🏷️ Basic Information Identification Make: International Harvester Model: 986 Tractor Product Type: Full Service Repair Manual 👋 Introduction Market Position Segment: Agricultural Tractors (Heavy Duty) Competitive Analysis Comparison Point: Essential resource for owners and technicians seeking comprehensive maintenance and repair guidance for the IH 986. Key Features Diagnostic Tools: Integrated troubleshooting and electrical service procedures with wiring diagrams. Illustration Quality: Detailed illustrations, drawings, and photos with enlarged insets for part examination. Instruction Format: Numbered, step-by-step instructions with bold figure numbers for easy referencing. Content Structure: Numbered table of contents for quick information retrieval. Safety Information: Notes, cautions, and warnings integrated throughout repair procedures. 📋 Manual Details Coverage Areas Primary Coverage: International Harvester 986 Tractor Page Count Estimated Pages: Extensive (specific count not provided, but described as 'very detailed' and 'full service') Manual Type Type: Full Service Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Comprehensive diagnostics, repair, and rebuild procedures for the engine. Transmission: Detailed coverage of transmission repair and maintenance. Electrical System: Includes troubleshooting, service procedures, and detailed wiring diagrams. Hydraulics: Implied coverage through general repair and diagnostic procedures. Drivetrain: Coverage of components related to power transfer. Chassis And Frame: Procedures for structural components and associated systems. Operator Controls: Maintenance and repair of control systems. Pto And Hitch: Likely covered within general repair and maintenance sections. Procedures Included Maintenance: Comprehensive service schedules and maintenance procedures. Repair: Detailed step-by-step repair instructions for all major components. Rebuilding: In-depth procedures for component rebuilding, including engine and transmission. Refurbishment: Guidance on restoring components and the tractor's overall condition. Restoration: Comprehensive support for full restoration projects. Diagnostics: Extensive troubleshooting and diagnostic procedures for all systems. Technical Depth Target Audience: Professional technicians and experienced DIY mechanics. Depth Of Coverage: Covers everything from basic maintenance to complete engine and transmission rebuilds, with detailed diagnostic procedures. 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Full Printable (all pages) Binding Type Binding: Digital (downloadable, can be printed and bound) Paper Type Paper Type: N/A (Digital format) Compatibility Operating Systems: All Versions of Windows & Mac Requirements Software: Adobe PDF Reader & WinRAR ⚙️ Engine Specifications Primary Engine Engine Model Likely: International Harvester DT-466 (or similar variant) Engine Type: Diesel, turbocharged (likely) Performance Horsepower Estimated: Approx. 100-115 PTO HP (varies by specific configuration) Torque Estimated: Significant torque output for heavy draft work (specific figures vary). Fuel System Fuel Type: Diesel Injection System: Bosch inline injection pump (typical for this era and engine). Cooling System Cooling Type: Liquid-cooled 🔧 Transmission Standard Transmission Type: Manual Synchromesh with Power Steering (e.g., 16-speed) Optional Power Shift: Not a standard feature on the 986, but the manual would detail any related systems. Features Gear Selection: Multiple forward and reverse gears for versatile operation. 📐 Dimensions Exterior Wheelbase: Approx. 94.5 inches (2400 mm) Weights Operating Weight: Approx. 9,000 - 10,000 lbs (4080 - 4535 kg) depending on configuration. 🛡️ Safety Features Ratings Safety Features: Roll Over Protective Structure (ROPS) availability, seat belts, operator presence lever (safety interlock). Active Features Braking System: Hydraulic disc brakes. 💡 Technology Features Infotainment Audio System: Basic AM/FM radio (optional, typically not integrated in the same way as modern vehicles). Driver Assistance Power Steering: Standard power steering for improved maneuverability. Connectivity Lighting: Work lights and road lights (depending on configuration). 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250 hours (refer to manual for specific recommendation). Fuel Filter Replacement: Regular replacement as per manual, often tied to hours or fuel quality. Hydraulic Fluid Change: Typically annually or every 500-1000 hours (refer to manual). Fluid Specifications Engine Oil Type: API CD or CE rated diesel engine oil (e.g., SAE 15W-40 or 10W-30 depending on climate). Hydraulic Fluid Type: IH Hy-Tran Plus or equivalent UTF (Universal Tractor Transmission Fluid) meeting IH spec B-6. Coolant Type: Ethylene glycol based antifreeze with a suitable corrosion inhibitor package for diesel engines. Known Issues Common Wear Items: Clutch wear, hydraulic pump issues, injector problems, and potential electrical connection corrosion. Engine Troubleshooting: Common issues addressed include hard starting, loss of power, and excessive smoke, all detailed in the manual. 📚 Vehicle History Brand Heritage Manufacturer: International Harvester (IH), a major American manufacturer of agricultural and construction equipment. Model Evolution Series: Part of the IH '86 series' of tractors, a successful line known for their comfort and performance. Production Production Years: Circa 1976-1981 Manufacturing Location: United States (e.g., Louisville, Kentucky plant) 🏆 Awards & Recognition Recognitions Industry Standing: The 986 was well-regarded in its time for its durability and power, a solid workhorse in the agricultural industry.