Hitachi Hydraulic Excavator ZX490LCH-7 Operation Technical PN:TOJAQ51 – PDF DOWNLOAD

Description

Hitachi Hydraulic Excavator ZX490LCH-7 Operation Technical PN:TOJAQ51 – PDF DOWNLOAD

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Hitachi Hydraulic Excavator ZX490LCH-7 Operation Technical PN:TOJAQ51 – PDF DOWNLOAD

Language :English
Pages :1082
Downloadable : Yes
File Type : PDF

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DESCRIPRION:

Hitachi Hydraulic Excavator ZX490LCH-7 Operation Technical PN:TOJAQ51 – PDF DOWNLOAD

Service Manual consists of the following separate Part No.
Technical Manual (Operational Principle) : Vol. No.TOJAQ51-EN
Technical Manual (Troubleshooting) : Vol. No.TTJAQ51-EN
Workshop Manual : Vol. No.WJAQ51-EN
Engine Manual : Vol. No.ETJAQ51-EN, EWJAQ51-EN

To The Reader
This manual is written for an experienced technician to provide technical information needed to maintain and repair this machine.
The machine specification and description according to destination may be explained on this manual.
●Be sure to thoroughly read this manual for correct product information and service procedures.
●If you have any questions or comments, at if you found any errors regarding the contents of this manual, please contact using “Service Manual Revision Request Form” at the end of this manual. (Note: Do not tear off the form. Copy this form for usage.)
•Service Material Development Center Hitach Construction Machinery Co., Ltd.
•TEL: 81-29-832-9673
•FAX: 81-29-831-1162
•All information, illustrations and specifications in this manual are based on the latest product information available at the time of publication. The right is reserved to make changes at any time without notice.
Additional References
Please refer to the other materials (operator’s manual, parts catalog, engine technical material and Hitachi training material etc.) in addition to this manual.
Manual Composition
This manual consists the Technical Manual, the Workshop Manual and the Engine Manual.
●Information included in the Technical Manual: Technical information needed for redelivery and delivery
•Operation and activation of all devices and systems, operational performance tests, and troubleshooting procedures.
●Information included in the Workshop Manual: Technical information needed for maintenance and repair of the machine
•Tools and devices needed for maintenance and repair, maintenance standards, and removal / installation and assemble / disassemble procedures
●Information included in the Engine Manual: Technical information needed for redelivery and delivery and maintenance and repair of the machine
•Operation and activation of all devices and systems, troubleshooting and assemble / disassemble procedures

TABLE OF CONTENTS:

Hitachi Hydraulic Excavator ZX490LCH-7 Operation Technical PN:TOJAQ51 – PDF DOWNLOAD

Service Manual consists of the following separate Part No.
Technical Manual (Operational Principle) : Vol. No.TOJAQ51-EN
Technical Manual (Troubleshooting) : Vol. No.TTJAQ51-EN
Workshop Manual : Vol. No.WJAQ51-EN
Engine Manual : Vol. No.ETJAQ51-EN, EWJAQ51-EN

TOJAQ51-EN-00 1
INTRODUCTION 0
To The Reader 0
Additional References 0
Manual Composition 0
Page Number 0
Trademark 0
Safety Alert Symbol and Headline Notations 0
Units Used 0
SYMBOL AND ABBREVIATION 0
Symbol and Abbreviation 0
CONTRASTING LIST OF PART NAME 0
Contrasting List of Part Name between Technical Manual and Parts Catalog 0
SECTION AND GROUP CONTENTS 0
CONTENTS 0
GENERAL 0
Specifications 0
Specifications ZX490LCH-7 0
Working Ranges ZX490LCH-7 0
Component Layout 0
Main Component (Upperstructure) 0
Main Component (Undercarriage) 0
Main Component (Front Attachment) 0
Electrical System (Overview) 0
Electrical System (Rear Tray) 0
Electrical System (Switches) 0
Electrical System (Utility Space) 0
Electrical System (Around Battery) 0
Engine Oil Monitoring Sensor 0
Hydraulic Oil Monitoring Sensor 0
Engine 0
Aftertreatment Device 0
Pump Device 0
Around Pump Device 0
Control Valve 0
Signal Control Valve 0
Pilot Check Valve 0
Swing Device 0
Travel Device 0
4-Spool Solenoid Valve Unit (Control Valve Side) 0
4-Spool Solenoid Valve Unit (Hydraulic Oil Tank Side) 0
Expansion Tank 0
Air Cleaner 0
DEF Tank 0
DEF Supply Module 0
Coolant Control Valve 0
Around Radiator 0
Shockless Valve 0
Fan Valve 0
Layout of Attachment Specification Parts 0
Around Control Valve 0
Control Valve Lower Side 0
Boom Upper Area 0
Arm Upper Area 0
Distribution Valve (Upperstructure) 0
Component Specifications 0
Specifications of Engine 0
Specifications of Engine Accessories 0
Specifications of Hydraulic Component 0
Specifications of Electrical Component 0
SYSTEM 596
Controller 604
Outline of Controller 0
CAN Circuit 0
Control System 678
Outline of Control System 0
Engine Control 0
Engine Control System Layout 0
Engine Protection Control 0
Engine Control Dial Control 0
ECO Control 0
Power Mode (ECO/PWR/HP Mode) Switch Control 0
ECO/PWR Mode Travel Speed Increase Control 0
Auto-Idle Control 0
Radiator Coolant Temperature Auto-Warming Up Control 0
Engine Speed Slow Down Control 0
One-Touch Idle Control (Option) 0
Pump Control 0
Pump Control System Layout 0
Pump Flow Rate Control 0
Engine Control Dial Output Control 0
Speed Sensing Control 0
Output Power Control 0
ECO/PWR Mode Control 0
Relief Flow Rate Decrease Control 0
Swing High Pressure Power Decrease Control 0
Overheat Prevention Control 0
Attachment Operation Pump Control (Option) 0
Fan Pump Flow Rate Control (Air Conditioner Switch: OFF) 0
Fan Pump Flow Rate Control (Air Conditioner Switch: ON) 0
Pump and Valve Learning Control 0
Pump Torque Restriction Control 0
Valve Control (Standard) 0
Valve Control (Standard) System Layout 0
Pressure Rising Selection Control When Traveling 0
Power Digging Control 0
Auto-Power Lift Control 0
Travel Motor Displacement Angle Control 0
Boom Mode Selector Control 0
Swing Flow Rate Control 0
Arm 2 Flow Rate Control 0
Bucket Flow Combiner Control 0
Aftertreatment Device Manual Regeneration Control 0
Aftertreatment Device Auto Regeneration Control 0
Engine Protection Control at Low Temperature 0
Radiator, Oil Cooler Fan Reverse Rotation Control 0
Arm Regenerative Cut Control 0
