These Komatsu PC1250-11R and PC1250SP-11R crawler excavators are big quarry and heavy earthmoving machines, usually digging deep cuts, loading trucks, or working in mining faces. The Komatsu PC1250-11R, PC1250SP-11R Crawler Excavator Shop Manual (SEN06932-09) is what shops and field techs reach for when something’s broken or out of spec and they don’t want to guess. People buy this when they’re doing real repairs, not just daily checks, and they want to fix it once and not come back on the same fault.
What this manual helps you do
- Trace hydraulic issues in the boom, arm, bucket, and travel circuits using system layouts and step‑by‑step test procedures.
- Diagnose engine and fuel system problems with guided checks, wiring information, and fault‑finding flow sequences.
- Follow disassembly and reassembly sequences for major components like final drives, swing machinery, cylinders, and pumps.
- Check and adjust machine settings, linkages, and controls so the excavator digs, swings, and tracks the way it should.
- Handle electrical and electronic faults by following harness routes, connector callouts, and machine‑side diagnostic procedures.
Who this is for
This is aimed at shop mechanics, dealership or field technicians, and fleet maintenance managers who actually wrench on these machines. If you’re just operating the excavator or only need daily/weekly service intervals, you’re better off with the Operation & Maintenance Manual instead.
FAQ
Q: Is this a PDF I can search and print?
A: Yes, it’s a PDF shop manual you can search on a laptop and print pages you’re OK getting dirty in the shop.
Q: Does it go deep enough for full overhauls?
A: These shop manuals usually cover teardown and rebuild procedures, diagnostic steps, and adjustment methods for workshop‑level repairs.
Q: How do I know it matches my exact machine?
A: Check your machine model (PC1250-11R or PC1250SP-11R) and confirm the book reference SEN06932-09 against your Komatsu info; if they match, you’re in the right place.
Bottom line: if you’re repairing or diagnosing a PC1250-11R or PC1250SP-11R and want dealer‑style guidance to save time and avoid comebacks, this is the right manual; if you only need basic operation info, keep looking.
📘 Show Index
Table of Contents:
- 00 Index and Foreword
- Index
- Abbreviation List
- Foreword, Safety, Basic Information
- How to Read the Shop Manual
- Safety Notice for Operation
- Precautions to Prevent Fire
- Procedures If Fire Occurs
- Precautions When You Discard 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
- 01 Specifications
- Table of Contents
- Specifications
- Specification Drawing
- Specification Drawing: PC1250-11R
- Specification Drawing: PC1250SP-11R
- Specification Drawing: PC1250-11R(Loading Shovel specification)
- Working Range Drawings
- Working Range: PC1250-11R
- Working Range: PC1250SP-11R
- Working Range: PC1250-11R(Loading Shovel specification)
- Specifications
- Specifications: PC1250-11R
- Specifications: PC1250SP-11R
- Specifications: PC1250-11R(Loading Shovel specification)
- Weight Table
- Weight Table: PC1250-11R
- Weight Table: PC1250SP-11R
- Weight Table: PC1250-11R (Loading Shovel Specification)
- 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
- Automatic Low Idle System
- Automatic Low Idle System Diagram
- Function of Automatic Low Idle System
- Operation of Automatic Low Idle System
- Engine Automatic Warm-up System
- System Diagram of Engine Automatic Warm-up System
- Function of Engine Automatic Warm-up System
- Overheat Prevention System
- Overheat Prevention System Diagram
- Function of Overheat Prevention System
- Turbocharger Protection System
- System Diagram of 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
- PTO Lubrication System
- Cooling System
- Layout Drawing of Cooling System
- Specifications of Cooling System
- Fan Speed Control System of Hydraulic Fan
- Fan Speed Control System Diagram of Hydraulic Fan
- Function of Fan Speed Control System of Hydraulic Fan
- Engine Output Control System of Hydraulic Fan
- Engine Output Control System Diagram of Hydraulic Fan
- Function of Engine Output Control System of Hydraulic Fan
- Fan Reverse Rotation System of Hydraulic Fan
- Fan Reverse Rotation System Diagram of Hydraulic Fan
- Function of Fan Reverse Rotation System of Hydraulic Fan
- Component Parts of Cooling System
- Cooling Fan Pump
- Cooling Fan Motor
- Control System
- Layout Drawing of Control System
- Machine Monitor System
- System Diagram of Machine Monitor System
- KomVision System
- Layout Drawing of KomVision System
- System Diagram of KomVision System
- Function of KomVision System
- KOMTRAX Plus System
- System Diagram of KOMTRAX Plus System
- Function of KOMTRAX Plus System
- Component Parts of Control System
- Machine Monitor
- KomVision Controller
- KomVision Camera
- KOMTRAX Terminal
- KOMTRAX Plus Controller
- Wireless LAN Unit
- Pump Controller
- Resistor for TVC Valve
- CAN Terminating Resistor
- Engine Controller
- Fuel Control Dial
- Fuel Feed Pump
- Fuel Feed Pump Switch
- Hydraulic System
