The Komatsu PC78UU-11 Crawler Excavator is a tight-tail, mid-size machine you’ll see on utilities, street work, and small demo where space is lousy and uptime matters. The Komatsu PC78UU-11 Crawler Excavator Shop Manual (SEN06960-04) is what shop guys and field techs reach for when something’s broken, not when they’re just changing filters. Most people buying this are trying to chase down fault codes, strip components, or put a rebuilt system back together without guessing.
What this manual helps you do
- Trace hydraulic issues by following the proper test points, flow paths, and likely failure spots in a multi-circuit excavator system.
- Diagnose electrical and electronic problems using wiring information, connector callouts, and the logic of how the control system is supposed to behave.
- Follow teardown and reassembly sequences for major components like the swing system, travel gear, cylinders, and the upper structure.
- Check adjustment procedures for things like control linkages, travel and swing functions, and machine settings after repairs.
- Verify correct inspection steps after a repair so you’re not sending a PC78UU-11 back to the job with a hidden problem waiting to fail.
Who this is for
This is a workshop-level repair manual for field techs, shop mechanics, and serious fleet maintenance people. If you’re an operator or a new owner just wanting daily checks and basic service, you’re really after the Operation & Maintenance Manual, not this one.
FAQ
Q: Is this a PDF I can search and print?
A: Yes, it’s a PDF you can search by keyword and print pages or sections you need in the shop.
Q: Does it go deep enough for full overhauls and major repairs?
A: Yes, this kind of shop manual usually covers diagnostic flow, disassembly, inspection points, and reassembly for major systems on the PC78UU-11.
Q: How do I know if it fits my exact machine variant or serial?
A: You’ll want to match your machine ID plate and documentation to the SEN06960-04 reference; if they don’t line up, you may need a different revision of the shop manual.
Bottom line: If you’re turning wrenches or doing real diagnostics on a Komatsu PC78UU-11, this is the right manual. If you just need operating tips and basic maintenance intervals, keep looking for the O&M book instead.
📘 Show Index
Table of Contents:
- 00 Index and Foreword
- Index
- Foreword, Safety, Basic Information
- How to Read the Shop Manual
- Safety Notice for Operation
- Precautions to Prevent Fire
- Procedures If Fire Occurs
- Precautions for Disposing of Waste Materials
- Precautions When You Handle Hydraulic Equipment
- Precautions When You Disconnect and Connect Pipings
- Precautions When You Handle Electrical Equipment
- Precautions When You Handle Fuel System Equipment
- Precautions When You Handle Intake System Equipment
- Practical Use of KOMTRAX
- Disconnect and Connect Push-Pull Type Coupler
- How to Disconnect and Connect Type 1 Push-Pull Type Coupler
- How to Disconnect and Connect Type 2 Push-Pull Type Coupler
- How to Disconnect and Connect Type 3 Push-Pull Type Coupler
- Precautions for Disconnection and Connection of Connectors
- How to Disconnect and Connect Deutsch Connector
- How to Disconnect and Connect Slide Lock Type Connector
- How to Disconnect and Connect Connector with Lock to Pull
- How to Disconnect and Connect Connector with Lock to Push
- How to Disconnect and Connect Connector with Housing to Rotate
- How to Read the Codes for Electric Cable
- Explanation of Terms for Maintenance Standard
- Standard Tightening Torque Table
- Conversion Table
- Abbreviation List
- 01 Specifications
- Table of Contents
- Specifications
- Specification Drawing
- Specification Drawing: PC78UU-11
- Working Range Drawings
- Working Range Drawings: PC78UU-11
- Specifications
- Specifications: PC78UU-11
- Weight Table
- Fuel, Coolant, Lubricant
- How to Use Fuel, Coolant and Lubricants by Ambient Temperature
- 10 Structure and Function
- Table of Contents
- Boot-up System
- Layout Drawing of Boot-up System
- System Operating Lamp System
- System Diagram of System Operating Lamp System
- Function of Operation Lamp System
- Battery Disconnect Switch
- Function of Battery Disconnect Switch
- Engine System
- Layout Drawing of Engine System
- Engine Control System
- System Diagram of Engine Control
- Function of Engine Control System
- Auto-Deceleration System
- System Diagram of Auto-Deceleration System
- Function of Auto-Deceleration System
- Operation of Auto-Deceleration System
- Engine Automatic Warm-up System
- System Diagram of Engine Automatic Warm-up System
- Function of Engine Automatic Warm-up System
- Overheat Prevention System
- Function of Overheat Prevention System
- Turbocharger Protection System
- Function of Turbocharger Protection System
- Automatic Idle Stop System
- System Diagram of Automatic Idle Stop System
- Function of Automatic Idle Stop System
- Component Parts of Engine System
- PTO
- Turbocharger
- EGR System
- EGR Valve
- EGR Cooler
- High Efficiency Breather System
- High Efficiency Breather
- KDOC
- Cooling System
- Layout Drawing of Cooling System
- Specifications of Cooling System
- Control System
- Layout Drawing of Control System
- Layout Drawing of Control System (Machine with KomVision System)
- Machine Monitor System
- System Diagram of Machine Monitor System
- System Diagram of Machine Monitor System (Machine with KomVision System)
- Function of Machine Monitor System
- KOMTRAX System
- System Diagram of KOMTRAX System
- Function of KOMTRAX System
- KomVision System
- Layout Drawing of KomVision System
- System Diagram of KomVision System
- Function of KomVision System
- Component Parts of Control System
- Machine Monitor
- KomVision Controller
- Gateway Function Controller
- Communication Terminal
- Pump Controller
- Resistor for PC-EPC Valve
- Offset PPC Pressure Reducing EPC Valve Resistor
- Work Equipment Release EPC Valve Resistor
