🏷️ Basic Information Identification Make: International Harvester Model: 786, 886, 986, 1086 Product Type: Service Repair Manual (WSM) 👋 Introduction Market Position Target Audience: Owners, operators, and maintenance personnel of International Harvester 786, 886, 986, and 1086 tractors seeking to perform repairs and maintenance themselves. Tractor Segment: Mid-range row-crop and utility tractors, known for their power, durability, and versatility in various agricultural applications. Key Features Value Proposition: Enables cost savings by facilitating DIY repairs with easy-to-follow, step-by-step instructions, pictures, and wiring diagrams. Manual Benefit: Empowers users with knowledge to handle repairs, reducing reliance on external mechanics and increasing tractor uptime. Competitive Analysis Market Competitors Era: Competed with John Deere 40 series, Ford 6600/7600 series, Massey Ferguson 500/600 series, and Case 20/70 series tractors. 📋 Manual Details Coverage Areas Systems Covered: Engine, Transmission, Hydraulics, Electrical System, Fuel System, Cooling System, PTO, Steering, Brakes, Front Axle, Rear Axle, Operator Station, Chassis, Troubleshooting, Maintenance. Page Count Estimated Page Count: Comprehensive (Exact number not specified, but described as 'full professional quality in depth') Manual Type Manual Type: Service Repair Manual (Workshop Manual) Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Coverage: Detailed diagnostics, repair procedures, specifications, and maintenance for diesel engines (likely D-358, D-414, D-436, D-466 variants depending on specific model). Transmission Coverage: Repair and overhaul of transmissions, including powershift and synchronized gearboxes (e.g., T-18, T-22, T-23, 8-speed synchronized). Hydraulic Coverage: Troubleshooting, repair, and adjustment of the hydraulic system, including pumps, valves, cylinders, and Power Take-Off (PTO) engagement. Electrical Coverage: Wiring diagrams, troubleshooting guides for electrical components, starter, alternator, lighting, and instrumentation. Steering System Coverage: Detailed procedures for servicing hydrostatic power steering systems, including pump, cylinder, and linkage adjustments. Brake System Coverage: Diagnosis and repair of hydraulic brake systems, including master cylinder, slave cylinders, and brake pedal linkages. Front Axle Coverage: Maintenance and repair of the planetary or bevel gear front axle, including steering knuckle and kingpin service. Rear Axle Drive Line Coverage: Procedures for servicing the rear differential, final drives, and PTO drive components. Procedures Included Routine Maintenance: Oil change intervals, filter replacement, lubrication points, fluid capacities, pre-operation checks. Major Repair Procedures: Engine overhaul, transmission rebuild, hydraulic system repair, front and rear axle disassembly and assembly. Troubleshooting: Systematic diagnostic procedures for common and uncommon faults across all major vehicle systems. Engine Troubleshooting: Diagnosing issues such as hard starting, excessive smoke, loss of power, and rough running. Transmission Troubleshooting: Addressing problems like gear grinding, clutch slippage, and power shift engagement issues. Electrical Diagnostics: Detailed fault finding for starting systems, charging systems, lighting circuits, and dashboard indicators. Calibration Procedures: Instructions for calibrating hydraulic systems, PTO engagement, and potentially engine fuel systems. Technical Depth Depth Of Information: In-depth, professional quality with step-by-step instructions, illustrations, and diagrams suitable for both experienced mechanics and owner-performed repairs. Component Disassembly Assembly: Detailed, illustrated instructions for taking apart and reassembling major components like the engine, transmission, and hydraulic pump. Torque Specifications: Comprehensive list of torque values for critical fasteners across all systems to ensure proper assembly and prevent component damage. 📊 Manual Specifications File Format PDF Quality: High-quality PDF, suitable for printing. Searchability: Likely searchable PDF, allowing for quick access to specific topics and keywords. Media Type: Digital Downloadable File Print Quality Printability: Full printable. Users can print specific pages as needed. Binding Type Delivery Method: Instant Download (Digital product) Paper Type Digital Requirements: Requires Adobe PDF Reader. Compatibility Operating Systems: Compatible with all versions of Windows & Mac. ⚙️ Engine Specifications Primary Engine Engine Options: IH DT-358 (786, 886), IH DT-414 (986), IH DT-466 (1086). Exact engine varies by model and regional specifications. Performance Horsepower Range Net Flywheel Approx: 786: ~70 HP, 886: ~80 HP, 986: ~100 HP, 1086: ~120 HP (These are approximate and depend on specific configurations and testing standards.) Engine Torque Approx: Torque figures vary significantly by engine displacement but are generally robust, providing ample pulling power. (e.g., DT-466 could produce over 300 lb-ft torque). Fuel System Fuel Type: Diesel Injection System: Typically Bosch inline injection pumps or Roosa Master rotary pumps, depending on engine variant. Engine Diagnostics Compression Testing: Includes specifications and procedures for performing compression tests to assess engine health. 🔧 Transmission Standard Transmission Options: Standard options often included an 8-speed synchronized gear transmission and a 16-speed synchronized transmission with a Power Shift (Hi-Lo) option. Some models also offered a full Power Shift transmission. Optional Power Shift Availability: Available as an option on some models (e.g., 786, 886, 986, 1086) providing on-the-go gear changes. Features Pto Options: Standard PTO (540/1000 RPM) and optional 540/1000 RPM PTO, with independent or transmission-driven options. Differential Lock: Operated via a foot pedal or lever, aiding traction in challenging conditions. 📐 Dimensions Weights Operating Weight Approx: Range from approximately 8,000 lbs (3600 kg) for the 786 to over 10,000 lbs (4500 kg) for the 1086,...