Komatsu D65EXi-18, D65PXi-18 Dozer Service Manual

Table of Contents

• Index and foreword
• Specification
• Structure, function and maintenance standard
• Standard value table
• Testing and adjusting
• Troubleshooting
• Disassembly and assembly
• Maintenance Standard
• Circuit Diagrams
• Index

Proper service and repair are extremely important for safe machine operation. The service and repair techniques recommended by Komatsu and described in this manual are both effective and safe. Some of these techniques require the use of tools specially designed by Komatsu for the specific purpose.

Manual Extract – Types of gear shift mode

There are Automatic Shift Mode and Manual Shift Mode in the gear shift mode. These modes are changed to each other each time gear shift mode switch (1) is pressed.

Automatic Shift Mode
• When a load is applied, the gear is shifted down automatically.
When the load is reduced, the gear is automatically
shifted up to the maximum usable gear speed automatically.
• The torque converter locks up corresponding to loads and the gear is shifted up to the set maximum gear speed automatically.
In this mode, low fuel consumption and high
working efficiency can be obtained.

Manual Shift Mode
• When a load is applied while the auto shift down is ON, the gear is shifted down automatically. When the load is reduced, however, the gear is not shifted up automatically.
• While the auto shift down is OFF, the operator shifts the gear up and down manually.
• While the auto shift down is ON, the gear is automatically shifted down when a load is applied.
• While the auto shift down is OFF, the gear is not automatically shifted down even when a load is applied.