- CAN Terminating Resistor
- Engine Controller
- Fuel Control Dial
- Hydraulic System
- Layout Drawing of Hydraulic System
- CLSS
- Structure of CLSS
- Function of CLSS
- Engine and Pump Combined Control System
- Engine and Pump Combined Control System Diagram
- Function of Engine and Pump Combined Control System
- Component Parts of Hydraulic System
- Hydraulic Tank
- Main Pump
- Control Valve
- Work Equipment System
- Layout Drawing of Work Equipment System
- Structure of Valve Control
- PPC Lock System
- System Diagram of PPC Lock
- Function of PPC Lock System
- Work Equipment and Travel Automatic Lock System
- System Diagram of Lock Lever Automatic Lock System
- Function of Work Equipment and Travel Automatic Lock System
- Operation of Lock Lever Automatic Lock System
- Interference Prevention Device
- Interference Prevention Function for Bucket and CAB
- Interference Prevention Function for Bucket, Right Front External Part, and Step
- Interference Avoidance Function for Bucket and CAB
- Automatic Control Device (UU Mode)
- Function of Set Depth Display Mode
- Function of Boom Height Restriction Mode
- End Cushion Function
- Boom End Cushion Function
- Arm End Cushion Function
- Resetting Function
- Potentiometer Input Signal Resetting Function
- Automatic Stop Position at CAB Front Resetting Function
- Automatic Stop Position at CAB Side Resetting Function
- Automatic Stop Position Resetting Function for Right Front External Part, and Step
- Depth Display Resetting Function
- Attachment Oil Flow Adjuster System
- Attachment Oil Flow Adjuster System Diagram
- Function of Attachment Oil Flow Adjuster System
- Component Parts of Work Equipment System
- Work Equipment and Swing PPC Valve
- Offset PPC Valve (with EPC Valve)
- 1st-Line Attachment PPC Valve (with EPC Valve)
- Blade PPC Valve
- Solenoid Valve
- 4-Spool EPC Solenoid Valve
- Boom Anti-drop Valve
- Arm Anti-Drop Valve
- Offset Cylinder Anti-Drop Valve
- Multi-Control Valve
- Pilot Circuit Accumulator
- Attachment Circuit Accumulator (For Low Pressure Circuit)
- Swing System
- Layout Drawing of Swing System
- Swing Control System Diagram
- Function of Swing Control System
- Component Parts of Swing System
- Swing Motor
- Swing Machinery
- Swing Circle
- Travel System
- Layout Drawing of Travel System
- System Diagram of Travel Control System
- Function of Travel Control System
- Component Parts of Travel System
- Travel Motor
- Travel PPC Valve
- Center Swivel Joint
- Undercarriage and Frame
- Layout Drawing of Undercarriage
- Specifications of Undercarriage
- Idler Cushion
- Structure of Idler Cushion
- Specifications of Idler Cushion
- Work Equipment
- Structure of Work Equipment
- Function of Work Equipment
- Work Equipment Clearance Adjustment Shim
- Function of Work Equipment Clearance Adjustment Shim
- Bucket Clearance Adjustment Shim
- Function of Bucket Clearance Adjustment Shim
- CAB Related Parts
- ROPS CAB
- Structure of ROPS CAB
- Function of ROPS CAB
- CAB Mount
- Structure of CAB Mount
- Function of CAB Mount
- Remove Wiring Harness Out of Cab
- 20 Standard Value Table
- Table of Contents
- Standard Value Table for Engine
- Standard Value Table for Engine: PC78UU-11
- Standard Value Table for Machine
- Standard Value Table for Machine: PC78UU-11
- Machine Posture and Procedures to Measure Performance
- 30 Testing and Adjusting
- Table of Contents
- Precautions Before Work
- Related Information on Testing and Adjusting
- Tools for Testing and Adjusting
- Sketch of Tools for Testing and Adjusting
- Engine and Cooling System
- Examine Engine Speed
- How to Examine Engine Speed
- Examine Exhaust Gas Color
- How to Examine Exhaust Gas Color with the Handy Smoke Checker
- How to Examine Exhaust Gas Color with Smoke Meter
- Examine Mass Air Flow and Temperature Sensor
- How to Examine Mass Air Flow and Temperature Sensor
- Examine and Adjust Valve Clearance
- How to Examine Valve Clearance
- How to Adjust Valve Clearance
- Examine Compression Pressure
- How to Examine Compression Pressure
- Examine Blowby Pressure
- How to Examine Blowby Pressure
- Examine Engine Oil Pressure
- How to Examine Engine Oil Pressure
- Visual Check Inside of EGR Valve
- How to do the Visual Check Inside of EGR Valve
- Clean Inside of EGR Valve
- How to Clean Inside of EGR Valve
- Examine Fuel Pressure
- How to Examine Fuel Pressure
- Examine Fuel Return Rate and Leakage
- How to Examine Fuel Return Rate and Leakage
- Bleed Air from Fuel System
- How to Bleed Air from Fuel System
- Examine Fuel Circuit for Leakage
- How to Examine Fuel Circuit for Leakage
- Handle Cylinder Cut-out Mode Operation
- Handle No-Injection Cranking Operation
- Examine Fan Belt
- Examine Automatic Tensioner
- How to Examine Automatic Tensioner
- Write Injector Compensation Value to Engine Controller
- How to Write Injector Compensation Value
- Power Train
- Examine Swing Circle Bearing Clearance
- How to Examine Swing Circle Bearing Clearance
- Undercarriage and Frame
- Examine and Adjust Track Tension
- How to Examine Track Tension
- How to Adjust Track Tension
- Hydraulic System
- Release Remained Pressure in Hydraulic Circuit
- How to Release Remained Pressure from Hydraulic Tank
- How to Release Remained Pressure in Hydraulic Cylinder Circuit
- How to Release Remained Pressure from Swing Motor Circuit
- How to Release Remained Pressure from Travel Motor Circuit
- Examine and Adjust Oil Pressure in Work Equipment and Travel Circuits
- How to Examine Oil Pressure in Work Equipment and Travel Circuits
- How to Adjust Oil Pressure in Work Equipment and Travel Circuits
- How to Adjust Work Equipment and Travel Relief Pressure
- Examine and Adjust Blade Circuit Oil Pressure
- How to Examine Blade Relief Pressure
- Adjust Swing Relief Pressure
- Adjust Blade LOWER Relief Pressure
- How to Adjust Blade RAISE Relief Pressure
- Examine Oil Pressure of Control Circuit
- How to Examine Oil Pressure in Control Circuit
