Komatsu Hydraulic Pumps Guide

Komatsu hydraulic pumps are the heart of many machine hydraulic systems. These pumps generate the flow required to operate work equipment, travel functions, steering circuits, swing systems, and other hydraulic components depending on machine type and configuration.

This guide is intended to help customers understand Komatsu hydraulic pump applications, move into the correct hydraulic sub-category, and continue into the model-based pump hubs when machine-specific research is needed. The Komatsu parts book for the exact machine serial number remains the final authority for fitment.

What Komatsu Hydraulic Pumps Do

Hydraulic pumps supply pressurized hydraulic fluid to the machine’s operating systems. Depending on the machine, those systems may include:

  • Boom, arm, and bucket functions
  • Blade, ripper, or work-equipment functions
  • Travel motors and drive systems
  • Swing systems
  • Auxiliary hydraulic functions

Hydraulic Pump Types

Not every hydraulic pump on a Komatsu machine serves the same role. Continue through the deeper hydraulic pages below:

Example Hydraulic Pump Part Numbers

Use Model Hubs to Narrow the Search

Once you know you are dealing with a hydraulic pump, return to the Komatsu Pumps Guide and move into the model-hub directory to review machine-family pump references such as PC, WA, D, HD, HM, GD, PW, and others.

Common Hydraulic Pump Identification Challenges

  • Multiple hydraulic pump arrangements within the same model family
  • Changes across serial number ranges
  • Main, pilot, or charge sections integrated into larger assemblies
  • Older, rebuilt, or alternate pump references that require cross-checking

Because of these variables, machine model alone is not enough for final confirmation.

Need Help Identifying a Hydraulic Pump?

If you have the machine model, serial number, or a likely hydraulic pump number, use the Komatsu Pump Identification Guide and the Komatsu Pump Cross Reference Guide before final ordering.

For final confirmation, always verify against your Komatsu parts book for the exact machine serial number.