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IH International

IH International Harvester 1566 1568 1586 Tractor Service Repair Workshop Manual

IH International Harvester 1566 1568 1586 Tractor Service Repair Workshop Manual

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Machine data plate
Brand
IH International
Equipment
Tractors
Models covered
1586
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you — re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your serial range? Ask us before you buy
🏷️ Basic Information
Identification
Make:
International Harvester (IH)
Model:
1566, 1568, 1586
Model Variants:
1566 (2WD), 1568 (2WD), 1586 (2WD)
Production Years Covered:
Late 1970s to early 1980s
👋 Introduction
Market Position
Target Audience:
Heavy-duty farming operations, large-scale agricultural use
Positioning:
High-horsepower row-crop tractors for demanding applications
Competitive Analysis
Advantages:
Robust construction, turbocharged engines, Torque Amplifier transmission, advanced hydraulic system for era
Key Features
Engine:
Diesel, turbocharged (1566/1586) and naturally aspirated (1568)
Transmission:
Partial power shift with Torque Amplifier
Hydraulics:
Closed-center hydraulic system
📋 Manual Details
Coverage
Models Covered:
IH 1566, 1568, 1586
Content:
Complete workshop service and repair information
Format
Page Count:
N/A - Not specified. Comprehensive manual.
Manual Type:
Workshop Service Repair Manual
Language:
English
File Format:
PDF
Delivery Method:
Instant Download
📖 Manual Coverage
Systems Covered
Engine:
Detailed service, repair, and overhaul procedures
Cooling System:
Maintenance and repair
Diesel Fuel System:
Injection pump, injectors, fuel tank, lines
Clutch:
Adjustment and replacement
Transmission:
Disassembly, inspection, and assembly
Torque Amplifier:
Service and troubleshooting
Hydraulic System:
Pump, valves, cylinders, and lines
Power Steering:
Gearbox and pump service
Brakes:
Adjustment and lining replacement
Electrical System:
Wiring diagrams, starter, alternator, lights
Procedures Included
Preventative Maintenance:
Schedules and checklists
Repair Instructions:
Step-by-step with illustrations
Troubleshooting Guides:
Systematic diagnostic charts
Rebuild Procedures:
Complete engine and transmission overhauls
Technical Depth
Diagrams:
Clear, illustrated diagrams for all systems
Specifications:
Torque specs, clearances, and capacities
Part Numbers:
Breakdowns for components
Parts Information
Detailed:
Part numbers and identification
📊 Manual Specifications
File Format
File Type:
PDF
Compatibility:
Any device with a PDF reader
Requirements:
Adobe Acrobat Reader or similar
Searchability:
Searchable text with bookmarks
Print Quality
Quality:
High-resolution scan of original manual
Binding and Paper
Binding Type:
Digital (no physical binding)
Paper Type:
N/A - Digital download
⚙️ Engine Specifications
Engine Options
1566 Engine:
DT-466B, 6-cylinder diesel, turbocharged
1568 Engine:
DV-550, V-8 diesel
1586 Engine:
DT-466B, 6-cylinder diesel, turbocharged
Performance
Power (1566/1586):
Approximately 160-183 HP (varies by test)
Power (1568):
Approximately 160 HP (varies by test)
Fuel System
Type:
Diesel direct injection
Turbocharging:
Turbocharged on 1566 and 1586, naturally aspirated on 1568
🔧 Transmission
Standard Transmission
Type:
Partial power shift with Torque Amplifier
Gears:
16 forward, 8 reverse (approximate)
Features
Torque Amplifier:
Provides on-the-go shifting for increased flexibility
Clutch:
Hydraulic wet clutch for TA
📐 Dimensions
Exterior
Wheelbase:
Approximately 120 inches (approx.)
Length:
Approximately 180 inches (approx.)
Weights
Curb Weight:
Approximately 13,000 lbs (approx., varies with configuration)
🛡️ Safety Features
Ratings
Crash Test Information:
N/A - Agricultural tractor, not rated
Active Features
Brakes:
Dual hydraulic disc brakes
Steering:
Power steering
Passive Features
Rollover Protection:
Optional ROPS (some models)
Seat Belt:
Provided per original equipment
💡 Technology Features
Infotainment
Audio System:
N/A - Not typical for this era
Driver Assistance
Monitoring:
Gauges for engine and systems
🔧 Maintenance
Service Intervals
Engine Oil:
Every 100 hours (refer to manual)
Hydraulic Fluid:
Every 500 hours (refer to manual)
Coolant:
Every 1000 hours (refer to manual)
Fluid Specifications
Engine Oil:
API CC/CD, 10W-30 or 15W-40 depending on temperature
Hydraulic Fluid:
IH Hy-Gard or recommended equivalent
Coolant:
Ethylene-glycol based
Known Issues / Common Wear Items
Fuel System:
Injector and pump wear
Hydro Pump:
Seal leaks
Transmission:
TA clutch issues if not adjusted
Electrical:
Wiring harness corrosion
📚 Vehicle History
Brand Heritage
Manufacturer:
International Harvester Company
Heritage:
Known for durable agricultural equipment since early 1900s
Model Evolution
Predecessors:
Replaced the 1466/1468/1586 series in the mid-1970s
Successors:
Succeeded by the IH 5088, 5288, 5488 models in 1981
Production Location
Assembly Plant:
Farmall Works in Rock Island, Illinois, USA (exact location to verify)
🏆 Awards & Recognition
Recognitions
Industry Impact:
Considered a milestone in high-horsepower tractor development
Official Awards:
N/A - No recorded awards for this specific model

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

Check the serial range before you buy

Manufacturers change procedures and part numbers by serial-number break. If your data plate shows a serial prefix that is not listed above, contact us with the model and serial number and we will confirm coverage before you order.

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  • Instant download PDF link on your order page and by email right after payment.
  • Secure checkout Encrypted Shopify checkout — we never see your card.
  • Print-ready PDF Searchable text, print the pages you need for the workshop.
  • Phone, tablet, PC Open it in the cab, the workshop or the office.