- Examine and adjust oil pressure in pump PC control circuit
- How to Examine PC Valve Outlet Pressure (Servo Piston Inlet Pressure)
- Examine Source Pressure of PC-EPC Valve
- Examine PC-EPC Valve Output Pressure
- How to Adjust Oil Pressure in Pump PC Control Circuit
- Examine and Adjust Oil Pressure in Pump LS Control Circuit
- How to Examine LS Differential Pressure with Machine Monitor
- How to Examine LS Differential Pressure by Testing Tool
- How to Adjust LS Valve
- Examine Outlet Pressure of Solenoid Valve
- How to Examine Outlet Pressure of Solenoid Valve
- Operating Condition of Solenoid Valve
- Examine PPC Valve Outlet Pressure
- How to Examine PPC Valve Outlet Pressure
- Examine and Adjust Travel Deviation
- How to Examine Travel Deviation
- How to Adjust Travel Deviation
- Adjust Play of Work Equipment and Swing PPC Valves
- How to Adjust Play of Work Equipment and Swing PPC Valves
- Examine Parts Which Cause Hydraulic Drift of Work Equipment
- How to Examine Parts Which Cause Hydraulic Drift of Boom Cylinder and Bucket Cylinder
- How to Examine the Parts Which Cause Hydraulic Drift of Arm Cylinder
- How to Examine Parts that Cause Hydraulic Drift of PPC Valve
- Examine Oil Leakage
- How to Examine Oil Leakage from Boom Cylinder
- How to Examine Oil Leakage from Arm Cylinder
- How to Examine Oil Leakage from Bucket Cylinder
- How to Examine Oil Leakage from Offset Cylinder
- How to Examine Oil Leakage from Blade Cylinder
- How to Examine Oil Leakage from Swing Motor
- How to Examine Oil Leakage from Travel Motor
- Bleed Air from Hydraulic System
- How to Bleed Air from Hydraulic Circuit
- Electrical System
- Set and Operate Machine Monitor
- Operator Mode
- Function to Show Technician Identification Status Screen
- Function to Show Operator Identification Input Screen
- Examine Function by LCD (Liquid Crystal Display)
- Examine Function of Service Meter
- Usage Limitation and Maintenance Password Change Function
- Service Mode
- How to Operate Service Mode
- How to See Pre-defined Monitoring Information
- How to Examine Monitoring Information
- Abnormality Record Menu
- How to See Maintenance Record
- Maintenance Mode Setting
- How to Set Phone Number Entry
- Default Setting Menu
- Testing Menu
- Adjustment Menu
- UU Settings Menu
- No-Injection Cranking Operation
- KOMTRAX Settings Menu
- How to Show Service Message
- How to Start Up KOMTRAX System
- Adjust KomVision Camera Angle
- How to Adjust KomVision Camera Angle
- Adjust KomVision Related Function
- Setting of KomVision (Main Setting)
- Setting of KomVision (Camera Setting)
- Setting of KomVision (Camera Calibration)
- Setting of KomVision (Human Detection Warning System)
- Set Region of Bluetooth(R) Compatible Radio
- How to Set Region of Bluetooth(R) Compatible Radio
- Handle Voltage Circuit of Engine Controller
- Handle Battery Disconnect Switch
- Examine Diodes
- How to Examine Diodes by Digital Tester
- How to Examine Diodes by Analog Tester
- Pm Clinic
- Pm Clinic Service
- Pm Clinic Check Sheet: PC78UU-11
- 40 Troubleshooting
- Table of Contents
- Precautions Before Work
- Related Information to Troubleshooting
- General Troubleshooting Points
- Sequence of Events in Troubleshooting
- Checks Before Troubleshooting
- Inspection Procedure Before Troubleshooting
- Test in Accordance with Testing Procedure
- Examine Fuel Level and Type
- Examine Fuel Prefilter
- Examine Water Separator, Drain Water and Sediment
- How to Replace Fuel Prefilter Cartridge
- Examine Fuel Main Filter
- Examine Water Pump for Leakage
- Examine Engine Oil Level (Oil Quantity in Oil Pan)
- Examine Oil Level in PTO Gear Case
- Examine Coolant Level (Expansion Tank)
- Examine Air Cleaner Clogging
- Clean Outer Element
- Replace Element
- Examine Hydraulic Oil Level
- Examine Hydraulic Oil Strainer
- Examine Hydraulic Oil Filter
- Examine Oil Level in Swing Machinery Case
- Examine Oil Level in Final Drive Case
- Bleed Air from Fuel System
- Bleed Air from Hydraulic System
- How to Examine Electric Equipment
- Preparation for Troubleshooting of Electrical System
- Preparation for Troubleshooting of Machine Monitor
- Preparation for Troubleshooting of Engine Controller
- Preparation for Troubleshooting of Pump Controller
- Preparation for Troubleshooting of KomVision Controller
- Preparation for Troubleshooting of Gateway Function Controller
- How to Disconnect and Connect Connector with a Special Lock
- Procedure for Troubleshooting
- Symptom and Troubleshooting Numbers
- Information Shown in Troubleshooting Table
- How to Diagnose Wiring Harness for Open Circuit of Pressure Sensor System
- Connectors List
- Connector Layout
- Connector Layout (1)
- Connector Layout (2)
- Connector Layout (3)
- Connector Layout (4)
- Connector Contact Connection Table
- T-Branch Box and T-Branch Adapter Table
- Fuse Location Table
- Failure Code Table
- Troubleshooting by Failure Code (Display of Code)
- Failure Code [879AKA]
- Failure Code [879AKB]
- Failure Code [879BKA]
- Failure Code [879BKB]
- Failure Code [879CKA]
- Failure Code [879CKB]
- Failure Code [879DKZ]
- Failure Code [879EMC]
- Failure Code [879FMC]
- Failure Code [879GKX]
- Failure Code [989H00]
- Failure Code [989HKM]
- Failure Code [989L00]
- Failure Code [989M00]
- Failure Code [989N00]
- Failure Code [A900FR]
- Failure Code [A900N6]
- Failure Code [A900NY]
- Failure Code [AA10NX]
- Failure Code [AB00KE]
- Failure Code [B@BAZG]
- Failure Code [B@BCNS]
- Failure Code [B@BCQA]
- Failure Code [B@BCZK]
- Failure Code [B@HANS]
- Failure Code [CA115]
- Failure Code [CA122]
- Failure Code [CA123]
- Failure Code [CA131]
- Failure Code [CA132]
- Failure Code [CA144]
- Failure Code [CA145]
- Failure Code [CA153]
- Failure Code [CA154]
- Failure Code [CA187]
- Failure Code [CA221]
- Failure Code [CA222]
- Failure Code [CA227]
- Failure Code [CA234]
- Failure Code [CA238]
- Failure Code [CA239]
- Failure Code [CA271]
- Failure Code [CA272]
