🏷️ Basic Information Identification Make: International Harvester Model: 986 Vehicle Type: Tractor 👋 Introduction Market Position Positioning: A comprehensive factory service manual for owners and mechanics of the International Harvester 986 tractor, designed to facilitate efficient and accurate repairs and maintenance. Competitive Analysis Value Proposition: Provides essential technical data and procedures that would otherwise require expensive dealer service, enabling cost savings and self-sufficiency for owners. Key Features Feature 1: All-encompassing coverage for repair and service. Feature 2: Structured layout with a table of contents for easy information retrieval. Feature 3: Focus on troubleshooting and addressing common issues. Feature 4: Digital format for convenient access and use on various devices. 📋 Manual Details Coverage Areas Coverage Description: Comprehensive service, repair, troubleshooting, and maintenance for the International Harvester Tractor 986. Page Count Estimated Pages: Not specified, but described as comprehensive. Manual Type Type: Factory Service Repair Manual / Workshop Manual / Troubleshooting Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Yes, detailed service and repair for the engine. Transmission: Yes, service and repair of transmission systems. Hydraulic System: Likely covered given tractor application. Electrical System: Yes, including wiring diagrams. Braking System: Yes, service and repair. Cooling System: Yes, maintenance and repair. Fuel System: Yes, service and troubleshooting. Steering System: Yes, service and repair. Operator Station: Likely covered, including controls and comfort features. Drivetrain: Yes, including differential and final drives. Power Take-Off Pto: Likely covered for PTO operation and maintenance. Procedures Included Routine Maintenance: Yes, including schedules and fluid specifications. Troubleshooting: Yes, dedicated troubleshooting guides. Component Disassembly Reassembly: Yes, detailed step-by-step instructions. Diagnostic Procedures: Yes, for identifying and resolving issues. Wiring Diagrams: Yes, for electrical system diagnosis and repair. Engine Overhaul: Yes, detailed procedures for engine rebuilds. Transmission Repair: Yes, covering component replacement and adjustment within the transmission and torque amplifier. Hydraulic System Service: Yes, likely includes testing, component replacement (pumps, valves, cylinders), and fluid maintenance. Electrical Diagnostics: Yes, with wiring diagrams and fault finding charts. Front Axle And Steering Service: Yes, for repair and maintenance. Rear Axle And Differential Service: Yes, including disassembly and reassembly. Power Take-Off Pto Service: Yes, likely covers PTO clutch and drive mechanisms. Front End Loader Installation And Service: Potential coverage, as loaders were common attachments. Check manual details. Technical Depth Depth: Comprehensive, covering from routine maintenance to in-depth repairs and overhauls. Accuracy: Factory-level specifications, tolerances, and procedures, crucial for correct repair. Diagrams: Likely includes detailed exploded views, schematic diagrams, and troubleshooting flowcharts. Special Tools: Likely lists any special tools required for specific repair procedures. 📊 Manual Specifications File Format File Type: PDF Compatibility: Compatible with Windows and Mac operating systems. Software Requirements: Adobe PDF Reader and WinZip (for potential archive compression). Print Quality Quality: Digital format, quality dependent on original source scanning/creation. Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Model: D-358 Diesel Engine Type: Direct Injection, Naturally Aspirated, 4-Cycle Diesel Displacement: 358 cubic inches (5.87 Liters) Bore X Stroke: 4.25 in. x 4.31 in. (108 mm x 110 mm) Compression Ratio: 16.0:1 (Typical) Horsepower Rated: Approx. 96 PTO HP (Subject to specific configuration and model year) Torque Peak: Approx. 265 lb-ft @ 1300 RPM (Subject to specific configuration and model year) Fuel System Fuel Type: Diesel Fuel Injection System: Roos or Bosch inline injection pump (model dependent) Fuel Filter Part Number: Refer to manual for specific PN, e.g., WIX 33490 (example for similar engines). 🔧 Transmission Standard Transmission Type: David Brown 12-Speed "Power Shift" (Synchromesh with Torque Amplifier) Number Of Gears Standard: 12 Forward, 4 Reverse (with Torque Amplifier) Features Torque Amplifier: Yes, provides 16 forward speeds and 4 reverse speeds via a 2-speed underdrive gear. Fluid Type Transmission Fluid: IH Hy-Trans Fluid (or equivalent agricultural lubricant meeting API GL-4 specifications). Fluid Capacity Transmission Fluid Capacity: Approx. 15 US quarts (14.2 Liters) (Check manual for exact capacity). 📐 Dimensions Exterior Length: Approx. 140 inches (3556 mm) Width: Approx. 75 inches (1905 mm) at rear wheels (variable). Height: Approx. 102 inches (2591 mm) to top of exhaust stack. Weights Operating Weight: Approx. 7,800 - 9,500 lbs (3538 - 4309 kg) depending on configuration and ballast. 💡 Technology Features Infotainment Infotainment System: N/A (Typical for this era of heavy agricultural machinery, basic radio may have been an option). Driver Assistance Driver Assistance Features: N/A (Primary focus on mechanical and hydraulic systems). Connectivity Connectivity Features: N/A 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250 hours of operation, or annually. Fuel Filter Replacement: Typically every 250-500 hours, or as needed. Air Filter Cleaning Replacement: Inspect frequently, clean/replace as needed, often based on operating conditions. Fluid Specifications Engine Oil Specification: API CD or higher, SAE 30W (or 15W-40 for broader temperature range). Check manual for exact spec. Engine Oil Capacity: Approx. 12 US quarts...