Detailed Komatsu WA300-1 and WA320-1 Wheel Loader Shop Manual - Structure and Function, Testing and Adjusting, and Disassembly and Assembly Reference 1988-1994
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Sample pages from the Detailed Komatsu WA300-1 and WA320-1 Wheel Loader Shop Manual - Structure and Function, Testing and Adjusting, and Disassembly and Assembly Reference 1988-1994 manual
Purchase Information
Technical Specifications
- Document Number / Seller:
- 25663 / Mary Robinson
- File Size:
- 90.93 MB
- File Type:
- Language:
- English
- Pages:
- 841
- Printable:
- Yes
- Estimated Download Time:
- 1.86 Minutes
- Delivery Format:
- Digital (PDF) - Instant Access
- Category:
- Wheel Loader
- Brand:
- Komatsu
- Reviewed and Approved:
- Dec 29, 2025
Komatsu Models and Parts Covered in this Wheel Loader Manual
- WA300-1 Wheel Loader (1988-1994)
- WA320-1 Wheel Loader (1988-1994)
- 310G Backhoe Loader (2001-2005)
- 310SG Backhoe Loader (2001-2005)
- 315SG Backhoe Loader (2001-2005)
- 410G Backhoe Loader (2001-2005)
- 710G Backhoe Loader (2001-2005)
Complete Manual Information
Detailed Komatsu WA300-1 and WA320-1 Wheel Loader Shop Manual
Empower your maintenance strategy with the professional-grade Komatsu Shop Manual for WA300-1 and WA320-1 Wheel Loaders. This comprehensive technical reference is the exact documentation used by factory-trained service technicians to diagnose, repair, and overhaul these high-performance machines. Whether you are managing a heavy equipment fleet or performing a DIY restoration, this manual delivers the precise technical data and procedural clarity required to minimize downtime and protect your equipment investment.
Engineered for Legendary Performance
The Komatsu WA300-1 and WA320-1 are built for demanding earthmoving tasks, powered by the high-torque Komatsu S6D105-1 turbocharged engine. This water-cooled, 4-cycle direct-injection engine delivers a robust 143 HP at 2,300 rpm, providing the 11,400 kg of maximum traction force these loaders are known for. To maintain this level of performance, generic service guides are insufficient. This shop manual provides specific engine performance targets, including a compression pressure of 29 kg/cm² and a high idling speed range of 2,480–2,580 rpm.
Precise Model and Serial Number Coverage
This manual is meticulously tailored for the following Komatsu models and serial number ranges:
- Komatsu WA300-1 Wheel Loader (Serial No. 10001 and up)
- Komatsu WA300-1 Wheel Loader (Serial No. 20001 and up)
- Komatsu WA320-1 Wheel Loader (Serial No. 10001 and up)
Deep-Dive Technical Content
Beyond routine maintenance, this manual provides exhaustive "Structure and Function" chapters that act as the technical foundation for advanced troubleshooting. You will find:
- Engine Systems & Performance: Full specifications for the S6D105-1 engine, including valve clearance settings (Intake 0.25mm / Exhaust 0.45mm) and detailed fuel injection timing procedures at 18° B.T.D.C.
- Power Train Precision: Comprehensive data on the 3-element, single-stage torque converter and the full power shift countershaft transmission system.
- Hydraulic System Metrics: Precise relief valve settings of 210 kg/cm² for work equipment and steering systems, along with bore and stroke data for boom, bucket, and steering cylinders.
- Electrical & Electronic Systems: Complete 24V system schematics, including testing parameters for the 5.5kW starting motor and 35A alternator.
- Maintenance Standards: Clear "Standard Size" and "Repair Limit" tables for every critical component, allowing for informed "repair vs. replace" decisions.
Practical Utility for the Modern Workshop
Designed for maximum efficiency, the manual features specialized "Network" drawings for disassembly and assembly. These charts show the exact sequence of parts removal, ensuring complex tasks are completed without error. Every component weighing 25 kg or more is clearly marked with a weight symbol to ensure safe hoisting practices. With detailed tables for Komatsu-specific lubricants (like G2-L1 grease) and adhesives (LT-1A, LG-5), you can ensure every seal and joint meets factory specifications.
Eliminate the guesswork and maintain your Komatsu loaders with the precision of a factory technician. This shop manual is your essential tool for ensuring your WA300-1 or WA320-1 remains the reliable workhorse of your job site.
Download Instructions for Komatsu Wheel Loader Manual
Frequently Asked Questions - Komatsu Wheel Loader 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 Wheel Loader maintenance and repair.
What file format will I receive?
You will receive this manual as a PDF file (90.93 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 Wheel Loader 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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