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International Harvester

International Harvester 1566 Tractor Workshop Service Repair Manual

International Harvester 1566 Tractor Workshop Service Repair Manual

$16.99
$16.99
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Machine data plateRef 519643
Brand
International Harvester
Equipment
Tractors
Models covered
Farmall Series
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
Model:
1566
Model Variant:
Tractor (two-wheel drive)
Production Years Covered:
1974-1978
👋 Introduction
Market Position
Target Audience:
Farmers, ranchers, and agricultural contractors needing a high-horsepower row-crop tractor for heavy tillage and fieldwork.
Competitive Analysis
Advantage:
Offered 160 horsepower, among the most powerful production tractors of its era, with a rugged, reliable design and comfortable cab options.
Key Features
Engine:
Turbocharged 6-cylinder diesel with 436 cubic inches displacement.
Transmission:
16-speed forward / 8-speed reverse partial powershift.
Hydraulics:
Dual hydraulic pumps with 25 GPM flow, category III 3-point hitch.
Cab:
Available air-conditioned cab with excellent visibility.
📋 Manual Details
Product Specifications
Coverage:
Complete workshop service and repair procedures for all major systems and components.
Page Count:
303 pages
Manual Type:
Workshop Service Repair Manual
Language:
English
File Format:
PDF
Delivery Method:
Instant download
📖 Manual Coverage
Systems Covered
Engine:
Complete engine overhaul, including disassembly, inspection, and reassembly.
Cooling System:
Radiator, water pump, thermostat, and cooling system service.
Fuel System:
Fuel injection pump, injectors, and fuel tank procedures.
Electrical System:
Battery, starter, alternator, wiring diagrams, and lighting.
Transmission:
Gearbox, clutch, and differential service.
Hydraulic System:
Hydraulic pump, valves, cylinders, and 3-point hitch adjustments.
Steering and Brakes:
Steering gear, power steering, and brake adjustments.
Cab and Sheet Metal:
Cab components, instruments, and body panel installation.
Procedures Included
Maintenance:
Weekly and periodic service schedules.
Adjustment:
Detailed procedures for all adjustments, such as valve clearance, clutch, and brakes.
Removal and Installation:
Step-by-step procedures for removing and installing major components.
Disassembly and Assembly:
Detailed instructions for complete teardown and rebuild.
Troubleshooting:
Systematic diagnostic information for identifying and resolving faults.
Torque Specifications:
Factory torque values for critical fasteners.
Diagnostic Pictures:
Illustrations and diagrams to guide procedures.
Technical Depth
Level:
Considerable technical detail suitable for experienced mechanics, yet organized for DIY enthusiasts.
Illustrations:
Exploded diagrams, drawings, and photographs.
Parts Information
Part Numbers:
Reference to International Harvester OEM part numbers where applicable.
Special Tools:
Listed with tool numbers and usage descriptions.
📊 Manual Specifications
File Specifications
File Format:
PDF (Portable Document Format)
Compatibility:
Windows, Mac, and Linux operating systems
Requirements:
Adobe Reader or similar PDF viewer
Searchability:
Searchable text for easy navigation
Physical Characteristics
Print Quality:
High resolution for clear printing
Binding Type:
Digital (no physical binding)
Paper Type:
N/A - digital format, print on your own paper
⚙️ Engine Specifications
Engine Options
Primary Engine:
Diesel 6-cylinder turbocharged
Displacement:
436 cubic inches (7.1 L)
Rated Horsepower:
160 hp (PTO)
Rated Engine Speed:
2400 rpm
Fuel System:
Direct injection, rotary distributor pump
Cooling:
Liquid-cooled
🔧 Transmission
Transmission Options
Standard Transmission:
Partial powershift with 16 forward and 8 reverse gears
Optional Transmission:
N/A - no alternative transmission listed for this model
Features
Clutch:
Dry disc clutch with power shift control
Shift Speeds:
Four speed ranges with selective gear shifting within each range
Differential Lock:
Electro-hydraulic engagement for improved traction
📐 Dimensions
Exterior
Wheelbase:
Approximately 115 inches (2921 mm)
Length:
Approximately 174 inches (4420 mm) with 3-point hitch
Width:
Varies with rear wheel tread setting
Height:
Overall height with cab: approximately 115 inches (2921 mm)
Weights
Curb Weight:
Approximately 13,500 lb (6123 kg) base
Ballast:
Additional front and rear ballast available for traction
🛡️ Safety Features
Rating
Crash Test Information:
N/A - not applicable for agricultural tractors
Active Features
Brakes:
Hydraulic wet disc brakes on rear wheels
Steering:
Hydrostatic power steering
Passive Features
Rollover Protection (ROPS):
Cab provided with ROPS in later models
💡 Technology Features
Infotainment
Audio System:
No factory radio, cab may have provisions for aftermarket
Driver Assistance
Monitoring:
Dash warning lights for oil pressure, coolant temperature, and charge indicator
Hydraulic Controls:
Remote valves with flow control from cab
Tachometer:
Mechanical tachometer with hour meter
🔧 Maintenance
Service Intervals
Engine Oil Change:
Every 100 hours
Hydraulic Fluid Check:
Every 100 hours
Transmission Fluid Check:
Every 100 hours
Fuel Filter Replacement:
Every 500 hours
Coolant Change:
Every 1000 hours or annually
Full Service:
Every 1000 hours
Fluid Specifications
Engine Oil:
SAE 15W-40 diesel engine oil (API CD/SF)
Hydraulic Oil:
International Hy-Tran fluid or equivalent
Transmission Oil:
SAE 80W-90 gear oil
Coolant:
Water and ethylene glycol mixture
Known Issues
Common Wear Items:
Injector nozzles, water pump seal, clutch, brakes and hydraulic lines
Typical Issue:
Engine oil leaks from gaskets and seals over time
📚 Vehicle History
Brand Heritage
Manufacturer:
International Harvester Company (IHC)
Model Evolution
Predecessor:
International 1466
Successor:
International 1586 (within the same series)
Series:
66 Series tractors
Production
Production Location:
Farm Equipment Works, Rock Island, Illinois, US
🏆 Awards & Recognition
Recognitions
Industry Recognition:
Honored as a Prairie Farmer 'Master Farmer' tractor? Possibly in historical tractor clubs
Awards:
No specific awards found; but rich heritage among collectors

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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  • 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.