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International Harvester

International Harvester 1086 Tractor Service Repair Workshop Manual

International Harvester 1086 Tractor Service Repair Workshop Manual

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Machine data plate
Brand
International Harvester
Equipment
Tractors
Models covered
1086
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you — re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your serial range? Ask us before you buy
🏷️ Basic Information
Identification
Make:
International Harvester
Model:
1086 Tractor
Model Variant:
1086 (86 Series)
Production Years:
1976 - 1981
👋 Introduction
Market Position
Target Audience:
Owners, mechanics, and technicians working on the International Harvester 1086 Tractor.
Market Segment:
Heavy-duty agricultural tractor, representing a significant model in International Harvester's tractor lineup during its production era.
Competitive Analysis
Primary Competitors:
John Deere 4040, 4240; Case IH 970, 1070; Massey Ferguson and others in the high-horsepower row-crop tractor segment of the late 1970s and early 1980s.
Advantage:
International Harvester 1086 offers robust diesel performance, versatile transmission options, and proven reliability in demanding farm operations.
Key Features
Engine Power:
Robust diesel engine performance, delivering substantial horsepower and torque for demanding farm tasks.
Transmission:
Often equipped with a high-torque-capacity transmission, such as the Power Shift (Hydra-Shuttle), offering flexible gear selection.
Hydraulic Capacity:
Capable hydraulic system for operating various implements and attachments.
Operator Comfort:
Offered various cab options providing a degree of operator comfort for extended working periods.
📋 Manual Details
Coverage Areas
Primary Coverage:
Service and Repair
Secondary Coverage:
Maintenance, Troubleshooting, Diagnostics
Manual Details
Page Count:
N/A - Comprehensive factory manual, digital format
Manual Type:
Factory Service Repair Manual / Workshop Manual / Troubleshooting Manual / Maintenance Manual
Language:
English
Format:
PDF
Delivery Method:
Instant download
📖 Manual Coverage
Systems Covered
Engine Systems:
Engine overhaul, fuel system, lubrication system, cooling system, intake and exhaust systems, engine timing, cylinder head, crankshaft, pistons, connecting rods, camshaft, valve train.
Transmission Systems:
Power Shift transmission (Hydra-Shuttle), clutch, gearbox, final drives, differential, PTO (Power Take-Off).
Hydraulic Systems:
Hydraulic pump, control valves, cylinders, remote hydraulic outlets, hitch control system, steering hydraulics.
Electrical Systems:
Starter, alternator, battery, ignition system (if applicable), lighting, wiring harnesses, gauges, dashboard indicators, troubleshooting electrical faults.
Chassis And Suspension:
Front axle, rear axle, steering system (including power steering), braking system, wheels, tires.
Operator Station And Body:
Operator's cab (if equipped), controls, seating, sheet metal, fenders, platform.
Procedures Included
Maintenance:
Scheduled maintenance, fluid changes, filter replacement, lubrication points, pre-operation checks, post-operation checks.
Repair Procedures:
Step-by-step repair instructions for all major components and systems, including disassembly, inspection, repair, and reassembly.
Troubleshooting Guides:
Diagnostic charts, symptom-based troubleshooting, common problem identification and solutions.
Technical Specifications:
Detailed specifications for all components, including torque values, clearances, tolerances, fluid capacities, electrical specifications.
Wiring Diagrams:
Comprehensive electrical wiring diagrams for all systems, aiding in diagnosis and repair.
Engine Timing Adjustment:
Procedures for setting and adjusting engine timing.
Injector Testing And Replacement:
Detailed steps for testing and replacing fuel injectors.
Transmission Shift Lever Adjustment:
Procedures for adjusting the powershift control levers.
Hydraulic Pump Testing And Replacement:
Instructions for diagnosing and replacing the main hydraulic pump.
Brake System Overhaul:
