Kobelco SK300LC Mark IV Excavator Service Manual

Kobelco SK300LC Mark IV Excavator Parts Manual

Get the exact part numbers and assembly diagrams you need for your Kobelco SK300LC Mark IV Excavator. This official OEM catalog covers serial numbers YCU0603, YCU0607, and subsequent builds (ASN YCU0611). It delivers factory-level technical depth directly to your workshop via instant download.

Whether you are rebuilding the swing motor or tracing a hydraulic line, accurate documentation prevents costly ordering mistakes. The 437-page PDF features a fully searchable OCR text layer. Simply type in a keyword or part name and jump straight to the correct component.

• OEM Publication Numbers: YN50VU0001D5, YN50VU0001D3
• 130+ Exploded-View Diagrams: Detailed visual breakdowns of the undercarriage, electrical system, and cab installations.
• High-Resolution Printing: Page spreads remain crisp and completely legible when printed at full size for the shop floor.
• Complete System Breakdowns: Includes highly specific sub-component callouts for hydraulic line service and cabin installation hardware.

Component Assembly Details

This manual breaks down the machine's complete physical structure, starting with a comprehensive filter list for routine maintenance. From there, it moves into detailed schematics of the upper frame, counterweight installations, and swing motor assemblies. You will find exact layouts for critical hydraulic components, including the main tanks and relief valves.

The cabin interior section covers all configurations. It details seating groups, floor plate variants, control boxes, and the operator control lever assemblies. Boom, arm, and mass excavator attachment setups are also fully mapped out to support heavy modifications or repairs.

Technical Specifications & Capacities

Beyond part numbers, the catalog includes essential operational limits and capacities for precise component matching. Key data points include a maximum hydraulic pressure threshold of 385 Kgf/cm², a swing motor hydraulic oil capacity of 4.5 gallons, and a 45-gallon fuel tank limit.

Because field repairs often require quick adaptability, the manual provides practical metric-to-inch hardware substitution guidelines to keep your project moving. You will also find exhaustive electrical system identifiers, mapping out a master repair kit containing 3,777 pieces for wiring harness maintenance.

Safety Note: This manual is intended for component identification and reference purposes. Always rely on certified technicians and follow proper shop protocols when performing heavy equipment service.