Komatsu D275A-5 Bulldozer Operation and Maintenance Manual (EEAM024001)

Running a D275A-5 all day in push, ripping, and slot dozing work is hard on everything—undercarriage, cooling system, hydraulics. This Operation and Maintenance Manual is what I’d keep on hand to set a solid service rhythm, so the dozer is ready when the trucks are. When, for example, the machine starts running hotter on long uphill pushes, this is what I’d use to walk you through proper daily checks, fan and radiator inspection logic, and basic operator-side maintenance before we ever call in a major repair.

Applications & Use Cases

Plan preventive maintenance so greasing, filter changes, and walk‑around checks line up with your production schedule.
Trace early wear on undercarriage, blades, and ripper components before they turn into unplanned downtime.
Verify operator checks at shift start/end, making sure nothing critical gets skipped in a hurry.
Adjust operating habits for steep grades, rocky cuts, or long pushes to reduce stress on drivetrain and frame.
Support troubleshooting by ruling out simple maintenance and operation issues before deeper diagnostics.

FAQ

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

A: Yes, it’s practical to use digitally; you can zoom diagrams and search terms instead of flipping pages.

Q: Is it worth printing certain pages?

A: Print the daily/periodic check pages and keep them in a plastic sleeve in the service truck for quick reference.

Safety Note

Always follow the safety instructions in the manual before inspecting, servicing, or operating the dozer.

📘 Show Index

Komatsu D275A-5 Bulldozer Index:

FOREWORD
- FOREWORD
- SAFETY INFORMATION
- INTRODUCTION
  - FRONT/REAR, LEFT/RIGHT DIRECTIONS OF MACHINE
- NECESSARY INFORMATION
  - MACHINE SERIAL NO. PLATE AND POSITION
  - ENGINE SERIAL NO. PLATE AND POSITION
  - BLADE SERIAL NO. PLATE POSITION
  - RIPPER SERIAL NO. PLATE POSITION
  - POSITION OF SERVICE METER
  - TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR
  - FOREWORD
  - SAFETY
  - OPERATION
  - MAINTENANCE
  - SPECIFICATIONS
  - ATTACHMENTS, OPTIONS
  - INDEX
  - COLOPHON
SAFETY
- SAFETY
- SAFETY LABELS
  - POSITIONS OF SAFETY PICTOGRAMS
  - SAFETY LABELS
- GENERAL PRECAUTIONS
- PRECAUTIONS FOR OPERATION
  - BEFORE STARTING ENGINE
  - OPERATION
  - TRANSPORTATION
  - BATTERY
  - TOWING
- PRECAUTIONS FOR MAINTENANCE
OPERATION
- GENERAL VIEW
  - GENERAL VIEW OF MACHINE
  - GENERAL VIEW OF CONTROLS AND GAUGES
- EXPLANATION OF COMPONENTS
  - FRONT PANEL
  - SWITCHES
  - CONTROL LEVERS, PEDALS
  - DUST INDICATOR
  - POWER SOURCE
  - FUSE BOX
  - FUSIBLE LINK
  - DOOR OPEN LOCK
  - SASH GLASS INTERMEDIATE LOCK
  - DOOR POCKET
  - ASHTRAY
  - TOOL BOX
  - CAR STEREO, HANDLING
  - AIR CONDITIONER, HANDLING
  - ACCUMULATOR, HANDLING
- OPERATION
  - CHECK BEFORE STARTING ENGINE, ADJUST
  - STARTING ENGINE
  - OPERATIONS AND CHECKS AFTER STARTING ENGINE
  - STOPPING ENGINE
  - CHECK AFTER STOPPING ENGINE
  - MOVING MACHINE
  - STOPPING MACHINE
  - SHIFTING GEAR
  - SHIFTING BETWEEN FORWARD AND REVERSE
  - STEERING MACHINE
  - PROHIBITED OPERATIONS
  - PRECAUTIONS FOR OPERATION
  - PARKING MACHINE
  - CHECK AFTER FINISHING WORK
  - LOCKING
  - WORK POSSIBLE USING BULLDOZER
  - RIPPER OPERATION
  - OPERATING METHOD FOR RIPPING OPERATIONS
  - ADJUSTING POSTURE OF WORK EQUIPMENT
  - TIPS FOR LONGER UNDERCARRIAGE LIFE
- TRANSPORTATION
  - TRANSPORTATION PROCEDURE
  - LOADING, UNLOADING WORK
  - PRECAUTIONS FOR LOADING
  - METHOD OF LIFTING MACHINE
  - PRECAUTIONS FOR TRANSPORTATION
  - TRAVELING ON ROADS
  - REMOVAL OF CAB
  - INSTALLATION OF CAB
- COLD WEATHER OPERATION
  - PRECAUTIONS FOR LOW TEMPERATURE
  - AFTER COMPLETION OF WORK
  - AFTER COLD WEATHER
- LONG-TERM STORAGE
  - BEFORE STORAGE
  - DURING STORAGE
  - AFTER STORAGE
- TROUBLESHOOTING
  - AFTER RUNNING OUT OF FUEL
  - METHOD OF TOWING MACHINE
  - IF BATTERY IS DISCHARGED
  - OTHER TROUBLE
MAINTENANCE
- GUIDES TO MAINTENANCE
- OUTLINES OF SERVICE
  - HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC
  - OUTLINE OF ELECTRIC SYSTEM
- WEAR PARTS
  - WEAR PARTS LIST
- 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
- STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS
  - TORQUE LIST
- PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
  - SAFETY CRITICAL PARTS
- MAINTENANCE SCHEDULE CHART
  - MAINTENANCE SCHEDULE CHART
- SERVICE PROCEDURE
  - INITIAL 250 HOURS SERVICE (ONLY AFTER THE FIRST 250 HOURS)
  - WHEN REQUIRED
  - CHECK BEFORE STARTING
  - EVERY 250 HOURS SERVICE
  - EVERY 500 HOURS SERVICE
  - EVERY 1000 HOURS SERVICE
  - EVERY 2000 HOURS SERVICE
  - EVERY 4000 HOURS SERVICE
  - EVERY 8000 HOURS SERVICE
SPECIFICATIONS
- SPECIFICATIONS
ATTACHMENTS, OPTIONS
- GENERAL PRECAUTIONS
  - PRECAUTIONS RELATED TO SAFETY
- SELECTION OF TRACK SHOE
  - SELECTION OF TRACK SHOES
- PROCEDURE FOR SELECTING RIPPER POINT
  - PROCEDURE FOR SELECTING RIPPER POINT
- CAP WITH LOCK, HANDLING
  - METHOD OF OPENING AND CLOSING CAP WITH LOCK
- EFFECTIVE METHOD OF OPERATION FOR DUAL TILT DOZER
  - BLADE CONDITION
  - DOZING WORK
  - LEVELING (SPREADING) OPERATION
  - DITCHING OPERATION
  - BOULDER RAISING OPERATION
  - SIDE-CUTTING OPERATIONS
  - HORIZONTAL DOZING OPERATIONS FROM SIDE SLOPE (ROUGH GROUND)
- SHOE SLIP CONTROL
  - MODE SELECTION SWITCH PANEL (SHOE SLIP CONTROL)
  - EFFECTIVE USE OF MODE SELECTION SYSTEM
  - IF MODE SELECTION SYSTEM FLASHES
- HANDLING MACHINES EQUIPPED WITH KOMTRAX
  - BASIC PRECAUTIONS
INDEX
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- <G>
- <H>
- <I>
- <L>
- <M>
- <N>
- <O>
- <P>
- <R>
- <S>
- <T>
- <W>
COLOPHON