Basic Information Identification Make: International Harvester Model: 786, 886, 986, 1086 Product Type: Service Repair Manual Introduction Market Position Target Audience: Professional Technicians, DIY Mechanics, Restoration Enthusiasts Competitive Analysis Comparison To Oem Manuals: Aims to provide equivalent information to OEM service manuals Key Features Download Advantage: Instant download, no shipping costs or delays Navigability: Numbered table of contents for quick information retrieval Manual Details Coverage Areas Primary Coverage: Full Service and Repair Additional Coverage: Maintenance, Diagnostics, Troubleshooting, Rebuild, Restoration Page Count Estimated Pages: Extensive (Specific count not provided, but described as 'very detailed' and for 'professional technicians') Manual Type Type: Full Service Repair Manual Language Primary Language: English Format File Format: PDF Delivery Method: Instant Download Printability: Full Printable Requirements Software Requirements: Adobe PDF Reader, WinRAR Compatibility Operating Systems: All Versions of Windows & Mac Manual Coverage Systems Covered Engine Service: Detailed repair, rebuild, and maintenance procedures Transmission Service: Comprehensive repair and maintenance for all transmission types Electrical System: Detailed diagnostics, troubleshooting, and wiring diagrams Hydraulic System: Covered (Implied by comprehensive service scope for tractors of this era) Fuel System: Covered (Implied by engine service) Cooling System: Covered (Implied by engine service) Braking System: Covered (Implied by comprehensive service scope) Steering System: Covered (Implied by comprehensive service scope) Drivetrain: Covered (Implied by comprehensive service scope) Operator Station: Covered (Implied by restoration and repair scope) Procedures Included Routine Maintenance: Service schedules and procedures Troubleshooting: Detailed troubleshooting guides and diagnostic procedures Rebuilding: Comprehensive rebuild procedures for major components Restoration: Detailed procedures for refurbishing and restoring the tractor Component Repair: Step-by-step repair instructions Technical Depth Depth: Professional Technician Level Detail Level: Sub-step details, notes, cautions, and warnings Visual Aid Detail: Detailed illustrations, drawings, photos, and enlarged insets Manual Specifications File Format Format Type: PDF Print Quality Print Readability: High (Implied by professional technician focus and printable nature) Binding Type Binding: Digital (Downloadable PDF) Paper Type Paper Type For Printing: Standard Printer Paper (User's discretion) Engine Specifications Primary Engine Options Engine Types: Diesel (Likely D-series International Harvester engines; specific models not detailed in product info) Performance Horsepower Range: Varies by model (e.g., 786: ~75-85 HP, 1086: ~100-110 HP; specific figures require manual consultation) Torque Specifications: Varies by model (Requires manual consultation) Fuel System Fuel Type: Diesel Injection System: Likely mechanical injection pumps (details within manual) Transmission Standard Transmission Transmission Types: Various configurations including partially synchronized (e.g., 8-speed, 16-speed powershift/TA options) (Specifics for each model within manual) Optional Transmission Powershift Options: Trans-Axle (TA) and full Power Shift options were common (Details within manual) Features Gear Selection: Manual gear selection with synchronized or unsynchronized ranges, and power-assisted shifting for TA/Power Shift Dimensions Exterior Overall Length: Varies by model (Typical for this class of tractor, approx. 150-170 inches) Wheelbase: Varies by model (Typically around 90-100 inches) Weights Operating Weight: Varies by model (Approx. 7,000 - 9,000 lbs) Drawbar Horsepower: Lower than PTO horsepower, but crucial for work output (Details within manual) Safety Features Ratings Rollover Protection: ROPS (Roll Over Protection Structure) was becoming standard/optional and is covered in detailed manuals for safety. Active Features Braking System Type: Hydraulically actuated, wet disc brakes (standard on most models) Passive Features Seat Belt: Standard on ROPS equipped tractors Technology Features Infotainment Operator Comfort Features: Enclosed cabs with heating and ventilation (depending on configuration) were advancements for their time. Driver Assistance Power Steering: Standard hydrostatic power steering for ease of operation. Connectivity Pto Control: Independent Power Take-Off (PTO) with lever or electronic control (depending on model year and options). Maintenance Service Intervals Engine Oil Change: Typically every 100-250 hours of operation (Refer to manual for exact intervals based on usage) Hydraulic Fluid Change: Typically every 500-1000 hours (Refer to manual for specific recommendations) Fluid Specifications Engine Oil Type: API CD or CE rated diesel engine oil, SAE 15W-40 or 30 (Refer to manual for exact viscosity based on ambient temperature) Hydraulic Fluid Type: IH Hy-Tran (or equivalent tractor hydraulic fluid) (Refer to manual for specific IH part numbers and specifications) Transmission Fluid Type: IH Hy-Tran (or equivalent tractor hydraulic fluid) (Often shared with hydraulic system) Known Issues Common Wear Items: Clutch wear, seal leaks (engine, transmission, hydraulics), hydraulic pump efficiency degradation, PTO clutch wear. Electrical Reliability: While generally robust, aging wiring harnesses and starter issues can occur. Detailed diagrams are crucial. Vehicle History Brand Heritage Manufacturer: International Harvester (IH), a major American manufacturer of agricultural and industrial machinery. Model Evolution Series Placement: These tractors represent the '86 Series' which were significant updates to IH's tractor lineup, featuring more comfort and power. Production Production Years: Mid to late 1970s through early 1980s (e.g., 786: 1976-1981, 886: 1976-1981, 986: 1976-1981, 1086: 1976-1981) Manufacturing Location: United States (Primary) Awards & Recognition Recognitions Industry Impact: The 86 series was well-received for its power, comfort, and versatility, setting a benchmark for tractors of its era.