Valve Control (Option) 0
Valve Control (Option) System Layout 0
Auxiliary Flow Combiner Control 0
Breaker Circuit Connection Control 0
Auxiliary Overload Relief Valve Pressure Decrease Control 0
Other Control 0
Work Mode Control 0
Auto Shut-Down Control 0
Hydraulic Oil Overheat Alarm Control 0
Engine Oil, Coolant Level Check Control 0
Auto-Lubrication Control (Option) 0
Breaker Alarm Control (Option) 0
Travel Alarm Control (Option) 0
Overload Alarm Control (Option) 0
Engine System 734
Outline of ECM System 0
Fuel Injection Control 0
Fuel Injection Amount Control 0
Fuel Injection Timing Control 0
Fuel Injection Rate Control 0
Fuel Injection Pressure Control 0
Fuel Injection Amount Correction Control 0
EGR Control 0
Preheating Control 0
Variable Turbocharger Control 0
Alarm Control 0
Urea SCR System 0
DEF Injection Control 0
Start-Up Control 0
DEF Defrosting Control 0
DEF Thermal Control 0
After-Run Control 0
Engine Output Restriction Control (INDUCEMENT) 0
Insufficient DEF Level 0
Malfunction of Urea SCR System/Malfunction of EGR System 0
Outline of Aftertreatment Device 0
Operation of Aftertreatment Device 0
Aftertreatment Device Regeneration Control 0
Hydraulic System 738
Outline of Hydraulic System 932
Pilot Circuit of Hydraulic System 0
Operation Control Circuit 0
Pump Control Circuit (Refer to COMPONENT OPERATION/Pump Device) 0
Aftertreatment Device Regeneration Control Circuit (Refer to SYSTEM/Control System) 0
Bucket Flow Combiner Circuit (Refer to SYSTEM/Control System) 0
Valve Control Circuit (Refer to COMPONENT OPERATION/Control Valve) 0
Travel Motor Displacement Angle Control Circuit (Refer to COMPONENT OPERATION/Travel Device) 0
Swing Parking Brake Release Circuit (Refer to COMPONENT OPERATION/Swing Device) 0
Emergency Boom Lower Circuit (Refer to COMPONENT OPERATION/Others (Upperstructure)) 0
Main Circuit of Hydraulic System 0
Neutral Circuit 0
Flow Combiner Circuit 0
Relief Circuit 0
Combined Operation Circuit 0
Flow Combiner Circuit 0
Swing Flow Rate Control Circuit 0
Arm Regenerative Cut Circuit 0
Arm 1 Flow Rate Control Circuit 0
Arm 2 Flow Rate Control Circuit 0
Bucket Regenerative Cut Circuit 0
Boom Lower Meter-In Cut Control 0
Boom Cylinder Bottom Pressure: High (With the Front Attachment above the Ground) 0
Boom Cylinder Bottom Pressure: Low (With Track Raised off the Ground) 0
Breaker/Crusher Circuit of Hydraulic System (Option) 0
Auxiliary Flow Combiner Circuit 0
Breaker Circuit 0
Auxiliary Overload Relief Valve Pressure Decrease Circuit 0
Radiator and Oil Cooler Fan Reverse Rotation Control Circuit 604
Electrical System 820
Outline of Electrical System 605
Main Circuit of Electrical System 608
Electric Power Circuit (Key Switch: OFF) 608
CAN Circuit 231
Accessory Circuit (Key Switch: ACC) 610
Starting Circuit (Key Switch: START) 612
Charging Circuit (Key Switch: ON) 613
Alternator Operation 613
Regulator Operation 615
Surge Voltage Prevention Circuit 0
Pilot Shut-Off Circuit (Key Switch: ON) 618
Auto Shut-Down Circuit/Automatic Engine Stop Circuit at Low Temperature 618
Engine Stop Circuit 620
Emergency Stop Circuit 621
Monitor Circuit of Electrical System 626
Security Circuit 629
Aerial Angle Circuit 629
Control Lever Automatic Pilot Shut-Off Circuit 631
Seat Belt Reminder Circuit 633
Radio Circuit 632
Air Conditioner Circuit 635
Accessory Circuit 636
Work Light Circuit (Work Light: ON) 639
Work Light Circuit (Work Light, Work Light (Cab Upper), and Boom Light: ON) 642
Wiper Circuit 645
Washer Circuit 649
Cab Light Circuit (Cab Light Switch: Door Interlocking Position (Key Switch: ON)) 652
Cab Light Circuit (Cab Light Switch: ON Position) 656
COMPONENT OPERATION 261
Pump Device 265
Outline of Pump Device 659
Outline of Main Pump 662
Operational Principle of Main Pump 663
Increasing and Decreasing of Main Pump Delivery Flow Rate 663
Outline of Regulator (For Main Pump) 664
Control by Pump Control Solenoid Valve (Minimum Flow Rate) 664
Control by Pump Control Solenoid Valve (Increase of Flow Rate) 665
Control by Pump Control Solenoid Valve (Decrease of Flow Rate) 666
Outline of Pump Control Solenoid Valve 666
Operation of Pump Control Solenoid Valve (When in Neutral) 667
Operation of Pump Control Solenoid Valve (When Excited) 667
Outline of Fan Pump 668
Operational Principle of Fan Pump 669
Increasing and Decreasing of Fan Pump Delivery Flow Rate 669
Outline of Regulator (for Fan Pump) 670
Control by Fan Pump Control Solenoid Valve (Minimum Flow Rate) 671
Control by Fan Pump Control Solenoid Valve (Increase of Flow Rate) 672
Control by Fan Pump Control Solenoid Valve (Decrease of Flow Rate) 673
Outline of Pilot Pump 674
Outline of Pump Delivery Pressure Sensor 675
Outline of Pump Displacement Control Pressure Sensor 675
Swing Device 283
Outline of Swing Device 676
Outline of Swing Reduction Gear 676
Outline of Swing Motor 677
Outline of Swing Parking Brake 677
When Brake is Released of Swing Parking Brake 678
When Brake is Applied of Swing Parking Brake 678
Outline of Valve Unit 679
Operation of Make-Up Valve 681
Outline of Swing Relief Valve 684
Low-Pressure Relief Operation (Shockless Function) of Swing Relief Valve 688
High-Pressure Relief Operation (Overload Prevention) of Swing Relief Valve 690
Control Valve 291
Outline of Control Valve 695
Components in Control Valve 695
Main Circuit of Control Valve 696
Pilot Operation Control Circuit of Control Valve 697
External Pilot Pressure Circuit of Control Valve 697
Operation of Flow Combiner Valve 698
Outline of Main Relief Valve 700
Relief Operation of Main Relief Valve 701
Pressure Increasing Operation of Main Relief Valve 702
Outline of Overload Relief Valve (With Make-Up Function) 704
Relief Operation of Overload Relief Valve 707
Make-Up Operation of Overload Relief Valve 708
Outline of Boom Overload Relief Valve (Low Pressure) 714
Relief Operation of Boom Overload Relief Valve (Low Pressure) 711
Make-Up Operation of Boom Overload Relief Valve (Low Pressure) 717
Operation of Auxiliary Overload Relief Valve Pressure Decrease 719
Make-Up Operation of Auxiliary Overload Relief Valve 722
Outline of Regenerative Valve 724
Operation of Boom Regenerative Valve 725
Outline of Bucket Regenerative Valve 729
