Kobelco SK55SRX-7 User manual

Book Code No. S2PS00041ZE02
APPLICABLE No.
READ, UNDERSTAND AND FOLLOW ALL SAFETY
PRECAUTIONS AND INSTRUCTIONS FOUND IN THIS
MANUAL BEFORE OPERATING THE MACHINE.
Destination : ANZ
2022.03
SK55SRX-7 PS05060001~
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

1
［CONTENTS］
IMPORTANT INFORMATION
PREFACE ................................................................................................................................................0-3
STORE OPERATION & MAINTENANCE MANUALS ON THE MACHINE ..................................................0-4
SAFETY INFORMATION IN MESSAGES OR LABELS IN THIS MANUAL AND ON THE MACHINE ...............0-5
SAFETY LABELS ..................................................................................................................................0-6
SUMMARY OF THE MACHINE..................................................................................................................0-7
QUALIFICATION FOR OPERATING THE MACHINE ...................................................................................0-9
CAB WITH ROPS (ROLL-OVER PROTECTIVE STRUCTURE)/FALLING OBJECTS PROTECTIVE
STRUCTURE.....................................................................................................................................0-10
ORDERING PARTS AND SERVICE ......................................................................................................... 0-11
WARRANTY ...........................................................................................................................................0-12
IMPORTANT NOTIFICATION...................................................................................................................0-13
1. SAFETY INSTRUCTIONS
1.1 SAFETY LABELS & DECALS ............................................................................................................1-3
1.1.1 ALWAYS MAKE SURE ALL OF THE SAFETY LABELS ARE LEGIBLE AND NOT
DAMAGED.......................................................................................................................................1-3
1.1.2 "DO NOT OPERATE" TAG...........................................................................................................1-3
1.1.3 LOCATION OF SAFETY LABELS & DECALS ...............................................................................1-4
1.1.4 SAFETY LABELS........................................................................................................................1-7
1.2 PRE-START SAFETY......................................................................................................................1-13
1.2.1 OPERATION RULES.................................................................................................................1-13
1.2.2 PROTECTION TOOLS ..............................................................................................................1-14
1.2.3 ABNORMAL AND EMERGENCY CONDITION............................................................................ 1-15
1.2.4 POTENTIAL HAZARDS WHEN OPERATING .............................................................................1-16
1.2.5 FIRE PREVENTION..................................................................................................................1-19
1.2.6 GETTING ON AND OFF THE MACHINE ....................................................................................1-20
1.2.7 PRE-START UP INSPECTION ON THE MACHINE .....................................................................1-21
1.3 SECURE VISIBILITY.......................................................................................................................1-23
1.3.1 BE AWARE OF YOUR SURROUNDINGS...................................................................................1-23
1.3.2 VISIBILITY MAP .......................................................................................................................1-24
1.4 PRECAUTIONS FOR OPERATION..................................................................................................1-26
1.4.1 STARTING ...............................................................................................................................1-26
1.4.2 TRAVELING .............................................................................................................................1-30
1.4.3 PROHIBITED OPERATIONS .....................................................................................................1-33
1.4.4 SAFETY CHECK ON THE PARKING MACHINE .........................................................................1-38
1.5 AT THE END OF EACH SHIFT.........................................................................................................1-40
1.6 PRECAUTIONS OF INSPECTION & MAINTENANCE .......................................................................1-41
1.6.1 PERIODIC INSPECTIONS ........................................................................................................1-41
1.6.2 BEFORE INSPECTION & MAINTENANCE ................................................................................. 1-42
1.6.3 DURING INSPECTION & MAINTENANCE .................................................................................1-43
1.6.4 CAUTION WHEN WELDING......................................................................................................1-47
1.6.5 AFTER COMPLETION OF MAINTENANCE................................................................................1-48
1.7 PRECAUTIONS FOR BATTERY ......................................................................................................1-49
1.7.1 HANDLING THE BATTERY .......................................................................................................1-49
1.8 HANDLING OF THE ACCUMULATOR OR GAS SPRING ..................................................................1-50
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

