The International Harvester (IH) 766 tractor, produced in the late 1960s to mid-1970s, represents a robust and reliable piece of agricultural machinery from a manufacturer renowned for its durable equipment. As part of IH's successful 7x6 series, this tractor offered improved performance and features over its predecessors, making it a valuable asset for farming operations. Its design prioritized functionality and longevity, embodying the brand's heritage of building dependable machinery for demanding environments.
This comprehensive workshop service and repair manual provides detailed, step-by-step instructions for maintaining and repairing your IH 766 tractor. It covers a wide array of systems, including the engine, lubrication, cooling, fuel, clutch, transmission, drivetrain, brakes, steering, hydraulics, and electrical systems. With hundreds of photos and illustrations, this manual is an essential resource for both do-it-yourself owners and experienced mechanics, offering guidance on routine maintenance, advanced troubleshooting, and complete disassembly and servicing procedures to ensure the continued proper operation and longevity of your tractor.
Make:
International Harvester (IH)
Manual Product Name:
IH International Harvester 766 Workshop Service Repair Manual Download
Target Audience:
Do-it-yourselfers and experienced mechanics
Value Proposition:
Inexpensive way to keep the vehicle working properly, save money, and increase knowledge about the tractor.
Manual Advantage:
Official full factory service repair manual providing detailed, step-by-step instructions with extensive visual aids.
Information Accessibility:
Printable format allows for selective or complete printing, offering flexibility.
Primary Focus:
Workshop Service and Repair
Estimated Count:
Hundreds of pages (exact count not specified in product description)
Type:
Full Factory Service Repair Manual
Engine:
Yes (including disassembly and servicing)
Drive Chain Sprockets:
Yes
Electrical System:
Yes (including wiring diagrams)
Advanced Troubleshooting:
Yes
Disassembly Servicing:
Yes
Separation Procedures:
Yes
Troubleshooting:
Yes (advanced)
Depth:
Comprehensive (covers complete disassembly, step-by-step instructions)
Illustration Quality:
Hundreds of photos and illustrations, enlarged insets for detailed examination
Instruction Format:
Numbered instructions, detailed substeps, notes, cautions, and warnings
Compatibility:
All PC-based Windows operating systems and Mac
Printability:
Printable without any restriction (entire manual or selected pages)
Binding:
N/A (Digital Download)
Paper Type:
N/A (Digital Download)
Delivery:
Instant Download Link on Checkout Page
Software Requirement:
Adobe PDF Reader
Engine Family:
International Harvester DT-466 (likely, common for this series)
Engine Type:
Diesel (expected)
Horsepower:
Varies by specific configuration (typically in the 80-100 HP range for 766 series, exact specs would be in the manual)
Torque:
Varies by specific configuration (detailed in manual)
Injection System:
Likely Inline Injection Pump (details in manual)
Transmission Type:
Various IH transmissions, likely including a 2WD or 4WD option with multiple gears (e.g., Power Shift, manual gearbox - specific options detailed in manual)
Optional Transmissions:
Possible Power Shift transmissions or variations depending on specific build. (Details within manual)
Transmission Features:
Manual, Power Take-Off (PTO), possible hydrostatic or powershift options (covered in manual)
Wheelbase:
Varies by configuration (e.g., 2WD vs. 4WD, standard vs. high crop; specific dimensions in manual)
Operating Weight:
Varies by configuration (specific weights in manual)
Safety Compliance:
General agricultural tractor safety standards applicable at the time of manufacture (details on safe operation in manual).
Operator Safety:
Includes guidance on safe operation, hazard identification, and proper use of controls.
Rollover Protection:
ROPS (Roll-Over Protective Structure) availability and installation details (if applicable to the 766 series, covered in manual).
Infotainment Systems:
N/A (Basic agricultural tractor with focus on functionality, not electronic entertainment systems).
Driver Assistance Features:
N/A (Focus on mechanical and hydraulic systems for operation).
Connectivity Options:
N/A
Oil Change Interval:
Detailed in manual (typically 100-250 hours for engine oil, depending on application and oil type).
Filter Replacement:
Hydraulic, fuel, and air filter replacement intervals specified in manual.
Engine Oil Type:
API CD or CES 20044 (or equivalent diesel engine oil, specific viscosity depends on ambient temperature - see manual for details).
Hydraulic Fluid Type:
IH Hy-Tran fluid or equivalent UTFMS (Universal Tractor Transmission Fluid - Multi-Service). (Manual will specify exact type and viscosity).
Transmission Fluid Type:
IH Hy-Tran fluid or equivalent UTFMS (Manual will specify exact type and viscosity).
Coolant Type:
Ethylene glycol based antifreeze with corrosion inhibitors. (Manual will specify ratio and additive requirements).
Common Wear Points:
Wear on clutch components, transmission gears, hydraulic pump and cylinders, front axle pivot points, and electrical connections are common in older tractors. The manual addresses diagnosis and repair for these.
Engine Maintenance:
Regular fuel filter changes, air filter maintenance, and cooling system checks are crucial for longevity of the DT-466 engine.
Manufacturer History:
International Harvester (IH) was a major American manufacturer of agricultural and construction equipment, known for its robust and reliable machinery.
Series Context:
The 766 is part of IH's 7x6 series, a popular line of tractors that succeeded earlier models, offering improved features and performance.
Production Years:
Circa late 1960s to mid-1970s (specific years covered by manual may vary, but the 766 model falls within this era).
Industry Standing:
International Harvester tractors, including the 766 series, were known for their robust construction and reliability in demanding agricultural environments, earning a strong reputation among farmers.
