Komatsu PC270LC-7L (SN from A86001) Crawler Excavators (USA) Workshop Manual (CEBM005905)

Illustrated factory Workshop Manual for Komatsu Crawler Excavators Models PC270LC-7L.

This manual will assist you in diagnosing, repairing, and adjusting for your crawler excavator.
You can use a Windows, Mac, or Android device to view this manual. You only need to have a PDF reader installed.

Covered Models (USA):
   PC270LC-7L (SN: A86001-)

Format: PDF, 838 pages
Language: English
Table of Contents:
   SAFETY
      Safety Notice
   GENERAL
   HOW TO READ THE SHOP MANUAL
      Volumes
      Distribution And Updating
      Filing Method
      Revised Edition Mark
      Revisions
      Symbols
   HOISTING INSTRUCTIONS
      Hoisting
      Wire Ropes
   PUSH-PULL TYPE COUPLER
   COATING MATERIALS
   STANDARD TIGHTENING TORQUE
      Standard Tightening Torque Of Bolts And Nuts
      Tightening Torque Of Split Flange Bolts
      Tightening Torque For Flared Nuts
      Table Of Tightening Torques For O-ring Boss Piping Joints
      Table Of Tightening Torques For O-ring Boss Plugs
      Tightening Torque For 102 And 114 Engine Series
      Tightening Torque Table For Hoses (Taper Seal Type And Face Seal Type)
   ELECTRIC WIRE CODE
      Classification By Thickness
      Classification By Color And Code
   CONVERSION TABLES
      Method Of Using The Conversion Table
   SPECIFICATION DIMENSION DRAWINGS
      Dimensions
      Working Ranges
   SPECIFICATIONS
   WEIGHT TABLE
   FUEL, COOLANT AND LUBRICANTS
      Recommended Brands, Recommended Quality For Products Other Than Komatsu Genuine Oil
   ENGINE RELATED PARTS
   RADIATOR . OIL COOLER . AFTERCOOLER
   POWER TRAIN
   FINAL DRIVE
   SWING MACHINERY
   SWING CIRCLE
   TRACK FRAME . RECOIL SPRING
   IDLER
   CARRIER ROLLER
   TRACK ROLLER
   TRACK SHOE
   TRIPLE GROUSER SHOE
   HYDRAULIC EQUIPMENT LAYOUT DRAWING
   HYDRAULIC TANK
   HYDRAULIC PUMP
      HPV95+95
      LS valve
      PC Valve
      LS(PC)-EPC Valve
   CONTROL VALVE
   SELF PRESSURE REDUCING VALVE
      Main Relief Valve
   VARIABLE PRESSURE COMPENSATION VALVE
   CLSS
   SWING MOTOR
      Relief Valve Portion
   REVERSE PREVENTION VALVE
   CENTER SWIVEL JOINT
   TRAVEL MOTOR
      Motor Operation
      Parking Brake Operation
      Brake Valve Operation
   TRAVEL JUNCTION VALVE
   TRAVEL PPC SHUTTLE VALVE
   VALVE CONTROL
   WORK EQUIPMENT . SWING PPC VALVE
   TRAVEL PPC VALVE
   SERVICE PPC VALVE
   SOLENOID VALVE
   PPC ACCUMULATOR
   RETURN OIL FILTER
   BOOM HYDRAULIC DRIFT PREVENTION VALVE
   LIFT CHECK VALVE
   ATTACHMENT CIRCUIT SELECTOR VALVE
   HYDRAULIC CYLINDERS
      Boom Cylinder
      Arm Cylinder
      Bucket Cylinder
   WORK EQUIPMENT
      Hours
      Hours
      Dimension Of Arm
      Dimension Of Bucket
   AIR CONDITIONER
      Piping
