Purpose:
Essential resource for maintaining and repairing the International Harvester 766 tractor
Accuracy:
Written by manufacturers, original workshop manual
Accessibility:
Instant download for immediate access
Usability:
Easy to follow, practical repair instructions
Market Segment:
Mid-range utility tractor, competing with models from John Deere, Massey Ferguson, Ford, and Case IH during its production era.
Engine:
Detailed overhaul and repair procedures, troubleshooting, engine specifications
Transmission:
Repair, maintenance, and troubleshooting of transmission systems
Hydraulic System:
Service and repair of hydraulic pumps, valves, cylinders, and associated components
Electrical System:
Wiring diagrams, troubleshooting, component testing, and repair
Cooling System:
Maintenance, repair, and troubleshooting of radiator, thermostat, and fan systems
Fuel System:
Inspection, service, and repair of fuel injection or carburetion systems, fuel pumps, and filters
Brake System:
Service and repair of braking mechanisms, including hydraulic and mechanical components
Steering System:
Maintenance and repair of steering components, including power steering systems
Powertrain:
Covers engine, transmission, final drives, and differential assemblies
Chassis And Frame:
Inspection and repair of structural components and chassis assemblies
Operator Controls:
Service and adjustment of levers, pedals, and control linkages
Power Take Off Pto:
Service, repair, and adjustment of the PTO clutch and engagement mechanisms.
Three Point Hitch:
Service and repair of the hydraulic lift system, draft control, and position control.
Routine Maintenance:
Periodic maintenance charts and procedures
Step By Step Repair:
Detailed, step-by-step repair instructions for all major components
Troubleshooting:
Comprehensive troubleshooting guides for diagnosing common and uncommon issues
Overhaul Procedures:
Complete overhaul procedures for engine, transmission, and other major assemblies
Wiring Diagrams:
Inclusion of detailed electrical wiring diagrams
Diagnostics:
Diagnostic information and procedures for identifying faults
Adjustments:
Adjustment procedures for various components and systems
Disassembly And Assembly:
Detailed instructions for disassembling and reassembling components
Depth:
Suitable for professional technicians and advanced DIY mechanics
Target Audience:
Professional technicians, do-it-yourself mechanics, owners
Component Rebuilds:
Covers complete rebuilds of major powertrain and hydraulic components.
Scope:
Comprehensive, covering all aspects of repair and maintenance for the International Harvester 766 tractor.
Manual Type Clarification
Service Vs Repair:
This is a combined Service and Repair manual, encompassing routine maintenance, troubleshooting, and in-depth repair procedures.
Engine Options:
Likely includes 310, 360 cubic inch D-series engines (IH D-236, D-282, DT-312, DT-359 depending on exact configuration and year, details in manual)
Horsepower Range:
Typically 60-90 PTO horsepower (specifics vary by engine and configuration, details in manual)
Torque Specifications:
Torque figures for engine components and specifications for PTO torque will be present.
Injection Type:
Indirect injection or direct injection with diesel injection pumps (e.g., Roosa Master or Bosch, details in manual)
Cylinder Head Torque:
Specific torque values for cylinder head bolts will be detailed in the manual.
Valve Lash Adjustment:
Clearance specifications and adjustment procedures for intake and exhaust valves will be provided.
Operating Weight Approx:
Around 7,000 - 8,500 lbs (3,175 - 3,856 kg) depending on configuration. (Precise weights in manual)
Wheelbase Approx:
Approximately 85 inches (2,159 mm). (Exact dimension in manual).
Length Approx:
Approximately 140-150 inches (3,556 - 3,810 mm) without implements. (Exact dimension in manual).
Height Approx:
Approximately 60-70 inches (1,524 - 1,778 mm) to top of steering wheel/hood. (Exact dimension in manual).
Engine Oil Change:
Typically every 100-250 hours of operation (specific interval in manual based on operating conditions and oil type).
Transmission Fluid Change:
Recommended at specified hourly intervals or annually (details in manual).
Engine Oil Type:
API Service Category CD or higher diesel engine oil, SAE 15W-30 or 10W-30 depending on temperature. (Exact specifications and capacities in manual).
Hydraulic Fluid Type:
IH Hy-Tran fluid or equivalent UTF (Universal Tractor Transmission) fluid meeting IH specifications. (Capacity and detailed specs in manual).
Transmission Oil Viscosity:
Specific SAE viscosity grades for transmission and hydraulic fluid will be detailed based on ambient operating temperatures.
Coolant Type:
Ethylene glycol-based antifreeze with corrosion inhibitors, mixed with distilled water. (Specific ratios and types in manual).
Brake Fluid Type:
If applicable, brake fluid type (e.g., DOT 3) will be specified. (Often uses hydraulic fluid for tractors with hydraulic brakes).
Common Wear Points:
Hydraulic system leaks, PTO clutch wear, starter motor issues, electrical connection corrosion (manual addresses diagnosis and repair).
