1988-1994 Komatsu WA300-1, WA320-1 Wheel Loader Shop Manual

Technical Scope for the 1988–1994 Komatsu WA300-1 and WA320-1

• Built for owners and workshops servicing the 1988–1994 Komatsu WA300-1 and WA320-1 heavy-duty wheel loaders
• Official Komatsu shop manual, publication number 419 WA (includes revision marks for historical reference)
• Features 841 pages of structural diagrams, testing specifications, and assembly procedures
• Cross-reference documentation for Serial No. 10001 and up
• File link appears in your order confirmation straight away
• OCR text layer lets you jump to a torque spec by keyword
• Suitable for printing individual sections for shop-floor use
• This 1988 first edition contains the definitive factory-authorized specifications for the S6D105-1 engine integration

Structural and Mechanical Documentation

The 1988–1994 Komatsu WA300-1 shop manual provides comprehensive technical data across major vehicle systems. Key chapters document the internal structure and function of the engine, power train, steering, brake system, work equipment, and electric/electronic modules. The text offers detailed insights into component assembly, testing criteria, and system diagnostics for heavy machinery maintenance, facilitating a precise understanding of the mechanical hierarchy within the WA300-1 and WA320-1 chassis.

Specification and Calibration Data

This 1988–1994 Komatsu WA300-1 publication contains extensive performance benchmarks for the engine and hydraulic units. The cylinder head bolt torque is specified at 18 kgm (176.5–181.4 Nm) in the assembly data. Intake valve clearance is listed at 0.25 mm in the cylinder head specification table. Engine coolant system capacity is documented at 38 liters for these units. This publication includes specialized testing procedures for hydraulic pressure, fuel injection timing, and electrical wire coding, ensuring adherence to factory standards. Reference how factory workshop documentation is structured to streamline your internal maintenance workflows.

Note: This document provides technical specifications and procedures for reference only — always consult a certified technician before performing service on this heavy equipment.

An official 841-page Komatsu OEM shop manual covering the 1988–1994 WA300-1 and WA320-1 wheel loaders, documenting complete engine, powertrain, hydraulic, and electrical specifications for the 10001-series and up production units.