Basic Information Identification Make: International Harvester Model: 986 Tractor Introduction Market Position Target Audience: Owner-operators, farm technicians, agricultural repair shops, and DIY enthusiasts. Competitive Analysis Value Proposition: Empowers users to perform repairs independently, saving costs and ensuring quality through detailed, expert guidance. Key Features Convenience: Instant download, accessible on multiple devices, eliminating the need for physical searches. Knowledge Acquisition: Provides in-depth understanding of vehicle intricacies for efficient problem-solving, even for those with limited technical knowledge. Cost Savings: Enables users to bypass professional mechanic fees by performing repairs and maintenance themselves. Manual Details Coverage Areas Primary Coverage: Complete service, repair, and maintenance for the International Harvester 986 Tractor. Secondary Coverage: Troubleshooting, diagnostics, wiring diagrams, component-specific repair. Page Count Estimated Page Count: Significant (exact number not provided, but implies comprehensive coverage). Manual Type Type: All Service Repair Manual Language Language: English Format Format: PDF Download Manual Coverage Systems Covered Engine Service Repair: Detailed procedures for engine disassembly, assembly, troubleshooting, and overhaul. Transmission Service Repair: In-depth repair and maintenance of the transmission system. Brake System: Service and repair procedures for the tractor's braking system. Electrical System: Comprehensive coverage of the electrical system, including wiring diagrams. Suspension: Maintenance and repair of the suspension components. Steering: Service and repair for the tractor's steering mechanism. Cooling System: Procedures for maintaining and repairing the cooling system. Fuel Injection Fuel System: Detailed information on fuel injection and the complete fuel system. Emission System: Information related to emission control systems. Engine Control System: Details on the tractor's engine control components and functions. Chassis Body: Repair and maintenance of the tractor's chassis and body components. Restraint System: Information pertaining to any restraint systems (if applicable). Axle: Service and repair of the tractor's axle assemblies. Procedures Included General Maintenance: Procedures for routine inspections, adjustments, and preventative maintenance. Troubleshooting: Step-by-step diagnostic procedures for identifying and resolving common issues. Disassembly Reassembly: Detailed instructions for taking apart and putting back together various components and systems. Periodic Lubrication: Guidelines and schedules for lubrication of all moving parts. Technical Depth Depth: Comprehensive (covers disassembly, reassembly, repair, servicing, maintenance, refurbishment, renovation, mending, fixing). Manual Specifications File Format Format: PDF Requirements: Adobe PDF Reader & WinZip Compatibility Operating Systems: All versions of Windows & Mac Print Quality Printability: Assumed high quality for digital download, enabling printing of specific sections or the entire manual. Binding Type Binding: N/A (Digital download) Paper Type Paper: N/A (Digital download) Engine Specifications Primary Engine Engine Type: Diesel Engine Configuration: Inline 6-Cylinder Performance Displacement: Approximately 360 cubic inches (5.9 Liters) - based on typical IH 300 series engines of this era. Horsepower Rating: Estimated 90-100 PTO horsepower (specific rating varies by tune and exact configuration). Torque Rating: Significant torque for heavy draft work, specific rating not provided but characteristic of large displacement diesel. Fuel System Injection System: Direct injection, likely a Bosch inline injection pump or similar. Fuel Type: Diesel Fuel Cooling System Cooling Method: Liquid-cooled Lubrication Oil Type: CD/CE or higher API service category diesel engine oil (e.g., 15W-40) - Manual will specify exact grade. Transmission Standard Transmission Type: Manual, likely a synchronized multi-speed gearbox. Optional Powershift: May have offered a powershift option or creeper gears, details in manual. Features Pto Speed: Standard 540/1000 RPM PTO, likely with an independent PTO clutch. Dimensions Exterior Wheelbase: Typical for a 2WD tractor of this class, precise measurement would be in manual. Weights Operating Weight: Estimated 8,000 - 9,000 lbs (without ballast), manual will provide exact figures. Safety Features Ratings Rollover Protection: May have had optional ROPS (Roll Over Protective Structure) or a factory-installed cab providing protection; manual details its importance and inspection. Active Features Braking System: Hydraulic disc brakes, typically internal expanding or external contracting on the drive axle/transmission. Passive Features Operator Station: Ergonomic considerations and safety aspects of the operator's seat and controls. Technology Features Infotainment Entertainment System: Basic operator comfort features, no modern infotainment systems. Radio might have been an option. Driver Assistance Assistance Features: Focus on mechanical systems for operation; no electronic driver aids. Maintenance Service Intervals Engine Oil Change: Typically every 250-500 operating hours, or annually. Manual specifies exact interval and oil type. Transmission Fluid Change: Varies by transmission type and usage, manual will detail. Fluid Specifications Hydraulic Fluid: IH Hy-Trans or equivalent UTF (Universal Tractor Transmission Fluid) - manual will specify exact grade and capacity. Coolant Type: Ethylene Glycol based coolant with appropriate corrosion inhibitors, manual specifies mixture ratio and type. Known Issues Engine Wear: Common for high-hour diesels: injector pump, turbocharger (if equipped), piston rings, valve seats. Transmission Issues: Potential wear in clutch packs, synchros, or hydraulic components in powershift transmissions. Manual aids in diagnosing these. Electrical Gremlins: Wiring harness degradation, switch failures, and alternator/starter issues are common in older machinery. Wiring diagrams are crucial. Vehicle History Brand Heritage Manufacturer: International Harvester (IH), a major American manufacturer of agricultural...