- Layout Drawing of Hydraulic System
- OLSS
- Structure of OLSS
- Function of OLSS
- Pump Swash Plate Angle (Oil Flow) Control
- 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
- Variable Back Pressure Valve
- Work Equipment System
- Layout Drawing of Work Equipment System
- Machine Push-up System
- Machine Push-up System Diagram
- Function of Machine Push-up System
- Heavy Lift System
- Heavy Lift System Diagram
- Function of Heavy Lift System
- Operation of Heavy Lift System
- Boom Shockless Control System
- Boom Shockless Control Function System Diagram
- Function of Boom Shockless Control System
- Operation of Boom Shockless Control System
- 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
- Component Parts of Work Equipment System
- Work Equipment and Swing PPC Valve
- Solenoid Valve
- Pilot Circuit Accumulator
- Swing System
- Layout Drawing of Swing System
- Swing Control System Diagram
- Function of Swing Control System
- Swing Priority System Diagram
- Function of Swing Priority System
- Swing Compensation System Diagram
- Function of Swing Compensation System
- Operation of Swing Compensation 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
- Final Drive
- Travel PPC Valve
- Center Swivel Joint
- Lifting System
- Hydraulically Operated Stairway System
- Layout Drawing of Hydraulically Operated Stairway System
- Hydraulically Operated Stairway System Diagram
- Function of Hydraulically Operated Stairway System
- Component Parts of Lifting System
- Switch Box
- Proximity Switch Part
- Control Valve Assembly
- Undercarriage and Frame
- Layout Drawing of Undercarriage
- SPECIFICATIONS OF UNDERCARRIAGE
- 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
- CAB
- CAB Mount
- Structure of CAB Mount
- Function of CAB Mount
- CAB Tipping Stopper
- Structure of CAB Tipping Stopper
- Function of CAB Tipping Stopper
- 20 Standard Value Table
- Table of Contents
- Standard Value Table for Engine
- Standard Value Table for Engine: PC1250-11R
- Standard Value Table for Engine: PC1250SP-11R
- Standard Value Table for Machine
- Standard Value Table for Machine: PC1250-11R
- Standard Value Table for Machine: PC1250-11R (Loading Shovel Specification)
- Standard Value Table for Machine: PC1250SP-11R
- Machine Posture and Procedures to Measure Performance
- Machine Posture and Procedures to Measure Performance (Loading Shovel Specification)
- 30 Testing and Adjusting
- Table of Contents
- Precautions Before Work
- Related Information on Testing and Adjusting
- Differences In Machine Monitor Symbols
- 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 Boost Pressure
- How to Examine Boost Pressure on Machine Monitor
- How to Examine Boost Pressure by Testing Tool
- Examine Exhaust Gas Temperature
- How to Examine Exhaust Gas Temperature
- 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 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 on Machine Monitor
- How to Examine Engine Oil Pressure by Testing Tool
- 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 System for Leakage
- Examine Supply Pump
- How to Examine Supply Pump
- Handle Cylinder Cut-out Mode Operation
- Examine Alternator
- How to Examine Alternator
- Handle No-Injection Cranking Operation
- 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 Sprocket Wear
- How to Examine Sprocket Wear
- 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 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, Swing, and Travel Circuits
- How to Examine Oil Pressure in Work Equipment, Swing, and Travel Circuits
- How to Adjust Oil Pressure in Work Equipment, Swing, and Travel Circuits
- Examine and Adjust Oil Pressure in Control Circuit
- How to Examine Oil Pressure in Control Circuit
- How to Adjust Oil Pressure in Control Circuit
- Examine and Adjust Piston Pump Control Oil Pressure
- How to Examine TVC Valve Outlet Pressure
- How to Examine CO Valve + NC Valve Outlet Pressure of No. 1 and No. 2 Pumps
- How to Examine CO Valve + NC Valve Outlet Pressure of No. 3 Pump
- How to Examine Jet Sensor Outlet Differential Pressure of 4-Spool Control Valve on the Right Side and 5-Spool Control Valve on the Left Side
- How to Examine Jet Sensor Outlet Differential Pressure of 4-Spool Control Valve for Swing
- How to Adjust TVC Valve
- How to Adjust CO Valve + NC Valve of No. 1 and No. 2 Pumps
- How to Adjust CO Valve + NC Valve of No. 3 Pump
- How to Adjust Jet Sensor of 4-Spool Control Valve on the Right Side and 5-Spool Control Valve on the Left Side
- How to Adjust Jet Sensor of 4-Spool Control Valve for Swing
- Examine Servo Piston Stroke
- How to Examine Servo Piston Stroke
- 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 Outlet Pressure in PPC Valve
- Examine Swing PPC Shuttle Valve Outlet Pressure
- How to Examine Swing PPC Shuttle Valve Outlet Pressure
- Adjust Play of Work Equipment and Swing PPC Valves
- How to Adjust Play of Work Equipment and Swing PPC Valves
- Examine Travel Deviation
- How to Examine Travel Deviation
- Examine Cooling Fan Speed
- How to Examine Cooling Fan Speed
