Technical Manual Hitachi ZX890LCH-7, ZX890LCR-7 Hydraulic Excavator | TTJBR41-EN-00

Technical Manual Hitachi ZX890LCH-7, ZX890LCR-7 Hydraulic Excavator TTJBR41-EN-00 (Preview)

ZX 890-7 Technical Manual Troubleshooting 1
TTJBR41-EN-00
INTRODUCTION
To The Reader
Additional References
Manual Composition
Page Number
Trademark
Safety Alert Symbol and Headline Notations
Units Used
SYMBOL AND ABBREVIATION
Symbol and Abbreviation
CONTRASTING LIST OF PART NAME
Contrasting List of Part Name between Technical Manual and Parts Catalog
SAFETY
Recognize Safety Information
Understand Signal Words
Follow Safety Instructions
Prepare for Emergencies
Wear Protective Clothing
Protect Against Noise
Inspect Machine
General Precautions for the Cab
Use Handrail and Steps
Adjust the Operator’s Seat
Ensure Safety Before Rising from or Leaving Operator’s Seat
Fasten Your Seat Belt
Move and Operate Machine Safely
Start the Engine Only from Operator’s Seat
Jump Starting
Keep Riders off Machine
Precautions for Operations
Perform Job Site Risk Assessment Beforehand
Install OPG Guard
Restriction of Attachment Installation
Provide Signals for Jobs Involving Multiple Machines
Confirm Direction of Machine Travel
Drive Machine Safely
Avoid Injury from Rollaway Accidents
Avoid Accidents from Reversing and Swing Operation
Keep People Clear from Working Area
Never Position the Bucket Over Anyone
Avoid Undercutting
Avoid Tipping
Never Undercut a High Bank
Dig with Caution
Caution with an Overhead Obstacle
Avoid Power Lines
Precautions for Lightning
Lifting Application
Protect Against Flying Debris and Falling Object
Park Machine Safely
Handle Fluids Safely−Avoid Fires
Transport Safely
Practice Maintenance Safely
Warn Others of Service Work
Support Machine Properly
Stay Clear of Moving Parts
Prevent Parts from Flying
Avoid Injury from Attachment Falling Accident
Prevent Burns
Replace Rubber Hoses Periodically
Avoid High-Pressure Fluids
Prevent Fires
Check for Oil Leaks:
Check for Short circuits:
Clean up Flammable Materials:
Check Key Switch:
Check Heat Shields:
Evacuating in Case of Fire
Beware of Exhaust Fumes
Precautions for Welding and Grinding
Avoid Heating Near Pressurized Fluid Lines
Avoid Applying Heat to Lines Containing Flammable Fluids
Precautions for Handling Accumulator and Gas Damper
Remove Paint Before Welding or Heating
Beware of Asbestos and Silica Dust and Other Contamination
Prevent Battery Explosions
Service Air Conditioning System Safely
Handle Chemical Products Safely
Dispose of Waste Properly
Never Ride Attachment
Notes on Aftertreatment Device
Precautions for Communication Terminal
Precautions for Communication Terminal Equipment
Before Returning the Machine to the Customer
SECTION AND GROUP CONTENTS
CONTENTS
OPERATIONAL PERFORMANCE TEST
Introduction
Operational Performance Tests
Preparation for Performance Tests
Standard
Operational Performance Standard Table
Engine System Performance Standards
Travel System Performance Standards
Swing System Performance Standards
Front Attachment System Performance Standards
Lever System Performance Standards
Combined Operation System Performance Standards
Components System Performance Standards
Main Pump P-Q Diagram
Fan Pump I-Q Diagram
Engine Control Dial Activating Range
Pilot Pressure Sensor (4436535) Activating Range
