🏷️ Basic Information Identification Make: International Harvester Model: 986 Tractor Codes Model Code: 986 👋 Introduction Market Position Target Audience: Tractor Owners, Mechanics, DIY Enthusiasts Competitive Analysis Value Proposition: Empowers users to perform their own repairs, saving significant costs Key Features Ease Of Use: Easy-to-follow, step-by-step instructions Information Access: Provides comprehensive information for all service and repair needs Knowledge Enhancement: Makes users up-to-date and knowledgeable about their tractor 📋 Manual Details Coverage Areas Primary Focus: Service and Repair Additional Coverage: Routine Maintenance, Troubleshooting, Wiring Diagrams Page Count Estimated Pages: Comprehensive (Specific count not provided, but described as 'in depth') Manual Type Type: Workshop Service Manual (WSM) Language Language: English Format File Format: PDF Delivery Method: Instant Download Print Capability: Full Printable Software Requirements: Adobe PDF Reader Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine: Detailed overhaul, diagnostics, fuel system, cooling system, lubrication system Transmission: Power Shift, Gearbox, PTO, Differential, Drive Axles Hydraulics: Hydraulic pump, control valves, cylinders, remote couplers, linkage Electrical System: Starting and charging system, lighting, instruments, wiring diagrams Steering: Power steering system, components, and troubleshooting Brakes: Brake system components, service, and adjustments Chassis And Body: Frame, fenders, operator station, hitches Procedures Included Maintenance: Scheduled maintenance, lubrication, fluid changes, filter replacements Repair: Step-by-step repair instructions for all major components and systems Troubleshooting: Diagnostic procedures for common and uncommon issues Disassembly And Assembly: Detailed instructions for component removal and reinstallation Adjustments: Calibration and adjustment procedures for various systems Technical Depth Depth: Professional Quality, In-depth, All areas of repair Illustrations: Includes pictures and diagrams Wiring Diagrams: Provided for electrical system troubleshooting 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Full Printable Binding Type Binding: Not Applicable (Digital Download) Paper Type Paper: Not Applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Model: D-358 Diesel Engine Type: Naturally Aspirated, 6-Cylinder Diesel Displacement: 358 cubic inches (5.86 Liters) Performance Horsepower Rated: Approximately 98 PTO horsepower (may vary slightly by configuration) Torque Peak: Specifications vary, refer to manual for precise figures Fuel System Fuel Injection: Bosch inline injection pump Fuel Type: Diesel Cooling System Coolant Type: Ethylene Glycol based (specific mixture and capacity detailed in manual) Lubrication System Oil Type: API CD or CES 20071 rated diesel engine oil (viscosity per manual, typically 15W-40) 🔧 Transmission Standard Transmission Type: Duplex Synchromesh Gearbox Optional Optional Transmission: Power Shift Transmission (optional on some configurations) Features Gear Selection: Multiple forward and reverse gears (specific number depends on configuration, typically 12 forward, 4 reverse) Pto: Standard 540/1000 RPM PTO (Power Take-Off) Transmission Fluid: Hy-Tran Plus or equivalent (IH Spec B-6 specification) 📐 Dimensions Exterior Wheelbase: Approx. 92.5 inches (2350 mm) Overall Length: Approx. 145 inches (3683 mm) Overall Width: Approx. 72 inches (1829 mm) at rear track Weights Operating Weight: Approx. 7,900 lbs (3583 kg) (configuration dependent) Front Tire Size: Commonly 7.50-16 (manual will specify variations) Rear Tire Size: Commonly 18.4-34 (manual will specify variations) 🛡️ Safety Features Ratings Rollover Protection: ROPS (Roll-Over Protective Structure) available as an option; manual covers its inspection and maintenance. Active Features Braking System: Hydraulic disc brakes Passive Features Operator Station: Ergonomically designed operator station for operator comfort and safety 💡 Technology Features Infotainment Operator Interface: Basic dashboard with essential gauges for engine monitoring (oil pressure, coolant temperature, ammeter, tachometer). Driver Assistance Power Steering: Standard hydraulic power steering system for ease of operation. Connectivity Lighting: Standard work lights and road lights depending on configuration. 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250 hours (refer to manual for exact specification and oil type). Transmission Fluid Change: Typically every 1000 hours (refer to manual for exact specification and fluid type). Air Filter Service: Check and service regularly based on operating conditions (as detailed in manual). Fluid Specifications Hydraulic Fluid: IH Hy-Tran Plus or equivalent (meets IH Spec B-6). Coolant: 50/50 mix of high-quality engine antifreeze and clean water (refer to manual for specific coolant type). Known Issues Common Wear Items: Clutch, hydraulic pump seals, PTO clutch packs, starter, alternator, front end components. Diagnostic Challenges: Hydraulic system performance issues, electrical gremlins, diesel injection timing. 📚 Vehicle History Brand Heritage Manufacturer: International Harvester (IH), a historical American manufacturer of agricultural and construction equipment. Model Evolution Series: Part of the IH '86 Series' of tractors, succeeding models like the 966 and preceding models in subsequent generations. Production Production Years: 1976-1979 Manufacturing Location: Rock Island, Illinois, USA 🏆 Awards & Recognition Recognitions Industry Impact: The 986 was a popular and capable tractor for its era, known for its robust build and performance in its horsepower class.