- Examine Aftercooler Fan Speed
- How to Examine Aftercooler Fan Speed
- Examine Oil Pressure in Fan Pump Circuit
- How to Examine Oil Pressure in Fan Pump Circuit
- Examine Aftercooler Fan Pump Circuit Oil Pressure
- How to Examine Aftercooler Fan Pump Circuit Oil Pressure
- Examine Fan Pump EPC Electric Current
- How to Examine Fan Pump EPC Electric Current
- Examine Fan Pump EPC Solenoid Valve Outlet Pressure
- How to Examine Fan Pump EPC Solenoid Valve Outlet Pressure
- 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 Swing Motor
- How to Examine Oil Leakage from Travel Motor
- How to Examine Oil Leakage of Swivel Joint
- Bleed Air from Hydraulic Circuit
- How to Bleed Air from Hydraulic System
- CAB Related Parts
- Examine CAB Tipping Stopper
- How to Examine Cab Tipping Stopper
- How to Adjust Mirrors
- Procedure to Adjust Machine Left Front Mirror (A)
- Procedure to Adjust Regular Position of Machine Left Front Mirror (A)
- Procedure to Adjust Machine Right Front Mirror (B)
- Procedure to Adjust Regular Position of Machine Right Front Mirror (B)
- Procedure to Adjust Machine Right Front Mirror (C)
- Procedure to Adjust Regular Position of Machine Right Front Mirror (C)
- 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 Self-Define Monitor Information
- Abnormality Record Menu
- How to See Maintenance Record
- Maintenance Mode Setting
- How to Set Phone Number Entry
- Default Menu
- Diagnostic Tests Menu
- Adjustment Menu
- No-Injection Cranking Operation
- KOMTRAX Settings Menu
- How to Show Service Message
- How to Operate Snap Shot
- How to Start Up KOMTRAX Terminal
- Default Setting of KOMTRAX Plus Controller
- Default Setting of KOMTRAX Plus Controller
- Default Setting of Wireless LAN Modem
- Default Setting of Wireless LAN Modem
- How to Examine Wireless LAN Modem Communication
- Download Data from KOMTRAX Plus Controller
- How to Download Data from KOMTRAX Plus Controller
- How to Download Data from Service Connector
- How to Download Data from Wireless LAN (Wireless LAN Spec)
- Adjust After Replacement of KOMTRAX Plus Controller
- How to Adjust After Replacement of KOMTRAX Plus Controller
- Adjust After Replacement of Wireless LAN Modem
- How to Adjust After Replacement of Wireless LAN Modem
- 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)
- Examine 12m Visibility on KomVision Screen
- 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: PC1250-11R
- Pm Clinic Check Sheet: PC1250SP-11R
- Perform Quick Pm
- 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 for Impure Ingredient in Fuel
- Examine Fuel Prefilter
- Examine Water Separator, Drain Water and Sediment
- Replace Fuel Prefilter Cartridge
- Examine Fuel Main Filter
- Examine Water Pump for Leakage
- Examine Engine Oil Level (Oil Quantity in Oil Pan)
- Examine Coolant Level (Reservoir 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 PTO Case
- Examine PTO Lubrication Filter Strainer
- 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 KOMTRAX Terminal
- Preparation for Troubleshooting of KOMTRAX Plus Controller
- Preparation for Troubleshooting of KomVision 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
- Connector List and Layout (Part Number of Pump Controller: In the 7835-73-5000s)
- Connector List and Layout (Part Number of Pump Controller: In the 7835-77-4000s)
- 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 [8800L8]
- Failure Code [8800ZG]
- 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@BAZK]
- Failure Code [B@BCNS]
- Failure Code [B@BCQA]
- Failure Code [B@BCZK]
- Failure Code [B@CBNS]
- Failure Code [B@HAMB]
- Failure Code [B@HANS]
- Failure Code [CA115]
- Failure Code [CA122]
- Failure Code [CA123]
- Failure Code [CA131]
- Failure Code [CA132]
- Failure Code [CA135]
- Failure Code [CA141]
- Failure Code [CA144]
- Failure Code [CA145]
- Failure Code [CA153]
- Failure Code [CA154]
- Failure Code [CA212]
- Failure Code [CA213]
- Failure Code [CA221]
- Failure Code [CA222]
- Failure Code [CA234]
- Failure Code [CA238]
- Failure Code [CA239]
- Failure Code [CA271]
- Failure Code [CA272]
- Failure Code [CA273]
- Failure Code [CA274]
- Failure Code [CA322]
- Failure Code [CA323]
- Failure Code [CA324]
- Failure Code [CA325]
- Failure Code [CA331]
- Failure Code [CA332]
- Failure Code [CA343]
- Failure Code [CA351]
- Failure Code [CA352]
- Failure Code [CA386]
- 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 [CA1135]
- Failure Code [CA1257]
- Failure Code [CA1843]
- Failure Code [CA1844]
- Failure Code [CA1942]
- Failure Code [CA2185]
- Failure Code [CA2186]
- Failure Code [CA2249]
- Failure Code [CA2555]
- Failure Code [CA2556]
- Failure Code [CA2765]
- Failure Code [CA4952] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [CA4952] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [CB115]
- Failure Code [CB238]
- Failure Code [CB239]
- Failure Code [CB271]
- Failure Code [CB272]
- Failure Code [CB273]
- Failure Code [CB274]
- Failure Code [CB343]
- Failure Code [CB352]
- Failure Code [CB386]
- Failure Code [CB441]
- Failure Code [CB442]
- Failure Code [CB689]