Operation When Performing Bucket Regenerative Operation 730
Operation When Performing Bucket Regenerative Cut Operation 731
Operation When Performing Arm Regenerative Operation 732
Operation When Performing Arm Regenerative Cut Operation 732
Outline of Anti-Drift Valve 733
Holding Operation of Anti-Drift Valve 734
Releasing Operation of Anti-Drift Valve 736
Outline of Flow Rate Control Valve 734
Normal Operation of Flow Rate Control Valve 738
Flow Rate Control Operation of Flow Rate Control Valve 740
Outline of Boom Lower Meter-In Cut Valve 726
Operation of Boom Lower Meter-In Cut Valve (With the Track off the Ground) 740
Operation of Boom Lower Meter-In Cut Valve (With the Front Attachment above the Ground) 741
Operation of Auxiliary Flow Combiner Valve (Auxiliary Flow Combiner Valve: OFF) 746
Operation of Auxiliary Flow Combiner Valve (Auxiliary Flow Combiner Valve: ON) 754
Outline of Pump 1 Bypass Shut-Out Valve and Pump 2 Bypass Shut-Out Valve 744
Operation of Pump 1 Bypass Shut-Out Valve 749
Operation of Pump 2 Bypass Shut-Out Valve 751
Pilot Valve 347
Outline of Pilot Valve 753
Outline of Front Attachment/Swing Pilot Valve 751
Outline of Travel Pilot Valve 752
Outline of Auxiliary Pilot Valve 748
Operation of Front Attachment/Swing and Travel Pilot Valves 747
When Front Attachment/Swing and Travel Pilot Valves are in Neutral (Output Curve: A to B) 749
During Metering or Decompressing of Front Attachment/Swing and Travel Pilot Valves (Output Curve: C to D) 744
Full Stroke of Front Attachment/Swing and Travel Pilot Valves (Output Curve: E to F) 752
Operation of Auxiliary Pilot Valve 742
When Auxiliary Pilot Valve are in Neutral (Output Curve: A to B) 743
During Metering or Decompressing of Auxiliary Pilot Valve (Output Curve: C to D) 745
Outline of Shockless Function (Only Travel Pilot Valve) 745
Operation of Shockless Function 748
Travel Device 361
Outline of Travel Device 750
Outline of Travel Reduction Gear 751
Outline of Travel Motor 753
Operation of Travel Motor 754
Outline of Parking Brake 755
Operation of Parking Brake (When Parking Brake is Released) 755
Operation of Parking Brake (When Parking Brake is Applied) 756
Outline of Travel Brake Valve 756
Operation of Counterbalance Valve (During Travel) 757
Operation of Counterbalance Valve (When Descending a Slope) 757
Outline of Travel Relief Valve 758
Operation of Travel Relief Valve (During Relief) 758
Operation of Travel Relief Valve (During Make-Up) 759
Outline of Travel Mode Control 760
Operation of Selecting Travel Mode (Slow Speed) 771
Operation of Selecting Travel Mode (Fast Speed) 772
Signal Control Valve 375
Outline of Signal Control Valve 774
Pilot Valve Side of Pilot Port 776
Control Valve Side of Pilot Port 779
Outline of Shuttle Valve 787
Outline of Shockless Valve 796
Operation of Shockless Valve (During Boom Raise Operation) 797
Operation of Shockless Valve (During Boom Lower Operation or When Stopping Boom Raise Operation (Shock Reducing Operation)) 798
Operation of Flow Combiner Valve Control Spool 799
Operation of Swing Parking Brake Release Spool 801
Operation of Arm Flow Rate Control Valve Control Spool 802
Others (Upperstructure) 385
Outline of Pilot Shut-Off Solenoid Valve 803
Pilot Shut-Off Lever: LOCK Position 804
Pilot Shut-Off Lever: UNLOCK Position 805
Outline of Solenoid Valve 806
Outline of 4-Spool Solenoid Valve Unit (Control Valve Side) 807
Outline of 4-Spool Solenoid Valve Unit (Hydraulic Oil Tank Side) 808
Outline of 3-Spool Auxiliary Control Solenoid Valve Unit (Option) 809
Outline of Proportional Solenoid Valve 810
Operation of Proportional Solenoid Valve (When in Neutral) 811
Operation of Proportional Solenoid Valve (When Excited) 812
Outline of Hose Rupture Valve 813
Operation of Hose Rupture Valve (When Control Lever is in Neutral) 814
Operation of Hose Rupture Valve (During Boom Lower Operation) 815
Outline of Fan Motor 816
Outline of Fan Valve 817
Relief Operation of Fan Valve 817
Make-Up Operation of Fan Valve 818
Outline of Pilot Relief Valve 818
Outline of Recirculation Valve 820
Outline of Shockless Valve 820
Operation of Shockless Valve 821
Outline of Accumulator (Pilot Circuit) 823
Outline of Accumulator (Low Pressure and High Pressure) 825
Outline of Selector Valve 826
Operation of Selector Valve: OFF (Crusher) 826
Operation of Selector Valve: ON (Breaker) 827
Outline of Distribution Valve 904
Operation of Distribution Valve 827
Others (Undercarriage) 409
Outline of Swing Bearing 827
Outline of Center Joint 906
Outline of Track Adjuster 828
SERVICE MANUAL REVISION REQUEST FORM 828
TTJAQ51-EN-00 414
INTRODUCTION 0
To The Reader 0
Additional References 0
Manual Composition 0
Page Number 0
Trademark 0
Safety Alert Symbol and Headline Notations 0
Units Used 0
SYMBOL AND ABBREVIATION 0
Symbol and Abbreviation 0
CONTRASTING LIST OF PART NAME 0
Contrasting List of Part Name between Technical Manual and Parts Catalog 0
SAFETY 0
Recognize Safety Information 0
Understand Signal Words 0
Follow Safety Instructions 0
Prepare for Emergencies 0
Wear Protective Clothing 0
Protect Against Noise 0
Inspect Machine 0
General Precautions for the Cab 0
Use Handrail and Steps 0
Adjust the Operator’s Seat 0
Ensure Safety Before Rising from or Leaving Operator’s Seat 0
Fasten Your Seat Belt 0
Move and Operate Machine Safely 0
Start the Engine Only from Operator’s Seat 0
Jump Starting 0
Keep Riders off Machine 0
Precautions for Operations 0
Perform Job Site Risk Assessment Beforehand 0
Install OPG Guard 0
Restriction of Attachment Installation 0
Provide Signals for Jobs Involving Multiple Machines 0
Confirm Direction of Machine Travel 0
Drive Machine Safely 0
Avoid Injury from Rollaway Accidents 0
Avoid Accidents from Reversing and Swing Operation 0
Keep People Clear from Working Area 0
Never Position the Bucket Over Anyone 0
Avoid Undercutting 0
Avoid Tipping 0
Never Undercut a High Bank 0
Dig with Caution 0
Caution with an Overhead Obstacle 0
Avoid Power Lines 0
Precautions for Lightning 0
Object Handling 0
Protect Against Flying Debris and Falling Object 0
Park Machine Safely 0
Handle Fluids Safely−Avoid Fires 0
Transport Safely 0
Practice Maintenance Safely 0
Warn Others of Service Work 0
