Target Audience:
Professional technicians and do-it-yourself mechanics
Advantage:
Instant download eliminates shipping costs and waiting time
Content Source:
Written by manufacturers (original workshop manual)
Ease Of Use:
Easy-to-follow, professional writing style
Practicality:
Printable sections for use during repairs, disposable after use
Engine:
Comprehensive engine overhaul, repair, and troubleshooting
Transmission:
Repair, adjustment, and maintenance of the transmission system
Drivetrain:
Detailed information on the rear axle, differential, and final drives
Hydraulics:
Service and repair of the hydraulic system, including pump, valves, and cylinders
Electrical:
Wiring diagrams, troubleshooting, and repair of the electrical system
Braking System:
Maintenance and repair of the brake system
Steering System:
Service and adjustment of the steering components
Cooling System:
Maintenance and repair of the radiator, thermostat, and associated components
Fuel System:
Service and troubleshooting of the fuel injection or carburetor system
Operator Station:
Information pertaining to the operator's controls and seating
Chassis And Frame:
Service and inspection of the tractor chassis and frame components
Maintenance:
Periodic maintenance charts and schedules
Repair Instructions:
Step-by-step repair instructions for various components
Troubleshooting:
Diagnostic information and troubleshooting guides for common problems
Overhaul:
Detailed overhaul procedures for major components like engines and transmissions
Diagnostics:
Diagnostic procedures for identifying faults
Depth Of Coverage:
Suitable for professional technicians and advanced DIY mechanics
Detail Level:
Detailed information for complete overhauls and in-depth repairs
Engine Family:
International Harvester DT-466 (common for this series)
Engine Type:
Diesel, typically turbocharged
Displacement Cc:
Approximately 466 cubic inches (7630 cc) for DT-466
Horsepower Range:
Variable depending on specific configuration, often in the 90-120 HP range
Torque Output:
Significant torque output crucial for heavy farm work
Fuel Injection:
Direct Injection, likely with rotary or inline injection pumps
Cooling Type:
Water-cooled
Oil Capacity Liters:
Approximately 12-14 liters (refer to manual for exact spec)
Oil Type Recommendation:
API CD or CE rated diesel engine oil (refer to manual for precise viscosity and specification)
Transmission Type:
Commonly a 16-speed PowerShift or a 20-speed (16 forward, 4 reverse) manual transmission with a High/Low range
Optional Transmission:
Variations might exist, but PowerShift was a key option
Power Takeoff Pto:
Typically features a live PTO or dual-speed PTO
Transmission Fluid Type:
IH Hy-Trans or equivalent (refer to manual for exact specification and viscosity)
Transmission Fluid Capacity:
Significant capacity, typically over 40 liters (refer to manual)
Wheelbase Inches:
Approximately 94 inches (2388 mm)
Overall Length Inches:
Approximately 140 inches (3556 mm)
Overall Width Inches:
Approximately 70 inches (1778 mm) at rear wheels (variable)
Operating Weight Lbs:
Around 8,000 - 9,000 lbs (3629 - 4082 kg) depending on configuration
Drawbar Horsepower:
Often rated in the 70-80 HP range for drawbar work
Infotainment System:
N/A (This is a tractor, technology is focused on functionality and operation, not entertainment).
Driver Assistance Features:
N/A (Basic tractor controls, no electronic driver assistance).
Connectivity Features:
N/A
Engine Oil And Filter Change:
Typically every 100-250 operating hours or annually (refer to manual for exact interval and specific oil grade).
Transmission Fluid Change:
Recommended every 1000-1500 operating hours or bi-annually (refer to manual).
Air Filter Maintenance:
Regular inspection and cleaning/replacement based on operating conditions (refer to manual).
Hydraulic Fluid Type:
IH Hy-Trans or equivalent (often the same as transmission fluid, but confirm in manual).
Coolant Type:
Ethylene glycol based antifreeze (50/50 mix with distilled water) for freeze protection and corrosion inhibition.
Common Problems:
Potential issues can include wear in the PowerShift transmission clutch packs, hydraulic system leaks, and wear on the injection pump. Engine wear is also common on higher-hour units.
Troubleshooting Focus:
The manual provides the necessary diagnostic trees and repair procedures to address these common wear-related issues.
Manufacturer History:
International Harvester was a major American manufacturer of agricultural and construction equipment, known for robust and reliable machinery.
766 Series Introduction:
The 766 was part of International Harvester's 66 series tractors, introduced in the late 1960s and produced into the 1970s, succeeding earlier models.
Production Years:
Typically produced from around 1971 to 1976.
Manufacturing Location:
United States (various IH plants)
