🏷️ Basic Information Identification Make: International Harvester (IH) Model: 1466, 1468, 1486 Codes Product Identifier: IH-1466-1468-1486-Tractor-Shop-Manual-PDF 👋 Introduction Market Position Tractor Class: Heavy-duty agricultural tractors, known for power and versatility in their era. Competitive Analysis Competitors: Competed with other major tractor manufacturers like John Deere, Case IH (pre-merger), and Ford in the large horsepower segment. Key Features Engine Power: Offered significant horsepower for demanding farm tasks. Key models featured robust IH DT-series diesel engines. Transmission Options: Featured advanced (for the time) powershift transmissions, enhancing operational efficiency and driver comfort. Hydraulic System: Equipped with a capable hydraulic system supporting various implements and advanced hitch controls. Operator Comfort: Offered optional air-conditioned cabs, contributing to operator comfort during long working hours. Manual Value Proposition Value: Provides essential, manufacturer-sourced information for maintaining and repairing these powerful and durable tractors, crucial for owners seeking to maximize longevity and performance. 📋 Manual Details Coverage Areas Coverage: Comprehensive service and repair for IH 1466, 1468, and 1486 Diesel Tractors Page Count Estimated Page Count: Over 700 pages (typical for comprehensive tractor shop manuals) Manual Type Type: Shop Workshop Service Repair Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: Detailed troubleshooting, overhaul, and component testing for D-series diesel engines (e.g., D358, D414, D436, D466) Transmission: Repair and adjustment of the full powershift transmission, clutch, and PTO systems Hydraulics: Service and troubleshooting of the hydraulic system, including pumps, valves, cylinders, and the 3-point hitch Electrical: Wiring diagrams, component testing, starter, alternator, lighting systems, and dashboard instrumentation Chassis And Steering: Front axle, steering system (hydrostatic power steering), rear axle, and braking systems Fuel System: Service and calibration of fuel injection pumps and injectors Cooling System: Radiator, fan, water pump, and thermostat service Air Conditioning: Service and repair of the factory-installed A/C system (if equipped) Frame And Axles: Front and rear axle assemblies, differential, final drives, and frame integrity checks. Operator Station: Cab removal/installation (if equipped), controls, seat, and platform service. Brake System: Service and adjustment of the mechanical disc brakes. Procedures Included Maintenance: Routine maintenance, lubrication schedules, filter changes, and fluid checks Troubleshooting: Diagnostic procedures for common operational issues across all systems Repair: Step-by-step repair instructions for all major components and sub-assemblies Overhaul: Complete engine and transmission overhaul procedures with specifications Disassembly And Assembly: Detailed instructions for component removal, disassembly, inspection, and reassembly Alignment And Adjustment: Procedures for setting critical clearances, adjustments, and alignments Diagnostics: Systematic diagnostic charts and flowcharts for engine, transmission, and hydraulic problems. Component Rebuilds: Detailed guides for rebuilding components like the hydraulic pump, power steering cylinder, starter, and alternator. Technical Depth Depth: Comprehensive: Covers basic maintenance to full engine and transmission rebuilds, including detailed specifications and diagnostic charts. Specifications: Includes critical torque values, clearances, pressure specifications, and dimensional data for all serviced components. 📊 Manual Specifications File Format PDF Quality: High-resolution, optimized for readability and searchability; includes bookmarks for easy navigation. Searchable Text: Yes, the PDF is designed with searchable text for quick information retrieval. Bookmarks: Yes, includes bookmarks for efficient navigation through sections. Print Quality Printable: Printable PDF pages allowing users to create a physical copy. Binding Type Binding: N/A (Digital PDF download) Paper Type Paper Type: N/A (Digital PDF download) ⚙️ Engine Specifications Primary Engine Engine Type: Direct injection, turbocharged, naturally aspirated diesel engines (IH DT-series) Displacement 1466: 466 cubic inches (7.6 Liters) - Typically IH DT466 Displacement 1468: 414 cubic inches (6.8 Liters) - Typically IH D414 or DT414 Displacement 1486: 466 cubic inches (7.6 Liters) - Typically IH DT466 Performance Horsepower 1466: Approx. 145 PTO horsepower (varies by specific configuration) Horsepower 1468: Approx. 125 PTO horsepower (varies by specific configuration) Horsepower 1486: Approx. 145 PTO horsepower (varies by specific configuration) Torque: Specifications for engine torque output are available within the manual for each engine variant. Fuel System Injection System: Roosa Master or Bosch inline fuel injection pumps Fuel Type: Diesel Fuel #2 Cooling System Coolant Capacity: Approximately 25-30 quarts (varies slightly) 🔧 Transmission Standard Transmission Type: IH 2-Speed Power Shift (also known as TA - Torque Amplifier, and Full Powershift) Number Of Gears: 16 Forward Speeds / 6 Reverse Speeds (with Power Shift engaged) Optional Optional Transmission: Standard 8-speed transmission (less common on these models, but possible on earlier iterations or specific configurations). Features Pto Options: 540/1000 RPM PTO (standard), 1000 RPM PTO (optional) Fluid Specs Transmission Fluid: IH Hy-Trans (or equivalent UTF - Universal Tractor Fluid) Fluid Capacity Transmission Oil Capacity: Approximately 20-25 quarts 📐 Dimensions Exterior Wheelbase: Approximately 104 inches (2640 mm) Weights Operating Weight: Approximately 12,000 - 14,000 lbs (5443 - 6350 kg) depending on configuration and ballast. Front Tire Size: 11.00-16 or 10.00-16 Rear Tire Size: 20.8-38 or 18.4-38 💡 Technology Features Infotainment Dashboard: Basic analog gauges for RPM, oil pressure, fuel level, coolant temperature, and ammeter/voltmeter. Hour meter is standard. Driver...