2
［CONTENTS］
2. MACHINE FAMILIARIZATION
2.1 BASIC COMPONENTS OF THE MACHINE ........................................................................................2-3
2.2 OPERATOR'S STATION NOMENCLATURE .......................................................................................2-5
2.3 COLOR MULTI-DISPLAY...................................................................................................................2-6
2.3.1 ENGINE COOLANT TEMPERATURE METER ..............................................................................2-6
2.3.2 FUEL LEVEL METER..................................................................................................................2-7
2.3.3 USER MENU ..............................................................................................................................2-7
2.3.4 WORK MODE SELECT SWITCH ...............................................................................................2-15
2.3.5 AUTO DECELERATION SWITCH ..............................................................................................2-16
2.3.6 BUZZER STOP SWITCH...........................................................................................................2-17
2.3.7 WARNING DISPLAY SCREEN...................................................................................................2-19
2.4 HANDLING OF SWITCHES AND METERS ......................................................................................2-21
2.4.1 STARTER SWITCH...................................................................................................................2-21
2.4.2 ENGINE THROTTLE.................................................................................................................2-21
2.4.3 HORN SWITCH ........................................................................................................................2-22
2.4.4 TRAVEL SPEED SELECT SWITCH ...........................................................................................2-22
2.4.5 HOUR METER..........................................................................................................................2-23
2.4.6 WORKING LIGHT .....................................................................................................................2-23
2.4.7 DPF MANUAL REGENERATION SWITCH .................................................................................2-23
2.4.8 12 V POWER SUPPLY ..............................................................................................................2-24
2.4.9 WIPER SWITCH (CAB SPEC.) ..................................................................................................2-24
2.5 HANDLING OF LEVERS AND PEDALS............................................................................................2-25
2.5.1 LOCATION OF LEVERS AND PEDALS ......................................................................................2-25
2.5.2 CONTROL LOCK LEVER ..........................................................................................................2-26
2.5.3 OPERATOR CONTROL LEVERS ..............................................................................................2-27
2.5.4 TRAVEL LEVER .......................................................................................................................2-28
2.5.5 DOZER OPERATION LEVER ....................................................................................................2-28
2.5.6 BOOM SWING FOOT PEDAL....................................................................................................2-29
2.6 HANDLING OF FUSE BOX..............................................................................................................2-30
2.6.1 ABOUT FUSE BOX...................................................................................................................2-30
2.6.2 REPLACING FUSES.................................................................................................................2-30
2.6.3 FUSE CAPACITY AND CIRCUIT NAME ..................................................................................... 2-31
2.7 HANDLING OF FUSIBLE LINK (FOR STARTER) ..............................................................................2-32
2.7.1 FUSIBLE LINK INSPECTION/REPLACEMENT...........................................................................2-32
2.8 CONTROLLER ...............................................................................................................................2-33
2.9 HANDLING OF SEAT BELT .............................................................................................................2-34
2.9.1 HOW TO FASTEN SEAT BELT ..................................................................................................2-34
2.9.2 HOW TO UNFASTEN SEAT BELT..............................................................................................2-34
2.9.3 SEAT BELT REMINDER ............................................................................................................2-34
2.10 HANDLING OF OPERATOR'S SEAT ..............................................................................................2-35
2.10.1 WEIGHT ADJUSTMENT..........................................................................................................2-35
2.10.2 FORE/AFT ADJUSTMENT.......................................................................................................2-35
2.10.3 HEIGHT ADJUSTMENT OF WRIST REST................................................................................2-36
2.11 HANDLING PARTS INSIDE CAB....................................................................................................2-37
2.11.1 CAB DOOR LOCK...................................................................................................................2-37
2.11.2 OPENING DOOR FROM INSIDE OF CAB ................................................................................2-37
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