- Failure Code [CA322]
- Failure Code [CA324]
- Failure Code [CA331]
- Failure Code [CA343]
- Failure Code [CA351]
- Failure Code [CA352]
- Failure Code [CA356]
- Failure Code [CA357]
- Failure Code [CA386]
- Failure Code [CA435]
- Failure Code [CA441]
- Failure Code [CA442]
- Failure Code [CA449]
- Failure Code [CA451]
- Failure Code [CA452]
- Failure Code [CA515]
- Failure Code [CA516]
- Failure Code [CA553]
- Failure Code [CA559]
- Failure Code [CA689]
- Failure Code [CA691]
- Failure Code [CA692]
- Failure Code [CA697]
- Failure Code [CA698]
- Failure Code [CA731]
- Failure Code [CA778]
- Failure Code [CA1117]
- Failure Code [CA1896]
- Failure Code [CA1961]
- Failure Code [CA2185]
- Failure Code [CA2186]
- Failure Code [CA2249]
- Failure Code [CA2272]
- Failure Code [CA2311]
- Failure Code [CA2349]
- Failure Code [CA2353]
- Failure Code [CA2357]
- Failure Code [CA2765]
- Failure Code [CA2973]
- Failure Code [CA3419]
- Failure Code [CA3421]
- Failure Code [CA3724]
- Failure Code [CA4264]
- Failure Code [CA4952]
- Failure Code [D110KB]
- Failure Code [D19JKZ]
- Failure Code [D1EVKA]
- Failure Code [D1EVKB]
- Failure Code [D1EVKY]
- Failure Code [D1EVMA]
- Failure Code [D811MC]
- Failure Code [D862KA]
- Failure Code [D8ALKA]
- Failure Code [D8ALKB]
- Failure Code [D8AQKR]
- Failure Code [D8G1KT]
- Failure Code [D8G6KT]
- Failure Code [DA20MC]
- Failure Code [DA22KK]
- Failure Code [DA22KT]
- Failure Code [DA25KP]
- Failure Code [DA26KP]
- Failure Code [DA29KQ]
- Failure Code [DA2JKT]
- Failure Code [DA2JKY]
- Failure Code [DA2LKA]
- Failure Code [DA2LKB]
- Failure Code [DA2QKR]
- Failure Code [DA2RKR]
- Failure Code [DAF0KM]
- Failure Code [DAF0MB]
- Failure Code [DAF0MC]
- Failure Code [DAF9KQ]
- Failure Code [DAFGMC]
- Failure Code [DAFLKA]
- Failure Code [DAFLKB]
- Failure Code [DAFQKR]
- Failure Code [DAZ9KQ]
- Failure Code [DAZQKR]
- Failure Code [DB2QKR]
- Failure Code [DB2RKR]
- Failure Code [DBP0KM]
- Failure Code [DBP0KT]
- Failure Code [DBP5KB]
- Failure Code [DBP5KY]
- Failure Code [DBPQKR]
- Failure Code [DDNRKA]
- Failure Code [DDNRKY]
- Failure Code [DDNS00]
- Failure Code [DGH2KA]
- Failure Code [DGH2KB]
- Failure Code [DHA4KA]
- Failure Code [DHPAMA]
- Failure Code [DHS3MA]
- Failure Code [DHS4MA]
- Failure Code [DHS5MA]
- Failure Code [DHS8MA]
- Failure Code [DHS9MA]
- Failure Code [DHSAMA]
- Failure Code [DHSBMA]
- Failure Code [DHSCMA]
- Failure Code [DHSDMA]
- Failure Code [DHSRMA]
- Failure Code [DHSSMA]
- Failure Code [DKA0KA]
- Failure Code [DKA0KB]
- Failure Code [DKA0PH]
- Failure Code [DKC0KA]
- Failure Code [DKC0KB]
- Failure Code [DKC0PH]
- Failure Code [DKP0KA]
- Failure Code [DKP0KB]
- Failure Code [DKP0PH]
- Failure Code [DKR0MA]
- Failure Code [DKULKA]
- Failure Code [DKULKB]
- Failure Code [DKULKY]
- Failure Code [DLM5KA]
- Failure Code [DLM5MB]
- Failure Code [DR10KA]
- Failure Code [DR12KA]
- Failure Code [DR30KA]
- Failure Code [DR40KA]
- Failure Code [DUMBKA]
- Failure Code [DUMBKB]
- Failure Code [DV20KB]
- Failure Code [DW43KA]
- Failure Code [DW43KB]
- Failure Code [DW43KY]
- Failure Code [DW45KA]
- Failure Code [DW45KB]
- Failure Code [DW45KY]
- Failure Code [DW4CKY]
- Failure Code [DW4GKA]
- Failure Code [DW4GKB]
- Failure Code [DW4GKY]
- Failure Code [DW4HKA]
- Failure Code [DW4HKB]
- Failure Code [DW4HKY]
- Failure Code [DWA2KA]
- Failure Code [DWA2KB]
- Failure Code [DWA2KY]
- Failure Code [DWJ0KA]
- Failure Code [DWJ0KB]
- Failure Code [DWJ0KY]
- Failure Code [DWN5KA]
- Failure Code [DWN5KB]
- Failure Code [DWN5KY]
- Failure Code [DXA8KA]
- Failure Code [DXA8KB]
- Failure Code [DXE4KA]
- Failure Code [DXE4KB]
- Failure Code [DXE4KY]
- Failure Code [DXEBKA]
- Failure Code [DXEBKB]
- Failure Code [DXEBKY]
- Failure Code [DXEFKA]
- Failure Code [DXEFKB]
- Failure Code [DXEFKY]
- Failure Code [DY20KA]
- Failure Code [DY20MA]
- Failure Code [DY2CKB]
- Failure Code [DY2DKB]
- Failure Code [DY2EKB]
- Failure code [F311KA]
- Failure code [F311KB]
- Failure code [F312KA]
- Failure code [F312KB]
- Failure Code [F313KA]
- Failure Code [F313KB]
- Failure code [F314KA]
- Failure code [F314KB]
- Failure Code [F315KB]
- Failure Code [F315KY]
- Failure code [F316KB]
- Failure code [F316KY]
- Failure Code [F318KB]
- Failure Code [F318KY]
- Failure code [F31AKB]
- Failure code [F31AKY]
- Failure Code [F31BKB]
- Failure Code [F31BKY]
- Failure Code [F31CKB]
- Failure Code [F31CKY]
- Failure Code [F31DKB]
- Failure Code [F31DKY]
- Failure Code [F31EKB]
- Failure Code [F31EKY]
- Failure Code [FS10ZE]
- Troubleshooting of Electrical System (E-Mode)
- Engine Does Not Start (Engine Does Not Crank)
- Manual Preheating System Does Not Operate
- While Preheating is in Operation, Preheating Monitor Does Not Come On
- When Starting Switch is Turned to ON Position, Machine Monitor Shows Nothing
- Engine Coolant Temperature Monitor Comes On in White While Engine is in Operation
- Hydraulic Oil Temperature Monitor Comes On in White While Engine is in Operation
- Charge Level Monitor Comes On in Red While Engine is in Operation
- Fuel Level Monitor Comes On in Red While Engine is in Operation
- Engine Coolant Temperature Monitor Comes On in Red While Engine is in Operation
- Engine Oil Pressure Monitor Comes On in Red While Engine is in Operation
- Hydraulic Oil Temperature Monitor Comes On in Red While Engine is in Operation
- Fuel Gauge Does Not Move from Minimum or Maximum
- Display of Fuel Gauge is Different from Actual Fuel Level
- Coolant Temperature Gauge Display Does Not Move from Minimum or Maximum
- Display of Coolant Temperature Gauge is Different from Actual Coolant Temperature
- Hydraulic Oil Temperature Gauge Does Not Move from Minimum or Maximum
- Display of Hydraulic Oil Temperature Gauge is Different from Actual Oil Temperature
- Some Areas of Machine Monitor Screen are Not Shown
- Function Switch Does Not Operate
- Automatic Warm-up System Does Not Operate (in Cold Weather)