Pump Displacement Control Pressure Sensor (4436536) Activating Range
Pump Delivery Pressure Sensor (4668254) Activating Range
Monitor Indicating Values of ECM
Monitor Indicating Values of MC
Monitor Indicating Values of MC (Pressure Sensor)
Monitor Indicating Values of MC (Solenoid Valve)
Monitor Indicating Values of Switch Box Controller
Engine Test
Engine Speed
Lubricant Consumption
Machine Performance Test
Travel Speed
Track Link Revolution Speed
Mistrack Check
Travel Parking Leakage
Swing Speed
Swing Function Drift Check
Swing Motor Leakage
Maximum Swingable Slant Angle
Swing Bearing Play
Hydraulic Cylinder Cycle Time
Dig Function Drift Check (Maximum Reach Position)
Dig Function Drift Check (Arm Roll-In Position)
Control Lever Operating Force
Control Lever Stroke
Combined Operation of Boom Raise and Swing Function Check
Combined Operation of Boom Raise and Arm Roll-In Function Check
Component Test
Primary Pilot Pressure
Secondary Pilot Pressure
4-Spool Solenoid Valve Unit Set Pressure (Control Valve Side)
4-Spool Solenoid Valve Unit Set Pressure (Hydraulic Oil Tank Side)
Main Pump Delivery Pressure
Fan Pump Delivery Pressure
Main Relief Set Pressure
Main Relief Valve Pressure Adjustment Procedure
High-Pressure Side of Main Relief Pressure Adjustment Procedure
Low-Pressure Side of Main Relief Pressure Adjustment Procedure
Relief Pressure (When Relieving Swing)
Relief Pressure (When Relieving Travel)
Overload Relief Valve Set Pressure
Overload Relief Valve Pressure Adjustment Procedure (Reference)
Main Pump Flow Rate
Fan Pump Flow Rate
Adjustment of Main Pump Flow Rate Control
Adjustment of Fan Pump Flow Rate Control
Swing Motor Drainage
Travel Motor Drainage
Radiator Fan Motor Drainage
Oil Cooler Fan Motor Drainage
Adjustment
Rewrite of Aftertreatment Device Serial No.
How to Clear Fault Code
Measuring Method of No-Load-Max Differential Pressure
Differential Pressure Sensor Learning
Filter Maintenance
Procedure after Replacing DCU and ECM
Air Bleeding from the Diesel Exhaust Fluid Defrosting Piping
How to Check Manual Regeneration Switch
Remedy at DEF Pressure Decrease
Clean DEF Tank
Remedy when Mixing Oil in DEF Tank
Calibration of Aerial Angle
Oil Monitoring Sensor Setting
[A] Constant Change (Oil Monitoring Sensor Setting)
[D] Sensor Collective Diagnosis (Oil Monitoring Sensor Functional Check)
[B] Diagnosis of Engine Oil Monitoring Sensor (Oil Monitoring Sensor Functional Check)
[C] Diagnosis of Hydraulic Oil Monitoring Sensor (Oil Monitoring Sensor Functional Check)
ZX 890-7 Technical Manual Troubleshooting 2
TTJBR41-EN-00
TROUBLESHOOTING
Diagnosing Procedure
Introduction
Diagnosis Procedure
Electrical System Inspection
Precautions for Inspection and Maintenance
Instructions for Disconnecting Connectors
Instructions for Removing Relays
Fuse Inspection
Fuse Connection Destination
Fusible Link Inspection
Battery Voltage Check
Alternator Check
Continuity Check
Voltage and Current Measurement of 24-Volt Circuit
Voltage and Current Measurement of 5-Volt Circuit
Check by False Signal
Test Wire Harness
Removal of ECM
Installation of ECM
Removal of DCU
Installation of DCU
Removal of MC (Main Controller)
Installation of MC (Main Controller)
Removal of Monitor Controller
Installation of Monitor Controller
Removal of GSM
