2003 Komatsu PW130ES-6K Hydraulic Excavator Shop Manual

Technical Scope for the 2003 Komatsu PW130ES-6K

• Covers 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 coverage tables
• File downloads to your account within seconds of checkout
• Fully indexed PDF search covers every chapter and appendix
• OCR text layer lets you jump to a torque spec by keyword
• This 2003 first edition is the primary reference manual for the K32001, K34001, and K35001 machine series, documenting the original factory specifications prior to later design revisions

Component and System Documentation

This factory service compendium details the architecture and operational principles of the Komatsu PW130ES-6K. The manual provides a deep dive into the engine-related components, radiator and oil cooler assemblies, and the complex hydraulic power train. It segments the excavator into critical functional blocks, including the swing machinery, undercarriage configurations, and transmission layouts. Detailed sections address the brake and steering circuits, including Italian-market variants, and the intricacies of the suspension lock cylinder. The document outlines the structure of the hydraulic control valve, providing essential context for the main relief valves, pressure compensation valves, and the various shuttle valves that manage oil flow.

Hydraulic Performance and System Specifications

Understanding factory service documentation requires a review of the provided operational thresholds. The manual specifies a 2450 rpm high idling speed for the engine and a 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 clearly defined: the suspension lock cylinder maintains 40.0 MPa, while the priority valve spring pressure is set at 7 bar. The gear pump for the brake and steering circuit is specified at 19 cc/rev with a rated pressure of 250 bar. Reference for the Closed Center Load Sensing System (CLSS) includes flow divider logic and regeneration circuit operation for the boom and arm. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. An official 2003 Komatsu workshop manual covering the PW130ES-6K excavator, documenting the structure, function, and technical specifications for the K32001 and higher serial number range units.