- Auto-Deceleration Monitor Does Not Come On or Go Out While Auto-Deceleration Switch is Operated
- Auto-Decelerator is Not Operated or Canceled with Lever
- Work Mode Selector Screen is Not Shown While Work Mode Switch is Operated
- Boom Raising Does Not Automatically Stop Correctly and It Interferes (CAB Side)
- Arm IN Does Not Automatically Stop Correctly and It Interferes (CAB Side)
- Offset Left Does Not Automatically Stop Correctly and It Interferes (CAB Side)
- Boom LOWER Does Not Automatically Stop Correctly and It Interferes (Right Exterior Side)
- Arm IN Does Not Automatically Stop Correctly and It Interferes (Right External Side)
- Offset Right Does Not Automatically Stop Correctly and It Interferes (Right Exterior Side)
- Work Equipment Stop Position is Too Far or Near
- Cushion for Boom Raise End Does Not Work or is Weak
- Cushion for Arm IN End Does Not Work or is Weak
- When Automatic Interference Avoidance Function Is "ON", Boom Stops Within Range of Automatic Stop in Boom RAISE Operation
- When Automatic Interference Avoidance Function Is "ON", Arm Movement is Large on Automatic Interference Avoidance Surface
- When Automatic Interference Avoidance Function Is "ON", Arm Hits Ground in Boom RAISE Operation While Arm is Retracted
- Boom Does Not Rise in Boom RAISE Operation While Work Equipment Lock Release Switch is on
- Arm is Not Retracted in Arm IN Operation While Work Equipment Lock Release Switch is on
- Left Offset Does Not Operate in Offset Left Operation While Work Equipment Lock Release Switch is on
- At the Height Restriction, Machine Stops Past Excessive the Restriction or Stops Short of It
- Depth Indication Departs or Does Not Show
- Buzzer Sounds for 7 Seconds Even If the Work Equipment Lock Release Switch is Not Turned ON
- When the Work Equipment Lock Release Switch is Turned ON, the Work Equipment Lock Pilot Lamp Does Not Come On
- When Working Mode is Changed, Setting of Engine and Hydraulic Pump is Not Changed
- Travel Speed Monitor Does Not Change While Travel Speed Switch is Operated
- Travel Speed Does Not Change Even When You Change Travel Speed
- Alarm Buzzer Does Not Stop
- Service Meter is Not Shown While Starting Switch is in OFF Position
- Service Mode Cannot be Selected
- All Work Equipment, Swing, Travel Do Not Operate
- All Work Equipment, Swing, Travel Cannot be Locked
- Machine Does Not Swing While Swing Parking Brake Release Switch is Set to Release Position
- While Swing Parking Brake Release Switch is Turned on, Swing Brake is Not Operated
- Work Equipment Does Not Operate While Work Equipment Lock Release Switch is on
- Travel Alarm Does Not Make Sound
- Travel Alarm Does Not Stop When Machine Stops
- Travel Alarm Operates While Travel Alarm Cancel Switch is Pushed
- Horn Does Not Sound
- Horn Does Not Stop
- Wiper Monitor Does Not Come On or Go Out While Wiper Switch is Operated
- Wiper Does Not Operate When Wiper Switch is Operated
- When Window Washer Switch is Operated, Window Washer Does Not Operate
- "Boom Raise" is Not Shown Correctly with Monitoring Function
- "Boom Lower" is Not Shown Correctly with Monitoring Function
- "Arm OUT" is Not Shown Correctly with Monitoring Function
- "Arm IN" is Not Shown Correctly with Monitoring Function
- Bucket DUMP is Not Shown Correctly with Monitoring Function
- Bucket CURL is Not Shown Correctly with Monitoring Function
- Offset Left is Not Shown Correctly with Monitoring Function
- Offset Right is Not Shown Correctly with Monitoring Function
- Swing is Not Shown Correctly with Monitoring Function
- Travel is Not Shown Correctly with Monitoring Function
- Service is Not Shown Correctly with Monitoring Function
- Blade RAISE is Not Shown Correctly with Monitoring Function
- Blade LOWER is Not Shown Correctly with Monitoring Function
- KOMTRAX System Does Not Operate Correctly
- Troubleshooting for Hydraulic and Mechanical Systems (H Mode)
- Information Shown in Troubleshooting Table (H-Mode)
- Failure Mode and Cause Table
- All Work Equipment, Swing and Travel Do Not Work
- All Work Equipment, Swing, and Travel Lack Speed or Power
- Fine Control Performance or Response is Unsatisfactory
- Unusual Noise is Heard from Around Hydraulic Pump
- Engine Speed Drops Largely or Engine Stops
- Boom Speed or Power is Low
- Arm Speed or Power is Low
- Bucket Speed or Power is Low
- Blade Speed or Power is Low
- Offset Speed or Power is Low
- Work Equipment Does Not Move in Single Operation
- Hydraulic Drift of Boom is Large
- Hydraulic Drift of Arm is Large
- Hydraulic Drift of Bucket is Large
- Hydraulic Drift of Offset is Large
- Hydraulic Drift of Blade is Large
- When Single Work Equipment is Released Hydraulically, Other Work Equipment Moves
- Boom RAISE and LOWER, Arm IN, or Offset Right and Left Does Not Automatically Stop and It Interfere
- Time Lag of Work Equipment is Large
- Attachment Circuit Cannot be Changed
- Oil Flow in Attachment Circuit Cannot be Changed
- In Mixed Operation of Work Equipment, Work Equipment with Heavier Load Moves Slower
- In Mixed Operation of Work Equipment or Swing and Travel, Travel Speed Falls Largely
- In Mixed Operation of Swing and Boom RAISE, Boom RAISE Speed is Low
- Machine Does Not Travel Straight
- Machine is Not Steered Well or Steering Power is Low
- Travel Speed is Low
- One of Tracks Does Not Run
- Travel Speed Does Not Change, or Travel Speed is Too Slow or Fast
- Upper Structure Does Not Swing to Right or Left
- Machine Swings Only in One Direction
- Swing Acceleration or Swing Speed is Low in Two Directions of Right and Left
- Swing Acceleration or Swing Speed is Low in Only One Direction
- Upper Structure Overruns Too Much When It Stops Swing Operation (Right and Left)
- Upper Structure Overruns Too Much When It Stops Swing Operation (Only One Direction)
- Shock is Large When Upper Structure Stops Swing Operation
- Large Unusual Noise is Made When Upper Structure Stops Swing Operation