- Failure Code [CB697]
- Failure Code [CB698]
- Failure Code [CB731]
- Failure Code [CB778]
- Failure Code [CB1117]
- Failure Code [CB1257]
- Failure Code [CB4952] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [CB4952] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [D110KB]
- Failure Code [D163KB]
- Failure Code [D195KA] (Applicable Machine: 50121 to 51000)
- Failure Code [D195KB]
- Failure Code [D19JKZ]
- Failure Code [D1F0KA]
- Failure Code [D1F0KB]
- Failure Code [D1F0KY]
- Failure Code [D1R1KA]
- Failure Code [D1R1KB]
- Failure Code [D1R1KY]
- Failure Code [D567KM] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [D862KA]
- Failure Code [DA20MC]
- Failure Code [DA22KK]
- Failure Code [DA22KT] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DA25KP]
- Failure Code [DA26KP]
- Failure Code [DA2JKT] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DA2JKY] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DA2LKA] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DA2LKA] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DA2LKB] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DA2LKB] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DA2QKR] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DA2QKR] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DA2RKR] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DA2RKR] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DAF0KM]
- Failure Code [DAF0MB]
- Failure Code [DAF0MC]
- Failure Code [DAF8KB]
- Failure Code [DAF9KQ]
- Failure Code [DAFGMC]
- Failure Code [DAFLKA] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DAFLKA] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DAFLKB] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DAFLKB] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DAFQKR] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DAFQKR] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DAZ9KQ]
- Failure Code [DAZQKR] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DAZQKR] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DB2QKR]
- Failure Code [DB2RKR]
- Failure Code [DBP0KM]
- Failure Code [DBP0KT]
- Failure Code [DBP5KB]
- Failure Code [DBP5KY]
- Failure Code [DBPQKR] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DBPQKR] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DBV0MC]
- Failure Code [DBV1KK]
- Failure Code [DBV5KB]
- Failure Code [DBV6KB]
- Failure Code [DBVLKA] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DBVLKA] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DBVLKB] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DBVLKB] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DBVQKR] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DBVQKR] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DBVRKR] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DBVRKR] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DBVVKR]
- Failure Code [DBVWKR]
- Failure Code [DDNRKA] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DDNRKA] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DDNRKY] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DDNRKY] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DDNS00]
- Failure Code [DDXAL4]
- Failure Code [DGE5KB]
- Failure Code [DGH2KA]
- Failure Code [DGH2KB]
- Failure Code [DGT3KB]
- Failure Code [DGT4KA]
- Failure Code [DGT4KB]
- Failure Code [DGT5KA]
- Failure Code [DGT5KB]
- Failure Code [DHA4KA]
- Failure Code [DHPAMA]
- Failure Code [DHPAZL]
- Failure Code [DHPBMA]
- Failure Code [DHPBZL]
- Failure Code [DHPGMA]
- Failure Code [DHPGZL]
- Failure Code [DHPSMA]
- Failure Code [DHPZMA]
- Failure Code [DHS3MA]
- Failure Code [DHS4MA]
- Failure Code [DHS8MA]
- Failure Code [DHS9MA]
- Failure Code [DHSAMA]
- Failure Code [DHSBMA]
- Failure Code [DHSCMA]
- Failure Code [DHSDMA]
- Failure Code [DHSFMA]
- Failure Code [DHSGMA]
- Failure Code [DHSHMA]
- Failure Code [DHSJMA]
- Failure Code [DKR2KA]
- Failure Code [DKR2KB]
- Failure Code [DKR2NX]
- Failure Code [DKR3KA]
- Failure Code [DKR3KB]
- Failure Code [DKR3NX]
- Failure Code [DKULKA] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DKULKA] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DKULKB]
- Failure Code [DKULKY] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DKULKY] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DLM3KA]
- Failure Code [DLM3KB]
- Failure Code [DLM3MB]
- Failure Code [DMU6KB]
- Failure Code [DR10KA]
- Failure Code [DR12KA]
- Failure Code [DR20KA]
- Failure Code [DR21KX]
- Failure Code [DR30KA]
- Failure Code [DR31KX]
- Failure Code [DR40KA]
- Failure Code [DUMBKA] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DUMBKA] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DUMBKB]
- Failure Code [DV20KB]
- Failure Code [DW41KA]
- Failure Code [DW41KB]
- Failure Code [DW41KY]
- Failure Code [DW43KA]
- Failure Code [DW43KB]
- Failure Code [DW43KY]