Installation of GSM
Removal of Aerial Angle Controller
Installation of Aerial Angle Controller
Mounting Position of Pump Delivery Pressure Sensor
Mounting Position of Pump Displacement Control Pressure Sensor
Mounting Position of Boom Raise Pilot Pressure Sensor
Mounting Position of Boom Lower Pilot Pressure Sensor
Mounting Position of Arm Roll-Out Pilot Pressure Sensor
Mounting Position of Arm Roll-In Pilot Pressure Sensor
Mounting Position of Bucket Roll-Out Pilot Pressure Sensor
Mounting Position of Bucket Roll-In Pilot Pressure Sensor
Mounting Position of Travel Pilot Pressure Sensor
Mounting Position of 4-Spool and 5-Spool Pilot Pressure Sensor Pilot Pressure Sensor
Mounting Position of Swing Pilot Pressure Sensor
Mounting Position of Front Pilot Pressure Sensor
Mounting Position of Attachment Pilot Pressure Sensor
Mounting Position of Fuel Sensor
Mounting Position of Hydraulic Oil Temperature Sensor
Mounting Position of Differential Pressure Sensor
Mounting Position of Exhaust Temperature Sensor
Mounting Position of NOx Sensor
Mounting Position of Engine Oil Monitoring Sensor
Mounting Position of Hydraulic Oil Monitoring Sensor
Mounting Position of Ambient Temperature Sensor
Mounting Position of Re-circulated Air Temperature Sensor
Mounting Position of Frost Sensor
Mounting Position of Solar Radiation Sensor
Monitor
Basic Screen of Monitor
Operating Procedures of Service Menu
How to Display Service Menu
How to Display Troubleshooting Screen
How to Display Monitoring
Monitoring Items of Engine Controller (ECM)
Monitoring Items of Main Controller (MC)
Monitoring Items of PLCU
Monitoring Items of Monitor Controller (Information)
Monitoring Items of Switch Box Controller
Monitoring Items of Air Conditioner Unit
How to Display Controller Version
How to Display Operation
How to Display Communication Terminal Status
List of Communication Terminal Status
Operating Procedures of Breaker Alarm
Operating Procedures of Machine Setting (Constant Change)
List of Machine Setting Items
Operating Procedures of Monitor Setting (Operation Permission)
Operating Procedures of Monitor Setting (Maintenance Items)
List of Monitor Setting Items
Operating Procedures of Attachment Setting (Constant Change)
List of Attachment Setting Items
Operating Procedures of Engine Setting
How to Display Aftertreatment Device No.
Attachment Adjustment
Operating Procedures of Pump Flow Rate
Inspection of Engine Oil Level and Coolant Level
Inspection of Hour Meter and Fuel Gauge
Fuel Gauge
Coolant Temperature Gauge
DEF Gauge
Hydraulic Oil Temperature Gauge
e-Service
Outline of e-Service
List of Operation Data
Communication System
Component Layout
Main Component (Upperstructure)
Main Component (Undercarriage)
Main Component (Front Attachment)
Electrical System (Overview)
Electrical System (Rear Tray)
Electrical System (Switches)
Electrical System (Utility Space)
Electrical System (Around Battery)
Engine Oil Monitoring Sensor
Hydraulic Oil Monitoring Sensor
Engine
Aftertreatment Device
Pump Device
Control Valve
Signal Control Valve
Pilot Check Valve
Swing Device
Travel Device
4-Spool Solenoid Valve Unit (Control Valve Side)
4-Spool Solenoid Valve Unit (Hydraulic Oil Tank Side)
Expansion Tank
Air Cleaner
DEF Tank
DEF Supply Module
Electric Fuel Pump
Around Radiator
Around Oil Cooler