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［CONTENTS］
2.11.3 OPENING/CLOSING FRONT WINDOW (UPPER).....................................................................2-38
2.11.4 REMOVING FRONT WINDOW (LOWER) ................................................................................. 2-39
2.11.5 OPENING/CLOSING WINDOW ON RIGHT SIDE ......................................................................2-39
2.11.6 ROOM LAMP ..........................................................................................................................2-40
2.12 EMERGENCY ESCAPE FROM OPERATOR'S STATION .................................................................2-41
2.13 OTHER ACCESSORIES................................................................................................................2-42
2.13.1 TOOLS...................................................................................................................................2-42
2.13.2 GREASE GUN HOLDER .........................................................................................................2-42
2.13.3 GUARD/SIDE DOOR (WITH LOCK) .........................................................................................2-42
2.14 ADJUSTING MIRROR ...................................................................................................................2-44
3. MACHINE OPERATION
3.1 DAILY MAINTENANCE CHECKS.......................................................................................................3-3
3.1.1 LOCK LEVER .............................................................................................................................3-3
3.2 CHECK BEFORE STARTING ENGINE...............................................................................................3-5
3.2.1 CHECKING COOLANT LEVEL AND REFILLING ..........................................................................3-5
3.2.2 CHECKING ENGINE OIL LEVEL OF ENGINE OIL PAN AND REFILLING.......................................3-6
3.2.3 CHECKING FUEL LEVEL AND REFUELING ................................................................................3-8
3.2.4 CHECKING FUEL LEAKAGE.......................................................................................................3-9
3.2.5 DRAINING WATER SEPARATOR ................................................................................................3-9
3.2.6 CHECKING OIL LEVEL OF HYDRAULIC OIL TANK ....................................................................3-10
3.2.7 CHECKING FAN BELT .............................................................................................................. 3-11
3.2.8 CHECKING RADIATOR, OIL COOLER AND FILTER...................................................................3-12
3.2.9 ADJUSTMENT OF OPERATOR'S SEAT.....................................................................................3-12
3.2.10 CHECKING MULTI-DISPLAY ...................................................................................................3-13
3.2.11 CHECKING WORKING LIGHT .................................................................................................3-13
3.2.12 CHECKING OF AIR CLEANER INLET ...................................................................................... 3-13
3.3 STARTING ENGINE........................................................................................................................3-14
3.3.1 START-UP UNDER NORMAL TEMPERATURE CONDITIONS.....................................................3-14
3.3.2 START UP IN COLD CONDITIONS............................................................................................3-15
3.3.3 USING JUMPER CABLES.........................................................................................................3-16
3.4 STOPPING MACHINE ENGINE .......................................................................................................3-18
3.5 CHECK AFTER STARTING ENGINE................................................................................................3-19
3.5.1 CHECK OF PILOT CONTROL LOCK LEVER..............................................................................3-19
3.5.2 CHECK OF ENGINE AND MULTI-DISPLAY OPERATION............................................................3-19
3.6 WARMING-UP ................................................................................................................................3-20
3.6.1 ENGINE WARMING-UP ............................................................................................................3-20
3.6.2 WARMING-UP HYDRAULIC OIL................................................................................................3-21
3.7 WORK MODE SELECT SWITCH .....................................................................................................3-22
3.8 MACHINE OPERATION ..................................................................................................................3-23
3.8.1 PRECAUTIONS OF MACHINE OPERATION ..............................................................................3-23
3.8.2 TRAVEL PROCEDURES...........................................................................................................3-24
3.8.3 TRAVEL SPEED SELECT SWITCH ...........................................................................................3-26
3.8.4 MACHINE OPERATION IN WATER OR ON SOFT GROUND.......................................................3-27
3.8.5 GETTING OUT OF SOFT GROUND ..........................................................................................3-28
3.8.6 SWING AND ATTACHMENT/EQUIPMENT OPERATIONS........................................................... 3-29
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

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［CONTENTS］
3.9 WORK PROCEDURES OF MACHINE..............................................................................................3-31
3.9.1 DIGGING WORK ......................................................................................................................3-31
3.9.2 LOADING WORK......................................................................................................................3-31
3.9.3 GROUND LEVELING WORK.....................................................................................................3-32
3.9.4 SIDE DITCH DIGGING WORK...................................................................................................3-32
3.9.5 WORK IN NARROW PLACE......................................................................................................3-33
3.10 ALWAYS PARK MACHINE PROPERLY ..........................................................................................3-34
3.10.1 PARKING MACHINE ON SLOPE .............................................................................................3-34
3.11 HANDLING OF RUBBER CRAWLER SHOES .................................................................................3-35
3.11.1 WARRANTY ON RUBBER CRAWLER SHOES ......................................................................... 3-35
3.11.2 PROHIBITIONS ON USE OF RUBBER CRAWLER SHOES.......................................................3-35
3.11.3 PRECAUTIONS FOR USE OF RUBBER CRAWLER SHOES.....................................................3-37
3.12 INSPECTION AND CHECK AFTER OPERATION............................................................................3-39
3.13 MACHINE OPERATION IN ADVERSE CONDITIONS ......................................................................3-40
3.13.1 OPERATION IN COLD CONDITION.........................................................................................3-40
3.13.2 OPERATION AT SEASHORE...................................................................................................3-41
3.13.3 OPERATION IN SANDY AND DUSTY AREAS...........................................................................3-41
3.14 PRECAUTIONS FOR LONG-TERM STORAGE ..............................................................................3-42
3.14.1 WASHING MACHINE ..............................................................................................................3-42
3.14.2 REFILLING OIL/GREASING ....................................................................................................3-42
3.14.3 BATTERY ...............................................................................................................................3-42
3.14.4 COOLANT ..............................................................................................................................3-42
3.14.5 PREVENTION OF DUST AND MOISTURE ...............................................................................3-43
3.14.6 PERIODICAL LUBRICATING OPERATION (DURING STORAGE) .............................................3-43
3.14.7 TREATMENT AFTER LONG-TERM STORAGE.........................................................................3-43
4. INSPECTION AND MAINTENANCE
4.1 GENERAL ........................................................................................................................................4-3
4.2 INSPECTING AND MAINTAINING MACHINE .....................................................................................4-4
4.2.1 PERIODIC INSPECTION AND MAINTENANCE............................................................................4-4
4.2.2 PRECAUTIONS OF INSPECTION AND MAINTENANCE ..............................................................4-4
4.2.3 LOCK LEVER .............................................................................................................................4-5
4.2.4 GREASING TABLE LABEL ..........................................................................................................4-6
4.3 DIESEL PARTICULATE FILTER (DPF) ...............................................................................................4-7
4.3.1 ABOUT DPF ...............................................................................................................................4-7
4.3.2 ABOUT AUTOMATIC REGENERATION .......................................................................................4-8
4.3.3 ABOUT MANUAL REGENERATION.............................................................................................4-9
4.3.4 INSPECTION AND MAINTENANCE...........................................................................................4-10
4.3.5 PRECAUTIONS OF USING DPF................................................................................................4-10
4.4 FAILURE OF NOx CONTROL SYSTEM............................................................................................ 4-11
4.4.1 EMERGENCY EVACUATION MODE..........................................................................................4-13
4.5 LUBRICANT, FUEL & COOLANT SPECIFICATIONS .........................................................................4-14
4.6 ABOUT USE OF BIO-OIL (BIODEGRADABLE HYDRAULIC OIL)....................................................... 4-16
4.6.1 GREASE AND OIL FOR USE ....................................................................................................4-16
4.6.2 PRECAUTIONS FOR BIO-OIL ...................................................................................................4-16
4.6.3 REPLACEMENT INTERVAL OF BIO-OIL....................................................................................4-16
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