- Failure Code [DW45KA] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DW45KA] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DW45KB] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DW45KB] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DW45KY] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DW45KY] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DW48KA]
- Failure Code [DW48KB]
- Failure Code [DW48KY]
- Failure Code [DW4CKA] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DW4CKB] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DW4CKY] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DW4CKY] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DW7BKA]
- Failure Code [DW7BKB]
- Failure Code [DW7BKY]
- Failure Code [DW91KA]
- Failure Code [DW91KB]
- Failure Code [DW91KY]
- Failure Code [DWK0KA]
- Failure Code [DWK0KB]
- Failure Code [DWK0KY]
- Failure Code [DWK2KA]
- Failure Code [DWK2KB]
- Failure Code [DWK2KY]
- Failure Code [DWK8KA]
- Failure Code [DWK8KB]
- Failure Code [DWK8KY]
- Failure Code [DWNRKA]
- Failure Code [DWNRKB]
- Failure Code [DWNRKY]
- Failure Code [DX16KA]
- Failure Code [DX16KB]
- Failure Code [DXA0KA]
- Failure Code [DXA0KB]
- Failure Code [DXAXKA]
- Failure Code [DXAXKB]
- Failure Code [DY20KA] (Single Wiper Specification)
- Failure Code [DY20KA] (Double Wiper Specification)
- Failure Code [DY20MA] (Single Wiper Specification)
- Failure Code [DY20MA] (Double Wiper Specification)
- Failure Code [DY2CKA]
- Failure Code [DY2CKB] (Part Number of Pump Controller: In the 7835-73-5000s)
- Failure Code [DY2CKB] (Part Number of Pump Controller: In the 7835-77-4000s)
- Failure Code [DY2CKY]
- Failure Code [DY2DKB] (Single Wiper Specification)
- Failure Code [DY2DKB] (Double Wiper Specification)
- Failure Code [DY2EKB] (Double Wiper Specification)
- Failure Code [DY2EKB] (Single Wiper Specification)
- Failure Code [DY2FMA] (Single Wiper Specification)
- Failure Code [F@BYNR]
- Failure Code [F@BYNS]
- Failure Code [F@BZNR]
- Failure Code [F@BZNS]
- Failure Code [F@HCZL]
- Failure Code [F7FQKR]
- Failure Code [F7G0MC]
- Failure Code [J100KA]
- Failure Code [J100KB]
- Failure Code [J100L6]
- Failure Code [J190KA]
- Failure Code [J190KB]
- Failure Code [J190L6]
- Failure Code [LA10ZL]
- Troubleshooting of Electrical System (E-Mode)
- E-1 Engine Does Not Start (Engine Does Not Crank) (Part Number of Pump Controller: In the 7835-73-5000s)
- E-1 Engine Does Not Start (Engine Does Not Crank) (Pump Controller Part number: 7835-77-4000 Series)
- E-2 Manual Preheating System Does Not Operate
- E-3 Automatic Preheating System Does Not Operate (Part Number of Pump Controller: In the 7835-73-5000s)
- E-3 Automatic Preheating System Does Not Operate (Part Number of Pump Controller: In the 7835-77-4000s)
- E-4 While Preheating is in Operation, Preheating Monitor Does Not Come On
- E-5 When Starting Switch is Turned to ON Position, Machine Monitor Shows Nothing (Part Number of Pump Controller: In the 7835-73-5000s)
- E-5 When Starting Switch is Turned to ON Position, Machine Monitor Shows Nothing (Part Number of Pump Controller: In the 7835-77-4000s)
- E-6 While Starting Switch is Turned to ON Position (with Engine Stopped), Engine Oil Level Monitor Comes On in Yellow
- E-7 While Starting Switch is Turned to ON Position (with Engine Stopped), Radiator Coolant Level Monitor Comes On in Yellow
- E-8 Engine Coolant Temperature Monitor Comes On in White While Engine Runs
- E-9 Hydraulic Oil Temperature Monitor Comes On in White While Engine Runs
- E-10 Air Cleaner Clogging Monitor Comes On in Yellow While Engine Runs
- E-11 Charge Level Monitor Comes On in Red While Engine is in Operation
- E-12 Fuel Level Monitor Comes On in Red While Engine Runs
- E-13 Engine Coolant Temperature Monitor Comes On in Red While Engine is in Operation
- E-14 Engine Oil Pressure Monitor Comes on in Red While Engine is in Operation
- E-15 Hydraulic Oil Temperature Monitor Comes on in Red While Engine is in Operation
- E-16 Fuel Gauge Display Does Not Move from Minimum or Maximum
- E-17 Display of Fuel Gauge is Different from Actual Fuel Level
- E-18 Coolant Temperature Gauge Display Does Not Move from Minimum or Maximum
- E-19 Display of Coolant Temperature Gauge is Different from Actual Coolant Temperature
- E-20 Hydraulic Oil Temperature Gauge Display Does Not Move from Minimum or Maximum
- E-21 Display of Hydraulic Oil Temperature Gauge is Different from Actual Oil Temperature
- E-22 Some Areas of Machine Monitor Screen are Not Shown
- E-23 Function Switch Does Not Operate
- E-24 Automatic Warm-up System Does Not Work (in Cold Weather)
- E-25 When Auto-Decelerator Switch is Operated, Auto-Decelerator Monitor Does Not Come On or Does Not Go Out
- E-26 Auto-Decelerator is Not Operated or Canceled with Lever
- E-27 When Working Mode Switch is Operated, Working Mode Selection Screen is Not Shown
- E-28 When Working Mode is Changed, Setting of Engine and Hydraulic Pump is Not Changed
- E-29 When Travel Speed Switch is Operated, Travel Speed Monitor Does Not Change
- E-30 When Travel Speed Selection is Changed, Actual Travel Speed Does Not Change
- E-31 Alarm Buzzer Cannot be Canceled
- E-32 Service Meter is Not Shown, While Starting Switch is in OFF Position