- Swing Drift on a Slope is Large (While Swing Parking Brake is Applied)
- Swing Drift on a Slope is Large (While Swing Parking Brake is Released)
- Fan Speed is Abnormal (Too High or Low, or Does Not Rotate)
- Unusual Noise is Heard from Around Fan
- Troubleshooting of Engine (S-Mode)
- Information Shown in Troubleshooting Table (S-Mode)
- Engine Does Not Crank When Starting Switch is Turned to Start Position
- Engine Cranks but No Exhaust Smoke Comes Out
- Fuel is Sprayed but Engine Does Not Start (Misfiring: Engine Cranks but Does Not Start)
- Engine Startability is Unsatisfactory
- Engine Does Not Pick Up Smoothly
- Engine Stops During Operation
- Engine Does Not Rotate Smoothly
- Engine Lacks Output (or Lacks Power)
- Exhaust Color is Black
- Engine Oil Consumption is Excessive
- Engine Oil Becomes Dirty Quickly
- Fuel Consumption is Excessive
- Oil is in Coolant (or Coolant Spurts Back or Coolant Level Goes Down)
- Engine Oil Pressure Drops
- Fuel Mixes Into Engine Oil
- Water Mixes Into Engine Oil (Milky)
- Coolant Temperature Increases Too High (Overheat)
- Unusual Noise is Heard
- Vibration is Excessive
- Air Cannot be Bled from Fuel Circuit
- 50 Disassembly and Assembly
- Table of Contents
- Precautions Before Work
- Related Information on Disassembly and Assembly
- How to Read This Manual
- Coating Materials List
- Special Tool List
- Sketches of Special Tools
- Prepare
- Drain and Add Coolant
- How to Drain Coolant
- How to Add Coolant
- Drain and Add Hydraulic Oil
- How to Drain Hydraulic Oil
- How to Add Hydraulic Oil
- Drain and Add Fuel
- How to Drain Fuel
- How to Add Fuel
- Collect and Refill Refrigerant
- How to Collect Refrigerant
- How to Refill Refrigerant
- Engine and Cooling System
- Remove and Install Supply Pump Assembly
- How to Remove Supply Pump Assembly
- How to Install Supply Pump Assembly
- Remove and Install Injector Assembly
- How to Remove Injector Assembly
- How to Install Injector Assembly
- Remove and Install Cylinder Head Assembly
- How to Remove Cylinder Head Assembly
- How to Install Cylinder Head Assembly
- Remove and Install EGR Valve Assembly
- How to Remove EGR Valve Assembly
- How to Install EGR Valve Assembly
- Remove and Install EGR Cooler Assembly
- How to Remove EGR Cooler Assembly
- How to Install EGR Cooler Assembly
- Remove and Install Starting Motor Assembly
- How to Remove Starting Motor Assembly
- How to Install Starting Motor Assembly
- Remove and Install Fan Belt
- How to Remove Fan Belt
- How to Install Fan Belt
- Remove and Install Automatic Tensioner
- How to Remove Auto-Tensioner
- How to Install Auto-Tensioner
- Remove and Install Expansion Tank Assembly
- How to Remove Expansion Tank Assembly
- How to Install Expansion Tank Assembly
- Remove and Install Radiator Assembly
- How to Remove Radiator Assembly
- How to Install Radiator Assembly
- Remove and Install Hydraulic Oil Cooler Assembly
- How to Remove Hydraulic Oil Cooler Assembly
- How to Install Hydraulic Oil Cooler Assembly
- Remove and Install Aftercooler Assembly
- How to Remove Aftercooler Assembly
- How to Install Aftercooler Assembly
- Remove and Install Engine and Main Pump Assembly
- How to Remove Engine and Main Pump Assembly
- How to Install Engine and Main Pump Assembly
- Remove and Install Engine Front Oil Seal
- How to Remove Engine Front Oil Seal
- How to Install Engine Front Oil Seal
- Remove and Install Engine Rear Oil Seal
- How to Remove Engine Rear Oil Seal
- How to Install Engine Rear Oil Seal
- Remove and Install Fuel Cooler Assembly
- How to Remove Fuel Cooler Assembly
- How to Install Fuel Cooler Assembly
- Remove and Install Engine Hood Assembly
- How to Remove Engine Hood Assembly
- How to Install Engine Hood Assembly
- Remove and Install KDOC Assembly
- How to Remove KDOC Assembly
- How to Install KDOC Assembly
- Remove and Install Fuel Tank Assembly
- How to Remove Fuel Tank Assembly
- How to Install Fuel Tank Assembly
- Remove and Install Air Cleaner Assembly
- How to Remove Air Cleaner Assembly
- How to Install Air Cleaner Assembly
- Remove and Install Air Conditioner Compressor Assembly
- How to Remove Air Conditioner Compressor Assembly
- How to Install Air Conditioner Compressor Assembly
- Remove and Install Air Conditioner Condenser Assembly
- How to Remove Air Conditioner Condenser Assembly
- How to Install Air Conditioner Condenser Assembly
- Power Train
- Remove and Install Travel Motor and Final Drive Assembly
- How to Remove Travel Motor and Final Drive Assembly
- How to Install Travel Motor and Final Drive Assembly
- Disassemble and Assemble Travel Motor and Final Drive Assembly
- How to Disassemble Travel Motor and Final Drive Assembly
- How to Assemble Travel Motor and Final Drive Assembly
- Remove and Install Swing Motor and Swing Machinery Assembly
- How to Remove Swing Motor and Swing Machinery Assembly
- How to Install Swing Motor and Swing Machinery Assembly
- Disassemble and Assemble Swing Machinery Assembly
- How to Disassemble Swing Machinery Assembly
- How to Assemble Swing Machinery Assembly
- Remove and Install Swing Circle Assembly
- How to Remove Swing Circle Assembly
- How to Install Swing Circle Assembly
- Undercarriage and Frame
- Separate and Connect Track Assembly
- How to Separate Track Assembly
- How to Install Track Assembly
- Remove and Install Sprocket
- How to Remove Sprocket
- How to Install Sprocket
- Remove and Install Idler and Idler Cushion Assembly
- How to Remove Idler and Idler Cushion Assembly
- How to Install Idler and Idler Cushion Assembly
- Disassemble and Assemble Idler Assembly
- How to Disassemble Idler Assembly
- How to Assemble Idler Assembly
- Disassemble and Assemble Idler Cushion Assembly
- How to Disassemble Idler Cushion Assembly
- How to Assemble Idler Cushion Assembly
- Disassemble and Assemble Track Roller Assembly
- How to Disassemble Track Roller Assembly
- How to Assemble Track Roller Assembly
- Remove and Install Revolving Frame Assembly
