Target Audience:
Tractor owners, mechanics, repair shops
Quality And Accuracy:
Professional quality, manufacturer-written, complete and intact, same manual used by local repair shops
Usability:
Hundreds of pages of diagrams, detailed information, easy-to-follow directions, pictures, numbered instructions
Diagrams And Illustrations:
Hundreds of detailed diagrams, drawings, and photos to aid in understanding repair procedures.
Completeness:
Guaranteed to be complete and intact, without missing or corrupt parts.
Cost Savings:
Save hundreds or thousands in repair bills by performing DIY repairs
Market Niche:
The 766 was positioned as a versatile medium-horsepower tractor suitable for a wide range of farm tasks.
Primary Coverage:
IH International Harvester 766 Tractor (All Models/Engines/Trim/Transmissions)
Engine Variants:
Covers all engine variants offered for the 766 model.
Transmission Variants:
Covers all transmission types and options available for the 766 model.
Estimated Pages:
Hundreds
Type:
Workshop Repair Service Manual
Content Focus:
Workshop/Service/Repair focus, providing in-depth technical guidance.
Engine Systems:
Engine overhaul, Diesel Fuel System, LP-Gas System, Carburetor, Governor (Non-Diesel)
Drivetrain Systems:
Transmission Overhaul, Torque Amplifier, Differential, Final Drive, Direction Reverser
Chassis Systems:
Brakes, Steering System, Power Steering System, Front System
Auxiliary Systems:
Cooling System, Hydraulic System, Power Takeoff (PTO)
Other Systems:
Belt Pulley
Bodywork And Chassis:
Front system, fenders, operator station related components.
Power Takeoff:
Complete service information for the Power Takeoff (PTO) system, including engagement and operation.
Hydraulic System:
Extensive coverage of the tractor's hydraulic system, including pump, valves, cylinders, and remotes.
Repair Procedures:
Disassembly, Assembly, Cleaning, Reinstallation, Step-by-step repair procedures
Maintenance Procedures:
Routine maintenance, Service data, Troubleshooting
Electrical System Repair:
Diagnosis and repair of electrical systems, including detailed wiring diagrams.
Specifications Data:
Service data including torque specifications, clearances, fluid capacities.
Troubleshooting Guides:
Dedicated sections for troubleshooting common issues across all systems.
Diagnostics And Troubleshooting:
Comprehensive diagnostic information, Troubleshooting electrical systems, Wiring diagrams
Technical Specifications:
Critical specifications, Torque values, Fluid capacities, Service data
Assembly And Disassembly:
Detailed instructions for taking apart and reassembling all major components and systems.
Part Identification:
Enlarged inset views to help identify and examine parts in detail.
Print Quality:
Full Printable
Zoom Capability:
Zoom IN/OUT
Searchability:
Likely searchable due to PDF format, facilitating quick information retrieval.
Print Features:
Printable sections allow for convenient use in a workshop environment.
Delivery Method:
Instant Download
Software Requirements:
Adobe PDF Reader & WinZip
Operating Systems:
All Versions of Windows & Mac
Engine Type Overview:
The 766 series was typically powered by International Harvester's robust diesel engines, though LP-Gas options were also available.
Power Output:
Exact horsepower and torque figures vary by specific engine variant and configuration, but these tractors were designed for significant pulling power.
Fuel Types:
Diesel, LP-Gas (Liquefied Petroleum Gas)
Fuel Delivery:
Detailed procedures for diesel fuel injection systems, carburetors for LP-Gas variants.
Governor Systems:
Specific coverage for non-diesel governor systems, crucial for engine speed regulation.
Transmission Types:
Manual transmission with optional Torque Amplifier (TA), and a Direction Reverser (Hi-Lo) system were common.
Torque Amplifier:
An integral part of the drivetrain, providing on-the-go gear splitting for improved tractability.
Overhaul Procedures:
Comprehensive coverage for transmission overhaul, including Torque Amplifier and Direction Reverser.
Operating Weight:
Refer to specific model variants for exact operating weights, which can vary significantly based on configuration (e.g., 2WD vs. MFWD, tire sizes).
Approximate Base Weight:
Typically in the range of 7,000 - 9,000 lbs (3,175 - 4,082 kg).
Operator Controls:
Focuses on functional mechanical and hydraulic controls for operation and implement management, not digital infotainment.
Power Steering:
Hydraulic power steering system significantly aids in maneuverability. Manual covers its service.
Electrical System Diagrams:
Detailed wiring diagrams are included for diagnosing and repairing electrical faults.
Engine Oil And Filter:
Typically every 250-400 operating hours, depending on operating conditions. Specific interval detailed in manual.
Transmission Hydraulic Fluid:
Refer to manual for specific fluid change intervals, usually linked to hours of operation or time.
Engine Oil:
CD/CE/CF-rated diesel engine oil, SAE 15W-40 recommended for most operating temperatures. Specifics in manual.
Hydraulic Fluid:
IH Hy-Tran fluid or equivalent UTF (Universal Tractor Transmission) fluid. Manual will list precise specifications.
Lubrication Points:
Manual will detail specific lubrication points and recommended lubricant types.
Torque Amplifier Reliability:
While generally robust, Torque Amplifiers can require careful maintenance and can experience wear over time, especially if overloaded. The manual provides diagnostic and repair procedures.
Hydraulic System Leaks:
Common tractor issue, often related to worn seals or hoses. The manual extensively covers hydraulic system troubleshooting and repair.
Diesel Fuel System Maintenance:
Regular fuel filter changes and proper bleeding of the fuel system are crucial for diesel engine performance.
Cooling System Maintenance:
Proper coolant levels and radiator maintenance are essential to prevent overheating. Manual provides guidance.
Manufacturer:
International Harvester (IH), a significant player in agricultural machinery for decades.
Legacy:
International Harvester's legacy of building durable and functional agricultural machinery.
Series Context:
The 766 was part of IH's successful '70' series, offering a balance of power, versatility, and reliability for medium-duty farm work.
Production Years:
Produced from approximately 1971 to 1976.