- E-33 Service Mode Cannot be Selected
- E-34 All of Work Equipment, Swing, and Travel Mechanism Do Not Move (Part Number of Pump Controller: In the 7835-73-5000s)
- E-34 All Work Equipment, Swing, and Travel Do Not Operate (Part Number of Pump Controller: In the 7835-77-4000s)
- E-35 All Work Equipment, Swing and Travel Do Not Lock
- E-36 When Swing Brake Cancel Switch is Set to Cancel Position, Machine Cannot Swing (Part Number of Pump Controller: In the 7835-73-5000s)
- E-36 When Swing Brake Cancel Switch is Set to Cancel Position, Machine Cannot Swing (Part Number of Pump Controller: In the 7835-77-4000s)
- E-37 When Swing Brake Cancel Switch is Set to Normal Position, Swing Holding Brake Does Not Operate
- E-38 Alarm Does Not Sound During Travel
- E-39 Travel Alarm Does Not Stop When Machine Stops
- E-40 Horn Does Not Sound
- E-41 Horn Does Not Stop
- E-42 When Wiper Switch is Operated, Wiper Monitor Does Not Come On or Go Out
- E-43 Wiper Does Not Operate When Wiper Switch is Operated (Single Wiper Specification)
- E-44 Wiper Does Not Operate When Wiper Switch is Operated (Double Wiper Specification)
- E-45 Fuel Feed Pump Does Not Operate or Stop Automatically
- E-46 Window Washer Does Not Operate When Window Washer Switch is Operated
- E-47 "Boom RAISE" is Not Shown Correctly with Monitoring Function
- E-48 "Boom LOWER" is Not Shown Correctly with Monitoring Function
- E-49 "Arm OUT" is Not Shown Correctly with Monitoring Function
- E-50 "Arm IN" is Not Shown Correctly with Monitoring Function
- E-51 "Bucket DUMP" is Not Shown Correctly with Monitoring Function
- E-52 "Bucket CURL" is Not Shown Correctly with Monitoring Function
- E-53 "Swing" is Not Shown Correctly with Monitoring Function
- E-54 "Travel" is Not Shown Correctly with Monitoring Function
- E-55 KOMTRAX System Does Not Operate Correctly
- E-56 Machine Push-Up Function Cannot be Canceled
- E-57 Machine Push-Up Function Does Not Operate
- E-58 Step Light Does Not Come On
- E-59 Step Light Does Not Go Out
- E-60 Boom Shockless Function Cannot be Canceled
- E-61 Boom Shockless Function Does Not Work
- E-62 Bottom Dump Cannot be Operated
- Troubleshooting for Hydraulic and Mechanical Systems (H Mode)
- H-1 All Work Equipment, Travel, and Swing Speed or Power is Low
- H-2 Engine Speed Drops Significantly or Engine Stalls
- H-3 All Work Equipment, Swing and Travel Do Not Work
- H-4 Unusual Noise is Heard from Around Work Equipment Pump
- H-5 Boom Speed or Power is Low in Normal Mode
- H-6 Boom RAISE Speed or Power is Low in Heavy Lift Mode
- H-7 Boom LOWER Speed or Power is Low in Machine Push Up Mode
- H-8 Arm Speed or Power is Low
- H-9 Bucket Speed or Power is Low
- H-10 Boom Does Not Operate
- H-11 Arm Does Not Operate
- H-12 Bucket Does Not Operate
- H-13 Hydraulic Drift of Boom is Large
- H-14 Hydraulic Drift of Arm is Large
- H-15 Hydraulic Drift of Bucket is Large
- H-16 Time Lag of Boom is Large
- H-17 Time Lag of Arm is Large
- H-18 Time Lag of Bucket is Large
- H-19 Boom Shockless Function Does Not Work or Cannot be Released
- H-20 Machine Accidentally Turns to One Side When Machine Travels (It Turns in the Same Direction When Traveling Forward and Reverse)
- H-21 Machine Accidentally Turns to One Side When Machine Travels (It Turns in the Different Directions When Traveling Forward and Reverse)
- H-22 Travel Deviation is Large at Start of Travel Only When Travel Lever is Fully Moved.
- H-23 Regardless of the Stroke of the Travel Lever, Travel Deviation is Large at Start of Traveling
- H-24 Travel Deviation is Large at Mixed Operation
- H-25 Travel Speed or Power is Low
- H-26 Only the One Side Track Can Operate (Machine Does Not Travel FORWARD or REVERSE)
- H-27 Only the One Side Track Can Operate (in Either Forward or Reverse Direction)
- H-28 Travel Speed Does Not Change, or Travel Speed is Too Slow or Fast
- H-29 Upper Structure Does Not Swing to Right and Left
- H-30 Upper Structure Swings Only in One Direction
- H-31 Swing Acceleration or Swing Speed is Low in Lateral Directions (Right and Left)
- H-32 Swing Acceleration Performance is Unsatisfactory or Swing Speed is Slow in Only One Direction
- H-33 In Mixed Operation of Work Equipment, Swing Speed or Power is Low
- H-34 Swing Acceleration or Swing Speed is Low During Mixed Operation with Boom in Swing Priority Mode.
- H-35 Upper Structure Overruns Too Much When It Stops Swing Operation in Lateral Directions of Right and Left.
- H-36 Upper Structure Speed is High When It Stops Swing Operation (on One Side)
- H-37 Shock is Large When Upper Structure Stops Swing Operation (Right and Left)
- H-38 Shock is Large When Upper Structure Stops Swing Operation (in Only One Direction)
- H-39 Large Unusual Noise is Heard When Upper Structure Stops Swing Operation (in Right and Left Directions).
- H-40 Large Unusual Noise is Heard When Upper Structure Stops Swing Operation in Only One Direction
- H-41 Swing Drift on a Slope is Large
- H-42 Fan Rotation is Abnormal (Such as Excessive Noise or Vibration of Fan, or Overheating).