Shockless Valve
Radiator Fan Valve
Oil Cooler Fan Valve
Boom Upper Area
Arm Upper Area
Distribution Valve (Upperstructure)
Auto-Lubrication Device
Components in Control Valve
Pilot Valve Side of Pilot Port
Control Valve Side of Pilot Port
Port Layout of Control Valve (Main Circuit)
Port Layout of Control Valve (Pilot Circuit)
Cab Harness
Main Harness
Pump Harness
NOx Harness
Monitor Harness
Console Harness
Control Valve Harness
Wiper Harness
Wiper Motor Harness
Pilot Shut-Off Solenoid Valve Harness
Engine Stop Switch Harness
Cigar Lighter Sub Harness
Engine Harness
Rear View Camera Harness
Oil Cooler Harness
Auto Lubrication Harness
Connector Layout of Monitor Controller
Connector Layout of MC
Connector Layout of ECM and VGS Controller
Connector Layout of DCU
Connector Layout of GSM
Connector Layout of Aerial Angle Controller
Connector Layout of PLCU (Option)
Troubleshooting A
Troubleshooting A (Base Machine Diagnosis by Using Fault Codes) Procedure
Contents of Troubleshooting A
MC Fault Code 73000-3
MC Fault Code 73000-4
MC Fault Code 73001-3
MC Fault Code 73001-4
MC Fault Code 73002-3
MC Fault Code 73003-2
MC Fault Code 73004-2
MC Fault Code 73005-2
MC Fault Code 73006-2
MC Fault Code 41000-2
MC Fault Code 51000-3
MC Fault Code 51000-4
MC Fault Code 51001-3
MC Fault Code 51001-4
MC Fault Code 51046-3
MC Fault Code 51046-4
MC Fault Code 51045-3
MC Fault Code 51045-4
MC Fault Code 53000-3
MC Fault Code 53000-4
MC Fault Code 53001-3
MC Fault Code 53001-4
MC Fault Code 53022-3
MC Fault Code 53022-4
MCの故障コード53004-3
MCの故障コード53004-4
MC Fault Code 53005-3
MC Fault Code 53005-4
MC Fault Code 53006-3
MC Fault Code 53006-4
MC Fault Code 53015-3
MC Fault Code 53015-4
MC Fault Code 53016-3
MC Fault Code 53016-4
MC Fault Code 53029-3
MC Fault Code 53029-4
MC Fault Code 53023-3
MC Fault Code 53023-4
MC Fault Code 53024-3
MC Fault Code 53024-4
MC Fault Code 53025-3
MC Fault Code 53025-4
MC Fault Code 51041-2
MC Fault Code 51041-6
MC Fault Code 51041-5
MC Fault Code 51042-2
MC Fault Code 51042-6
MC Fault Code 51042-5
MC Fault Code 51009-2
MC Fault Code 51009-6
MC Fault Code 51009-5
MC Fault Code 51040-2
MC Fault Code 51040-6
MC Fault Code 51040-5
MC Fault Code 55000-2
MC Fault Code 55000-6
MC Fault Code 55000-5
MC Fault Code 51038-2
MC Fault Code 51038-6
MC Fault Code 51038-5
MC Fault Code 51043-2
MC Fault Code 51043-6
MC Fault Code 51043-5
MC Fault Code 51051-2
MC Fault Code 51051-6
MC Fault Code 51051-5
MC Fault Code 51052-2
MC Fault Code 51052-6
MC Fault Code 51052-5
MC Fault Code 51037-2
MC Fault Code 51037-6
MC Fault Code 51037-5
MC Fault Code 51050-2
MC Fault Code 51050-6
MC Fault Code 51050-5
MC Fault Code 51044-2
MC Fault Code 51044-6
MC Fault Code 51044-5
MC Fault Code 51039-2
MC Fault Code 51039-6
MC Fault Code 51039-5
MC Fault Code 51021-3
MC Fault Code 51021-4
MC Fault Code 51022-3
MC Fault Code 51022-4
MC Fault Code 51025-0
MC Fault Code 63000-2
MC Fault Code 73007-2
MC Fault Code 73034-2
Monitor Controller (Information) Fault Code 41001-2
Monitor Controller (Information) Fault Code 41002-3
Monitor Controller (Information) Fault Code 41003-3
Monitor Controller (Information) Fault Code 41003-4
Monitor Controller (Information) Fault Code 73033-2
Monitor Controller (Information) Fault Code 41004-14
Monitor Controller (Information) Fault Code 41005-14
