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International Harvester

International Harvester 986 Tractor Service Repair Workshop Manual

International Harvester 986 Tractor Service Repair Workshop Manual

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Machine data plate
Brand
International Harvester
Equipment
Tractors
Models covered
986
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:
986 Tractor
Model Variant:
986 (factory service manual)
Production Years:
1977-1981
Product Information
Product Name:
International Harvester 986 Tractor Factory Service Repair Manual
Product Type:
Factory Service Repair Manual
👋 Introduction
Market Position
Target Audience:
Professional technicians and experienced owners
Market Position:
Heavy-duty agricultural tractor
Competitive Advantage
Advantage:
Factory-level depth with step-by-step procedures and diagrams for full service and repair
Key Features
Convenience:
Easy downloading and immediate access for repairs
Cost Savings:
Enables significant cost savings on repairs by empowering self-service
Knowledge Acquisition:
Provides in-depth vehicle knowledge for emergencies and routine maintenance
Accessibility:
Repair anytime, anywhere, on any compatible device
Information Layout:
Well-organized with a table of contents for easy navigation
📋 Manual Details
Coverage
Coverage Areas:
Service, repair, and maintenance of the International Harvester 986 Tractor
Specific Components:
Engine, transmission, hydraulics, electrical system, steering, brakes, PTO, hitch, front axle, final drives, operator station
Publication Details
Page Count:
Not specified - comprehensive coverage
Manual Type:
Factory Service Repair Manual / Workshop Manual / Troubleshooting Guide
Purpose:
Comprehensive guide for diagnosing, repairing, and maintaining the International Harvester 986 Tractor.
Language:
English
Format:
PDF
Delivery Method:
Instant download
📖 Manual Coverage
Systems Covered
Engine:
Detailed repair, diagnostics, and overhaul of the engine systems
Transmission:
Service and repair of the transmission, including clutch and gearbox
Hydraulics:
Comprehensive coverage of the hydraulic system, including pump, valves, and cylinders
Electrical:
Detailed wiring diagrams and electrical system diagnostics
Fuel System:
Service and troubleshooting of the fuel injection system
Cooling System:
Maintenance and repair of the cooling system components
Braking System:
Service and repair of the braking system, including hydraulic and mechanical aspects
Steering System:
Repair and adjustment of the steering mechanism, including power steering
Powertrain:
All aspects of powertrain maintenance and repair
Chassis:
Frame, axle, and suspension service
Operator Station:
Service and repair of the operator's cab and controls
Power Take Off:
Service and maintenance of the PTO system
Hitch System:
Operation and repair of the tractor's three-point hitch system
Procedures Included
Maintenance:
Scheduled maintenance procedures and intervals
Troubleshooting:
Comprehensive troubleshooting guides for common and uncommon issues
Repair:
Detailed step-by-step repair procedures for all major components
Rebuilds:
Full engine, transmission, and hydraulic system rebuild instructions
Diagnostics:
Advanced diagnostic techniques and fault finding
Adjustments:
Calibration and adjustment procedures for various systems
Installation:
Guidance on component installation and replacement
Wiring Diagrams:
Detailed electrical system wiring diagrams for troubleshooting and repair
Torque Specifications:
Critical torque specifications for fastener tightening
Schematics:
Hydraulic and electrical schematics to understand system flow and operation
Technical Depth
Depth:
Factory-level, comprehensive coverage suitable for professional technicians and experienced owners
Detail Level:
In-depth technical explanations, specifications, and diagrams
Diagnostic Tools:
Information on required special tools and diagnostic procedures
Parts Information
Parts Identification:
Detailed part numbers and diagrams for ordering correct components
📊 Manual Specifications
File Format
File Type:
PDF
Compatibility:
Compatible with all Windows and Mac versions
Requirements:
Adobe PDF Reader
Searchability:
Searchable text for quick information retrieval
Print Details
Print Quality:
High quality print-ready pages with clear diagrams
Binding Type:
Digital download
Paper Type:
N/A - digital product
⚙️ Engine Specifications
Primary Engine
Engine Model:
International Harvester DT-466
Cylinders:
Inline 6-cylinder diesel
Displacement:
466 cubic inches (7.6 liters)
Fuel Type:
Diesel
Block Type:
Cast iron, wet sleeve cylinder liners
Performance
Horsepower:
Approximately 110-120 PTO horsepower (varies slightly by specific configuration)
Torque:
High torque output, typical for its class
Fuel System
Injection Type:
Direct injection
Pump Type:
Typically a Bosch inline or rotary injection pump
🔧 Transmission
Standard Transmission
Type:
International Harvester 16-speed Power Shift
Gear Ranges:
16 forward, 8 reverse (with powershift)
Powershift Operation:
Electro-hydraulic control for on-the-go shifting
Optional Transmission
Type:
Manual transmission (optional)
📐 Dimensions
Exterior
Wheelbase:
Approximately 102 inches (2590 mm)
Length:
N/A - not specified in manual
Weights
Curb Weight:
N/A - not specified in manual
🛡️ Safety Features
Ratings
Crash Test Ratings:
N/A - agricultural tractor not rated
Active Features
Braking System:
Service and repair of the braking system, including hydraulic and mechanical aspects
Steering System:
Repair and adjustment of the steering mechanism, including power steering
Passive Features
Operator Station:
Includes service and repair information for operator's cab and controls
Rollover Protection:
N/A - manual does not specify
💡 Technology Features
Infotainment
Audio System:
N/A - not specified for this model
Driver Assistance
Electro-hydraulic Controls:
Powershift transmission with electro-hydraulic control
🔧 Maintenance
Service Intervals
Maintenance Schedule:
Refer to manual for specific recommended intervals
Fluid Specifications
Engine Oil:
Refer to manual for recommended viscosity and API service class
Transmission/Hydraulic Fluid:
Refer to manual for proper fluid type and capacity
Coolant:
Refer to manual for recommended antifreeze mixture
Known Issues / Wear Items
Injectors:
May require periodic servicing
Hydraulic Seals:
May wear and cause leaks
Electrical Wiring:
Inspect for chafing
Brake Pads:
Check for wear
📚 Vehicle History
Brand Heritage
Manufacturer:
International Harvester
Brand Heritage:
Known for durable agricultural equipment
Model Evolution
Predecessor:
International Harvester 966
Successor:
International Harvester 1086
Production Location
Assembly Plant:
N/A - not specified for this model
🏆 Awards & Recognition
Recognitions
Awards:
No specific awards are commonly associated with this model.
Era Recognition:
The 986 is part of IH's well-regarded 86 series, which is respected in the farming community.

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

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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  • Instant download PDF link on your order page and by email right after payment.
  • Secure checkout Encrypted Shopify checkout — we never see your card.
  • Print-ready PDF Searchable text, print the pages you need for the workshop.
  • Phone, tablet, PC Open it in the cab, the workshop or the office.