1 1

International Harvester

International Harvester Tractor 986 M Service Repair Workshop Manual

International Harvester Tractor 986 M Service Repair Workshop Manual

$0.00
$0.00
Sale Sold out
Shipping calculated at checkout.
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
Model Variant:
986 (86 Series)
Production Years:
1976-1981 (approx.)
👋 Introduction
Market Position
Target Audience:
Owners, mechanics, and technicians of the International Harvester 986 tractor
Competitive Analysis
Value Proposition:
Provides all technical data and procedures needed for self-service, saving on dealer costs.
Key Features
Coverage:
Comprehensive service, repair, troubleshooting, and maintenance procedures.
Usability:
Structured layout with table of contents for easy navigation.
Troubleshooting Focus:
Includes dedicated guides for common issues.
Format:
Digital PDF for instant access on any device.
📋 Manual Details
Coverage Areas
Coverage Description:
Comprehensive service, repair, troubleshooting, and maintenance for the International Harvester Tractor 986.
Page Count
Estimated Pages:
N/A - not specified but described as comprehensive.
Manual Type
Type:
Factory Service Repair Manual / Workshop Manual / Troubleshooting Manual
Language & Format
Language:
English
Format:
PDF
Delivery Method:
Instant digital download
📖 Manual Coverage
Systems Covered
Engine:
Detailed service and repair procedures.
Transmission:
Service and repair of transmission systems.
Hydraulic System:
Coverage for hydraulic pumps, valves, cylinders, and fluid maintenance.
Electrical System:
Includes wiring diagrams and component testing.
Braking System:
Service and repair instructions.
Cooling System:
Maintenance and repair procedures.
Fuel System:
Service and troubleshooting.
Steering System:
Service and repair.
Operator Station:
Covers controls, comfort features, and cab components.
Drivetrain:
Includes differential and final drives.
Power Take-Off (PTO):
Covers PTO clutch and drive mechanisms.
Procedures Included
Routine Maintenance:
Includes schedules and fluid specifications.
Troubleshooting:
Dedicated troubleshooting guides.
Component Disassembly/Reassembly:
Detailed step-by-step instructions.
Diagnostic Procedures:
For identifying and resolving issues.
Wiring Diagrams:
For electrical system diagnosis and repair.
Engine Overhaul:
Detailed procedures for engine rebuilds.
Transmission Repair:
Covers component replacement and adjustment within the transmission and torque amplifier.
Hydraulic System Service:
Includes testing, component replacement, and fluid maintenance.
Electrical Diagnostics:
With wiring diagrams and fault finding charts.
Front Axle and Steering Service:
Repair and maintenance procedures.
Rear Axle and Differential Service:
Including disassembly and reassembly.
Power Take-Off Service:
Covers PTO clutch and drive mechanisms.
Front End Loader Service:
Potential coverage; check manual details.
Technical Depth
Depth:
Comprehensive, covering from routine maintenance to in-depth repairs and overhauls.
Accuracy:
Factory-level specifications, tolerances, and procedures.
Diagrams:
Likely includes detailed exploded views, schematics, and troubleshooting flowcharts.
Special Tools:
Lists any special tools required for specific repairs.
Parts Information
Part Numbers:
Includes OEM part numbers for components such as filters, gaskets, and seals.
📊 Manual Specifications
File Format
File Type:
PDF
Compatibility:
Windows, Mac, and mobile devices.
Software Requirements:
Adobe PDF Reader and possibly an unzip tool if archive is compressed.
Searchability:
Digital text searchable if not scanned; else searchable after OCR.
Print Quality
Quality:
Digital reproduction; quality depends on original source.
Binding Type
Binding:
Digital PDF
Paper Type
Paper Type:
N/A - digital format
⚙️ Engine Specifications
Primary Engine
Engine Model:
D-358 Diesel
Engine Type:
Direct Injection, Naturally Aspirated, 4-Cycle Diesel
Displacement:
358 cu in (5.87 L)
Bore and Stroke:
4.25 in x 4.31 in (108 mm x 110 mm)
Compression Ratio:
16.0:1 (typical)
Performance
Horsepower Rated:
Approx. 96 PTO HP (subject to configuration)
Peak Torque:
Approx. 265 lb-ft @ 1300 RPM (subject to configuration)
Fuel System
Fuel Type:
Diesel
Injection System:
Roosa Master or Bosch inline injection pump (model dependent)
Fuel Filter:
Refer to manual for specific part number, e.g., WIX 33490 (example)
🔧 Transmission
Standard Transmission
Type:
David Brown 12-Speed Synchromesh with Torque Amplifier
Speeds:
12 forward, 4 reverse (with TA engaged provides 16 forward speeds and 8 reverse approx.)
Optional Transmission
N/A:
N/A - no known optional transmission offered for this model.
Features
Torque Amplifier:
Yes, provides extra gear ratios for power and speed flexibility.
📐 Dimensions
Exterior
Wheelbase:
Approx. 95.5 in (2426 mm)
Length:
Approx. 162 in (4115 mm) (with standard 3-point hitch)
Weights
Curb Weight:
Approx. 11,830 lb (5366 kg) (shipping weight, varies with equipment)
🛡️ Safety Features
Ratings / Crash Test Information
Crash Test:
N/A - tractors are not crash tested.
Active Features
Lighting:
Standard work lights and turn signals.
Safety Start System:
Prevents engine start in gear.
Passive Features
Rollover Protection (ROPS):
Available as dealer-installed option; not standard from factory.
Brakes:
Dual hydrostatic brakes provide reliable stopping.
💡 Technology Features
Infotainment
Audio System:
N/A - not equipped with audio system.
Driver Assistance
Instrumentation:
Analog gauges for engine speed, oil pressure, temperature, and fuel level.
Tractor Management:
No digital display; manual monitoring.
🔧 Maintenance
Service Intervals
Engine Oil:
Every 100 hours or annually (severe duty may require more frequent changes).
Hydraulic Oil:
Every 1000 hours or annually.
Transmission Oil:
Every 1000 hours or annually.
Coolant:
Every 1000 hours or 2 years.
Air Filter:
Inspect every 50 hours; replace as needed.
Fuel Filter:
Replace every 200 hours or annually.
Fluid Specifications
Engine Oil:
API CC/SD or higher; SAE 15W-40 (ambient temperature dependent)
Hydraulic Oil:
International Harvester Hy-Tran or equivalent.
Transmission Oil:
International Harvester Hy-Tran or equivalent.
Coolant:
Ethylene glycol-based with corrosion inhibitors.
Known Issues / Common Wear Items
Engine:
Injector pump timing, head gasket failure, crankshaft seal leaks.
Transmission:
Torque amplifier clutch pack wear, synchronizer issues.
Hydraulics:
O-ring failure in lift cylinder, pump wear.
Electrical:
Wiring insulation degradation, alternator diode failures.
Brakes:
Brake disc wear.
📚 Vehicle History
Brand Heritage
Manufacturer:
International Harvester Company (IHC).
Model Evolution
Series:
Part of the 86 Series Agricultural Tractors (1976-1981).
Predecessor:
International 966 (966 was prior model; the 986 introduced in 1976).
Successor:
International 1086 (not direct successor, but larger in lineup).
Production Location
Factory:
Farmall Works factory in Rock Island, Illinois, USA.
🏆 Awards & Recognition
Recognitions
Model Recognition:
The IH 986 was praised for its reliability, operator comfort, and advanced transmission, earning a strong following among farmers.
Era Recognition:
The 86 series is considered one of IH's most successful tractor lines.

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.

View full details
  • 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.