Komatsu D375A-8 Bulldozer Operation and Maintenance Manual (EENAM03603)

On a D375A-8 working in hard rock, overburden, or heavy push in a mine or quarry, this Operation and Maintenance Manual is what I keep handy to keep the dozer reliable day after day. It walks you through how to run the machine correctly and how to stay on top of routine checks so you don’t find problems the hard way. If, for example, the operator reports sluggish blade response and a hot hydraulic smell at the end of shift, I use this manual to verify the proper inspection steps, trace likely causes, and get the machine back in the dirt with minimal downtime.

Applications & Use Cases

Plan daily and weekly inspections so operators catch leaks, loose hardware, and track issues before they turn into failures.
Set a realistic maintenance rhythm for filters, wear parts, and adjustments based on actual site conditions.
Verify correct warm-up and shutdown habits to avoid thermal shock and extend component life.
Guide operators on proper dozing techniques to reduce stress on the powertrain and undercarriage.
Document service work and checks so you can track patterns of wear and schedule major work in advance.

FAQ

Q: Can I keep this manual on a tablet in the service truck?

A: Yes, it’s practical to use digitally; you can zoom diagrams and use search to jump straight to the procedure you need.

Q: Is it worth printing sections of this manual?

A: Many techs print the most-used pages and keep them in a binder or plastic sleeves for quick reference at the machine.

Safety Note

Always follow the manual’s safety instructions and lockout procedures before inspecting, adjusting, or servicing the dozer.

📘 Show Index

Komatsu D375A-8 Bulldozer Index:

FOREWORD
- READ THIS MANUAL
- KOMATSU MACHINE OPERATOR PRIVACY POLICY
- SAFETY INFORMATION
- NOISE
- VIBRATION LEVELS
  - VIBRATION – OPERATING CONDITION
  - GUIDE TO REDUCE VIBRATION LEVELS ON MACHINE
- INTRODUCTION
  - MAIN USE OF MACHINE
  - DIRECTIONS OF MACHINE
  - VISIBILITY FROM OPERATOR’S SEAT
- ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS EMISSION
- PRODUCT INFORMATION
  - LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE
  - LOCATION OF ENGINE NUMBER PLATE
  - LOCATION OF BLADE SERIAL NO. PLATE
  - FLUORINATED GREENHOUSE GASES
  - LOCATION OF RIPPER SERIAL NO. PLATE
  - LOCATION FOR ROPS AND FOPS PLATE
  - SERVICE METER LOCATION
  - YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR
- SERIAL PLATE
- DECLARATION OF CONFORMITY
- TABLE OF CONTENTS
SAFETY
- SAFETY LABELS
  - LOCATION OF SAFETY LABELS
  - CONTENTS OF SAFETY LABELS
- GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE
  - PRECAUTIONS BEFORE STARTING OPERATION
  - PREPARATIONS FOR SAFE OPERATION
  - PRECAUTIONS TO PREVENT FIRE
  - PRECAUTIONS WHEN GETTING ON OR OFF MACHINE
  - DO NOT GET CAUGHT IN WORK EQUIPMENT
  - PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES
  - UNAUTHORIZED MODIFICATION
  - PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS
  - PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING
- PRECAUTIONS FOR OPERATION
  - PRECAUTIONS FOR JOBSITE
  - START ENGINE
  - PRECAUTIONS FOR OPERATION
  - PRECAUTIONS FOR TRANSPORTATION
  - TOWING AND BEING TOWED
- PRECAUTIONS FOR MAINTENANCE
  - PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE
  - PRECAUTIONS FOR CHECK AND MAINTENANCE
OPERATION
- GENERAL VIEW
  - MACHINE EQUIPMENT NAME
  - CONTROLS AND GAUGES NAMES
- EXPLANATION OF COMPONENTS
  - EXPLANATION OF MACHINE MONITOR EQUIPMENT
  - SWITCHES
  - CONTROL LEVERS AND PEDALS
  - OTHER EQUIPMENT
- MACHINE OPERATIONS AND CONTROLS
  - CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE
  - METHOD FOR STARTING ENGINE
  - METHOD FOR OPERATIONS AND CHECKS AFTER STARTING ENGINE
  - METHOD FOR STOPPING ENGINE
  - METHOD FOR STARTING MACHINE (TRAVEL FORWARD AND REVERSE) AND STOPPING MACHINE
  - SHIFT GEARS
  - METHOD FOR SWITCHING BETWEEN FORWARD AND REVERSE
  - METHOD FOR STEERING MACHINE
  - RECOMMENDED WORKING MODES FOR WORKS
  - PRECAUTIONS FOR OPERATION
  - PRECAUTIONS WHEN OPERATING ON SLOPE
  - PRECAUTIONS FOR USING BRAKE
  - DO NOT OPEN DOOR WHILE OPERATING MACHINE
  - DO NOT MODIFY CAB GLASS IN ANY WAY THAT WILL OBSTRUCT THE VIEW
  - PRECAUTIONS FOR FLOATING OPERATION
  - PRECAUTIONS FOR BLIND SPOTS CAUSED BY CAB AND ROPS STRUCTURES
  - RECOMMENDED APPLICATIONS
  - EFFECTIVE USE OF RIPPER
  - OPERATING METHOD FOR RIPPING WORK
  - METHOD FOR ADJUSTING WORK EQUIPMENT
  - TIPS FOR LONGER UNDERCARRIAGE LIFE
  - METHOD FOR PARKING MACHINE
  - METHOD FOR CHECKING AFTER FINISHING WORK
  - LOCK
- HANDLE AIR CONDITIONER
  - EXPLANATION OF AIR CONDITIONER EQUIPMENT
  - METHOD FOR OPERATING AIR CONDITIONER
- HANDLE RADIO
  - EXPLANATION OF RADIO EQUIPMENT
  - METHOD FOR CONTROLLING RADIO
  - ANTENNA
- TRANSPORTATION
  - TRAVEL ON ROAD
  - PRECAUTIONS FOR TRANSPORTING MACHINE
  - TRANSPORTATION PROCEDURE
  - REMOVE CAB
  - LOADING AND UNLOADING WITH TRAILER
  - METHOD FOR LIFTING MACHINE
- COLD WEATHER OPERATION
  - COLD WEATHER OPERATION INFORMATION
  - PRECAUTIONS AFTER DAILY WORK COMPLETION
  - AFTER COLD WEATHER SEASON
