Komatsu PC138US-2, PC138USLC-2 Hydraulic Excavator Operation and Maintenance Manual (TEN00003-00)
These short-tail Komatsu PC138US-2 and PC138USLC-2 excavators usually live in tight urban jobs, roadwork, and utility trenches where you’re swinging close to traffic, walls, and services. This Operation and Maintenance Manual is what I’d use to set a solid service rhythm, so the machine stays predictable day after day. When a boom function starts getting sluggish, for example, I’d go to this manual to verify basic checks, filter change timing, and daily inspection points before tearing into components.
Applications & Use Cases
- Plan preventive maintenance so you can schedule services around night or weekend shutdowns instead of losing a workday.
- Walk operators through daily and weekly inspections to catch loose hardware, leaks, and cracked hoses before they fail under load.
- Trace early hydraulic issues by following the recommended checks in a logical order, from simple visual inspections to basic function tests.
- Align maintenance records across a fleet so different operators and shifts service the machines the same way.
- Prepare for seasonal changes, adjusting inspection focus when moving between cold starts, mud, or dusty demo sites.
FAQ
Q: Can I keep this manual on a tablet in the field?
A: Yes, it’s well-suited for digital use; you can zoom diagrams and quickly search terms while standing next to the machine.
Q: Is it worth printing parts of it?
A: Many techs print the key inspection and service pages, laminate them, and keep them in the service truck for quick reference.
Safety Note
Always lock out, tag, and properly support the machine before doing any inspection or service work.
📘 Show Index
Komatsu PC138US-2, PC138USLC-2 Hydraulic Excavator Index:
- MAIN MENU
- COVER
- FOREWORD
- FOREWORD
- SAFETY INFORMATION
- INTRODUCTION
- PRODUCT INFORMATION
- PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE
- ENGINE SERIAL NUMBER PLATE AND ITS LOCATION
- EPA NAMEPLATE
- SERVICE METER LOCATION
- YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR
- CONTENTS
- SAFETY
- SAFETY INFORMATION
- SAFETY LABELS
- LOCATION OF SAFETY LABELS
- SAFETY LABELS
- SAFETY INFORMATION
- SAFETY RULES
- IF ABNORMALITIES ARE FOUND
- WORKING WEAR AND PERSONAL PROTECTIVE ITEMS
- FIRE EXTINGUISHER AND FIRST AID KIT
- SAFETY EQUIPMENT
- KEEP MACHINE CLEAN
- KEEP OPERATOR’S COMPARTMENT CLEAN
- LEAVING OPERATOR’S SEAT WITH LOCK
- HANDRAILS AND STEPS
- MOUNTING AND DISMOUNTING
- NO PERSONS ON ATTACHMENTS
- DO NOT GET CAUGHT IN ARTICULATED PORTION
- BURN PREVENTION
- FIRE PREVENTION AND EXPLOSION PREVENTION
- ACTION IF FIRE OCCURS
- WINDSHIELD WASHER FLUID
- FALLING OBJECTS, FLYING OBJECTS AND INTRUDING OBJECTS PREVENTION
- ATTACHMENT INSTALLATION
- ATTACHMENT COMBINATIONS
- CAB WINDOW GLASSES
- UNAUTHORIZED MODIFICATIONS
- SAFETY AT JOBSITE
- WORKING ON LOOSE GROUND
- DISTANCE TO HIGH VOLTAGE CABLES
- ENSURE GOOD VISIBILITY
- VENTILATION FOR ENCLOSED AREA
- SIGNALMAN’S SIGNAL AND SIGNS
- EMERGENCY EXIT FROM OPERATOR’S CAB
- ASBESTOS DUST HAZARD PREVENTION
- SAFETY MACHINE OPERATION
- STARTING ENGINE
- OPERATION
- TRANSPORTATION
- BATTERY
- TOWING
- LIFTING OBJECTS WITH BUCKET
- SAFETY MAINTENANCE INFORMATION
- WARNING TAG
- KEEP WORK PLACE CLEAN AND TIDY
- APPOINT LEADER WHEN WORKING WITH OTHERS
- STOP ENGINE BEFORE CARRYING OUT MAINTENANCE
- TWO WORKERS FOR MAINTENANCE WHEN ENGINE IS RUNNING
- PROPER TOOLS
- ACCUMULATOR
- PERSONNEL
