The International Harvester (IH) 786 and 886 tractors represent a lineage of robust agricultural machinery, produced during the late 1970s and early 1980s. These tractors, powered by reliable diesel engines such as the International Harvester DT-402, were engineered for demanding farm work, offering substantial horsepower and torque. Key features often included a 16-speed transmission with a Torque Amplifier (TA) system, providing a wide range of gears for optimal performance in various field conditions. Their solid construction and focus on functional power transfer underscore International Harvester's heritage as a significant American manufacturer of agricultural equipment, known for dependability in the field. This comprehensive service repair manual provides essential information for the maintenance and repair of IH 786 and 886 tractors. It covers a wide array of systems, including the engine, diesel fuel system, cooling system, clutch, torque amplifier, transmissions, brakes, hydraulic system, power steering, PTO, electrical system, cab, and front systems. The manual includes detailed procedures for standard maintenance, scheduled servicing, and complete disassembly and repair, supported by hundreds of photos and illustrations. Its purpose is to assist both do-it-yourself owners and experienced mechanics in keeping these tractors in optimal working condition, ensuring longevity and performance through accurate guidance and technical specifications. 🏷️ Basic Information Identification Make: International Harvester (IH) Model: 786 / 886 Product Type: Service Repair Manual PDF Codes Manual Identifier: IH-786-886-SRM-PDF 👋 Introduction Market Position Positioning: Essential resource for owners and technicians of IH 786/886 tractors Value Proposition Cost Savings: Inexpensive way to keep vehicle working properly, saves money on mechanic labor Key Features Convenience: Digital format is less expensive and more convenient than old paper manuals Accessibility: Easy to use, accessible on multiple devices 📋 Manual Details Coverage Areas Primary Coverage: IH International Harvester 786 and 886 Tractors All Styles Covered: True Page Count Estimated Page Count: Hundreds of pages Manual Type Type: Official Full Factory Service Repair Workshop Manual Language Language: English Format Format: PDF (Digital Download) Compatibility: All Versions of Windows and Mac, Smartphones, Tablets (via Web Browser) Accessibility: Web browser access on any computer or mobile device Printability Print Option: Printable (entire manual or specific pages) Licensing Licensing: No extra fees, No expiry dates 📖 Manual Coverage Systems Covered Engine: Yes Diesel Fuel System: Yes Diesel Turbocharger: Yes Cooling System: Yes Clutch: Yes Torque Amplifier: Yes Transmission Speed: Yes Transmission Range: Yes Transmission Brake: Yes Final Drive: Yes Differential: Yes Brakes: Yes Hydraulic System: Yes Power Steering System: Yes Power Take Off Pto: Yes Electrical System: Yes Cab: Yes Front System: Yes Multiple Control Valve: Yes Procedures Included Maintenance: Yes (standard maintenance, scheduled servicing) Repair: Yes (step-by-step instructions based on complete disassembly) Troubleshooting: Yes (implied by comprehensive repair information) Technical Depth Depth: Complete factory level service and repair Visual Aids Photos Illustrations: Hundreds of photos and illustrations Target Audience Audience: Do-it-yourselfers and experienced mechanics 📊 Manual Specifications File Format File Type: PDF Reader Requirement: Adobe PDF Reader (free) Compression Requirement: Winzip (free, for download) Print Quality Print Resolution: High quality (suitable for printing) Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF, user prints on desired paper) ⚙️ Engine Specifications Primary Engine Engine Family: International Harvester DT-402 Diesel (typical for 786/886) Engine Displacement: Approximately 402 cubic inches (6.6 L) Fuel Type: Diesel Performance Horsepower Range: Varies by specific model and configuration, typically 70-90 HP range Torque Range: Varies by specific model and configuration, significant torque for farm work Fuel System Fuel System Type: Direct Injection Diesel Turbocharger: Yes, often equipped with a turbocharger 🔧 Transmission Standard Transmission Type: Typically a 16-speed transmission with Torque Amplifier (TA) Optional Optional Transmission: Other configurations may exist, but TA is a key feature Features Torque Amplifier: Provides 16 forward and 8 reverse speeds by splitting gears 📐 Dimensions Exterior Wheelbase: Varies by configuration (2WD/4WD, tires) Weights Operating Weight: Typically around 8,000 - 10,000 lbs (3600 - 4500 kg) Drawbar Horsepower: Designed for substantial fieldwork, indicating significant power transfer 🛡️ Safety Features Ratings Safety Standards: Designed to meet agricultural safety standards of its era Active Features Braking System: Hydraulically activated wet disc brakes for reliable stopping power 💡 Technology Features Infotainment Infotainment Features: N/A (Focus on functional agricultural operation, not modern infotainment) Driver Assistance Driver Assistance: N/A (Basic tractor controls, no electronic driver aids) 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250 hours of operation or annually, consult manual for specific OEM recommendation. Fuel Filter Replacement: Recommended at regular intervals, often with oil changes or as needed based on fuel quality. Hydraulic Fluid Change: Typically every 1000 hours or 2 years, dependent on usage and fluid condition. Fluid Specifications Engine Oil Type: API CD or CE rated diesel engine oil (e.g., 15W-40) Hydraulic Transmission Fluid: IH Hy-Trans Fluid or equivalent (refer to manual for exact specification). Coolant Type: Ethylene glycol-based antifreeze with...