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［CONTENTS］
4.6.4 FLUSHING PROCEDURES OF BIO-OIL ....................................................................................4-16
4.7 MAINTENANCE PARTS ..................................................................................................................4-17
4.8 ACCESSORY TOOLS .....................................................................................................................4-18
4.9 TIGHTENING TORQUES FOR CAPSCREWS AND NUTS ................................................................4-19
4.10 TIGHTENING TORQUES FOR JOINTS & HYDRAULIC HOSES ......................................................4-21
4.11 INSPECTION AND MAINTENANCE CHART...................................................................................4-23
4.12 MAINTENANCE WHEN REQUIRED...............................................................................................4-27
4.12.1 CHECKING AND REPLACING WIPER BLADES.......................................................................4-27
4.12.2 WASHER FLUID INSPECTION................................................................................................4-27
4.12.3 BLEEDING AIR FROM FUEL PIPING.......................................................................................4-28
4.12.4 CHECKING RUBBER CRAWLER SHOES ................................................................................4-29
4.12.5 REPLACING RUBBER CRAWLER SHOES .............................................................................. 4-31
4.12.6 REPLACING BUCKET.............................................................................................................4-33
4.12.7 REPLACING TOOTH POINT AND SIDE CUTTER.....................................................................4-35
4.13 8 HOUR (DAILY) INSPECTION & MAINTENANCE PROCEDURES..................................................4-38
4.13.1 GREASING ATTACHMENT/EQUIPMENT................................................................................. 4-38
4.14 50 HOUR INSPECTION & MAINTENANCE PROCEDURES ............................................................4-40
4.14.1 DRAINING WATER AND SEDIMENT IN FUEL TANK.................................................................4-40
4.14.2 ADJUSTING CRAWLER TENSION ..........................................................................................4-41
4.14.3 GREASING SWING PINION ....................................................................................................4-44
4.15 100 HOUR INSPECTION & MAINTENANCE PROCEDURES ..........................................................4-45
4.15.1 CHECKING OIL LEVEL OF TRAVEL REDUCTION UNIT...........................................................4-45
4.15.2 CHECKING INTAKE SYSTEM RUBBER HOSE ........................................................................4-46
4.16 250 HOUR (3-MONTH) INSPECTION & MAINTENANCE PROCEDURES ........................................4-47
4.16.1 ADJUSTING FAN BELT ...........................................................................................................4-47
4.16.2 CHECKING RADIATOR HOSES ..............................................................................................4-48
4.16.3 INSPECTING, CLEANING, OR REPLACING AIR CLEANER ELEMENT.....................................4-50
4.16.4 CLEANING OR REPLACING RADIATOR CAP..........................................................................4-52
4.16.5 CLEANING RADIATOR, OIL COOLER CORE AND FILTER .......................................................4-53
4.16.6 GREASING DOZER ................................................................................................................4-54
4.16.7 GREASING SWING BEARING.................................................................................................4-54
4.16.8 INSPECTING AND MAINTAINING BATTERY............................................................................4-55
4.17 500 HOUR (6-MONTH) INSPECTION & MAINTENANCE PROCEDURES ........................................4-57
4.17.1 REPLACING ENGINE OIL AND ENGINE OIL FILTER ...............................................................4-57
4.17.2 REPLACING WATER SEPARATOR .........................................................................................4-59
4.17.3 REPLACING FUEL FILTER .....................................................................................................4-60
4.17.4 CHECKING SWING BEARING MOUNTING BOLT FOR LOOSENESS .......................................4-61
4.17.5 CLEANING FUEL TANK CAP AND STRAINER .........................................................................4-61
4.17.6 LUBRICATING PUSH ROD OF CONTROL LEVER ...................................................................4-62
4.18 1000 HOUR (12-MONTH) INSPECTION & MAINTENANCE PROCEDURES ....................................4-63
4.18.1 REPLACING RETURN FILTER ................................................................................................4-63
4.18.2 REPLACING AIR BREATHER ELEMENT .................................................................................4-65
4.18.3 CHECKING ENGINE MOUNTING BRACKET FOR TIGHTENING CONDITION...........................4-66
4.18.4 CHECKING BATTERY VOLTAGE.............................................................................................4-67
4.19 2000 HOUR INSPECTION & MAINTENANCE PROCEDURES ........................................................4-68
4.19.1 REPLACING COOLANT..........................................................................................................4-68
4.19.2 REPLACING OIL IN TRAVEL REDUCTION UNITS ...................................................................4-70
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