Monitor Controller (Information) Fault Code 41006-14
Monitor Controller (Information) Fault Code 41007-14
Monitor Controller (Information) Fault Code 41008-14
Monitor Controller (Information) Fault Code 41004-20
Monitor Controller (Information) Fault Code 73013-2
Monitor Controller (Information) Fault Code 73014-2
Monitor Controller (Information) Fault Code 73015-2
Monitor Controller (Information) Fault Code 73016-2
Monitor Controller (Information) Fault Code 73017-2
Monitor Controller (Information) Fault Code 73018-2
Monitor Controller (Information) Fault Code 73019-2
Monitor Controller (Information) Fault Code 73020-2
Monitor Controller (Information) Fault Code 73021-2
Monitor Controller (Information) Fault Code 68004-12
Monitor Controller (Information) Fault Code 68005-12
Monitor Controller (Information) Fault Code 68006-12
Monitor Controller (Information) Fault Code 68007-12
Monitor Controller (Information) Fault Code 68008-12
Monitor Controller (Information) Fault Code 68009-12
Monitor Controller (Information) Fault Code 41002-4
Monitor Controller (Information) Fault Code 73029-2
Monitor Controller (Monitor) Fault Code 73010-2
Monitor Controller (Monitor) Fault Code 73011-2
Monitor Controller (Monitor) Fault Code 73012-2
Monitor Controller (Monitor) Fault Code 73030-2
Monitor Controller (Monitor) Fault Code 13911-3
Monitor Controller (Monitor) Fault Code 13912-4
Monitor Controller (Monitor) Fault Code 13913-3
Monitor Controller (Monitor) Fault Code 13914-4
Monitor Controller (Monitor) Fault Code 13917-3
Monitor Controller (Monitor) Fault Code 13918-4
Monitor Controller (Monitor) Fault Code 13921-3
Monitor Controller (Monitor) Fault Code 13922-4
Monitor Controller (Monitor) Fault Code 13943-2
Monitor Controller (Monitor) Fault Code 13944-2
Monitor Controller (Monitor) Fault Code 13951-2
Monitor Controller (Monitor) Fault Code 13991-2
Monitor Controller (Monitor) Fault Code 13992-2
Switch Box Controller Fault Code 14504-3
Switch Box Controller Fault Code 14504-4
Aerial Angle Controller Fault Code 68000-2
Aerial Angle Controller Fault Code 68001-2
Aerial Angle Controller Fault Code 68002-2
Aerial Angle Controller Fault Code 73022-2
Aerial Angle Controller Fault Code 68003-2
Power-CAN harness Check
Body-CAN Harness Check
ISO-CAN (Engine) Harness Check
IF-CAN Harness Check
OPT-CAN Harness Check
ECM Fault Code List
DCU Fault Code List
Troubleshooting B
Troubleshooting B (Machine Diagnosis by Using Trouble Symptom) Procedure
Contents of Troubleshooting B
Relationship between Machine Trouble Symptoms and Related Parts
When a Fault Occurs in MC (Main Controller)
When a Fault Occurs in Switch Box Controller
When a Fault Occurs in Engine Control Dial
When a Fault Occurs in Auto-Idle Switch
When a Fault Occurs in Power Mode Switch
When a Fault Occurs in Travel Mode Switch
When a Fault Occurs in Power Digging Switch
When a Fault Occurs in Pilot Shut-Off Switch (Pilot Shut-Off Lever)
When a Fault Occurs in Manual Regeneration Switch
When a Fault Occurs in Aerial Angle Switch
When a Fault Occurs in Learning Switch
When a Fault Occurs in Fan Reverse Rotation Switch
When a Fault Occurs in Boom Mode Selector Switch
When a Fault Occurs in Auto-Lubrication Switch
When a Fault Occurs in Proximity Switch
When a Fault Occurs in Pilot Shut-Off Solenoid Valve
