🏷️ Basic Information Identification Make: International Harvester Model: 986 Codes Model Designation: 986 👋 Introduction Market Position Target Audience: Owners and mechanics seeking to maintain, diagnose, and repair the International Harvester Tractor 986. Key Features Manual Value Proposition: Inexpensive way to keep the tractor working properly; provides detailed illustrations, diagrams, wiring schematics, and specifications; printable pages for workshop use. Manual Description Content Focus: Comprehensive repair and service information, suitable for both do-it-yourselfers and experienced mechanics. 📋 Manual Details Coverage Areas Primary Coverage: Complete service and repair for International Harvester Tractor 986 Specific Systems Covered: Engine Mechanical, Engine Electrical, Emission Control, Fuel System, Suspension, Clutch, Manual Transaxle, Automatic Transaxle (if applicable), Driveshaft and Axle, Steering, Brake System, Body Interior and Exterior, Body Electrical System, Restraint System Page Count Estimated Page Count: Variable (typical workshop manuals for this era can range from 500-1500 pages, depending on detail level) Manual Type Type: Workshop Service Repair Manual / Factory Service Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed overhaul procedures, component testing, specifications, adjustments, torque values for engine assembly (e.g., cylinder head, pistons, crankshaft, camshaft, timing gears). Engine Electrical: Wiring diagrams, starter system, charging system (alternator/generator), ignition system, component testing, troubleshooting electrical faults. Fuel System: Carburetor or injection system diagnosis, adjustment, repair, fuel pump, fuel filters, fuel lines. Transmission Clutch: Clutch operation, adjustment, replacement, hydraulic system, transmission disassembly, reassembly, gear selection, PTO operation. Hydraulic System: Hydraulic pump, control valves, cylinders, filters, fluid specifications, troubleshooting hydraulic performance issues, linkage adjustments. Steering Brakes: Power steering system diagnosis and repair, brake system components (master cylinder, calipers/drums, lines), bleeding procedures, parking brake adjustment. Cooling System: Radiator, thermostat, water pump, coolant specifications, flushing procedures. Electrical Body: Lighting system, instrumentation, battery, starter, charging system, wiring harness repair, body panel removal/installation (if applicable). Procedures Included Maintenance: Routine maintenance checks, fluid changes, filter replacements, lubrication points, greasing schedules. Troubleshooting: System-specific diagnostic flowcharts, symptom-based troubleshooting guides, common problem identification. Repair: Step-by-step disassembly and reassembly instructions for all major components and systems. Overhaul: Complete engine, transmission, and hydraulic system overhaul procedures. Diagnostics: Electrical system diagnostics with detailed wiring diagrams, component testing procedures, resistance and voltage checks. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to full engine and transmission rebuilds. Suitable for experienced mechanics and knowledgeable DIY users. 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Fully Printable Interactivity Zoom Functionality: Yes (Zoom IN/OUT) Delivery Method Delivery: Instant Download Software Requirements Required Software: Adobe PDF Reader, WinZip Compatibility Operating Systems: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: Diesel (typically 3.1-liter or 4.2-liter variations depending on specific build) Engine Model Code Example: DT-360 (3.9L Diesel for some variants, consult manual for exact match) Performance Horsepower Estimate: Approximately 70-85 PTO horsepower (varies by specific engine option and tuning) Torque Estimate: High torque output suitable for agricultural applications. Fuel System Injection Type: Direct Injection (common for IH diesel engines of this era) Fuel Type: Diesel Cooling System Cooling Method: Liquid-cooled 🔧 Transmission Standard Transmission Type Standard: T-34 (16-speed Power Shift) Optional Transmission Type Optional: May have variations or specific regional options. Features Powershift Capability: Yes, the T-34 transmission offers 16 forward and 8 reverse speeds with power shifting capabilities. Fluid Specifications Transmission Fluid Type: IH Hy-Trans Fluid or equivalent (consult manual for specific IH part numbers and approved alternatives) 📐 Dimensions Exterior Wheelbase Approx: Approximately 90-95 inches (2286-2413 mm) Weights Operating Weight Approx: Approximately 7,500 - 8,500 lbs (3400 - 3855 kg) 🛡️ Safety Features Ratings Rollover Protection: ROPS (Roll-Over Protective Structure) often optional or dealer-installed depending on year and configuration. Manual will detail safety precautions and installation if applicable. Active Features Braking System Type: Hydraulically actuated, internal expanding shoe or disc brakes (specific type depends on configuration). Passive Features Seatbelts: Typically available, installation and type vary by original specification. 💡 Technology Features Infotainment Instrumentation: Basic dashboard instrumentation including tachometer, speedometer, fuel gauge, temperature gauge, oil pressure light, and warning indicators. Driver Assistance Pto Control: Live PTO (Power Take-Off) engagement and control. 🔧 Maintenance Service Intervals Engine Oil Change Interval: Typically every 250 hours or annually (consult manual for precise recommendations based on operating conditions). Transmission Fluid Change Interval: Typically every 1000-1200 hours or annually for the powershift transmission. Fluid Specifications Engine Oil Specification: API CD or higher, SAE 15W-40 Diesel Engine Oil recommended (verify with manual for exact viscosity and API service classification). Hydraulic Fluid Specification: IH Hy-Trans Fluid or an equivalent universal tractor transmission fluid (UTTF) meeting specific IH specifications. Refer to the manual for precise fluid type and part numbers. Coolant Specification: Ethylene Glycol based coolant, typically a 50/50 mix with distilled water. Consult manual for specific type and additives. Known Issues Common Wear Points: Clutch wear, hydraulic pump wear, PTO clutch pack wear, potential for front...