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［CONTENTS］
4.19.3 CLEANING PILOT LINE FILTER ..............................................................................................4-71
4.20 5000 HOUR INSPECTION & MAINTENANCE PROCEDURES ........................................................4-72
4.20.1 REPLACING HYDRAULIC OIL AND CLEANING SUCTION STRAINER .....................................4-72
4.21 MAINTENANCE OF MACHINES OPERATED UNDER SEVERE CONDITIONS ................................4-75
4.21.1 RECOMMENDED MAINTENANCE FOR MACHINES OPERATED UNDER SEVERE
CONDITIONS ................................................................................................................................4-75
4.21.2 STARTING AND STOPPING ENGINE ......................................................................................4-75
4.21.3 HOW TO USE MACHINES ......................................................................................................4-76
5. TRANSPORTATION
5.1 TRANSPORTATION..........................................................................................................................5-3
5.1.1 STRICTLY OBSERVE TRANSPORTATION RELATED LAWS AND REGULATIONS........................5-3
5.2 LOADING/UNLOADING THE MACHINE.............................................................................................5-4
5.2.1 LOADING ...................................................................................................................................5-5
5.2.2 FIXING THE MACHINE ...............................................................................................................5-6
5.3 LIFTING MACHINE ...........................................................................................................................5-7
5.3.1 PREPARATION...........................................................................................................................5-7
5.3.2 SELECTION OF LIFTING TOOLS................................................................................................5-7
5.3.3 INSTALLING LIFTING TOOLS .....................................................................................................5-8
5.3.4 LIFTING MACHINE .....................................................................................................................5-8
5.4 TOWING THE MACHINE...................................................................................................................5-9
5.4.1 TOWING METHOD OF THE MACHINE........................................................................................5-9
6. SPECIFICATION
6.1 GENERAL SPECIFICATIONS............................................................................................................6-3
6.1.1 CANOPY....................................................................................................................................6-3
6.1.2 CAB ...........................................................................................................................................6-5
6.2 WORKING RANGES.........................................................................................................................6-7
6.2.1 BACKHOE ATTACHMENT...........................................................................................................6-7
6.3 BUCKET TYPE .................................................................................................................................6-9
7. OPTIONAL EQUIPMENT
7.1 OPERATION OF HYDRAULIC NIBBLER (CRUSHER) AND BREAKER ................................................7-3
7.1.1 SELECTION OF NIBBLER (CRUSHER) AND BREAKER ..............................................................7-3
7.1.2 INSTALLATION OF NIBBLER (CRUSHER) OR BREAKER ............................................................7-3
7.1.3 POTENTIAL HAZARDS WHEN OPERATING ...............................................................................7-3
7.1.4 PRECAUTIONS IN USE OF BREAKER........................................................................................7-5
7.1.5 PRECAUTIONS IN USE OF NIBBLER (CRUSHER) ......................................................................7-9
7.2 SWITCHING SELECTOR VALVE .....................................................................................................7-14
7.3 FLOW RATE ADJUSTMENT............................................................................................................7-15
7.4 OPERATION...................................................................................................................................7-16
7.4.1 PEDAL LOCK DEVICE..............................................................................................................7-16
7.4.2 PEDAL OPERATIONS FOR HYDRAULIC BREAKER AND NIBBLER (CRUSHER) OPENING/
CLOSING ......................................................................................................................................7-17
7.5 CONTROL OF PROPORTIONAL HAND CONTROL..........................................................................7-18
7.5.1 NIBBLER (CRUSHER) OPERATION..........................................................................................7-18
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