When a Fault Occurs in Hydraulic Oil Temperature Sensor
When a Fault Occurs in Differential Pressure Sensor
When a Fault Occurs in DOC Inlet Exhaust Temperature Sensor
When a Fault Occurs in DOC Outlet Exhaust Temperature Sensor
When a Fault Occurs in SCR Exhaust Temperature Sensor
When a Fault Occurs in Pump 1 Delivery Pressure Sensor
When a Fault Occurs in Pump 2 Delivery Pressure Sensor
When a Fault Occurs in Pump 1 Displacement Control Pressure Sensor
When a Fault Occurs in Pump 2 Displacement Control Pressure Sensor
When a Fault Occurs Swing Pilot Pressure Sensor
When a Fault Occurs in Boom Raise Pilot Pressure Sensor
When a Fault Occurs in Boom Lower Pilot Pressure Sensor
When a Fault Occurs in Arm Roll-In Pilot Pressure Sensor
When a Fault Occurs in Travel Pilot Pressure Sensor
When a Fault Occurs in Front Pilot Pressure Sensor
When a Fault Occurs in Bucket Roll-In Pilot Pressure Sensor
When a Fault Occurs in Arm Roll-Out Pilot Pressure Sensor
When a Fault Occurs in Bucket Roll-Out Pilot Pressure Sensor
When a Fault Occurs in 5-Spool Pilot Pressure Sensor
When a Fault Occurs in 4-Spool Pilot Pressure Sensor
When a Fault Occurs in Attachment Pilot Pressure Sensor (Option)
When a Fault Occurs in Pump 2 Control Solenoid Valve
When a Fault Occurs in Pump 1 Control Solenoid Valve
When a Fault Occurs in Swing Flow Rate Control Solenoid Valve (SI)
When a Fault Occurs in Maximum Boom Mode Selector Control Solenoid Valve (SF)
When a Fault Occurs in Travel Motor Displacement Angle Solenoid Valve (SC)
When a Fault Occurs in Main Relief Valve Control Solenoid Valve (SF)
When a Fault Occurs in Arm 2 Flow Rate Control Solenoid Valve (SG)
When a Fault Occurs in Arm Regenerative Control Solenoid Valve (SI)
When a Fault Occurs in 4-Spool Bypass Shut-Out Control Solenoid Valve (SG)
When a Fault Occurs in 5-Spool Bypass Shut-Out Control Solenoid Valve (SC)
When a Fault Occurs in Fan Reverse Rotation Control Solenoid Valve
When a Fault Occurs in Fan Pump Control Solenoid Valve
When a Fault Occurs in Main Relief Valve
When a Fault Occurs in Overload Relief Valve
When a Fault Occurs in Boom Anti-Drift Valve
When a Fault Occurs in Arm Rod Anti-Drift Valve
When a Fault Occurs in Flow Combiner Valve
When a Fault Occurs in Boom Regenerative Valve
When a Fault Occurs in Arm Regenerative Valve
When a Fault Occurs in Arm Regeneration Cut Valve
When a Fault Occurs in Bucket Regenerative Valve
When a Fault Occurs in Bucket Regeneration Cut Valve
When a Fault Occurs in Arm 1 Flow Rate Control Valve
When a Fault Occurs in Arm 2 Flow Rate Control Valve
When a Fault Occurs in Swing Flow Rate Control Valve
When a Fault Occurs in Boom Flow Rate Control Valve
When a Fault Occurs in Auxiliary Flow Combiner Valve
When a Fault Occurs in Pump 1 Bypass Shut-Out Valve
When a Fault Occurs in Pump 2 Bypass Shut-Out Valve
When a Fault Occurs in Boom Lower Meter-In Cut Valve
When a Fault Occurs in Travel Motor Displacement Angle Control Valve
When a Fault Occurs in Swing Parking Brake Release Spool
When a Fault Occurs in Arm Flow Rate Control Valve Control Spool
When a Fault Occurs in Flow Combiner Valve Control Spool
Identification Symbol of Troubleshooting B
Correlation between Trouble Symptoms and Part Failures
Parts Related with “E-1 Starter does not rotate.”
