1-6

VIBRATION - OPERATING CONDITION ........................................................................................... 1-6

GUIDE TO REDUCE VIBRATION LEVELS ON MACHINE ................................................................ 1-7

INTRODUCTION ...................................................................................................................................... 1-8

MAIN USE OF MACHINE .................................................................................................................. 1-8

DEMOLITION WORK......................................................................................................................... 1-8

DIRECTIONS OF MACHINE.............................................................................................................. 1-9

VISIBILITY FROM OPERATOR'S SEAT .......................................................................................... 1-10

PRODUCT INFORMATION......................................................................................................................1-11

LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE .......1-11

LOCATION OF ENGINE NUMBER PLATE .......................................................................................1-11

FLUORINATED GREENHOUSE GASES......................................................................................... 1-12

SERVICE METER LOCATION......................................................................................................... 1-12

YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR............................................................ 1-12

SERIAL PLATE ....................................................................................................................................... 1-13

DECLARATION OF CONFORMITY ........................................................................................................ 1-14

SAFETY........................................................................................................................................................... 2-1

SAFETY.................................................................................................................................................... 2-2

SAFETY LABELS ..................................................................................................................................... 2-4

LOCATION OF SAFETY LABELS...................................................................................................... 2-5

CONTENTS OF SAFETY LABELS .................................................................................................... 2-7

GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE .................................... 2-18

PRECAUTIONS BEFORE STARTING OPERATION........................................................................ 2-18

PREPARATIONS FOR SAFE OPERATION ..................................................................................... 2-18

PRECAUTIONS TO PREVENT FIRE............................................................................................... 2-20

PRECAUTIONS WHEN GETTING ON OR OFF MACHINE............................................................. 2-22

DO NOT GET CAUGHT IN WORK EQUIPMENT ............................................................................ 2-24

PROTECTION AGAINST FALLING, FLYING OR INTRUDING OBJECTS....................................... 2-24

ACTIONS IN THE EVENT OF DAMAGE TO SAFETY STRUCTURES............................................ 2-24

UNAUTHORIZED MODIFICATION .................................................................................................. 2-24

PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS .................................................... 2-25

PRECAUTIONS RELATED TO CAB GLASS ................................................................................... 2-25

PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING..................................................... 2-25

PRECAUTIONS FOR OPERATION ........................................................................................................ 2-26

PRECAUTIONS FOR JOBSITE....................................................................................................... 2-26

START ENGINE............................................................................................................................... 2-29

PRECAUTIONS FOR OPERATION ................................................................................................. 2-31

PRECAUTIONS FOR TRANSPORTATION...................................................................................... 2-37

TOWING AND BEING TOWED........................................................................................................ 2-38

LIFTING OPERATION BY USING BUCKET WITH HOOK............................................................... 2-39

LIFTING OPERATION BY USING LIFTING DEVICE (OPTIONAL EQUIPMENT) ........................... 2-40

PRECAUTIONS FOR MAINTENANCE................................................................................................... 2-42

PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE ................................... 2-42

PRECAUTIONS FOR CHECK AND MAINTENANCE ...................................................................... 2-46

OPERATION .................................................................................................................................................... 3-1

GENERAL VIEW....................................................................................................................................... 3-2

MACHINE EQUIPMENT NAME ......................................................................................................... 3-2

CAB EQUIPMENT NAMES................................................................................................................ 3-4

CONTROLS AND GAUGES NAMES................................................................................................. 3-5

EXPLANATION OF COMPONENTS......................................................................................................... 3-9

EXPLANATION OF MACHINE MONITOR EQUIPMENT (VERSION WITH REAR CAMERA) ........... 3-9

FOREWORD TABLE OF CONTENTS

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EXPLANATION OF MACHINE MONITOR EQUIPMENT ..................................................................3-11

SWITCHES...................................................................................................................................... 3-79

CONTROL LEVERS AND PEDALS................................................................................................. 3-86

OTHER EQUIPMENT ...................................................................................................................... 3-91

MACHINE OPERATIONS AND CONTROLS ........................................................................................ 3-109

CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE ...................................................... 3-109

METHOD FOR STARTING ENGINE.............................................................................................. 3-132

METHOD FOR OPERATIONS AND CHECKS AFTER STARTING ENGINE ................................. 3-136

METHOD FOR STOPPING ENGINE ............................................................................................. 3-146

METHOD FOR STARTING MACHINE (TRAVEL FORWARD AND REVERSE) AND STOPPING MA-

CHINE........................................................................................................................................ 3-147

METHOD FOR STEERING MACHINE........................................................................................... 3-150

METHOD FOR SWINGING MACHINE .......................................................................................... 3-152

METHOD FOR OPERATING WORK EQUIPMENT ....................................................................... 3-152

HANDLE WORKING MODE .......................................................................................................... 3-154

