Hitachi EX120-2 Hydraulic Excavator Parts Catalog OEM
465 Pages • 30.87 MB • Instant, Printable PDF
Komatsu Models Covered & Key Technical Specifications
Models: Hitachi EX120-2
Sub-models / Variants: Standard Specification, N. EUROPE (Finland, Sweden, Norway), Rubber Crawler configurations, Long Arm, Short Arm
Trade Names: Hitachi EX120-2 Hydraulic Excavator
Model Years: 1990–
Serial Numbers: 12N-30001–
Technical Data:
- Engine: Isuzu 4BD1T Diesel engine
- Control systems: Hydraulic pilot-operated control system
- Component series: 12N machine series
- Regional variants: Standard and N. Europe specification sets
- Hydraulic configuration: Centralized pump and swing device assemblies
Komatsu Manual Features & Content Preview
- Covers the 1990-onwards Hitachi EX120-2 hydraulic excavator, including standard and Northern Europe regional configurations
- Official manufacturer parts registry for the 12N machine series, detailing thousands of individual components
- 465 pages of exploded-view diagrams, part number tables, and assembly breakdowns for engine, chassis, and hydraulic systems
- Essential reference for identifying components to ensure accurate repair and maintenance part ordering
Component Breakdown and Identification
Navigating complex machinery requires precise documentation. This parts catalog offers a structured breakdown of every system within the EX120-2, starting with the upperstructure and undercarriage assemblies. You get detailed exploded-view drawings that clearly display how components fit together. This includes exact placements for bolts, washers, seals, and specialized hardware. The manual details the frame, counterweight, and engine mounting setups. Technicians will find exhaustive lists breaking down the pilot piping, fuel delivery lines, and control lever mechanisms specific to both standard and Northern European models.
Technical Specifications and Assembly Data
Beyond basic identification, the catalog logs vital assembly data like shim thicknesses and hose routing patterns for high-pressure hydraulic circuits. It highlights components for the Isuzu 4BD1T engine, alongside critical electrical parts and cab trim details. Finding the right part fast is essential for workshop efficiency. To support this, cross-references for replaceable items and updated interchangeable components are provided. Every drawing links directly to tables showing specific part numbers, service codes, and required quantities. Always ensure that any mechanical repair or heavy equipment maintenance is performed by qualified professionals using proper safety protocols to prevent injury or machine damage. This factory-grade registry guarantees you order the correct hardware the first time, eliminating guesswork.
Customer Reviews
Read what our customers say about this Komatsu Excavator manual and share your own experience.