Parts Related with “E-2 Even if starter rotates, engine does not start.”
Parts Related with “E-3 Even if power mode switch is operated, power mode is not shifted.”
Parts Related with “E-4 ECO, PWR mode is faulty.”
Parts Related with “E-5 Even if travel lever is single operation with ECO or PWR mode, engine speed does not increase.”
Parts Related with “E-6 Auto-idle system is faulty.”
Parts Related with “E-9 Auto shut-down is not activated.”
Parts Related with “E-12 Engine speed does not decrease when audio mute/one-touch idle switch is pushed.”
Parts Related with “A-1 All actuators do not work.”
Parts Related with “A-2 All actuator speeds are slow.”
Parts Related with “A-3 Actuator does not stop even if control lever is set to neutral.”
Parts Related with “A-4 Auto or manual regeneration of aftertreatment device cannot be performed.”
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.)”
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.)”
Parts Related with “A-11 Fan does not rotate normally.”
Parts Related with A-12 Fan does not rotate in reverse when fan reverse rotation switch is pressed.
Parts Related with “F-1 All front attachment actuator powers are weak.”
Parts Related with “F-2 Front attachment drifts remarkably.”
Parts Related with “F-3 When boom raise or arm roll-out is operated, boom or arm starts to move after moving slightly down.”
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.”
Parts Related with “F-5 Boom, arm, or bucket single operation is not operated. Boom, arm, or bucket single operation speed is slow.”
Parts Related with “F-6 Bucket roll-in speed is slow or power is weak when performing digging operation.”
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.”
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.”
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.”
Parts Related with “F-10 Arm roll-in speed is slow when performing combined operation of arm roll-in and bucket roll-in.”
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.”
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.”
Parts Related with “F-25 Machine is raised off the ground even when boom mode selector switch is pressed.”
Parts Related with “S-1 Swing speed is slow or is not operated.”
Parts Related with “S-2 When starting swing operation, swing speed is fast.”
Parts Related with “S-3 Swing speed is slow when performing combined operation of swing and arm roll-in.”
Parts Related with “T-1 Both of right and left travels are not operated or travel speed is slow.”
Parts Related with “T-2 One side travel is not operated or travel speed is slow. Machine mistracks.”
Parts Related with “T-3 Machine mistracks when performing combined operation of travel and front attachment.”
Parts Related with “T-4 Fast travel can not be selected. Travel mode does not change from slow speed mode to fast speed mode.”
Parts Related with “O-1 Work light does not light.”
Parts Related with “O-2 Cab light does not light.”
Parts Related with “O-3 Wiper is not operated.”
Parts Related with “O-4 Washer is not operated.”
Parts Related with “O-5 Boom light does not light.”
Parts Related with “O-6 Camera image does not change when aerial angle switch is pressed.”
Parts Related with “O-7 Auto-lubrication does not activate when auto-lubrication switch is turned ON.”
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.”
Parts Related with “O-9 Auto-lubrication device stops, and auto-lubrication alarm is displayed.”
E-1 Starter does not rotate.
E-2 Even if starter rotates, engine does not start.
E-3 Even if power mode switch is operated, power mode is not shifted.
E-4 ECO, PWR mode is faulty.
E-5 Even if travel lever is single operation with ECO or PWR mode, engine speed does not increase.
E-6 Auto-idle system is faulty.
E-9 Auto shut-down is not activated.
E-12 Engine speed does not decrease when audio mute/one-touch idle switch is pushed.
A-1 All actuators do not work.
