Komatsu PW130ES-6K Hydraulic Excavator 2003 Shop Manual (P/N U/P UEBM001202)

• Details the 2003 Komatsu PW130ES-6K hydraulic excavators, including both 20 km/h and 30 km/h travel speed configurations
• Official Komatsu publication U/P UEBM001202, printed December 2003
• Contains 47 technical diagrams, 4 primary system chapters, and 3 distinct serial number range tables
• Serves as the primary reference for the K32001, K34001, and K35001 machine series, documenting original factory specifications prior to later design revisions

Component and System Documentation

This factory service manual breaks down the architecture and operational principles of the Komatsu PW130ES-6K. It outlines engine-related components, radiator and oil cooler assemblies, and the complete hydraulic power train. The manual divides the excavator into practical functional sections, such as the swing machinery, undercarriage configurations, and transmission layouts. You will find dedicated chapters on the brake and steering circuits—including Italian-market variants—and the suspension lock cylinder. The document also details the internal structure of the hydraulic control valve, mapping out the main relief valves, pressure compensation valves, and the shuttle valves that manage oil flow.

Hydraulic Performance and System Specifications

Navigating this factory service documentation requires a solid understanding of the machine's operational thresholds. The manual specifies a 2450 rpm high idling speed for the engine and an 8 ± 0.5 mm spool stroke limit for the control valves. Hydraulic capacity is documented at 145 liters, with an optimal operating temperature range of 45–55°C. System pressures are explicitly defined: the suspension lock cylinder maintains 40.0 MPa, while the priority valve spring pressure sits at 7 bar. Furthermore, the gear pump for the brake and steering circuit operates at 19 cc/rev with a rated pressure of 250 bar. References for the Closed Center Load Sensing System (CLSS) include flow divider logic and regeneration circuit operation for the boom and arm. Please remember that all technical data provided here serves as a general overview; safely performing accurate, hands-on work requires consulting the exact values in your OEM documentation to prevent equipment damage or personal injury.