Do-it-yourself tractor owners and experienced mechanics seeking comprehensive repair and maintenance data.
Competitive Analysis
Value Proposition:
Inexpensive way to keep the tractor working properly, offering detailed, factory-level information.
Key Features
Content Highlights:
Detailed illustrations, diagrams, wiring schematics, specifications, and step-by-step instructions.
Ease Of Use:
Numbered table of contents, bold figure numbers for quick matching, and clear, numbered instructions.
📋 Manual Details
Coverage Areas
General Information:
Included
Engine Mechanical System:
Included
Engine Electrical System:
Included
Emission Control System:
Included
Fuel System:
Included
Suspension System:
Included
Clutch System:
Included
Manual Transaxle System:
Included
Automatic Transaxle System:
Included
Driveshaft And Axle:
Included
Steering System:
Included
Brake System:
Included
Body Interior And Exterior:
Included
Body Electrical System:
Included
Restraint System:
Included
Page Count
Estimated Page Count:
Detailed and comprehensive (exact count not specified, but implies extensive content)
Manual Type
Manual Type:
Workshop Service Repair Manual
Language
Language:
English
Format
File Format:
PDF
Delivery Method:
Instant Download
Requirements
Software Requirements:
Adobe PDF Reader & WinZip
Operating System Compatibility:
All Versions of Windows & Mac
📖 Manual Coverage
Systems Covered
All Major Systems:
Yes, covers all aspects of the tractor's mechanical and electrical systems.
Procedures Included
Repair Procedures:
Step-by-step instructions for all repair tasks.
Diagnostic Procedures:
Detailed troubleshooting guides for identifying and resolving issues.
Maintenance Procedures:
Comprehensive guidance on routine maintenance.
Electrical Service:
Combined troubleshooting, service procedures, and wiring diagrams.
Technical Depth
Depth Of Information:
Complete factory-level service and repair information, suitable for DIY and professional mechanics.
📊 Manual Specifications
File Format
Digital Format:
PDF
Print Quality
Printability:
Fully Printable, allowing users to print specific pages or the entire manual.
Viewing Features:
Zoom IN/OUT capability for detailed examination of illustrations and diagrams.
Binding Type
Binding:
Digital (PDF)
Paper Type
Paper Quality:
N/A (Digital Format)
⚙️ Engine Specifications
Primary Engine
Engine Family:
International Harvester 310 Series Diesel
Engine Details
Engine Type:
Vertical, 4-cylinder, Diesel
Bore X Stroke:
3.875 in. x 4.25 in. (98.4 mm x 108 mm)
Displacement:
201 cu. in. (3.29 L)
Performance
Rated Engine Hp:
Approximately 68.5 PTO HP (Varies slightly by configuration)
Fuel System
Fuel Type:
Diesel
Injection System:
Direct Injection (likely IH DT or similar distributor type)
Lubrication
Oil Type Recommendation:
API CD or MIL-L-2104C, SAE 30 or 10W-30 depending on ambient temperature (refer to manual for specifics)
Cooling System
Coolant Type:
Ethylene Glycol based permanent antifreeze (50/50 mix with water)
🔧 Transmission
Standard
Transmission Type Standard:
International Harvester Syncro-Range Transmission (16 forward, 8 reverse speeds)
Optional
Transmission Type Optional:
Power Steering (Hydro-static, Torque Amplifier - TA)
Features
Torque Amplifier:
Yes, provides on-the-fly gear splitting for increased versatility.
Fluid Specifications
Transmission Fluid Type:
IH Hytran (or equivalent universal tractor hydraulic/transmission fluid rated for IH specifications)
📐 Dimensions
Exterior
Wheelbase:
Approximately 91.7 inches (2330 mm)
Weights
Operating Weight:
Approximately 7,800 - 8,500 lbs (3538 - 3856 kg) depending on configuration.
🛡️ Safety Features
Ratings
Safety Standards:
Focus on operator safety as per contemporary agricultural machinery standards.
Active Features
Braking System:
Hydraulic disc brakes, wet type (typically on rear axle).
Passive Features
Operator Protection:
ROPS (Roll-Over Protective Structure) is often a factory option or dealer installed, and highly recommended.
💡 Technology Features
Infotainment
Infotainment System:
N/A (As per typical tractor design of the era, focused on functionality, not entertainment).
Driver Assistance
Traction Control:
Mechanical differential lock on rear axle.
Connectivity
Remote Connectivity:
N/A
🔧 Maintenance
Service Intervals
Engine Oil Change:
Typically every 100-250 operating hours, depending on operating conditions (refer to manual for precise intervals).
Transmission Hydraulic Filter:
Recommended replacement at specific hour intervals or as per manual guidance, often alongside oil changes.
Fluid Specifications
Hydraulic System Capacity:
Approximately 9-10 gallons (34-38 Liters) for the combined transmission/hydraulic system (varies).
Engine Oil Capacity:
Approximately 8.5 quarts (8.0 Liters) with filter change.
Known Issues
Common Wear Items:
Clutch plates, brake discs, hydraulic pump, PTO clutch, and front axle pivot points are common wear items.
Electrical Gremlins:
Age-related issues with wiring harnesses, switches, and starter solenoids are not uncommon.
Torque Amplifier Issues:
Can develop wear in the engaging mechanisms, requiring adjustment or rebuild.
📚 Vehicle History
Brand Heritage
Manufacturer Legacy:
International Harvester (IH) was a major American manufacturer of agricultural and construction equipment, known for robust and reliable machinery.
Model Evolution
766 Series Placement:
The 766 was part of IH's Hydro-4 and Syncro-Range tractor line, positioned as a versatile utility tractor.
Production
Production Years:
Approximately 1971-1976
Production Locations
Manufacturing Sites:
Primarily manufactured at IH plants in the United States.
🏆 Awards & Recognition
Recognitions
Industry Acclaim:
While specific awards for the 766 model are not readily documented, International Harvester tractors of this era were generally well-regarded for their durability and performance in agricultural operations.