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Hitachi EX120 parts Manual collection

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🏷️ Basic Information Identification Make: Hitachi Model: EX120 Model Variant: Standard, -2, -3, -5 Production Years Covered: 1987 - 2001 👋 Introduction Market Position Target Audience: Excavator owners, operators, and...
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Type: Excavator
Forhandler:
Sku: 60767
Hitachi EX120 parts Manual collectionHitachi EX120 parts Manual collectionHitachi EX120 parts Manual collectionHitachi EX120 parts Manual collection
🏷️ Basic Information
Identification
Make:
Hitachi
Model:
EX120
Model Variant:
Standard, -2, -3, -5
Production Years Covered:
1987 - 2001
👋 Introduction
Market Position
Target Audience:
Excavator owners, operators, and independent technicians.
Competitive Advantage:
Known for reliability, fuel efficiency, and ease of maintenance compared to peers.
Key Features
Engine:
Isuzu 4BD1 or 4BD1T diesel engine (depending on variant).
Hydraulic System:
Variable displacement piston pumps with load-sensing control.
Cab Design:
Spacious operator cab with improved visibility and reduced noise.
📋 Manual Details
Manual Format
Coverage Areas:
Complete disassembly, inspection, and reassembly of all major components.
Page Count:
Approximately 500 - 900 pages across multiple manuals in the collection.
Manual Type:
Factory service and parts manuals.
Language:
English
Format:
PDF (digital download)
📖 Manual Coverage
Systems Covered
Engine:
Complete overhaul procedures, specs, and maintenance.
Hydraulic System:
Pumps, control valves, cylinders, and hydraulic schematic.
Undercarriage:
Track adjustment, final drives, and components.
Swing System:
Swing motor, reduction gear, and swing circle.
Electrical System:
Wiring diagrams, starter, alternator, and sensors.
Cab / Controls:
Operator station, joysticks, and monitoring system.
Procedures Included
Diagnostics:
Fault codes and troubleshooting guides.
Disassembly / Assembly:
Step-by-step instructions with torque specs.
Testing:
Pressure checks and system tests.
Maintenance:
Scheduled maintenance and lubrication charts.
Technical Depth
Level:
Detailed procedures for professional technicians and experienced DIY owners.
Parts Information
Parts Manuals:
Illustrated parts breakdown with part numbers.
Exploded Views:
Shows every component for accurate ordering.
📊 Manual Specifications
File Format
File Type:
PDF
Compatibility:
Windows, Mac, Linux, iOS, Android - any PDF reader.
Requirements:
No special software required.
Searchability:
Text-searchable with bookmarks for easy navigation.
Print Quality
Resolution:
High-resolution (300 DPI) for clear diagrams.
Binding
Type:
Digital
Paper Type
Type:
N/A - digital download
⚙️ Engine Specifications
Engine Options
Standard Engine:
Isuzu 4BD1 naturally aspirated diesel.
Turbocharged Option:
Isuzu 4BD1T turbocharged diesel.
Performance
Net Power (Standard):
Approximately 90-100 PS (66-74 kW).
Net Power (Turbo):
Approximately 110 PS (81 kW).
Displacement:
3.9 L (4BD1).
Fuel System
Injection:
Direct injection with mechanical governor.
Fuel Tank Capacity:
Approximately 130-160 liters (depending on variant).
🔧 Transmission
Transmission Type
Standard:
Hydraulic transmission with three work modes.
📐 Dimensions
Exterior
Wheelbase:
Approximately 2,950 mm (116 in).
Length (Bucket on Ground):
Approximately 7,590 mm (299 in).
Weights
Curb Weight (Operating):
Approximately 12,000 - 12,500 kg.
🛡️ Safety Features
Ratings
Crash Test Information:
N/A - not applicable for heavy machinery.
Active Safety
Travel Alarm:
Audible warning when traveling.
Emergency Stop:
Engine stop switch for emergencies.
Passive Safety
ROPS / FOPS:
Roll-over protective structure (ROPS) and falling-object protective structure (FOPS) available.
Seat Belt:
Operator seat belt standard.
💡 Technology Features
Infotainment
Audio System:
N/A - not standard on this machine.
Driver Assistance
Monitoring System:
Basic gauge cluster with warning lights.
Auto Idle:
Engine auto-idle feature when controls are not used.
🔧 Maintenance
Service Intervals
Engine Oil Change:
Every 250 hours.
Hydraulic Oil Change:
Every 2,000 hours.
Air Filter Cleaning:
Every 50 hours or more often in dusty conditions.
Fluid Specifications
Engine Oil:
API CF-4 or higher, viscosity 10W-30 or 15W-40.
Hydraulic Fluid:
Anti-wear hydraulic oil ISO VG 46.
Grease:
Lithium-based multipurpose NLGI #2.
Known Issues / Common Wear Items
Hydraulic Pump Wear:
Check for cavitation and wear if performance drops.
Track Tension:
Adjust daily to on prescribed sag.
Engine Cooling System:
Clogged radiator can cause overheating; clean regularly.
Swing Bearing:
Grease regularly to extend life.
📚 Vehicle History
Brand Heritage
Manufacturer:
Hitachi Construction Machinery Co., Ltd.
Model Evolution
Introduction:
The EX120 was introduced in the late 1980s as a mid-size excavator.
Variants:
Updated as EX120-2, EX120-3, and EX120-5 with improved performance and emissions.
Production Location
Plants:
Produced in Japan and also in other regional facilities under license.
🏆 Awards & Recognition
Recognition
Model Recognition:
N/A - Specific award not documented for this model; generally well-regarded in its class.
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