- ATTACHMENTS
- WORK UNDER THE MACHINE
- NOISE
- WHEN USING HAMMER
- WELDING WORKS
- REMOVING BATTERY TERMINALS
- SAFETY FIRST WHEN USING HIGH-PRESSURE GREASE TO ADJUST TRACK TENSION
- DO NOT DISASSEMBLE RECOIL SPRINGS
- SAFETY RULES FOR HIGH-PRESSURE OIL
- SAFETY HANDLING HIGH-PRESSURE HOSES
- WASTE MATERIALS
- AIR CONDITIONER MAINTENANCE
- COMPRESSED AIR
- PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
- OPERATION
- MACHINE VIEW ILLUSTRATIONS
- OVERALL MACHINE VIEW
- CONTROLS AND GAUGES
- DETAILED CONTROLS AND GAUGES
- MONITORING SYSTEM
- SWITCHES
- CONTROL LEVERS AND PEDALS
- SUN ROOF
- WINDSHIELD
- SLIDING DOOR
- EMERGENCY ESCAPE HAMMER
- CAP WITH LOCK
- ENGINE HOOD
- CAB REAR COVER
- PUMP ROOM DOOR, BATTERY ROOM DOOR
- DOOR AT FRONT OF TOOL BOX
- FUSE
- FUSIBLE LINK
- AUXILIARY ELECTRIC POWER
- CONTROLLERS
- AIR CONDITIONER CONTROLS
- RADIO
- ACCUMULATOR
- OPERATION MANUAL STORAGE
- TOOL BOX
- GREASE PUMP HOLDER
- HOT AND COOL BOX
- ASHTRAY
- FIRE EXTINGUISHER
- MACHINE OPERATIONS AND CONTROLS
- BEFORE STARTING ENGINE
- STARTING ENGINE
- AFTER STARTING ENGINE
- STOPPING THE ENGINE
- MACHINE OPERATION
- STEERING THE MACHINE
- SWINGING
- WORK EQUIPMENT CONTROLS AND OPERATIONS
- WORKING MODE
- PROHIBITED OPERATIONS
- GENERAL OPERATION INFORMATION
- TRAVELING ON SLOPES
- ESCAPE FROM MUD
- RECOMMENDED APPLICATIONS
- BUCKET REPLACEMENT AND INVERSION
- PARKING MACHINE
- MACHINE INSPECTION AFTER DAILY WORK
- LOCKING
- ROAD LINERS
- TRANSPORTATION
- TRANSPORTATION PROCEDURE
- LOADING AND UNLOADING WITH TRAILER
- LIFTING MACHINE
- COLD WEATHER OPERATION
- COLD WEATHER OPERATION INFORMATION
- AFTER DAILY WORK COMPLETION
- AFTER COLD WEATHER SEASON
- LONG TERM STORAGE
- BEFORE STORAGE
- DURING STORAGE
- AFTER STORAGE
- TROUBLES AND ACTIONS
- RUNNING OUT OF FUEL
- PHENOMENA THAT ARE NOT FAILURES
- TOWING THE MACHINE
- LIGHTWEIGHT TOWING HOOK
- SEVERE JOB CONDITION
- DISCHARGED BATTERY
- OTHER TROUBLE
- MAINTENANCE
- MAINTENANCE INFORMATION
- OUTLINE OF SERVICE
- HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC
- ELECTRIC SYSTEM MAINTENANCE
- WEAR PARTS
- RECOMMENDED FUEL, COOLANT, AND LUBRICANT
- USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE
- RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN KOMATSU GENUINE OIL
- TIGHTENING TORQUE SPECIFICATIONS
- SAFETY CRITICAL PARTS
- SAFETY CRITICAL PARTS LIST
- MAINTENANCE SCHEDULE
- MAINTENANCE SCHEDULE CHART
- MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER
- MAINTENANCE PROCEDURE
- INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS)
- WHEN REQUIRED
- CHECK BEFORE STARTING
- EVERY 50 HOURS MAINTENANCE
- EVERY 100 HOURS MAINTENANCE
- EVERY 250 HOURS MAINTENANCE
- EVERY 500 HOURS MAINTENANCE
- EVERY 1000 HOURS MAINTENANCE
- EVERY 2000 HOURS MAINTENANCE
- EVERY 4000 HOURS MAINTENANCE
- EVERY 5000 HOURS MAINTENANCE
- SPECIFICATIONS
- ATTACHMENTS, OPTIONS
- ATTACHMENTS AND OPTIONS – GENERAL INFORMATION
- SAFETY FIRST
- ATTACHMENT INSTALLATION
- BUCKET WITH HOOK
- HOOK CONDITION
- PROHIBITED OPERATIONS
- AIR CONDITIONER
- AIR CONDITIONER CONTROL PANEL
- AIR CONDITIONER CONTROLS
- AIR CONDITIONER MAINTENANCE
- MACHINE READY FOR ATTACHMENT
- LOCATIONS
- HYDRAULIC CIRCUIT
- ATTACHMENT REMOVAL AND INSTALLATION
- ATTACHMENT OPERATIONS
- LONG TERM STORAGE
- SPECIFICATIONS
- ATTACHMENT GUIDE
- OTHER ATTACHMENTS
- ATTACHMENT COMBINATIONS
- SELECTION OF TRACK SHOES
- RECOMMENDED ATTACHMENT OPERATIONS
- INDEX
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