Detailed instructions for servicing and overhauling the braking system.
Front Axle And Steering Repair:
Guidance on the repair and maintenance of the front axle and steering components.
Technical Depth
Depth:
Comprehensive factory-level detail covering routine maintenance to major overhauls and complex diagnostics.
Diagnostic Charts:
Inclusion of comprehensive diagnostic charts for various operational issues.
Torque Specifications:
Exact torque values provided for critical fasteners throughout the tractor.
Clearances And Tolerances:
Precise measurements for component clearances and operational tolerances.
Special Tool Recommendations:
Indication of any specialized tools required for specific repair procedures.
Parts Information
Part Numbers:
Includes part numbers for components where applicable.
OEM References:
References to International Harvester original equipment manufacturer specifications.
📊 Manual Specifications
File Format
File Type:
PDF
Compatibility:
Compatible with Adobe PDF Reader, usable on Windows and Mac operating systems.
Searchability:
Searchable text within PDF
Print Quality
Print Quality:
High-resolution scans suitable for printing
Binding Type
Binding Type:
Digital (no physical binding)
Paper Type
Paper Type:
N/A - digital download
⚙️ Engine Specifications
Primary Engine
Engine Make:
International Harvester
Engine Model:
D-358 (Typically)
Engine Type:
Naturally Aspirated Diesel
Cylinders:
6
Displacement:
358 cubic inches (5.9 liters)
Power Output:
Approximately 108 horsepower (PTO)
Fuel System
Fuel Type:
Diesel
Injection:
Direct injection (typical)
🔧 Transmission
Standard Transmission
Type:
Power Shift (Hydra-Shuttle)
Gears:
16 forward / 8 reverse (typical)
Optional Transmission
Type:
Synchro-Shift (if equipped)
Features
Shuttle Shift:
Hydra-Shuttle provides electronic/hydraulic shuttle shift for easy direction changes.
PTO:
Independent PTO with multiple speeds (typical)
📐 Dimensions
Exterior
Wheelbase:
Approximately 98.5 inches (2502 mm)
Length:
Approximately 160 inches (4064 mm)
Weights
Curb Weight:
Approximately 11,650 lbs (5285 kg)
🛡️ Safety Features
Ratings / Crash Test Information
Safety Ratings:
N/A - not applicable for agricultural tractors
Active Features
Brakes:
Hydraulic disc brakes (typical)
Steering:
Power steering
Passive Features
Rollover Protection:
Rollover Protective Structure (ROPS) or cab (if equipped)
💡 Technology Features
Infotainment
Audio System:
N/A - not equipped with audio system
Driver Assistance
Hitch Control:
Electronic draft control (if equipped)
Monitoring:
Dashboard gauges for engine, transmission, and hydraulic pressures.
🔧 Maintenance
Service Intervals
Oil Change:
Every 100 hours (typical)
Hydraulic Fluid:
Every 500 hours (typical)
Coolant:
Every 1000 hours or as needed
Fluid Specifications
Engine Oil:
API CD or higher, SAE 30 or 15W-40
Hydraulic/Transmission Oil:
Hy-Tran or equivalent
Coolant:
Ethylene glycol based with corrosion inhibitors
Known Issues / Common Wear Items
Injection Pump:
May require adjustment or rebuild over time
Hydraulic Pump:
Possible wear on gears and seals
Brakes:
Brake discs may wear and need replacement
Electrical:
Wiring harnesses may degrade
📚 Vehicle History
Brand Heritage
Manufacturer:
International Harvester - renowned for durable agricultural equipment.
Model Evolution
Series:
Part of the '86 Series' tractors introduced in 1976.
Successor:
Followed by the International 5088 and later Case IH models after 1985 merger.
Production Location
Plant:
Farmall Works, Rock Island, Illinois
🏆 Awards & Recognition
Recognitions
Recognition:
The 86 Series was well-regarded for its advanced engineering and reliability.
Historical Significance:
One of the last tractor lines produced under the International Harvester brand before the merger with Case.

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Check the serial range before you buy

Manufacturers change procedures and part numbers by serial-number break. If your data plate shows a serial prefix that is not listed above, contact us with the model and serial number and we will confirm coverage before you order.

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