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［CONTENTS］
7.5.2 BREAKER OPERATION............................................................................................................7-19
7.5.3 ROTARY OPERATION ..............................................................................................................7-20
7.6 PERIODIC INSPECTION AND MAINTENANCE OF NIBBLER (CRUSHER) AND BREAKER ...............7-21
7.6.1 PERIODIC INSPECTION AND MAINTENANCE CHART OF NIBBLER (CRUSHER) AND
BREAKER .....................................................................................................................................7-21
7.7 PRECAUTIONS FROM BREAKER MANUFACTURERS....................................................................7-22
7.8 AIR CONDITIONER ........................................................................................................................7-23
7.8.1 GRILLE (AIR OUTLET)..............................................................................................................7-23
7.8.2 AIR CONDITIONER CONTROL PANEL......................................................................................7-24
7.8.3 AIR CONDITIONER OPERATION PANEL...................................................................................7-25
7.8.4 HOW TO USE AIR CONDITIONER ............................................................................................7-27
7.8.5 SELF-DIAGNOSIS FUNCTION IN DISPLAY MONITOR...............................................................7-28
7.8.6 HANDLING AT IN-SEASON/OFF-SEASON ................................................................................7-28
7.8.7 INSPECTION & MAINTENANCE CHART ...................................................................................7-29
7.8.8 INSPECTION AND ADJUSTMENT OF AIR CONDITIONING COMPRESSOR BELT......................7-30
7.8.9 CLEANING OR REPLACING AIR CONDITIONER FILTERS ........................................................7-31
7.8.10 CHECKING AIR CONDITIONER REFRIGERANT ..................................................................... 7-33
7.9 HANDLING OF RADIO TUNER........................................................................................................7-35
7.9.1 NAME OF EACH PART .............................................................................................................7-35
7.9.2 ON-AIR (NORMAL CONDITION) ...............................................................................................7-36
7.9.3 SWITCHING SOURCE..............................................................................................................7-37
7.9.4 FM/AM .....................................................................................................................................7-38
7.9.5 USB PORT/EXTERNAL INPUT TERMINAL (AUX) ......................................................................7-43
7.9.6 BLUETOOTH AUDIO FUNCTION, AND EXTERNAL INPUT TERMINAL ......................................7-44
7.9.7 PAIRING (REGISTRATION OF DEVICES)..................................................................................7-45
7.9.8 TELEPHONE FUNCTION..........................................................................................................7-47
7.9.9 FILE PLAYING FUNCTION........................................................................................................7-49
7.9.10 VOLUME CONTROL...............................................................................................................7-50
7.9.11 SOUND ADJUSTMENT ...........................................................................................................7-51
7.9.12 CLOCK ADJUSTMENT ...........................................................................................................7-55
7.10 QUICK HITCH...............................................................................................................................7-56
7.10.1 PROHIBITED WORKS ............................................................................................................7-56
7.10.2 QUICK HITCH OPERATION SWITCH ......................................................................................7-57
7.10.3 PRECAUTIONS FOR USE ......................................................................................................7-58
7.11 MULTI-CONTROL VALVE (ISO & BHL PATTERN) ...........................................................................7-59
8. SPECIAL PROCEDURES
8.1 SPECIAL PROCEDURES AT ENGINE FAILURE ................................................................................8-3
8.2 LOWERING ATTACHMENT OF DISABLED MACHINE ........................................................................8-4
8.3 RELEASING TRAVEL MOTOR BRAKES............................................................................................8-5
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

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［CONTENTS］
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

0-1
［IMPORTANT INFORMATION］
IMPORTANT INFORMATION
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

0-2
［IMPORTANT INFORMATION］
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