A-2 All actuator speeds are slow.
A-3 Actuator does not stop even if control lever is set to neutral.
A-4 Auto or manual regeneration of aftertreatment device cannot be performed.
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.)
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.)
A-11 Fan does not rotate normally.
A-12 Fan does not rotate in reverse when fan reverse switch is pressed.
F-1 All front attachment actuator powers are weak.
F-2 Front attachment drifts remarkably.
F-3 When boom raise or arm roll-out is operated, boom or arm starts to move after moving slightly down.
F-4 Even if power digging switch is pushed, power does not increase. Boom raise power is weak when performing digging operation.
F-5 Boom, arm, or bucket single operation is not operated. Boom, arm, or bucket single operation speed is slow.
F-6 Bucket roll-in speed is slow or power is weak when performing digging operation.
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.
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.
F-9 Boom lower speed above ground is faster than other actuators when performing combined operation. Machine cannot be raised off the ground.
F-10 Arm roll-in speed is slow when performing combined operation of arm roll-in and bucket roll-in.
F-11 Arm roll-in speed is fast when performing arm level crowding operation. Arm power is weak when performing digging operation.
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.
F-25 Machine is raised off ground even when boom mode selector switch is pressed.
S-1 Swing speed is slow or is not operated.
S-2 When starting swing operation, swing speed is fast.
S-3 Swing speed is slow when performing combined operation of swing and arm roll-in.
T-1 Both of right and left travels are not operated or travel speed is slow.
T-2 One side travel is not operated or travel speed is slow. Machine mistracks.
T-3 Machine mistracks when performing combined operation of travel and front attachment.
T-4 Fast travel can not be selected. Travel mode does not change from slow speed mode to fast speed mode.
O-1 Work light does not light.
O-2 Cab light does not light.
O-3 Wiper is not operated.
O-4 Washer is not operated.
O-5 Boom light does not light.
O-6 Camera image does not change when aerial angle switch is pressed.
O-7 Auto-lubrication does not activate when auto-lubrication switch is turned ON.
O-8 Auto-lubrication does not stop when lubrication time is exceeded. Auto-lubrication does not stop when auto-lubrication switch is turned OFF.
O-9 Auto-lubrication device stops, and auto-lubrication alarm is displayed.
Exchange Inspection
How to Lower Boom in Case of Emergency and When Engine Stops without Hose Rupture Valve
Air Conditioner
Outline of Air Conditioner
Component Layout of Air Conditioner
Functions of Main Electrical Parts
Troubleshooting of Air Conditioner
Monitor Controller (Monitor) Fault Code 13911-3
Monitor Controller (Monitor) Fault Code 13912-4
Monitor Controller (Monitor) Fault Code 13913-3
Monitor Controller (Monitor) Fault Code 13914-4
Monitor Controller (Monitor) Fault Code 13917-3
Monitor Controller (Monitor) Fault Code 13918-4
Monitor Controller (Monitor) Fault Code 13921-3
Monitor Controller (Monitor) Fault Code 13922-4
Monitor Controller (Monitor) Fault Code 13943-2
Monitor Controller (Monitor) Fault Code 13944-2
Monitor Controller (Monitor) Fault Code 13951-2
Monitor Controller (Monitor) Fault Code 13991-2
Monitor Controller (Monitor) Fault Code 13992-2
Faulty Cooling (1)
Faulty Cooling (2)
Faulty Cooling (3)
Faulty Cooling (4)
Faulty Cooling (5)
Faulty Heating (1)
Faulty Heating (2)
Others
Blower motor does not operate.
Compressor clutch does not operate.
Cooling Circuit Check by Using Manifold Gauge
Work after Replacing Components
Refill compressor oil
Necessity of Purging
Procedures for Charging Air Conditioner with Refrigerant
Warm-Up Operation
Hose and Pipe Tightening Torque
SERVICE MANUAL REVISION REQUEST FORM
The Attached Diagram List