Target Audience:
Owners, operators, technicians, and mechanics seeking to maintain, repair, or overhaul the International Harvester 1086 tractor.
Manual Advantage:
Provides comprehensive, factory-level information, ensuring accurate and efficient repairs, saving time and money compared to generic repair guides or trial-and-error methods.
Information Accessibility:
Well-structured with a table of contents for easy navigation and quick information retrieval.
Repair Confidence:
Empowers users to perform repairs and maintenance independently, fostering a deeper understanding of the tractor's systems.
Cost Savings:
Enables DIY repairs, significantly reducing labor costs associated with professional servicing.
Primary Coverage:
All service and repair information for International Harvester Tractor 1086
Specific Sections Mentioned:
Troubleshooting, maintenance schedule, wiring diagrams
Estimated Page Count:
Typically 500-1000+ pages for a comprehensive factory service manual of this era.
Manual Type:
Factory Service Repair Manual / Workshop Manual / Shop Manual / Troubleshooting Guide
Powertrain:
Engine, transmission, clutch, differential, final drives, PTO
Hydraulics:
Hydraulic system, pumps, valves, cylinders, filters, fluid specifications
Electrical:
Starting system, charging system, ignition system, lighting, instrument panel, wiring diagrams
Chassis And Running Gear:
Front axle, steering system, rear axle, brakes, wheels and tires, hitch and drawbar
Operator Station:
Cab (if equipped), controls, seat, heating/cooling (if equipped)
Maintenance:
Lubrication schedule, fluid checks and changes, filter replacements, component inspections
Troubleshooting:
Diagnostic charts, symptom-based troubleshooting, fault diagnosis for all major systems
Repair And Overhaul:
Detailed step-by-step instructions for disassembly, repair, assembly, and adjustment of all major components and systems
Diagnostics:
Component testing, specifications for adjustments, calibration procedures
Depth Of Coverage:
Comprehensive, covering from routine maintenance to complete engine, transmission, and hydraulic overhauls. Includes detailed specifications, torque values, and clearances.
Readability:
Optimized for digital viewing and printing. Searchable text for efficient information retrieval.
Software Requirements:
Adobe PDF Reader, WinZip (for compressed files if applicable)
Compatibility:
Compatible with all versions of Windows and macOS
Print Quality:
High-resolution digital scans or original factory document quality.
Binding Type:
Not Applicable (Digital PDF format)
Paper Type:
Not Applicable (Digital PDF format)
Engine Model:
International Harvester DT-414 (typically)
Engine Type:
4-stroke, turbocharged, direct injection diesel
Displacement:
414 cubic inches (6.8 liters)
Horsepower Rated:
Approximately 125 engine horsepower (net)
Torque Rated:
Approximately 320 lb-ft (net)
Injection System:
Bosch inline injection pump
Cooling Type:
Liquid-cooled
Oil Type Specification:
API CD or CES 20071 (e.g., IH Hy-Trans or equivalent with diesel rating)
Engine Oil Capacity:
10 quarts (9.5 liters) with filter change
Transmission Type:
International Harvester 16-speed Power Shift (2WD) or 10-speed Synchro-Range (MFWD/4WD variations)
Power Take Off Pto:
540/1000 RPM, independent PTO
Transmission Hydraulic Fluid:
IH Hy-Trans (or equivalent meeting UTTO specifications)
Transmission Hydraulic Fluid Capacity:
Approximately 20 gallons (75.7 liters)
Wheelbase:
Approximately 90.5 inches (2299 mm)
Operating Weight:
Approximately 10,500 - 12,000 lbs (4760 - 5443 kg), depending on configuration
Drawbar Horsepower:
Varies based on tractor configuration and adjustments, but typically around 105-110 drawbar HP.
Operator Interface:
Functional and robust operator controls and instrumentation, focused on utility and durability rather than advanced infotainment.
Steering System:
Power steering system for ease of operation.
Auxiliary Connections:
Typically includes hydraulic remote outlets for implements, PTO engagement, and a three-point hitch control system.
Electrical Schematics:
Detailed wiring diagrams are a key feature of this manual, essential for diagnosing and repairing electrical faults.
Engine Oil And Filter Change:
Every 250 hours or annually, whichever comes first (refer to manual for specific interval).
Transmission Hydraulic Fluid Change:
Every 1000 hours or annually (refer to manual for specific interval).
Fuel Filter Replacement:
As needed, or at specified intervals to prevent clogging and ensure performance.
Air Filter Service:
Check and service at 250-hour intervals or more frequently in dusty conditions.
Engine Coolant:
Ethylene glycol-based permanent antifreeze (50/50 mix with distilled water)
Common Wear Points:
Clutch wear, hydraulic pump wear, turbocharger seals (on turbocharged models), front axle kingpins and bushings.
Electrical System Notes:
Older wiring harnesses can degrade; check for corrosion and loose connections. Ignition switch and starter solenoid are common service items.
Transmission Notes:
Power Shift transmission requires specific maintenance; refer to manual for clutch pack testing and hydraulic pressure checks.
Brand Significance:
International Harvester was a major American manufacturer of agricultural and construction machinery, known for its robust and innovative tractors.
Model Lineage:
Part of the highly successful '86' series, which replaced the earlier '76' series and offered significant upgrades in power, comfort, and technology. The 1086 was a popular mid-range tractor.
Production Years:
Approximately 1976 - 1981
Manufacturing Location:
USA (e.g., Rock Island, Illinois; Louisville, Kentucky)