0-3
［IMPORTANT INFORMATION］
PREFACE
• Read, understand and follow the safety messages and instructions in this manual and the safety messages on
the machine. If these safety messages are not followed, serious injury or death could occur.
• Always be aware of your surroundings when operating this machine and understand the capabilities of this
machine and the attachment/equipment.
• Always use caution to safely operate this machine.
Use of this machine and this manual
• Improper operation, inspection, maintenance or repair of this machine may cause serious injury, death or
damage to the machine.
• If a license or other special qualification is required to operate a hydraulic excavator in the country where this
machine will be operated, all operators of this machine must meet those requirements and have a valid (not
expired) license or qualification.
• Do not operate this machine for the first time or perform any inspection, maintenance or repair on this machine,
until you have carefully read and understand the operation, inspection, maintenance, and repair information in
this manual.
– Operation related activities include setting up, rectifying malfunctions and the disposal of materials.
– Maintenance related activities include lubrication, maintenance, inspection and repair work.
– Transportation related activities include loading and unloading the machine.
• For machines equipped with KOBELCO approved attachments, read the section related to the specialized
attachments in this manual and any additional manuals for the specialized attachment. Use of the unapproved
attachment/equipment voids KOBELCO’s liability for the machine.
• Do not remove this manual from this machine.
• If this manual is lost, damaged or unreadable, order a replacement from your KOBELCO authorized dealer.
• This manual is a part of this machine and should be transferred with the machine to new users or owners.
• Always use genuine KOBELCO parts. Do not use aftermarket or non-KOBELCO parts on your machine.
• Manufacturers cannot anticipate every possible scenario and potential hazard that may arise during operation,
inspection and maintenance activities. Therefore, the warnings in this manual and on the product may not
communicate all of the possible safety precautions for your situation. When performing any operation,
inspection, maintenance and repair activities that are not contained in this manual, proceed at your own risk and
do not perform any unsafe acts. You should also ensure the machine will not be damaged or create an unsafe
condition by your actions. Always follow the safety procedures in this manual and for your worksite. Never
perform any task or operation prohibited by this manual.
• If a tool, procedure, work method or operating technique not specifically recommended by KOBELCO is used,
you must evaluate that it is safe for yourself and others to proceed. You should also ensure the machine will not
be damaged or create an unsafe condition by the operation, maintenance and/or repair procedures you choose.
Never perform any task or operation prohibited by this manual.
• The information, specification, and illustrations in this manual are based on information available at the time it
was written.KOBELCO is committed to continuous improvement of the safety systems and features of its
products, and may change the specifications, torques, pressures, measurements, adjustments, illustrations, and
other content at anytime without any obligation to notify the users/owners of these changes. Your KOBELCO
authorized dealer will have the most current information available.
• Should there be questions, errors, omissions or other issues that need to be communicated to the manufacturer,
contact your KOBELCO authorized dealer.
• KOBELCO provides machines produced in accordance with regulations and standards of a country in which the
machine is sold to the first owner. If you have a machine purchased in a foreign country or from a person or
company in another country, your machine may lack safety devices or machine components or not meet a safety
standard required in your country. Please contact your KOBELCO authorized dealer to ask whether your
machine's specifications meet the regulations and the standards in your country.
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

0-4
［IMPORTANT INFORMATION］
The copyright of this manual belongs to KOBELCO CONSTRUCTION MACHINERY CO., LTD. Copy, reproduction,
distribution, and delivery (including these actions on the Internet) of all or part of this manual are prohibited without permission
of KOBELCO CONSTRUCTION MACHINERY CO., LTD.
STORE OPERATION & MAINTENANCE MANUALS ON THE MACHINE
Always store all manuals for this machine and any
attachments, including this manual and the related
manuals, in the pocket located at the cover of the seat
stand. Check the manuals are in this location as a part of
your pre-start inspection. If the manuals are not present
during your pre-start inspection, inform your supervisor
and order replacement manuals from your KOBELCO
authorized dealer.
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

0-5
［IMPORTANT INFORMATION］
SAFETY INFORMATION IN MESSAGES OR LABELS IN THIS
MANUAL AND ON THE MACHINE
“Many accidents are the result of not following basic safety precautions and could have been avoided by
recognizing potentially hazardous situations.
Proper risk assessment can prevent many accidents from occurring. During operation, always pay attention to the
potential hazards near the machine and at your worksite.
• Improper operation, inspection, maintenance and repair could cause serious injury, death or property damage.
Before operating, inspecting and maintaining this machine, carefully read and understand this manual, the
related manuals, and any attachment manuals that may be provided to you.
• Only allow trained and experienced personnel to operate, to inspect and to maintain this machine.
These individuals must also comply with all applicable employment, industry, and governmental rules,
standards, and regulations.
This safety alert symbol identifies important safety messages in this manual.
When you see this symbol, be alert, your safety is involved, carefully read the message
that follows, and inform other operators.
Many safety messages in this manual or on the labels on this machine contain signal words. Signal words are used
to identify safety messages and property damage messages and designate a level of hazard seriousness. Many of
these safety messages may also contain avoidance information to hazardous events.
The three signal words are DANGER, WARNING and CAUTION. Each alerts the viewer to the existence and
relative seriousness of a hazard. They are reserved for personal injury hazards.
Safety signs identified by DANGER shall be used sparingly and only for those situations presenting the most
serious hazards. Hazards identified by WARNING present a lesser degree of risk of injury or death than those
identified by DANGER.
DANGER indicates a hazard with a high level of risk which, if not avoided, will result in death or
serious injury.
WARNING indicates a hazard with a medium level of risk which, if not avoided, could result in
death or serious injury.
CAUTION indicates a hazard with a low level of risk which, if not avoided, could result in minor or
moderate injury.
Other than the above-mentioned signal words, the following words identify important information which must be
kept for the protection of the machine and may be helpful for the operator.
Notice indicates information considered important, but not hazard related .
(e.g., messages related to property damage)
Note indicates information that may be helpful for the operator.
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