Support Machine Properly 0
Stay Clear of Moving Parts 0
Prevent Parts from Flying 0
Avoid Injury from Attachment Falling Accident 0
Prevent Burns 0
Replace Rubber Hoses Periodically 0
Avoid High-Pressure Fluids 0
Prevent Fires 0
Check for Oil Leaks: 0
Check for Short circuits: 0
Clean up Flammable Materials: 0
Check Key Switch: 0
Check Heat Shields: 0
Evacuating in Case of Fire 0
Beware of Exhaust Fumes 0
Precautions for Welding and Grinding 0
Avoid Heating Near Pressurized Fluid Lines 0
Avoid Applying Heat to Lines Containing Flammable Fluids 0
Precautions for Handling Accumulator and Gas Damper 0
Remove Paint Before Welding or Heating 0
Beware of Asbestos and Silica Dust and Other Contamination 0
Prevent Battery Explosions 0
Service Air Conditioning System Safely 0
Handle Chemical Products Safely 0
Dispose of Waste Properly 0
Never Ride Attachment 0
Notes on Aftertreatment Device 0
Precautions for Communication Terminal 0
Precautions for Communication Terminal Equipment 0
Notes on Protection by Operator’s Station when the Machine Rolls Over 0
Before Returning the Machine to the Customer 0
SECTION AND GROUP CONTENTS 0
CONTENTS 0
OPERATIONAL PERFORMANCE TEST 0
Introduction 0
Operational Performance Tests 0
Preparation for Performance Tests 0
Standard 0
Operational Performance Standard Table 0
Engine System Performance Standards 0
Travel System Performance Standards 0
Swing System Performance Standards 0
Front Attachment System Performance Standards 0
Lever System Performance Standards 0
Combined Operation System Performance Standards 0
Components System Performance Standards 0
Main Pump P-Q Diagram 0
Engine Control Dial Activating Range 0
Pilot Pressure Sensor (4436535) Activating Range 0
Pump Displacement Control Pressure Sensor (4436536) Activating Range 0
Pump Delivery Pressure Sensor (4436271) Activating Range 0
Monitor Indicating Values of ECM 0
Monitor Indicating Values of MC 0
Monitor Indicating Values of MC (Pressure Sensor) 0
Monitor Indicating Values of MC (Solenoid Valve) 0
Monitor Indicating Values of Switch Box Controller 0
Engine Test 0
Engine Speed 0
Lubricant Consumption 0
Machine Performance Test 0
Travel Speed 0
Track Link Revolution Speed 0
Mistrack Check 0
Travel Parking Leakage 0
Swing Speed 0
Swing Function Drift Check 0
Swing Motor Leakage 0
Maximum Swingable Slant Angle 0
Swing Bearing Play 0
Hydraulic Cylinder Cycle Time 0
Dig Function Drift Check (Maximum Reach Position) 0
Dig Function Drift Check (Arm Roll-In Position) 0
Control Lever Operating Force 0
Control Lever Stroke 0
Combined Operation of Boom Raise and Swing Function Check 0
Combined Operation of Boom Raise and Arm Roll-In Function Check 0
Component Test 0
Primary Pilot Pressure 0
Secondary Pilot Pressure 0
4-Spool Solenoid Valve Unit Set Pressure (Control Valve Side) 0
4-Spool Solenoid Valve Unit Set Pressure (Hydraulic Oil Tank Side) 0
3-Spool Auxiliary Control Solenoid Valve Unit (Option) Set Pressure 0
Main Pump Delivery Pressure 0
Fan Pump Delivery Pressure 0
Main Relief Set Pressure 0
Main Relief Valve Pressure Adjustment Procedure 0
High-Pressure Side of Main Relief Pressure Adjustment Procedure 0
Low-Pressure Side of Main Relief Pressure Adjustment Procedure 0
Relief Pressure (When Relieving Swing) 0
Relief Pressure (When Relieving Travel) 0
Overload Relief Valve Set Pressure 0
Overload Relief Valve Pressure Adjustment Procedure (Reference) 0
Main Pump Flow Rate Measurement 0
Fan Pump Flow Rate Measurement 0
Adjustment of Main Pump Flow Rate Control 0
Adjustment of Fan Pump Flow Rate Control 0
Swing Motor Drainage 0
Travel Motor Drainage 0
Adjustment 0
Rewrite of Aftertreatment Device Serial No 0
How to Clear Fault Code 0
Measuring Method of No-Load-Max Differential Pressure 0
Differential Pressure Sensor Learning 0
Filter Maintenance 0
Procedure after Replacing DCU and ECM 0
Air Bleeding from the Diesel Exhaust Fluid Defrosting Piping 0
How to Check Manual Regeneration Switch 0
Remedy at DEF Pressure Decrease 0
Clean DEF Tank 0
Remedy when Mixing Oil in DEF Tank 0
Calibration of Aerial Angle 0
Oil Monitoring Sensor Setting 0
[A] Constant Change (Oil Monitoring Sensor Setting) 0
[D] Sensor Collective Diagnosis (Oil Monitoring Sensor Functional Check) 0
[B] Diagnosis of Engine Oil Monitoring Sensor (Oil Monitoring Sensor Functional Check) 0
[C] Diagnosis of Hydraulic Oil Monitoring Sensor (Oil Monitoring Sensor Functional Check) 0
TTJAQ51-EN-00 0
TROUBLESHOOTING 596
Diagnosing Procedure 604
Introduction 604
Diagnosis Procedure 605
Electrical System Inspection 608
Precautions for Inspection and Maintenance 608
Instructions for Disconnecting Connectors 610
Instructions for Removing Relays 612
Fuse Inspection 613
Fuse Connection Destination 613
Fusible Link Inspection 615
Battery Voltage Check 618
Alternator Check 618
Continuity Check 620
Voltage and Current Measurement of 24-Volt Circuit 621
Voltage and Current Measurement of 5-Volt Circuit 626
Check by False Signal 629
Test Wire Harness 629
Removal of ECM 631
Installation of ECM 632
Removal of DCU 633
Installation of DCU 635
Removal of MC (Main Controller) 636
Installation of MC (Main Controller) 639
Removal of Monitor Controller 642
Installation of Monitor Controller 645
Removal of GSM 649
Installation of GSM 652
Removal of Aerial Angle Controller 656
Installation of Aerial Angle Controller 659
Mounting Position of Pump Delivery Pressure Sensor 662
Mounting Position of Pump Displacement Control Pressure Sensor 663
Mounting Position of Boom Raise Pilot Pressure Sensor 663
Mounting Position of Boom Lower Pilot Pressure Sensor 664
Mounting Position of Arm Roll-Out Pilot Pressure Sensor 664
Mounting Position of Arm Roll-In Pilot Pressure Sensor 665
Mounting Position of Bucket Roll-Out Pilot Pressure Sensor 666
Mounting Position of Bucket Roll-In Pilot Pressure Sensor 666
Mounting Position of Travel Pilot Pressure Sensor 667
Mounting Position of 4-Spool and 5-Spool Pilot Pressure Sensor Pilot Pressure Sensor 667
Mounting Position of Swing Pilot Pressure Sensor 668
Mounting Position of Front Pilot Pressure Sensor 669
Mounting Position of Attachment Pilot Pressure Sensor 669
Mounting Position of Fuel Sensor 670
Mounting Position of Hydraulic Oil Temperature Sensor 671