   ENGINE CONTROL
      Fuel Control Dial
      Engine Throttle And Pump Controller
   ELECTRONIC CONTROL SYSTEM
      Total System Diagram
   MULTI MONITOR SYSTEM
      Monitor Panel
      Monitor Control, Display Portion Monitor Portion
      Maintenance Function
   SEGMENT MONITOR SYSTEM
      Monitor panel
   SENSORS
      Engine Oil Level Sensor
      Engine Oil Pressure Sensor (For Low Pressure)
      Coolant Temperature Sensor
      Hydraulic Oil Temperature Sensor
      Fuel Level Sensor
      Air Cleaner Clogging Sensor
   STANDARD VALUE TABLES
      Engine
      Chassis
   SERVICE TOOLS
   ENGINE
      Engine Speed
      Exhaust Gas Color
      Valve Clearance
      Compression Pressure
      Blow-by Pressure
      Fuel Injection Timing
      Engine Oil Pressure
      Engine Speed Sensor
      Defective Cylinder
   BELT TENSION - AIR COMPRESSOR
   ENGINE CONTROL SYSTEM FAILURE
   SWING CIRCLE BEARINGS
   TRACK SHOE TENSION
   SPROCKET
   OIL PRESSURE
      Work Equipment, Swing And Travel
      Control Circuit
      Pump PC Control Circuit
      Pump LS Control Circuit
      Solenoid Valve Output Pressure
      PPC Valve Output Pressure
   WORK EQUIPMENT AND SWING PPC VALVE
   WORK EQUIPMENT - HYDRAULIC DRIFT
   RELEASING PRESSURE IN HYDRAULIC CIRCUIT
   OIL LEAKAGE
   AIR BLEEDING OF VARIOUS PARTS
   DIODE INSPECTION PROCEDURES
   MULTI-MONITOR PANEL
      Monitor Panel Functions - Conventional And Special
      Conventional Function: Operator`s Menu
      Special Function: Service Menu
      Operator`s Menu And Display (Outline)
      Table For Service And Failure Code Numbers
      Service Menu
   SEGMENTS MONITOR PANEL - SPECIAL FUNCTIONS
      Ordinary functions and special functions of monitor panel
      Display of operator menu
      Operation and display of service menu
   ELECTRICAL SYSTEM TROUBLESHOOTING
   PM TUNE UP SERVICE
   POINTS TO REMEMBER WHEN TROUBLESHOOTING
   SEQUENCE OF EVENTS IN TROUBLESHOOTING
   POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
   CHECKS BEFORE TROUBLESHOOTING
   CLASSIFICATION AND STEPS FOR TROUBLESHOOTING
      Classification Of Troubleshooting
      Steps For Troubleshooting
      Failure-looking Phenomenon And Troubleshooting No.
   ELECTRICAL CIRCUIT DIAGRAM SYSTEM
      Connector Table
      Connector Location Diagram
   ELECTRICAL CIRCUIT DIAGRAMS
   CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
   T-BRANCH BOX AND T-BRANCH TABLE
   BEFORE TROUBLESHOOTING FOR DISPLAYED CODE
   POINTS TO REMEMBER WHEN TROUBLESHOOTING SYSTEM
      Points To Remember If Abnormality Returns To Normal By Itself
      User Code Memory Retention Function
      Information In Troubleshooting Table
   E101 - ABNORMAL DATA IN ERROR HISTORY
   E112 - SHORT IN WINDSHIELD WIPER MOTOR DRIVE FORWARD ROTATION
