Table of Contents
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Operation &
Maintenance Manual
D31EX, PX-21
D37EX, PX-21
D39EX, PX-21
BULLDOZER
SERIAL NUMBER
D31EX-21
D31PX-21
D37EX-21
D37PX-21
D39EX-21
D39PX-21
WARNING
Unsafe use of this machine may cause serious injury or
death. Operators and maintenance personnel must read
this manual before operating or maintaining this
machine. This manual should be kept inside the cab for
reference and periodically reviewed by all personnel who
will come into contact with the machine.
- 50501 and up
- 50501 and up
- 5501 and up
- 5501 and up
-1501 and up
-1501 and up
EEAM023900
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Table of Contents
Troubleshooting
Related Manuals for Komatsu D39EX-21
Summarization of Contents
Foreword
Safety Information
Provides information on safety precautions, signal words, and safety labels used on the machine.
Introduction
Introduces the machine's purpose and defines directional terms like front, rear, left, and right.
Necessary Information
Details required information for service requests, including serial number plate locations.
Operation
General View
Provides an overview of the machine and its main components, with diagrams.
Explanation of Components
Details various components, controls, gauges, and indicators on the machine's front panel.
Check Before Starting Engine, Adjust
Outlines daily checks required before starting the engine for safe operation.
Starting Engine
Explains the procedures for normal engine starting and starting in cold weather conditions.
Machine Operation
Covers fundamental machine operations like moving, stopping, and shifting gears.
Steering Machine
Details how to steer the machine, including normal and pivot turns.
Precautions for Operation
Provides essential safety guidelines for operating the machine in various conditions.
Transportation
Covers procedures for safely transporting the machine, including loading and securing.
Maintenance
Guide to Maintenance
Provides general guidelines for maintenance, including parts, oils, and welding instructions.
Outline of Service
Outlines service procedures for oil, fuel, coolant, and grease, including oil analysis.
Wear Parts List
Lists wear parts, their part numbers, quantities, and replacement intervals.
Maintenance Schedule Chart
Details the periodic maintenance schedule based on operating hours.
Service Procedure
Provides step-by-step instructions for various maintenance tasks.
Every 50 Hours Service
Covers maintenance tasks to be performed every 50 hours.
Every 250 Hours Service
Covers maintenance tasks to be performed every 250 hours.
Every 500 Hours Service
Covers maintenance tasks to be performed every 500 hours.
Every 1000 Hours Service
Covers maintenance tasks to be performed every 1000 hours.
Every 2000 Hours Service
Covers maintenance tasks to be performed every 2000 hours.
Every 4000 Hours Service
Covers maintenance tasks to be performed every 4000 hours.
Safety
Safety Labels
Explains the safety labels and pictograms used on the machine for hazard communication.
General Precautions
Covers general safety rules, personal protective equipment, and fire prevention measures.
Precautions for Operations
Details safety measures for starting the engine, operating, transporting, and handling the battery.
Attachments, Options
General Precautions
Provides safety precautions related to installing authorized attachments and options.
Handling Hydraulic Ripper
Explains the general view, components, operation, and troubleshooting of the hydraulic ripper.
Deluxe Seat
Details the adjustment and features of the deluxe operator's seat.
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