- How to Remove Revolving Frame Assembly
- How to Install Revolving Frame Assembly
- Remove and Install Counterweight Assembly
- How to Remove Counterweight Assembly
- How to Install Counterweight Assembly
- Hydraulic System
- Remove and Install Center Swivel Joint Assembly
- How to Remove Center Swivel Joint Assembly
- How to Install Center Swivel Joint Assembly
- Disassemble and Assemble Center Swivel Joint Assembly
- How to Disassemble Center Swivel Joint Assembly
- How to Assemble Center Swivel Joint Assembly
- Remove and Install Hydraulic Tank Assembly
- How to Remove Hydraulic Tank Assembly
- How to Install Hydraulic Tank Assembly
- Remove and Install Main Pump Assembly
- How to Remove Main Pump Assembly
- How to Install Main Pump Assembly
- Remove and Install Control Valve Assembly
- How to Remove Control Valve Assembly
- How to Install Control Valve Assembly
- Disassemble and Assemble Control Valve Assembly
- How to Assemble Control Valve Assembly
- How to Replace Pressure Reducing Valve Cartridge Assembly
- Disassemble and Assemble Work Equipment PPC Valve Assembly
- How to Disassemble Work Equipment PPC Valve Assembly
- How to Assemble Work Equipment PPC Valve Assembly
- Disassemble and Assemble Travel PPC Valve Assembly
- How to Disassemble Travel PPC Valve Assembly
- How to Assemble Travel PPC Valve Assembly
- Work Equipment
- Remove and Install Blade Assembly
- How to Remove Blade Assembly
- How to Install Blade Assembly
- Remove and Install Work Equipment Assembly
- How to Remove Work Equipment Assembly
- How to Install Work Equipment Assembly
- Remove and Install 1st Boom Assembly
- How to Remove 1st Boom Assembly
- How to Install 1st Boom Assembly
- Remove and Install 2nd Boom Assembly
- How to Remove 2nd Boom Assembly
- How to Install 2nd Boom Assembly
- Remove and Install 3rd Bracket Assembly
- How to Remove 3rd Bracket Assembly
- How to Install 3rd Bracket Assembly
- Remove and Install Boom Anti-Drop Valve Assembly
- How to Remove Boom Anti-Drop Valve Assembly
- How to Install Boom Anti-Drop Valve Assembly
- Remove and Install Arm Anti-Drop Valve Assembly
- How to Remove Arm Anti-Drop Valve Assembly
- How to Install Arm Anti-Drop Valve Assembly
- Remove and Install Offset Anti-Drop Valve Assembly (Head Side)
- How to Remove Offset Anti-Drop Valve Assembly (Head Side)
- How to Install Offset Anti-Drop Valve Assembly (Head Side)
- Remove and Install Offset Anti-Drop Valve Assembly (Bottom Side)
- How to Remove Offset Anti-Drop Valve Assembly (Bottom Side)
- How to Install Offset Anti-Drop Valve Assembly (Bottom Side)
- Disassemble and Assemble Anti-Drop Valve Assembly
- How to Disassemble Anti-Drop Valve Assembly
- How to Assemble Anti-Drop Valve Assembly
- Remove and Install Boom Potentiometer Assembly
- How to Remove Boom Potentiometer Assembly
- How to Install Boom Potentiometer Assembly
- Remove and Install Arm Potentiometer Assembly
- How to Remove Arm Potentiometer Assembly
- How to Install Arm Potentiometer Assembly
- Remove and Install Offset Potentiometer Assembly
- How to Remove Offset Potentiometer Assembly
- How to Install Offset Potentiometer Assembly
- Disassemble and Assemble Work Equipment Cylinder Assembly
- How to Disassemble Work Equipment Cylinder Assembly
- How to Assemble Work Equipment Cylinder Assembly
- CAB Related Parts
- Remove and Install Operator Cab Assembly
- How to Remove Operator Cab Assembly
- How to Install Operator Cab Assembly
- Remove and Install Operator Cab Door
- How to Install Operator Cab Door
- Remove and Install Operator Cab Glass (Adhered Glass)
- How to Remove Operator Cab Glass (Adhered Glass)
- How to Install Operator Cab Glass (Adhered Glass)
- Remove and Install Front Window Assembly
- How to Remove Front Window Assembly
- How to Install Front Window Assembly
- Remove and Install Floor Frame Assembly
- How to Remove Floor Frame Assembly
- How to Install Floor Frame Assembly
- Remove and Install Air Conditioner Unit Assembly
- How to Remove Air Conditioner Unit Assembly
- How to Install Air Conditioner Unit Assembly
- Remove and Install Operator Seat
- How to Remove Operator Seat
- How to Install Operator Seat
- How to Remove and Install Seat Belt
- How to Remove Seat Belt
- How to Install Seatbelt
- Remove and Install Work Equipment Control Lever Assembly
- How to Remove Work Equipment Control Lever Assembly
- How to Install Work Equipment Control Lever Assembly
- Remove and Install Front Wiper Assembly
- How to Remove Front Wiper Assembly
- How to Install Front Wiper Assembly
- Electrical System
- Remove and Install Engine Controller Assembly
- How to Remove Engine Controller Assembly
- How to Install Engine Controller Assembly
- Remove and Install Pump Controller Assembly
- How to Remove Pump Controller Assembly
- How to Install Pump Controller Assembly
- Remove and Install KomVision Controller Assembly
- How to Remove KomVision Controller Assembly
- How to Install KomVision Controller Assembly
- Remove and Install Machine Monitor Assembly
- How to Remove Machine Monitor Assembly
- How to Install Machine Monitor Assembly
- Remove and Install Mass Air Flow and Temperature Sensor
- How to Remove Mass Air Flow and Temperature Sensor
- How to Install Mass Air Flow and Temperature Sensor
- Remove and Install KomVision Camera
- How to Remove KomVision Camera
- How to Install KomVision Camera
- Remove and Install Gateway Function Controller
- How to Remove Gateway Function Controller
- How to Install Gateway Function Controller
- Remove and Install Communication Terminal
- How to Remove Communication Terminal
- How to Install Communication Terminal
- 60 Maintenance Standard
- Table of Contents
- Engine and Cooling System
- Maintenance Standard for Engine Mount
- Maintenance Standard for PTO
- Maintenance Standard for Cooling System
- Power Train
- Maintenance Standard for Swing Circle
- Maintenance Standard for Swing Machinery
- Maintenance Standard for Sprocket
