International Harvester Tractor 986 Workshop Service Repair Manual

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Type: Tractor

Vendor:

Sku: 98358

Tags: 986 Agriculture International Harvester Tractor Tractors

Product variants

Description

The International Harvester 986 Tractor, produced from the mid to late 1970s, represents a significant advancement in agricultural machinery. As part of the well-regarded '86 series, this tractor was engineered for robust performance and operator comfort, embodying International Harvester's legacy of innovation. Its design typically features a powerful International Harvester DT-466 Series diesel engine, known for its reliability and substantial torque output, making it well-suited for demanding farm operations. With a focus on durability and efficiency, the 986 was a key player in its era, offering a blend of power and versatility that made it a valuable asset for agricultural professionals. This comprehensive workshop service repair manual provides in-depth technical information for the International Harvester 986 Tractor and its related variants. It covers a wide array of systems, including detailed procedures for engine overhaul, transmission service, hydraulic system repair, and electrical diagnostics. The manual also addresses routine maintenance, step-by-step repair instructions, troubleshooting guides, and component replacement procedures, making it an indispensable resource for professional technicians, DIY mechanics, and tractor owners. Its extensive coverage ensures that users have the necessary knowledge to maintain, repair, and optimize their 986 Tractor for peak performance and longevity.

🏷️ Basic Information

Identification

Make:

International Harvester

Model:

986 Tractor

Product Type:

Workshop Service Repair Manual

👋 Introduction

Market Position

Target Audience:

Professional technicians, DIY mechanics, tractor owners.

Competitive Analysis

Value Proposition:

Cost savings on labor, access to professional-grade repair information, comprehensive coverage.

Key Features

Instant Access:

No shipping costs or waiting time for delivery.

Print On Demand:

Ability to print specific sections for use in potentially dirty environments.

Authoritative Source:

Written by professionals/manufacturers for dealer service departments.

📋 Manual Details

Coverage Areas

Primary Coverage:

International Harvester Tractor 986

Additional Coverage:

Related variants and configurations of the 986 series may be addressed for general maintenance and repair principles.

Page Count

Estimated Page Count:

Hundreds of pages (as indicated by product description)

Manual Type

Manual Type:

Workshop Service Manual / Repair Manual

Language

Language:

English

Format

Delivery Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine:

Detailed overhaul and repair procedures, diagnostics, component identification.

Transmission:

Service and repair for power shift, gears, clutch packs, and related components.

Hydraulics:

Lift systems, power steering, hydraulic pump, valve bodies, cylinders, and fluid maintenance.

Electrical System:

Wiring diagrams, starter, alternator, battery, lighting, instrument cluster troubleshooting.

Braking System:

Service and adjustment of brake mechanisms, hydraulic lines, and components.

Front Axle And Steering:

Repair, overhaul, and alignment procedures for the front axle and steering system.

Rear Axle And Differential:

Service and maintenance of the rear axle, differential, and final drives.

Fuel System:

Fuel tank, lines, filters, and injection pump servicing.

Cooling System:

Radiator, fan, water pump, thermostat, and coolant maintenance.

Pto System:

Power Take-Off unit service and repair.

Operator Station:

Dashboard, controls, seating, and cab component service.

Chassis And Frame:

Information related to the tractor's structural integrity and component mounting.

Procedures Included

Routine Maintenance:

Periodic maintenance charts, lubrication, filter changes, fluid checks.

Step By Step Repairs:

Detailed, sequential repair instructions for all major systems.

Troubleshooting:

Diagnostic information and fault finding for common issues.

Overhaul Procedures:

Comprehensive guide for complete engine, transmission, or hydraulic system rebuilds.

Wiring Diagrams:

Included for electrical system troubleshooting and repair.

Component Replacement:

Guidance on replacing individual components within systems, such as starters, alternators, water pumps, etc.

Technical Depth

Depth Level:

Designed for professional technicians, but provides adequate data for DIY mechanics performing repairs and maintenance.

