Technical Workshop Guide: Komatsu D31EX PX-21 Operation & Maintenance Manual
Need to fix your equipment? This professional service guide is the official resource for expert mechanics. It includes specific electrical wiring diagrams and hydraulic troubleshooting steps tailored for this specific model.
This technical documentation for the Komatsu Bulldozer Manual series provides OEM specifications, torque settings, and assembly instructions.
- Official Brand Category: VIEW ALL KOMATSU BULLDOZER MANUAL MANUALS
- Model Focus: High-resolution data for Komatsu D31EX PX-21 Operation & Maintenance Manual.
What's inside this Komatsu Bulldozer Manual manual?
- Engine Overhaul
- Transmission Specs
- Hydraulic Schematics
- Electrical Diagrams
- Diagnostic Codes
- Maintenance Intervals
Komatsu D31EX PX-21 Operation & Maintenance Manual
This manual provides rules and guidelines which will help you use this machine safely and effectively. The precautions in this manual must be followed at all times when performing operation and maintenance.
Most accidents are caused by the failure to follow fundamental safety rules for the operation and maintenance of machines. Accidents can be prevented by knowing beforehand conditions that may cause a hazard when performing the operation and maintenance.
BULLDOZER
D31EX, PX-21
D37EX, PX-21
D39EX, PX-21
SERIAL NUMBER
D31EX-21 – 50501 and up
D31PX-21 – 50501 and up
D37EX-21 – 5709 and up
D37PX-21 – 5709 and up
D39EX-21 -1501 and up
D39PX-21 -1501 and up
Before beginning operation or maintenance, operators and maintenance personnel must always observe
the following points.
Read this manual thoroughly and understand its contents fully. Read the safety messages and safety labels given in this manual carefully so that they should be understood fully.
Keep this manual at the storage location for the Operation and Maintenance Manual given below so that all personnel involved in working on the machine can consult it periodically.
In case this manual should be lost or damaged, immediately contact Komatsu or your Komatsu distributor
to obtain a new copy.
When you sell the machine, make sure that this manual should be provided to the new owner together
with the machine.
In this manual, measurements are expressed in international standard units (SI). For the reference purpose, weight units used in the past are also displayed in.