- Troubleshooting of Engine (S-Mode)
- Information Shown in Troubleshooting Table (S-Mode)
- S-1 Engine Does Not Crank When Starting Switch is Turned to Start Position
- S-2 Engine Cranks but No Exhaust Smoke Comes Out
- S-3 Fuel is Injected but Engine Does Not Start (Misfiring: Engine Cranks but Does Not Start)
- S-4 Engine Startability is Unsatisfactory
- S-5 Engine Does Not Pick Up Smoothly
- S-6 Engine Stops During Operation
- S-7 Engine Runs Rough or is Not Stable
- S-8 Engine Lacks Power
- S-9 Engine Oil Consumption is Excessive
- S-10 Oil Becomes Dirty Quickly
- S-11 Fuel Consumption is Excessive
- S-12 Oil is in Coolant (or Coolant Spurts Back or Coolant Level Goes Down)
- S-13 Engine Oil Pressure Falls
- S-14 Fuel Mixes Into Engine Oil
- S-15 Water Mixes Into Engine Oil (Milky)
- S-16 Coolant Temperature Increases Too High (Overheat)
- S-17 There is an Unusual Noise
- S-18 Vibration is Excessive
- S-19 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
- 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 Starter Assembly
- How to Remove Starting Motor Assembly
- How to Install Starting Motor Assembly
- Remove and Install Alternator Belt
- How to Remove Alternator Belt
- How to Install Alternator Belt
- 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 Cooling Fan Motor Assembly
- How to Remove Cooling Fan Motor Assembly
- How to Install Cooling Fan Motor Assembly
- Remove and Install Engine, PTO, and Hydraulic Pump Assembly
- How to Remove Engine, PTO, and Hydraulic Pump Assembly
- How to Install Engine, PTO, and Hydraulic 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 Fuel Tank Assembly
- How to Remove Fuel Tank Assembly
- How to Install Fuel Tank Assembly
- Remove and Install Muffler Assembly
- How to Remove Muffler Assembly
- How to Install Muffler Assembly
- Remove and Install Bellows Pipe Assembly
- How to Remove Bellows Pipe Assembly
- How to Install Bellows Pipe 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
- Disassemble and Assemble PTO Assembly
- How to Disassemble PTO Assembly
- How to Assemble PTO Assembly
- Remove and Install PTO Assembly
- How to Remove PTO Assembly
- How to Install PTO Assembly
- 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 Final Drive Assembly
- How to Disassemble Final Drive Assembly
- How to Assemble 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
- Remove and Install Idler Assembly
- How to Remove Idler Assembly
- How to Install Idler Assembly
- Disassemble and Assemble Recoil Spring Assembly
- How to Disassemble Recoil Spring Assembly
- How to Assemble Recoil Spring Assembly
- Remove and Install Track Roller Assembly
- How to Remove Track Roller Assembly
- How to Install Track Roller Assembly
- Remove and Install Carrier Roller Assembly
- How to Remove Carrier Roller Assembly
- How to Install Carrier Roller Assembly
- Disassemble and Assemble One Track Link Assembly in Field
- How to Disassemble One Track Link Assembly in Field
- How to Assemble One Track Link Assembly in Field
- Separate and Connect Track Assembly
- How to Separate Track Assembly
- How to Install Track Assembly
- Disassemble and Assemble Idler Assembly
- How to Disassemble Idler Assembly
- How to Assemble Idler Assembly
- Disassemble and Assemble Idler Adjustment Cylinder Assembly
- How to Disassemble Idler Adjustment Cylinder Assembly
- How to Assemble Idler Adjustment Cylinder Assembly
- Disassemble and Assemble Track Roller Assembly
- How to Disassemble Track Roller Assembly
- How to Assemble Track Roller Assembly
- Disassemble and Assemble Carrier Roller Assembly
- How to Disassemble Carrier Roller Assembly
- How to Assemble Carrier 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 Hydraulic Pump Assembly
- How to Remove Hydraulic Pump Assembly
- How to Install Hydraulic Pump Assembly
- Remove and Install Control Valve Assembly
- How to Remove Control Valve Assembly
- How to Install Control Valve Assembly
- Remove and Install Swing Motor Assembly
- How to Remove Swing Motor Assembly
- How to Install Swing Motor 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
- Disassemble and Assemble Grease Gun Assembly
- How to Disassemble Grease Gun Assembly
- How to Assemble Grease Gun Assembly
- Work Equipment
- Remove and Install Bucket Cylinder Assembly
- How to Remove Bucket Cylinder Assembly
- How to Install Bucket Cylinder Assembly
- Remove and Install Bucket Cylinder Assembly (Loading Shovel Specification)
- How to Remove Bucket Cylinder Assembly (Loading Shovel Specification)
- How to Install Bucket Cylinder Assembly (Loading Shovel Specification)
- Remove and Install Arm Cylinder Assembly
- How to Remove Arm Cylinder Assembly
- How to Install Arm Cylinder Assembly
- Remove and Install Arm Cylinder Assembly (Loading Shovel Specification)
- How to Remove Arm Cylinder Assembly (Loading Shovel Specification)
- How to Install Arm Cylinder Assembly (Loading Shovel Specification)
- Remove and Install Boom Cylinder Assembly
- How to Remove Boom Cylinder Assembly
- How to Install Boom Cylinder Assembly
- Remove and Install Boom Cylinder Assembly (Loading Shovel Specification)
- How to Remove Boom Cylinder Assembly (Loading Shovel Specification)
- How to Install Boom Cylinder Assembly (Loading Shovel Specification)
- Remove and Install Bucket Assembly
- How to Remove Bucket Assembly
- How to Install Bucket Assembly
- Remove and Install Bucket Assembly (Loading Shovel Specification)
- How to Remove Bucket Assembly (Loading Shovel Specification)
- How to Install Bucket Assembly (Loading Shovel Specification)
- Remove and Install Arm Assembly
- How to Remove Arm Assembly
- How to Install Arm Assembly
- Remove and Install Arm Assembly (Loading Shovel Specification)
- How to Remove Arm Assembly (Loading Shovel Specification)
- How to Install Arm Assembly (Loading Shovel Specification)
- Remove and Install Boom Assembly
