Komatsu PC300-5, PC300LC-5, PC300LC-5K, PC300HD-5, PC300LC-5 MIGHTY, PC400-5, PC400LC-5, PC400HD-5, PC400LC-5 MIGHTY Excavator Operation & Maintenance Manual
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Sample pages from the Komatsu PC300-5, PC300LC-5, PC300LC-5K, PC300HD-5, PC300LC-5 MIGHTY, PC400-5, PC400LC-5, PC400HD-5, PC400LC-5 MIGHTY Excavator Operation & Maintenance Manual manual
Purchase Information
Technical Specifications
- Document Number / Seller:
- 28434 / Kathleen Boyd
- File Size:
- 48.91 MB
- File Type:
- Language:
- English
- Pages:
- 748
- Printable:
- Yes
- Estimated Download Time:
- 1 Minutes
- Delivery Format:
- Digital (PDF) - Instant Access
- Category:
- Excavator
- Brand:
- Komatsu
- Reviewed and Approved:
- Dec 20, 2025
Komatsu Models and Parts Covered in this Excavator Manual
- PC300-5 (1988-1994)
- PC300LC-5 (1988-1994)
- PC300LC-5K (1988-1994)
- PC300HD-5 (1988-1994)
- PC300-5 Mighty (1988-1994)
- PC300LC-5 Mighty (1988-1994)
- PC400-5 (1989-1995)
- PC400LC-5 (1989-1995)
- PC400HD-5 (1989-1995)
- PC400-5 Mighty (1989-1995)
- PC400LC-5 Mighty (1989-1995)
- PC400-5 Loading Shovel (1989-1995)
- PC400LC-5 Loading Shovel (1989-1995)
Complete Manual Information
Komatsu Hydraulic Excavator PC300 & PC400 Series Shop Manual (1988-1995)
Take Control of Your Heavy Machinery Maintenance with the Definitive Factory Service Guide
This professional-grade Shop Manual (CEBM207077) is the essential resource for owners, operators, and mechanics working with Komatsu’s legendary Dash-5 series excavators. Covering everything from the standard PC300-5 to the specialized PC400LC-5 Loading Shovel, this manual provides the technical depth required to minimize downtime and ensure peak performance.
Comprehensive Model Coverage:
This manual is specifically engineered for the following Komatsu models:
- PC300-5, PC300LC-5, PC300LC-5K
- PC300HD-5 (Heavy Duty)
- PC300-5 Mighty & PC300LC-5 Mighty
- PC400-5, PC400LC-5, PC400HD-5
- PC400-5 Mighty & PC400LC-5 Mighty
- PC400-5 & PC400LC-5 Loading Shovel
Applicable Serial Numbers:
- PC300/LC-5 Series: 20001 and up
- PC300/LC-5 Mighty & HD Series: 21401 and up
- PC400/LC-5 Series: 20001 and up
- PC400/LC-5 Mighty & HD Series: 20603 and up
Why This Manual is a Must-Have for Every Jobsite:
- Precision Troubleshooting: Navigate complex issues using factory-spec diagnostic charts that correlate problems directly to their causes.
- OLSS System Insights: Gain a master-level understanding of the Open-Center Load Sensing System (OLSS) for optimal hydraulic efficiency.
- Detailed Structure & Function: Move beyond basic repairs with in-depth explanations of every component, from the swing machinery to the final drive reduction ratios.
- Factory Maintenance Standards: Access critical judgment standards for inspecting disassembled parts to determine if components should be rebuilt or replaced.
- Safety First: Includes a dedicated section on essential safety precautions for high-pressure systems, welding repairs, and heavy component hoisting.
Technical Highlights Included:
- Complete System Schematics: Detailed hydraulic circuit diagrams and electrical wiring maps for all serial number ranges.
- Engine Performance Specs: Testing and adjusting procedures for S6D108-1 and S6D125-1 engines, including fuel injection timing and compression measurements.
- Hydraulic Mastery: Specific instructions for testing main relief valves, charging pump pressure, and PPC valve outputs.
- Undercarriage & Wear Limits: Accurate measurement tables for track shoes, idlers, and rollers to track equipment life.
- Torque & Lubrication Tables: Comprehensive lists of tightening torques, coating materials (Adhesives/Sealants), and fluid capacities for various ambient temperatures.
Optimized for Mobile & Shop Use
Designed with clear headings and concise bullet points, this manual is easy to read on smartphones and tablets, allowing you to access vital specs directly at the machine. Whether you are performing a simple oil change or a complete final drive overhaul, arm yourself with the exact knowledge used by Komatsu factory technicians.
Download Instructions for Komatsu Excavator Manual
Frequently Asked Questions - Komatsu Excavator Manual
Is this manual suitable for beginners?
Yes, this Komatsu manual is designed for both professional technicians and DIY enthusiasts. It includes step-by-step procedures with clear illustrations and safety guidelines for Excavator maintenance and repair.
What file format will I receive?
You will receive this manual as a PDF file (48.91 MB), which is compatible with all devices. The manual is fully searchable and printable for your convenience.
How quickly can I access the manual after purchase?
You'll receive instant access to your Komatsu Excavator manual immediately after payment completion. The download link is valid for 3 days, with lifetime re-download guarantee.
Can I print specific sections of the manual?
Absolutely! This digital manual allows you to print any section you need, from individual pages to complete chapters, making it perfect for workshop use.
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