PROHIBITED OPERATIONS ......................................................................................................... 3-156

PRECAUTIONS FOR OPERATION ............................................................................................... 3-161

PRECAUTIONS FOR WORKING ON SLOPE ............................................................................... 3-163

METHOD FOR ESCAPING FROM MUD ....................................................................................... 3-165

RECOMMENDED APPLICATIONS................................................................................................ 3-166

METHOD FOR LIFTING OBJECTS WITH LIFTING DEVICE ........................................................ 3-168

METHOD FOR REPLACING AND INVERTING BUCKET.............................................................. 3-170

METHOD FOR PARKING MACHINE............................................................................................. 3-173

METHOD FOR CHECKING AFTER FINISHING WORK................................................................ 3-175

LOCK............................................................................................................................................. 3-176

HANDLE AIR CONDITIONER............................................................................................................... 3-183

EXPLANATION OF AIR CONDITIONER EQUIPMENT.................................................................. 3-184

METHOD FOR OPERATING AIR CONDITIONER......................................................................... 3-188

HANDLE RADIO ................................................................................................................................... 3-195

....................................................................................................................................................... 3-195

STOW ANTENNA .......................................................................................................................... 3-196

HANDLE ROAD LINERS AND RUBBER SHOES................................................................................. 3-197

RECOMMENDED USE OF ROAD LINERS AND RUBBER SHOES.............................................. 3-197

WARRANTY OF ROAD LINERS AND RUBBER SHOES .............................................................. 3-197

PRECAUTIONS WHEN USING ROAD LINERS AND RUBBER SHOES....................................... 3-197

TRANSPORTATION.............................................................................................................................. 3-201

PRECAUTIONS FOR TRANSPORTING MACHINE ...................................................................... 3-201

SELECT TRANSPORTATION METHOD........................................................................................ 3-201

LOADING AND UNLOADING WITH TRAILER .............................................................................. 3-202

METHOD FOR LIFTING MACHINE............................................................................................... 3-207

COLD WEATHER OPERATION............................................................................................................ 3-209

COLD WEATHER OPERATION INFORMATION ........................................................................... 3-209

PRECAUTIONS AFTER DAILY WORK COMPLETION IN COLD WEATHER................................ 3-210

AFTER COLD WEATHER SEASON .............................................................................................. 3-210

PRECAUTIONS FOR LONG-TERM STORAGE ....................................................................................3-211

PREPARATION FOR LONG-TERM STORAGE..............................................................................3-211

MAINTENANCE DURING LONG-TERM STORAGE.......................................................................3-211

STARTING MACHINE AFTER LONG-TERM STORAGE................................................................3-211

TROUBLES AND ACTIONS ................................................................................................................. 3-213

ACTIONS WHEN RUNNING OUT OF FUEL ................................................................................. 3-213

PHENOMENA THAT ARE NOT FAILURES ................................................................................... 3-213

PRECAUTIONS FOR TOWING MACHINE.................................................................................... 3-214

PRECAUTIONS FOR SEVERE JOB CONDITION......................................................................... 3-215

PRECAUTIONS FOR DISCHARGED BATTERY ........................................................................... 3-216

OTHER TROUBLE......................................................................................................................... 3-221

MAINTENANCE............................................................................................................................................... 4-1

PRECAUTIONS FOR MAINTENANCE..................................................................................................... 4-2

CHECK SERVICE METER READING ............................................................................................... 4-2

TABLE OF CONTENTS FOREWORD

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KOMATSU GENUINE REPLACEMENT PARTS ................................................................................ 4-2

KOMATSU GENUINE LUBRICANTS................................................................................................. 4-2

ALWAYS USE CLEAN WASHER FLUID............................................................................................ 4-2

FRESH AND CLEAN LUBRICANTS .................................................................................................. 4-2

CHECK DRAINED OIL AND USED FILTER....................................................................................... 4-2

PRECAUTIONS FOR REFILLING OIL OR FUEL .............................................................................. 4-2

WELDING INSTRUCTIONS............................................................................................................... 4-2

DO NOT DROP THINGS INSIDE MACHINE ..................................................................................... 4-2

DUSTY JOBSITES............................................................................................................................. 4-2

AVOID MIXING OIL............................................................................................................................ 4-3

LOCK INSPECTION COVERS .......................................................................................................... 4-3

BLEED AIR FROM HYDRAULIC CIRCUIT ........................................................................................ 4-3

PRECAUTIONS WHEN INSTALLING HYDRAULIC HOSES ............................................................. 4-3

CHECKS AFTER INSPECTION AND MAINTENANCE...................................................................... 4-3

FUEL AND LUBRICANTS TO MATCH THE AMBIENT TEMPERATURE........................................... 4-3

CLOSE ENGINE HOOD SECURELY................................................................................................. 4-3

OUTLINE OF MAINTENANCE.................................................................................................................. 4-4