Comprehensiveness:

Covers repairs, service schedules, maintenance, wiring diagrams, and diagnostics.

Diagnostic Procedures:

Includes methods for diagnosing common operational faults and malfunctions.

📊 Manual Specifications

File Format

File Format:

Searchability:

Likely text-searchable PDF, enhancing usability.

Print Quality

Printability:

Full Printable

Zoom Functionality:

YES (Zoom IN/OUT)

Binding Type

Binding Type:

Digital (Instant Download)

Paper Type

Paper Type:

N/A (Digital Format)

Requirements

Software Requirements:

Adobe PDF Reader & WinRAR

Compatibility:

All Versions of Windows & Mac

⚙️ Engine Specifications

Primary Engine

Engine Family:

International Harvester DT-466 Series (typically)

Engine Type:

Diesel, 4-stroke, naturally aspirated or turbocharged (depending on specific configuration)

Performance

Displacement:

Approximately 466 cubic inches (7.6 liters) for the DT-466

Horsepower Range:

Varies by specific model and configuration, typically 100-150+ HP

Torque Range:

Significant torque output for heavy-duty applications.

Fuel System

Injection System:

Mechanical fuel injection, often with distributor-type or inline injection pumps.

Fuel Type:

Diesel Fuel

Cooling System

Cooling Type:

Liquid-cooled

🔧 Transmission

Standard

Transmission Type:

Power Shift (e.g., 16-speed)

Optional

Optional Transmission:

Manual transmission options may have been available on some configurations.

Features

Gear Selection:

Offers a wide range of gears for various field operations and road speeds.

Fluid Specifications

Transmission Fluid Type:

Hy-Tran (or equivalent) or manufacturer-specified hydraulic fluid.

📐 Dimensions

Exterior

Wheelbase:

Varies, but typically around 90-100 inches.

Weights

Operating Weight:

Generally in the range of 10,000 - 12,000 lbs (unballasted).

Tow Capacity:

High towing capacity suitable for farm implements.

🛡️ Safety Features

Ratings

Safety Features:

ROPS (Roll-Over Protective Structure) typically standard or optional, seatbelts.

Active Features

Braking System:

Wet disc brakes for reliable stopping power.

💡 Technology Features

Infotainment

Instrumentation:

Basic dashboard with essential gauges for engine temperature, oil pressure, fuel level, and tachometer.

Driver Assistance

Operator Comfort Features:

Designed for operator comfort with elevated seating positions and ergonomic control placement for its era.

🔧 Maintenance

Service Intervals

Engine Oil Change:

Typically every 250-500 hours, depending on operating conditions (refer to manual for specifics).

Transmission Fluid Change:

Varies, often around 1000-2000 hours (refer to manual).

Hydraulic Fluid Change:

Typically every 1000-2000 hours (refer to manual).

Fluid Specifications

Engine Oil Type:

API CD or CE rated, SAE 15W-40 or 10W-30 (depending on ambient temperature).

Engine Oil Capacity:

Approximately 16-18 quarts (refer to manual).

Coolant Type:

Ethylene glycol based antifreeze with corrosion inhibitors, typically a 50/50 mix with water.

Known Issues

Common Wear Items:

Hydraulic pump wear, clutch pack wear in power shift, injector pump issues, electrical harness degradation.

Maintenance Tips:

Regularly check and clean air cleaner, maintain fuel system cleanliness, and ensure proper lubrication.

📚 Vehicle History

Brand Heritage

Manufacturer Legacy:

International Harvester was a major manufacturer of agricultural and industrial machinery with a long history of innovation.

Model Evolution

Series Context:

The 986 was part of the '86 series of tractors, which were a significant evolution in IH's tractor lineup, known for their comfort and power.

Production

Production Years:

Mid to late 1970s (e.g., 1976-1981)

Manufacturing Location:

United States (various IH plants)

🏆 Awards & Recognition

Recognitions

Industry Standing:

The 986 was a well-regarded tractor in its class, known for its robustness and performance in farm operations.