0-6
［IMPORTANT INFORMATION］
SAFETY LABELS
Safety labels are affixed to machine to alert the operator and surrounding personnel of hazardous situations during
operation, inspection or maintenance.
There are two types of "safety labels" on this machine. One is "SAFETY LABEL INCLUDING SIGNAL WORDS"
and the other is "PICTORIAL ONLY SAFETY LABELS".
Example of the safety label including signal words
Example of a pictorial only safety label
ZL11M02708
The pictorial only safety label is used to alert the
operator and surrounding personnel of potentially
hazardous situations.
For pictorial only safety label, the hazard pictorial is in
the upper or left box, and the avoidance information is in
the lower or right box.
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

0-7
［IMPORTANT INFORMATION］
SUMMARY OF THE MACHINE
APPLICABLE WORKS
Use this machine in the following applications:
• Digging
• Trenching
• Loading
• Leveling
• Demolishing
• Breaker work
Never use the machine for any purpose other than the above applications.
If you use the attachment which KOBELCO did not supply, read, understand and follow the safety messages and
instructions in the applicable manual described by the attachment manufacturer.
For details of work procedures, please refer to "MACHINE OPERATION" and "OPTIONAL EQUIPMENT".
OPERATING CONDITION
This machine is intended to be operated in the ambient temperature of -20 degrees C to 40 degrees C (-4 degrees
F to 104 degrees F) with the well-maintained condition.
Outside this temperature range, sufficient machine performance may not be obtained.
FRONT, REAR, RIGHT & LEFT OF THE MACHINE
Right-hand
side
Travel moter
Left-hand
side
Rear
Front
In this manual, front/rear and left/right are determined by
looking the forward direction from the operator's seat
with the travel motors at the rear side.
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

0-8
［IMPORTANT INFORMATION］
BREAK-IN OPERATION
Prior to shipment, this machine was inspected and adjusted by KOBELCO. Future performance and service life of
this machine depends on how the machine is operated during the break-in period.
Hour Meter Load Status
Less than 10 hours About 60%
Less than 100 hours About 80%
100 hours and more Full load
During the break-in period
• Always sufficiently warm-up the engine and the hydraulic oil.
• Do not operate with loads that exceed the recommended load status for each phase shown in the table or
operate at high speeds.
• Do not perform a sudden start, sudden acceleration, or other sudden changes in engine speed.
• Avoid unnecessary sudden stops or sudden changes in driving direction.
• Do not operate the engine at high speed for extended periods of time.
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

0-9
［IMPORTANT INFORMATION］
QUALIFICATION FOR OPERATING THE MACHINE
If a license or other special qualification is required to operate a hydraulic excavator in the country where this
machine will be operated, all operators of this machine must meet those requirements and have a valid (not
expired) license or qualification.
Instruct that only skilled trained operators may operate the machine. The operator shall:
• Receive training in the proper operation of this machine;
• Understand the capabilities and limitations of this machine;
• Become familiar with the construction of this machine and the hazards involved based on training and
experience;
• Confirm that the machine is properly maintained and is in good condition;
Read and properly understand the warnings, instructions, and operating procedures in this manual.
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]

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［IMPORTANT INFORMATION］
CAB WITH ROPS (ROLL-OVER PROTECTIVE STRUCTURE)/
FALLING OBJECTS PROTECTIVE STRUCTURE
• The machine cab is equipped with ROPS (roll-over
protective structure). The ROPS, fitting supports, and
fastening elements on the machine are integral parts
of the structure.
• When the machine is used at the work site where
falling objects may hit the cab, always have the top
guard installed and inspect them on a periodic basis
to ensure the top guard have not been damaged. The
impact from objects striking the top of the cab could
result in a potential crush hazard and result in serious
injury or death.
• Any damage to the protective structures or the cab
caused by collision, corrosion or fire are required to
be inspected carefully by appropriate personnel. All
damaged parts must be replaced with genuine
KOBELCO parts to ensure the protective structures
will be restored to their original specifications. Before
making any changes to the cab, replacing the whole
structure, or replacing the ROPS or top guard, contact
your KOBELCO authorized dealer.
• To prevent serious injury or death, do not attempt to
weld, to drill, to straighten or to repair the protective
structures. Never attach any devices to lift the cab on
the protective structure. Any type of modification may
affect the structural integrity of the protective system
and result in a complete loss of protective capability.
Consult your KOBELCO authorized dealer to
determine this structure's limitations without voiding
its certification. Failures to contact your KOBELCO
authorized dealer may void your warranty.
• Pay attention to the operating mass. If the operating mass exceeds MAX. MASS (maximum operating mass)
described on ROPS CERTIFICATION with the special attachment or others installed, it will cause insufficient
function, resulting in serious injury or death, should the machine tips/rolls over.
Copyright©2022 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2PS00041ZE02] [0325CsCshWbYs]