- How to Remove Boom Assembly
- How to Install Boom Assembly
- Remove and Install Boom Assembly (Loading Shovel Specification)
- How to Remove Boom Assembly (Loading Shovel Specification)
- How to Install Boom Assembly (Loading Shovel Specification)
- Disassemble and Assemble Work Equipment Cylinder Assembly
- How to Disassemble Work Equipment Cylinder Assembly
- How to Assemble Work Equipment Cylinder Assembly
- Disassemble and Assemble Bottom Dump Cylinder Assembly (Loading Shovel Specification)
- How to Disassemble Bottom Dump Cylinder Assembly (Loading Shovel Specification)
- How to Assemble Bottom Dump Cylinder Assembly (Loading Shovel Specification)
- CAB Related Parts
- Remove and Install Top Guard Assembly
- How to Remove Top Guard Assembly
- How to Install Top Guard Assembly
- Remove and Install Operator Cab Assembly
- How to Remove Operator Cab Assembly
- How to Install Operator Cab Assembly
- 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 Seat Belt
- 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 Crankcase Pressure Sensor
- How to Remove Crankcase Pressure Sensor
- How to Install Crankcase Pressure Sensor
- Remove and Install KomVision Camera
- How to Remove KomVision Camera
- How to Install KomVision Camera
- Remove and Install KOMTRAX Terminal Assembly
- How to Remove KOMTRAX Terminal Assembly
- How to Install KOMTRAX Terminal Assembly
- Remove And Install KOMTRAX Plus Controller Assembly
- How to Remove KOMTRAX Plus Controller Assembly
- How to Install KOMTRAX Plus Controller Assembly
- Remove and Install Wireless LAN Unit Assembly
- How to Remove Wireless LAN Unit Assembly
- How to Install Wireless LAN Unit Assembly
- 60 Maintenance Standard
- Table of Contents
- Engine and Cooling System
- Maintenance Standard for Engine Mount
- Maintenance Standard for PTO
- Maintenance Standard for Cooling System
- Maintenance Standard for Cooling Fan Pump
- Maintenance Standard for EPC Valve of Cooling Fan Pump
- Maintenance Standard for Cooling Fan Motor
- Power Train
- Maintenance Standard for Swing Circle
- Maintenance Standard for Swing Machinery
- Maintenance Standard for Final Drive
- Maintenance Standard for Sprocket
- Maintenance Standard for Sprocket Tooth Profile Full-Scale Drawing
- 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 Double Shoes
- Hydraulic System
- Maintenance Standard for Main Pump
- Maintenance Standard for Swing Motor
- Maintenance Standard for Control Valve
- Maintenance Standard for Straight Travel Valve of Control Valve
- Maintenance Standard for Variable Back Pressure Valve
- Maintenance Standard for Work Equipment and Swing PPC Valve
- Maintenance Standard for Travel PPC Valve
- Maintenance Standard for Solenoid Valve
- Maintenance Standard for Center Swivel Joint
- Work Equipment
- Maintenance Standard for Work Equipment Linkage
- Dimensions of Arm
- Dimensions of Bucket
- Maintenance Standard for Work Equipment Linkage (Loading Shovel Specification)
- Dimensions of Arm (Loading Shovel Specification)
- Dimensions of Bucket (Loading Shovel Specification)
- Maintenance Standard for Boom Cylinder
- Maintenance Standard for Boom Cylinder (Loading Shovel Specification)
- Maintenance Standard for Arm Cylinder
- Maintenance Standard for Arm Cylinder (Loading Shovel Specification)
- Maintenance Standard for Bucket Cylinder
- Maintenance Standard for Bucket Cylinder (Loading Shovel Specification)
- Maintenance Standard for Bottom Dump Cylinder (Loading Shovel Specification)
- 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]
- A-1 Troubleshooting for Power Supply System (Air Conditioner Does Not Operate)
- A-2 Troubleshooting for Compressor and Refrigerant System (Air is Not Cooled)
- A-3 Troubleshooting for Blower Motor System (No Air Comes Out or Air Flow is Abnormal)
- A-4 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
- Hydraulic Circuit Diagram
- Symbols Used in Hydraulic Circuit Diagram
- Hydraulic Circuit Diagram(1/4)
- Hydraulic Circuit Diagram(2/4)
- Hydraulic Circuit Diagram(3/4)
- Hydraulic Circuit Diagram(4/4)
- Electrical Circuit Diagram
- Symbols Used in Electric Circuit Diagram
- Electrical Circuit Diagram (1/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (2/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (3/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (4/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (5/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (6/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (7/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (8/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (9/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (10/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (11/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (12/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (13/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (14/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (15/15) (Part Number of Pump Controller: In the 7835-73-5000s)
- Electrical Circuit Diagram (1/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (2/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (3/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (4/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (5/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (6/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (7/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (8/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (9/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (10/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (11/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (12/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (13/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Electrical Circuit Diagram (14/14) (Part Number of Pump Controller: In the 7835-77-4000s)
- Index
Komatsu