Mounting Position of Differential Pressure Sensor 672
Mounting Position of Exhaust Temperature Sensor 673
Mounting Position of NOx Sensor 674
Mounting Position of Engine Oil Monitoring Sensor 675
Mounting Position of Hydraulic Oil Monitoring Sensor 675
Mounting Position of Ambient Temperature Sensor 676
Mounting Position of Re-circulated Air Temperature Sensor 676
Mounting Position of Frost Sensor 677
Mounting Position of Solar Radiation Sensor 677
Monitor 678
Basic Screen of Monitor 678
Operating Procedures of Service Menu 678
How to Display Service Menu 679
How to Display Troubleshooting Screen 681
How to Display Monitoring 684
Monitoring Items of Engine Controller (ECM) 688
Monitoring Items of Main Controller (MC) 690
Monitoring Items of PLCU 695
Monitoring Items of Monitor Controller (Information) 695
Monitoring Items of Switch Box Controller 696
Monitoring Items of Air Conditioner Unit 697
How to Display Controller Version 697
How to Display Operation 698
How to Display Communication Terminal Status 700
List of Communication Terminal Status 701
Operating Procedures of Breaker Alarm 702
Operating Procedures of Machine Setting (Constant Change) 704
List of Machine Setting Items 707
Operating Procedures of Monitor Setting (Operation Permission) 708
Operating Procedures of Monitor Setting (Maintenance Items) 711
List of Monitor Setting Items 714
Operating Procedures of Attachment Setting (Constant Change) 717
List of Attachment Setting Items 719
Operating Procedures of Engine Setting 722
How to Display Aftertreatment Device No 724
Attachment Adjustment 725
Operating Procedures of Pump Flow Rate 726
Inspection of Engine Oil Level and Coolant Level 729
Inspection of Hour Meter and Fuel Gauge 730
Fuel Gauge 731
Coolant Temperature Gauge 732
DEF Gauge 732
Hydraulic Oil Temperature Gauge 733
e-Service 734
Outline of e-Service 734
List of Operation Data 734
Communication System 736
Component Layout 738
Main Component (Upperstructure) 738
Main Component (Undercarriage) 740
Main Component (Front Attachment) 740
Electrical System (Overview) 741
Electrical System (Rear Tray) 742
Electrical System (Switches) 743
Electrical System (Utility Space) 744
Electrical System (Around Battery) 744
Engine Oil Monitoring Sensor 745
Hydraulic Oil Monitoring Sensor 745
Engine 746
Aftertreatment Device 747
Pump Device 748
Around Pump Device 748
Control Valve 749
Signal Control Valve 749
Pilot Check Valve 750
Swing Device 751
Travel Device 751
4-Spool Solenoid Valve Unit (Control Valve Side) 751
4-Spool Solenoid Valve Unit (Hydraulic Oil Tank Side) 752
Expansion Tank 752
Air Cleaner 753
DEF Tank 753
DEF Supply Module 754
Coolant Control Valve 754
Around Radiator 755
Shockless Valve 755
Fan Valve 756
Layout of Attachment Specification Parts 756
Around Control Valve 757
Control Valve Lower Side 757
Boom Upper Area 758
Arm Upper Area 758
Distribution Valve (Upperstructure) 759
Components in Control Valve 760
Pilot Valve Side of Pilot Port 771
Control Valve Side of Pilot Port 772
Port Layout of Control Valve (Main Circuit) 774
Port Layout of Control Valve (Pilot Circuit) 776
Cab Harness 779
Main Harness 787
Pump Harness 796
NOx Harness 797
Monitor Harness 798
Console Harness 799
Control Valve Harness 801
Wiper Harness 802
Wiper Motor Harness 803
Pilot Shut-Off Solenoid Valve Harness 804
Engine Stop Switch Harness 805
Cigar Lighter Sub Harness 806
Radiator Sub Harness 807
Fuel Filter Harness 808
Engine Harness 809
Fan Reverse Harness 810
Expansion Tank Harness 811
Engine Oil Monitoring Sensor Harness 812
Rear View Camera Harness 813
Connector Layout of Monitor Controller 814
Connector Layout of MC 815
Connector Layout of ECM and VGS Controller 816
Connector Layout of DCU 817
Connector Layout of GSM 817
Connector Layout of Aerial Angle Controller 818
Connector Layout of PLCU (Option) 818
Troubleshooting A 820
Troubleshooting A (Base Machine Diagnosis by Using Fault Codes) Procedure 820
Contents of Troubleshooting A 820
MC Fault Code 73000-3 821
MC Fault Code 73000-4 823
MC Fault Code 73001-3 825
MC Fault Code 73001-4 826
MC Fault Code 73002-3 826
MC Fault Code 73003-2 827
MC Fault Code 73004-2 827
MC Fault Code 73005-2 827
MC Fault Code 73006-2 828
MC Fault Code 41000-2 828
MC Fault Code 51000-3 829
MC Fault Code 51000-4 829
MC Fault Code 51001-3 830
MC Fault Code 51001-4 831
MC Fault Code 51046-3 832
MC Fault Code 51046-4 832
MC Fault Code 51045-3 833
MC Fault Code 51045-4 834
MC Fault Code 53000-3 835
MC Fault Code 53000-4 836
MC Fault Code 53001-3 837
MC Fault Code 53001-4 838
MC Fault Code 53022-3 838
MC Fault Code 53022-4 839
MC Fault Code 53004-3 840
MC Fault Code 53004-4 841
MC Fault Code 53005-3 842
MC Fault Code 53005-4 842
MC Fault Code 53006-3 843
MC Fault Code 53006-4 844
MC Fault Code 53015-3 844
MC Fault Code 53015-4 845
MC Fault Code 53016-3 846
MC Fault Code 53016-4 847
MC Fault Code 53029-3 847
MC Fault Code 53029-4 848
MC Fault Code 53023-3 849
MC Fault Code 53023-4 850
MC Fault Code 53024-3 850
MC Fault Code 53024-4 851
MC Fault Code 53025-3 852
MC Fault Code 53025-4 853
MC Fault Code 51041-2 853
MC Fault Code 51041-6 854
MC Fault Code 51041-5 855
MC Fault Code 51042-2 855
MC Fault Code 51042-6 856
MC Fault Code 51042-5 856
MC Fault Code 51009-2 857
MC Fault Code 51009-6 858
MC Fault Code 51009-5 858
MC Fault Code 51040-2 859
MC Fault Code 51040-6 860
MC Fault Code 51040-5 860
MC Fault Code 55000-2 861
MC Fault Code 55000-6 861
MC Fault Code 55000-5 862
MC Fault Code 51038-2 863
MC Fault Code 51038-6 863
MC Fault Code 51038-5 864
MC Fault Code 51043-2 865
MC Fault Code 51043-6 865
MC Fault Code 51043-5 866
MC Fault Code 51052-2 867
MC Fault Code 51052-6 867
MC Fault Code 51052-5 868
MC Fault Code 51037-2 869
MC Fault Code 51037-6 869
MC Fault Code 51037-5 870
MC Fault Code 51050-2 871
MC Fault Code 51050-6 871
MC Fault Code 51050-5 872
MC Fault Code 51044-2 872
MC Fault Code 51044-6 873
MC Fault Code 51044-5 873
MC Fault Code 51039-2 874
MC Fault Code 51039-6 874
MC Fault Code 51039-5 875
MC Fault Code 51021-3 875
MC Fault Code 51021-4 876
MC Fault Code 51022-3 877
MC Fault Code 51022-4 878
MC Fault Code 51025-0 879
MC Fault Code 63000-2 879
MC Fault Code 73007-2 880