- Undercarriage and Frame
- Maintenance Standard for Track Frame and Idler Cushion
- Maintenance Standard for Idler
- Maintenance Standard for Track Roller
- Maintenance Standard for Carrier Roller
- Maintenance Standard for Track Shoes
- Maintenance Standard for Triple Shoes
- Maintenance Standard for Road Liner
- Maintenance Standard for Rubber Shoes
- Hydraulic System
- Maintenance Standard for Hydraulic Tank
- Maintenance Standard for Main Pump
- Maintenance Standard for Main Pump Servo Valve
- Maintenance Standard for PC-EPC Valve
- Maintenance Standard for Swing Motor
- Maintenance Standard for Travel Motor
- Maintenance Standard for Control Valve
- Maintenance Standard for Boom Anti-Drop Valve
- Maintenance Standard for Arm Anti-Drop Valve
- Maintenance Standard for Offset Cylinder Anti-Drop Valve
- Maintenance Standard for Work Equipment and Swing PPC Valve
- Maintenance Standard for Blade PPC Valve
- Maintenance Standard for Offset PPC Valve (with EPC Valve)
- Maintenance Standard for EPC Valve of Offset PPC Valve
- Maintenance Standard for Travel PPC Valve
- Maintenance Standard for 1st-Line Attachment PPC Valve (with EPC Valve)
- Maintenance Standard for EPC Valve of 1st-Line Attachment PPC Valve
- Maintenance Standard for Solenoid Valve
- Maintenance Standard for Attachment Circuit Accumulator (For Low Pressure Circuit)
- Maintenance Standard for Center Swivel Joint
- Work Equipment
- Maintenance Standard for Work Equipment Linkage
- Dimensions of Arm
- Dimensions of Bucket
- Maintenance Standard for Boom Cylinder
- Maintenance Standard for Arm Cylinder
- Maintenance Standard for Boom Offset Cylinder
- Maintenance Standard for Bucket Cylinder
- Maintenance Standard for Blade Cylinder
- 80 Appendix
- Table of Contents
- Precautions Before Work
- Air Conditioner System
- Precautions for Refrigerant
- Air Conditioner Component
- Specifications of Air Conditioner
- Structure and Function of Refrigeration Cycle
- Outline of Refrigeration Cycle
- Component Parts of Air Conditioner System
- Air Conditioner Unit
- Configuration Diagram of Air Conditioner Unit
- Function of Air Conditioner Unit
- Component Parts of Air Conditioner Unit
- Function of Evaporator as Air Conditioner Unit Component
- Function of Heater Core as Air Conditioner Unit Component
- Function of Evaporator Temperature Sensor as Air Conditioner Unit Component
- Function of Servo Motor as Air Conditioner Unit Component
- Structure of Expansion Valve as Air Conditioner Unit Component
- Function of Expansion Valve as Air Conditioner Unit Component
- Operate Expansion Valve as Air Conditioner Unit Component
- Function of Dual Pressure Switch
- Air Conditioner Controller
- Structure of Air Conditioner Controller
- Compressor
- Structure of Compressor
- Specifications of Compressor
- Function of Compressor
- Condenser
- Structure of Condenser
- Specifications of Condenser
- Function of Condenser
- Receiver Drier
- Structure of Receiver Dryer
- Specifications of Receiver Dryer
- Function of Receiver Dryer
- Air Conditioner Related Sensors
- Structure of Sunlight Sensor
- Function of Sunlight Sensor
- Structure of Outside Temperature Sensor
- Function of Outside Air Temperature Sensor
- Explanation of Procedure for Test of and Troubleshooting of Air Conditioner
- Circuit Diagram and Configuration of Connector Pins of Air Conditioner
- System Diagram of Air Conditioner
- Input and Output Signals of Air Conditioner Controller
- Function of Air Conditioner Controller
- Locations of Air Conditioner Parts and Layout of Connectors
- Examine Air Leakage (Duct)
- How to Examine Air Leakage (Duct)
- Examine Air Conditioner with Self-Diagnosis Function
- Open the Electrical System Abnormality Record Screen in Service Mode of Machine Monitor
- Examine Vent (Mode) Changeover
- How to Examine Vent (Mode) Changeover
- Examine Fresh/Recirc Air Changeover
- How to Examine Fresh/Recirc Air Changeover
- Examine Sunlight Sensor
- How to Examine Sunlight Sensor
- Examine Refrigerant (Dual) Pressure Switch
- How to Examine Refrigerant (Dual) Pressure Switch
- Examine Relay
- Air Conditioner Troubleshooting Chart 1
- Air Conditioner Troubleshooting Chart 2
- Information Shown in Troubleshooting Table
- Failure Code [879AKA]
- Failure Code [879AKB]
- Failure Code [879BKA]
- Failure Code [879BKB]
- Failure Code [879CKA]
- Failure Code [879CKB]
- Failure Code [879DKZ]
- Failure Code [879EMC]
- Failure Code [879FMC]
- Failure Code [879GKX]
- Troubleshooting for Power Supply System (Air Conditioner Does Not Operate)
- Troubleshooting for Compressor and Refrigerant System (Air is Not Cooled)
- Troubleshooting for Blower Motor System (No Air Comes Out or Air Flow is Abnormal)
- Troubleshooting for Fresh/Recirc Air Changeover
- Troubleshooting by Gauge Pressure
- Connect Service Tool
- How to Connect Service Tool
- Precautions for Disconnection and Connection of Air Conditioner Piping
- Handle Compressor Oil
- 90 Circuit Diagrams
- Table of Contents
- How to Read the Codes for Electric Cable
- Hydraulic Circuit Diagram
- Symbols Used in Hydraulic Circuit Diagram
- Hydraulic Circuit Diagram (1/2)
- Hydraulic Circuit Diagram (2/2)
- Hydraulic Circuit Diagram (At Boom RAISE Operation 1/ 2)
- Hydraulic Circuit Diagram (At Boom RAISE Operation 2/ 2)
- Hydraulic Circuit Diagram (At Left Swing Operation 1/ 2)
- Hydraulic Circuit Diagram (At Left Swing Operation 2/ 2)
- Hydraulic Circuit Diagram (At Boom RAISE and Left Swing Operation 1/ 2)
- Hydraulic Circuit Diagram (At Boom RAISE and Left Swing Operation 2/ 2)
- Electrical Circuit Diagram
- Symbols Used in Electric Circuit Diagram
- Electrical Circuit Diagram (1/9)
- Electrical Circuit Diagram (2/9)
- Electrical Circuit Diagram (3/9)
- Electrical Circuit Diagram (4/9)
- Electrical Circuit Diagram (5/9)
- Electrical Circuit Diagram (6/9)
- Electrical Circuit Diagram (7/9)
- Electrical Circuit Diagram (8/9)
- Electrical Circuit Diagram (9/9)
- Index
Komatsu