   E113 - SHORT IN WINDSHIELD WIPER MOTOR DRIVE REVERSE ROTATION
   E114 - SHORT OR OPEN IN WINDOW WASHER SYSTEM
      S/N A86001-A86216
      S/N A86217-UP
   E115 - ABNORMAL WINDSHIELD WIPER MOTION
   E116 - ABNORMALITY IN PARKING WIPER ARM
   E201 - SHORT OR OPEN IN TRAVEL INTERLOCKING SOLENOID
      S/N A86001-A86216
      S/N A86217-UP
   E203 - SHORT IN SWING holding brake SOLENOID
      S/N A86001-A86216
      S/N A86217-UP
   E204 - SHORT IN MERGE/DIVIDE SOLENOID
      S/N A86001-A86216
      S/N A86217-UP
   E205 - SHORT IN 2 STAGE RELIEF SOLENOID
      S/N A86001-A86216
      S/N A86217-UP
   E206 - SHORT IN TRAVEL SPEED SHIFT SOLENOID
      S/N A86001-A86216
      S/N A86217-UP
   E211 - OPEN IN TRAVEL INTERLOCKING SOLENOID
      S/N A86001-A86216
      S/N A86217-UP
   E213 - OPEN IN SWING holding BRAKE SOLENOID
      S/N A86001-A86216
      S/N A86217-UP
   E214 - OPEN OF MERGE/DIVIDE SOLENOID
      S/N A86001-A86216
      S/N A86217-UP
   E215 - OPEN IN 2 STAGE RELIEF SOLENOID
      S/N A86001-A86216
      S/N A86217-UP
   E216 - OPEN IN TRAVEL SPEED SOLENOID
      S/N A86001-A86216
      S/N A86217-UP
   E217 - ABNORMAL INPUT FOR MODEL CODE
   E218 - OPEN IN S-NET SIGNAL
   E222 - SHORT IN LS-EPC SOLENOID
   E223 - OPEN IN LS-EPC SOLENOID SYSTEM
   E224 - ABNORMAL F-PUMP PRESSURE SENSOR SIGNAL
   E225 - ABNORMAL R-PUMP PRESSURE SENSOR SIGNAL
   E226 - ABNORMAL PRESSURE SENSOR POWER SUPPLY
   E227 - ABNORMAL ENGINE RPM SIGNAL IN GOVERNOR PUMP CONTROLLER
   E228 - SHORT IN ATTACHMENT RETURN SWITCHING RELAY
   E232 - SHORT IN PC-EPC SOLENOID
   E233 - OPEN IN PC-EPC SOLENOID SYSTEM
   E238 - OPEN IN ATTACHMENT RETURN SWITCH RELAY
   E245 - SHORT IN ATTACHMENT OIL FLOW RATE EPC SYSTEM
   E246 - OPEN IN ATTACHMENT OIL FLOW RATE EPC SYSTEM
   E256 - INCORRECT NONVOLATILE MEMORY DATA
   E306 - ABNORMAL GOVERNOR POTENTIOMETER SIGNALS
   E308 - ABNORMAL FUEL DIAL SIGNALS
   E315 - SHORT IN BATTERY RELAY SYSTEM
   E316 - STEP OUT IN GOVERNOR MOTOR
   E317 - OPEN IN GOVERNOR MOTOR PHASE "A" AND "B"
   E318 - SHORT IN GOVERNOR MOTOR PHASE "A" AND "B"
   E501 - MODEL SELECTION FUNCTION NOT PROVIDED
   E502 - MODEL SELECTING SIGNAL FAULT
   A000N1 - ENGINE SPEED OUT OF RANGE AT HIGH IDLE
   A000N2 ENGINE SPEED OUT OF RANGE AT LOW IDLE
   AA10NX - AIR CLEANER CLOGGING
   AB00KE - LOW CHARGING VOLTAGE
      S/N A86001-A86216
      S/N A86217-UP
   B@BAZG - ABNORMALLY LOWERED ENGINE OIL PRESSURE
   B@BAZK - ABNORMALLY LOWERED ENGINE OIL LEVEL
   B@BCNS - ENGINE COOLING WATER OVERHEATING
   B@BCZK ABNORMALLY LOWERED RADIATOR WATER LEVEL
   B@HANS - HYDRAULIC OIL OVERHEATING
   ELECTRICAL SYSTEM (E-MODE)
      Information Contained In Troubleshooting Table
      Before Carrying Out Troubleshooting Of E Mode
   E-1 - ENGINE DOES NOT START (ENGINE DOES NO