MC Fault Code 73034-2 880
Monitor Controller (Information) Fault Code 41001-2 880
Monitor Controller (Information) Fault Code 41002-3 881
Monitor Controller (Information) Fault Code 41003-3 881
Monitor Controller (Information) Fault Code 41003-4 882
Monitor Controller (Information) Fault Code 73033-2 884
Monitor Controller (Information) Fault Code 41004-14 884
Monitor Controller (Information) Fault Code 41005-14 884
Monitor Controller (Information) Fault Code 41006-14 885
Monitor Controller (Information) Fault Code 41007-14 885
Monitor Controller (Information) Fault Code 41008-14 886
Monitor Controller (Information) Fault Code 41004-20 886
Monitor Controller (Information) Fault Code 73013-2 886
Monitor Controller (Information) Fault Code 73014-2 887
Monitor Controller (Information) Fault Code 73015-2 887
Monitor Controller (Information) Fault Code 73016-2 888
Monitor Controller (Information) Fault Code 73017-2 888
Monitor Controller (Information) Fault Code 73018-2 888
Monitor Controller (Information) Fault Code 73019-2 889
Monitor Controller (Information) Fault Code 73020-2 889
Monitor Controller (Information) Fault Code 73021-2 890
Monitor Controller (Information) Fault Code 68004-12 890
Monitor Controller (Information) Fault Code 68005-12 890
Monitor Controller (Information) Fault Code 68006-12 891
Monitor Controller (Information) Fault Code 68007-12 891
Monitor Controller (Information) Fault Code 68008-12 891
Monitor Controller (Information) Fault Code 68009-12 891
Monitor Controller (Information) Fault Code 41002-4 891
Monitor Controller (Information) Fault Code 73029-2 892
Monitor Controller (Monitor) Fault Code 73010-2 892
Monitor Controller (Monitor) Fault Code 73011-2 893
Monitor Controller (Monitor) Fault Code 73012-2 893
Monitor Controller (Monitor) Fault Code 73030-2 893
Monitor Controller (Monitor) Fault Code 13911-3 894
Monitor Controller (Monitor) Fault Code 13912-4 894
Monitor Controller (Monitor) Fault Code 13913-3 895
Monitor Controller (Monitor) Fault Code 13914-4 896
Monitor Controller (Monitor) Fault Code 13917-3 896
Monitor Controller (Monitor) Fault Code 13918-4 897
Monitor Controller (Monitor) Fault Code 13921-3 897
Monitor Controller (Monitor) Fault Code 13922-4 898
Monitor Controller (Monitor) Fault Code 13943-2 898
Monitor Controller (Monitor) Fault Code 13944-2 899
Monitor Controller (Monitor) Fault Code 13951-2 900
Monitor Controller (Monitor) Fault Code 13991-2 900
Monitor Controller (Monitor) Fault Code 13992-2 901
Switch Box Controller Fault Code 14504-3 901
Switch Box Controller Fault Code 14504-4 901
Aerial Angle Controller Fault Code 68000-2 902
Aerial Angle Controller Fault Code 68001-2 902
Aerial Angle Controller Fault Code 68002-2 903
Aerial Angle Controller Fault Code 73022-2 904
Aerial Angle Controller Fault Code 68003-2 904
Power-CAN harness Check 904
Body-CAN Harness Check 906
ISO-CAN (Engine) Harness Check 908
IF-CAN Harness Check 910
OPT-CAN Harness Check 911
ECM Fault Code List 911
DCU Fault Code List 921
Troubleshooting B 932
Troubleshooting B (Machine Diagnosis by Using Trouble Symptom) Procedure 932
Contents of Troubleshooting B 932
Relationship between Machine Trouble Symptoms and Related Parts 934
When a Fault Occurs in MC (Main Controller) 934
When a Fault Occurs in Switch Box Controller 934
When a Fault Occurs in Engine Control Dial 934
When a Fault Occurs in Auto-Idle Switch 935
When a Fault Occurs in Power Mode Switch 935
When a Fault Occurs in Travel Mode Switch 935
When a Fault Occurs in Power Digging Switch 936
When a Fault Occurs in Pilot Shut-Off Switch (Pilot Shut-Off Lever) 936
When a Fault Occurs in Manual Regeneration Switch 937
When a Fault Occurs in Aerial Angle Switch 937
When a Fault Occurs in Learning Switch 937
When a Fault Occurs in Fan Reverse Rotation Switch 938
When a Fault Occurs in Boom Mode Selector Switch 938
When a Fault Occurs in Auto-Lubrication Switch 938
When a Fault Occurs in Proximity Switch 939
When a Fault Occurs in Pilot Shut-Off Solenoid Valve 939
When a Fault Occurs in Hydraulic Oil Temperature Sensor 939
When a Fault Occurs in Differential Pressure Sensor 940
When a Fault Occurs in DOC Inlet Exhaust Temperature Sensor 940
When a Fault Occurs in DOC Outlet Exhaust Temperature Sensor 940
When a Fault Occurs in SCR Exhaust Temperature Sensor 941
When a Fault Occurs in Pump 1 Delivery Pressure Sensor 941
When a Fault Occurs in Pump 2 Delivery Pressure Sensor 941
When a Fault Occurs in Pump 1 Displacement Control Pressure Sensor 942
When a Fault Occurs in Pump 2 Displacement Control Pressure Sensor 942
When a Fault Occurs Swing Pilot Pressure Sensor 942
When a Fault Occurs in Boom Raise Pilot Pressure Sensor 943
When a Fault Occurs in Boom Lower Pilot Pressure Sensor 943
When a Fault Occurs in Arm Roll-In Pilot Pressure Sensor 943
When a Fault Occurs in Travel Pilot Pressure Sensor 944
When a Fault Occurs in Front Pilot Pressure Sensor 944
When a Fault Occurs in Bucket Roll-In Pilot Pressure Sensor 945
When a Fault Occurs in Arm Roll-Out Pilot Pressure Sensor 945
When a Fault Occurs in Bucket Roll-Out Pilot Pressure Sensor 945
When a Fault Occurs in 5-Spool Pilot Pressure Sensor 946
When a Fault Occurs in 4-Spool Pilot Pressure Sensor 946
When a Fault Occurs in Attachment Pilot Pressure Sensor (Option) 946
When a Fault Occurs in Pump 2 Control Solenoid Valve 947
When a Fault Occurs in Pump 1 Control Solenoid Valve 947
When a Fault Occurs in Swing Flow Rate Control Solenoid Valve (SI) 947
When a Fault Occurs in Maximum Boom Mode Selector Control Solenoid Valve (SF) 948
When a Fault Occurs in Travel Motor Displacement Angle Solenoid Valve (SC) 948
When a Fault Occurs in Main Relief Valve Control Solenoid Valve (SF) 949
When a Fault Occurs in Arm 2 Flow Rate Control Solenoid Valve (SG) 949
When a Fault Occurs in Arm Regenerative Control Solenoid Valve (SI) 950
When a Fault Occurs in 4-Spool Bypass Shut-Out Control Solenoid Valve (SG) 950
When a Fault Occurs in 5-Spool Bypass Shut-Out Control Solenoid Valve (SC) 951
When a Fault Occurs in Fan Reverse Rotation Control Solenoid Valve 951
When a Fault Occurs in Fan Pump Control Solenoid Valve 951
When a Fault Occurs in Main Relief Valve 952
