234-60-65300 Transmission Pump (Hydraulic Gear Pump) for Komatsu Grader GD705A-4

The 234-60-65300 hydraulic gear pump is commonly listed as a Transmission Pump for Komatsu motor graders, including GD705A-4 and GD705A-4A-N. In parts catalogs it appears under the group “TRANSMISSION PUMP (#23001-)”, and is also referenced as 2346065300. 

Function

This pump supplies hydraulic flow/pressure required for transmission-related circuits and control operation. Stable pump output helps maintain consistent system pressure and reliable machine performance. 

Common symptoms of a worn transmission gear pump

• Low system pressure / slow response

• Abnormal pump noise

• Overheating or unstable operation after warm-up

• Intermittent performance under load

Related part numbers (same section, different function)

In the same catalog family, you may also see other pump assemblies such as 234-60-65400 (often listed for other functions like circle reverse pump in some listings). Always match by S/N and the original part label.