HANDLE OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC .................................................. 4-4

HANDLE ELECTRICAL COMPONENTS ........................................................................................... 4-8

STANDARD TIGHTENING TORQUE FOR BOLTS AND NUTS................................................................ 4-9

MAINTENANCE SCHEDULE...................................................................................................................4-11

MAINTENANCE SCHEDULE TABLE................................................................................................4-11

MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER ............................................................. 4-13

MAINTENANCE INTERVAL WHEN DIESEL FUEL MIXED WITH BIO-FUEL IS USED ................... 4-13

MAINTENANCE PROCEDURE .............................................................................................................. 4-14

WHEN REQUIRED .......................................................................................................................... 4-14

CHECKS BEFORE STARTING........................................................................................................ 4-45

EVERY 100 HOURS MAINTENANCE ............................................................................................. 4-46

EVERY 250 HOURS MAINTENANCE ............................................................................................. 4-48

EVERY 500 HOURS MAINTENANCE ............................................................................................. 4-53

EVERY 1000 HOURS MAINTENANCE ........................................................................................... 4-63

EVERY 2000 HOURS MAINTENANCE ........................................................................................... 4-70

EVERY 4000 HOURS MAINTENANCE ........................................................................................... 4-77

EVERY 5000 HOURS MAINTENANCE ........................................................................................... 4-80

SPECIFICATIONS ........................................................................................................................................... 5-1

SPECIFICATIONS .................................................................................................................................... 5-2

EXPLANATION OF LIFT CAPACITY CHART............................................................................................ 5-4

ATTACHMENTS AND OPTIONS ..................................................................................................................... 6-1

PRECAUTIONS FOR USING ATTACHMENT AND OPTIONS.................................................................. 6-2

PRECAUTIONS WHEN SELECTING ................................................................................................ 6-2

READ THE OPERATION AND MAINTENANCE MANUAL THOROUGHLY....................................... 6-2

PRECAUTIONS WHEN REMOVING AND INSTALLING ................................................................... 6-2

PRECAUTIONS WHEN USING ......................................................................................................... 6-2

QUICK COUPLER SYSTEM..................................................................................................................... 6-4

HANDLING QUICK COUPLER .......................................................................................................... 6-4

2-PIECE BOOM........................................................................................................................................ 6-7

2-PIECE BOOM COMPONENTS....................................................................................................... 6-7

2-PIECE BOOM CONTROL PEDAL .................................................................................................. 6-7

METHOD FOR LUBRICATING 2-PIECE BOOM................................................................................ 6-8

SPECIFICATIONS ............................................................................................................................. 6-9

EXPLANATION OF LIFT CAPACITY CHART....................................................................................6-11

HANDLE BUCKET WITH HOOK............................................................................................................. 6-13

PRECAUTIONS FOR OPERATION ................................................................................................. 6-13

HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT .................................................. 6-14

EXPLANATION OF COMPONENTS................................................................................................ 6-14

HYDRAULIC CIRCUIT..................................................................................................................... 6-16

METHOD FOR REMOVING AND INSTALLING ATTACHMENT ...................................................... 6-17

METHOD FOR OPERATING ATTACHMENT................................................................................... 6-23

FOREWORD TABLE OF CONTENTS

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LONG-TERM STORAGE ................................................................................................................. 6-26

SPECIFICATIONS ........................................................................................................................... 6-26

HANDLE MACHINE READY FOR POWERTILT (3rd LINE).................................................................... 6-27

EXPLANATION OF COMPONENTS................................................................................................ 6-27

METHOD FOR OPERATING POWERTILT ...................................................................................... 6-28

ATTACHMENTS AND OPTIONS ............................................................................................................ 6-34

INSTALL ATTACHMENT.................................................................................................................. 6-34

TRACK SHOES SELECTION .......................................................................................................... 6-36

RECOMMENDED ATTACHMENT OPERATIONS................................................................................... 6-37

HYDRAULIC BREAKER .................................................................................................................. 6-37

REPLACEMENT PARTS.................................................................................................................................. 7-1

PERIODIC REPLACEMENT OF DEFINED LIFE PARTS.......................................................................... 7-2

DEFINED LIFE PARTS LIST.............................................................................................................. 7-2

CONSUMABLE PARTS ............................................................................................................................ 7-3

CONSUMABLE PARTS LIST............................................................................................................. 7-3

RECOMMENDED FUEL, COOLANT, AND LUBRICANT .......................................................................... 7-4

LUBRICATION CHART...................................................................................................................... 7-5

METHOD FOR USING FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERA-

TURE ............................................................................................................................................. 7-7

RECOMMENDED BRANDS AND QUALITIES OTHER THAN KOMATSU GENUINE OILS .............. 7-8

INDEX.............................................................................................................................................................. 8-1

TABLE OF CONTENTS FOREWORD

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