When a Fault Occurs in Overload Relief Valve 952
When a Fault Occurs in Boom Anti-Drift Valve 952
When a Fault Occurs in Arm Rod Anti-Drift Valve 953
When a Fault Occurs in Flow Combiner Valve 953
When a Fault Occurs in Boom Regenerative Valve 954
When a Fault Occurs in Arm Regenerative Valve 954
When a Fault Occurs in Arm Regeneration Cut Valve 954
When a Fault Occurs in Bucket Regenerative Valve 955
When a Fault Occurs in Bucket Regeneration Cut Valve 955
When a Fault Occurs in Arm 1 Flow Rate Control Valve 955
When a Fault Occurs in Arm 2 Flow Rate Control Valve 956
When a Fault Occurs in Swing Flow Rate Control Valve 956
When a Fault Occurs in Boom Flow Rate Control Valve 957
When a Fault Occurs in Auxiliary Flow Combiner Valve 957
When a Fault Occurs in Pump 1 Bypass Shut-Out Valve 958
When a Fault Occurs in Pump 2 Bypass Shut-Out Valve 958
When a Fault Occurs in Boom Lower Meter-In Cut Valve 959
When a Fault Occurs in Travel Motor Displacement Angle Control Valve 959
When a Fault Occurs in Swing Parking Brake Release Spool 960
When a Fault Occurs in Arm Flow Rate Control Valve Control Spool 960
When a Fault Occurs in Flow Combiner Valve Control Spool 961
When a Fault Occurs in Auxiliary Flow Combiner Control Solenoid Valve (SA) (Option) 961
When a Fault Occurs in Selector Valve Control Solenoid Valve (SC) (Option) 961
When a Fault Occurs in Selector Valve (Option) 962
When a Fault Occurs in Auxiliary Overload Relief Valve Control Solenoid Valve (SB) (Option) 962
Identification Symbol of Troubleshooting B 962
Correlation between Trouble Symptoms and Part Failures 964
Parts Related with “E-1 Starter does not rotate” 964
Parts Related with “E-2 Even if starter rotates, engine does not start” 964
Parts Related with “E-3 Even if power mode switch is operated, power mode is not shifted” 964
Parts Related with “E-4 ECO, PWR mode is faulty” 965
Parts Related with “E-5 Even if travel lever is single operation with ECO or PWR mode, engine speed does not increase” 965
Parts Related with “E-6 Auto-idle system is faulty” 965
Parts Related with “E-9 Auto shut-down is not activated” 966
Parts Related with “E-12 Engine speed does not decrease when audio mute/one-touch idle switch is pushed” 966
Parts Related with “A-1 All actuators do not work” 967
Parts Related with “A-2 All actuator speeds are slow” 967
Parts Related with “A-3 Actuator does not stop even if control lever is set to neutral” 967
Parts Related with “A-4 Auto or manual regeneration of aftertreatment device cannot be performed” 968
Parts Related with “A-5 Travel (right) operation speed is slow when performing travel single operation Bucket single operation speed is slow (All problems occur at the same time)” 968
Parts Related with “A-6 Travel (left) operation speed is slow when performing travel single operation Attachment single operation speed is slow (All problems occur at the same time)” 968
Parts Related with “A-11 Fan does not rotate normally” 969
Parts Related with “A-12 Fan does not rotate in reverse when fan reverse rotation switch is pressed” 969
Parts Related with “F-1 All front attachment actuator powers are weak” 969
Parts Related with “F-2 Front attachment drifts remarkably” 970
Parts Related with “F-3 When boom raise or arm roll-out is operated, boom or arm starts to move after moving slightly down” 970
Parts Related with “F-4 Even if power digging switch is pushed, power does not increase Boom raise power is weak when performing digging operation” 970
Parts Related with “F-5 Boom, arm, or bucket single operation is not operated Boom, arm, or bucket single operation speed is slow” 971
Parts Related with “F-6 Bucket roll-in speed is slow or power is weak when performing digging operation” 971
Parts Related with “F-7 When performing combined operation, arm does not start to move smoothly Arm starts to move slightly slow when performing arm single operation These troubles often occur when temperature is low” 971
Parts Related with “F-8 When performing combined operation, boom does not start to move smoothly Boom starts to move slightly slow when performing boom lower single operation” 972
Parts Related with “F-9 Boom lower speed above ground is faster than other actuators when performing combined operation Machine cannot be raised off the ground” 972
Parts Related with “F-10 Arm roll-in speed is slow when performing combined operation of arm roll-in and bucket roll-in” 972
Parts Related with “F-11 Arm roll-in speed is fast when performing arm level crowding operation Arm power is weak when performing digging operation” 973
Parts Related with “F-12 Boom raise speed is slow when performing combined operation of swing and boom raise Arm roll-out speed is slow when performing combined operation of swing and arm roll-out” 973
Parts Related with “F-25 Machine is raised off the ground even when boom mode selector switch is pressed” 973
Parts Related with “S-1 Swing speed is slow or is not operated” 974
Parts Related with “S-2 When starting swing operation, swing speed is fast” 974
Parts Related with “S-3 Swing speed is slow when performing combined operation of swing and arm roll-in” 975
Parts Related with “T-1 Both of right and left travels are not operated or travel speed is slow” 975
Parts Related with “T-2 One side travel is not operated or travel speed is slow Machine mistracks” 975
Parts Related with “T-3 Machine mistracks when performing combined operation of travel and front attachment” 975
Parts Related with “T-4 Fast travel can not be selected Travel mode does not change from slow speed mode to fast speed mode” 976
Parts Related with “O-1 Work light does not light” 976
Parts Related with “O-2 Cab light does not light” 976
Parts Related with “O-3 Wiper is not operated” 977
Parts Related with “O-4 Washer is not operated” 977
Parts Related with “O-5 Boom light does not light” 977
Parts Related with “O-6 Camera image does not change when aerial angle switch is pressed” 977
Parts Related with “O-7 Auto-lubrication does not activate when auto-lubrication switch is turned ON” 978
Parts Related with “O-8 Auto-lubrication does not stop when lubrication time is exceeded Auto-lubrication does not stop when auto-lubrication switch is turned OFF” 978