- PRECAUTIONS FOR LONG-TERM STORAGE
  - PREPARATION FOR LONG-TERM STORAGE
  - MAINTENANCE DURING LONG-TERM STORAGE
  - STARTING MACHINE AFTER LONG-TERM STORAGE
- TROUBLES AND ACTIONS
  - ACTIONS WHEN RUNNING OUT OF FUEL
  - PRECAUTIONS FOR TOWING MACHINE
  - PRECAUTIONS FOR DISCHARGED BATTERY
  - OTHER TROUBLE
MAINTENANCE
- PRECAUTIONS FOR MAINTENANCE
  - CHECK SERVICE METER READING
  - KOMATSU GENUINE REPLACEMENT PARTS
  - KOMATSU GENUINE LUBRICANTS
  - ALWAYS USE CLEAN WASHER FLUID
  - FRESH AND CLEAN LUBRICANTS
  - CHECK DRAINED OIL AND USED FILTER
  - PRECAUTIONS FOR REFILLING OIL OR FUEL
  - WELDING INSTRUCTIONS
  - DO NOT DROP THINGS INSIDE MACHINE
  - PRECAUTIONS FOR KDPF
  - DUSTY JOBSITES
  - AVOID MIXING OIL
  - LOCK INSPECTION COVERS
  - PRECAUTIONS FOR OPENING AND CLOSING ENGINE SIDE COVER
  - BLEED AIR FROM HYDRAULIC CIRCUIT
  - PRECAUTIONS WHEN INSTALLING HYDRAULIC HOSES
  - CHECKS AFTER INSPECTION AND MAINTENANCE
  - FUEL AND LUBRICANTS TO MATCH THE AMBIENT TEMPERATURE
- OUTLINE OF MAINTENANCE
  - HANDLE OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC
  - HANDLE ELECTRICAL COMPONENTS
  - HANDLE HYDRAULIC COMPONENTS
- STANDARD TIGHTENING TORQUE FOR BOLTS AND NUTS
- MAINTENANCE SCHEDULE
  - MAINTENANCE SCHEDULE TABLE
  - MAINTENANCE INTERVAL WHEN DIESEL FUEL MIXED WITH BIO-FUEL IS USED
- MAINTENANCE PROCEDURE
  - INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS)
  - WHEN REQUIRED
  - CHECKS BEFORE STARTING
  - EVERY 250 HOURS MAINTENANCE
  - EVERY 500 HOURS MAINTENANCE
  - EVERY 1000 HOURS MAINTENANCE
  - EVERY 2000 HOURS MAINTENANCE
  - EVERY 4000 HOURS MAINTENANCE
  - EVERY 4500 HOURS MAINTENANCE
  - EVERY 8000 HOURS MAINTENANCE
  - EVERY 9000 HOURS MAINTENANCE
SPECIFICATIONS
- SPECIFICATIONS
  - SPECIFICATIONS : D375A-8
ATTACHMENTS AND OPTIONS
- GENERAL PRECAUTIONS
  - PRECAUTIONS FOR SAFETY
- ATTACHMENTS AND OPTIONS
  - TRACK SHOES SELECTION
- SELECTION PROCEDURE OF RIPPER POINT
- HANDLE EXTERNAL POWER SUPPLY ENGINE PREHEATER
  - INSTALLATION PROCEDURES FOR EXTERNAL POWER SUPPLY SYSTEM FOR EXTERNAL POWER SUPPLY ENGINE PREHEATER
  - FABRICATE EXTERNAL POWER SUPPLY CABLE
  - INSTALL EXTERNAL POWER SUPPLY SYSTEM
  - METHOD FOR STARTING ENGINE IN COLD WEATHER
- METHOD FOR USING DUAL TILT DOZER EFFECTIVELY
  - BLADE STATE
  - DOZING WORK
- HANDLE HYDRAULIC TYPE LADDER
  - METHOD FOR OPERATING HYDRAULIC TYPE LADDER
  - ACTIONS IF MACHINE DOES NOT MOVE BY FAILURE
  - WHEN REQUIRED
  - EVERY 1000 HOURS MAINTENANCE
  - EVERY 4000 HOURS MAINTENANCE
- MACHINE WITH MINING SPECIFICATION
  - GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE
  - PRECAUTIONS FOR OPERATION
  - SWITCHES
  - BATTERY ISOLATOR AND STARTING MOTOR ISOLATOR
  - CHECKS BEFORE STARTING
  - METHOD FOR OPERATIONS AND CHECKS BEFORE STARTING ENGINE
  - START ENGINE WITH JUMPER CABLES
  - PERFORM KOWA (Komatsu Oil Wear Analysis)
  - WHEN REQUIRED
  - EVERY 250 HOURS MAINTENANCE
  - EVERY 500 HOURS MAINTENANCE
  - EVERY 1000 HOURS MAINTENANCE
  - EVERY 2000 HOURS MAINTENANCE
  - CONSUMABLE PARTS
REPLACEMENT PARTS
- PERIODIC REPLACEMENT OF DEFINED LIFE PARTS
  - DEFINED LIFE PARTS LIST
- CONSUMABLE PARTS
  - CONSUMABLE PARTS
- RECOMMENDED FUEL, COOLANT, AND LUBRICANT
  - LUBRICATION CHART
  - METHOD FOR USING FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE
  - RECOMMENDED BRANDS AND QUALITIES OTHER THAN KOMATSU GENUINE OILS
INDEX