Parts Related with “O-9 Auto-lubrication device stops, and auto-lubrication alarm is displayed” 978
E-1 Starter does not rotate 978
E-2 Even if starter rotates, engine does not start 980
E-3 Even if power mode switch is operated, power mode is not shifted 980
E-4 ECO, PWR mode is faulty 981
E-5 Even if travel lever is single operation with ECO or PWR mode, engine speed does not increase 981
E-6 Auto-idle system is faulty 982
E-9 Auto shut-down is not activated 982
E-12 Engine speed does not decrease when audio mute/one-touch idle switch is pushed 983
A-1 All actuators do not work 984
A-2 All actuator speeds are slow 985
A-3 Actuator does not stop even if control lever is set to neutral 986
A-4 Auto or manual regeneration of aftertreatment device cannot be performed 986
A-5 Travel (right) operation speed is slow when performing travel single operation Bucket single operation speed is slow (All problems occur at the same time) 987
A-6 Travel (left) operation speed is slow when performing travel single operation Attachment single operation speed is slow (All problems occur at the same time) 988
A-11 Fan does not rotate normally 988
A-12 Fan does not rotate in reverse when fan reverse rotation switch is pressed 988
F-1 All front attachment actuator powers are weak 989
F-2 Front attachment drifts remarkably 989
F-3 When boom raise or arm roll-out is operated, boom or arm starts to move after moving slightly down 990
F-4 Even if power digging switch is pushed, power does not increase Boom raise power is weak when performing digging operation 991
F-5 Boom, arm, or bucket single operation is not operated Boom, arm, or bucket single operation speed is slow 991
F-6 Bucket roll-in speed is slow or power is weak when performing digging operation 992
F-7 When performing combined operation, arm does not start to move smoothly Arm starts to move slightly slow when performing arm single operation These troubles often occur when temperature is low 992
F-8 When performing combined operation, boom does not start to move smoothly Boom starts to move slightly slow when performing boom lower single operation 993
F-9 Boom lower speed above ground is faster than other actuators when performing combined operation Machine cannot be raised off the ground 993
F-10 Arm roll-in speed is slow when performing combined operation of arm roll-in and bucket roll-in 994
F-11 Arm roll-in speed is fast when performing arm level crowding operation Arm power is weak when performing digging operation 994
F-12 Boom raise speed is slow when performing combined operation of swing and boom raise Arm roll-out speed is slow when performing combined operation of swing and arm roll-out 995
F-25 Machine is raised off ground even when boom mode selector switch is pressed 995
S-1 Swing speed is slow or is not operated 995
S-2 When starting swing operation, swing speed is fast 996
S-3 Swing speed is slow when performing combined operation of swing and arm roll-in 997
T-1 Both of right and left travels are not operated or travel speed is slow 998
T-2 One side travel is not operated or travel speed is slow Machine mistracks 998
T-3 Machine mistracks when performing combined operation of travel and front attachment 999
T-4 Fast travel can not be selected Travel mode does not change from slow speed mode to fast speed mode1000
O-1 Work light does not light1000
O-2 Cab light does not light1001
O-3 Wiper is not operated1001
O-4 Washer is not operated1002
O-5 Boom light does not light1003
O-6 Camera image does not change when aerial angle switch is pressed1003
O-7 Auto-lubrication does not activate when auto-lubrication switch is turned ON1004
O-8 Auto-lubrication does not stop when lubrication time is exceeded Auto-lubrication does not stop when auto-lubrication switch is turned OFF1005
O-9 Auto-lubrication device stops, and auto-lubrication alarm is displayed1005
Exchange Inspection1006
How to Lower Boom in Case of Emergency and When Engine Stops without Hose Rupture Valve1008
Air Conditioner1010
Outline of Air Conditioner1010
Component Layout of Air Conditioner1011
Functions of Main Electrical Parts1013
Troubleshooting of Air Conditioner1016
Monitor Controller (Monitor) Fault Code 13911-31017
Monitor Controller (Monitor) Fault Code 13912-41017
Monitor Controller (Monitor) Fault Code 13913-31018
Monitor Controller (Monitor) Fault Code 13914-41019
Monitor Controller (Monitor) Fault Code 13917-31019
Monitor Controller (Monitor) Fault Code 13918-41020
Monitor Controller (Monitor) Fault Code 13921-31020
Monitor Controller (Monitor) Fault Code 13922-41021
Monitor Controller (Monitor) Fault Code 13943-21021
Monitor Controller (Monitor) Fault Code 13944-21022
Monitor Controller (Monitor) Fault Code 13951-21023
Monitor Controller (Monitor) Fault Code 13991-21023
Monitor Controller (Monitor) Fault Code 13992-21024
Faulty Cooling (1)1025
Faulty Cooling (2)1026
Faulty Cooling (3)1027
Faulty Cooling (4)1029
Faulty Cooling (5)1031
Faulty Heating (1)1032
Faulty Heating (2)1034
Others1035
Blower motor does not operate1037
Compressor clutch does not operate1038
Cooling Circuit Check by Using Manifold Gauge1039
Work after Replacing Components1042
Refill compressor oil1042
Necessity of Purging1043
Procedures for Charging Air Conditioner with Refrigerant1043
Warm-Up Operation1049
Hose and Pipe Tightening Torque1051
SERVICE MANUAL REVISION REQUEST FORM1052
The Attached Diagram List1053
ELECTRICAL CIRCUIT DIAGRAM 1055
CONNECTORS1056
CAB HARNESS1057
MAIN HARNESS1058
CAB REAR HARNESS (OPTION) 1059
CONSOLE HARNESS (OPTION)1060
PUMP HARNESS 1061
NOx HARNESS 1062
MONITOR HARNESS 1063
CONSOLE HARNESS 1064
CONTROL VALVE HARNESS 1065
WIPER HARNESS 1066
WIPER MOTOR HARNESS 1067
PILOT SHUT-OFF SOLENOID VALVE HARNESS 1068
ENGINE STOP SWITCH HARNESS 1069
CAMERA LIGHT HARNESS 1070
RADIATOR SUB HARNESS 1071
FUEL FILTER HARNESS1072
ENGINE HARNESS 1073
FAN REVERCE HARNESS 1074
EXPANSION TANK HARNESS 1075
ENGINE OIL MONITORING SENSOR HARNESS1076
REAR VIEW CAMERA HARNESS1077
BOOM LIGHT HARNESS 1078
24V SOCKET HARNESS 1079
HYDRAULIC CIRCUIT DIAGRAM 1080
HYDRAULIC CIRCUIT DIAGRA (BREAKER/CRUSHER)1081
HYDRAULIC CIRCUIT DIAGRAM (HOSE RUPTURE VALVE)1082

S.M 1/2/25