Target Audience:
Do-it-yourself owners and experienced mechanics seeking comprehensive repair and service information.
Cost Effectiveness:
An inexpensive way to keep the tractor working properly by enabling self-service and repair.
Completeness:
Complete official full factory service repair manual with no extra fees or expiry dates.
Digital Advantage:
Digital format offers superior convenience and cost savings compared to traditional paper manuals.
Market Niche:
The 986 was a popular medium-duty row-crop tractor, competing with models from John Deere, Massey Ferguson, and Ford.
Systems Covered:
Engine, Fuel System, Cooling System, Electrical System, Transmission, Brakes, Hydraulics, Power Steering, PTO, Final Drive, Cab, Front System, Differential, Torque Amplifier, Multiple Control Valve, Turbocharger
All Styles Covered:
Indicates that all variations and configurations of the IH International Harvester 986 tractor are covered within the manual.
Approximate Pages:
Hundreds
Type:
Service Repair Workshop Manual
Vin Decoding:
While not explicitly stated as a VIN decoder, factory service manuals often contain information to help identify specific configurations.
Engine:
Complete service and repair procedures for the IH 986 tractor engine.
Diesel Fuel System:
Detailed diagnostics, adjustments, and repair for the diesel fuel injection system.
Diesel Turbocharger:
Information on turbocharger installation, testing, and repair.
Cooling System:
Maintenance, troubleshooting, and repair of the cooling system, including radiator, water pump, and thermostat.
Electrical System:
Comprehensive coverage of the tractor's electrical system, including wiring diagrams, component testing, and troubleshooting.
Transmission:
Covers range transmission, speed transmission, and torque amplifier service and repair.
Brakes:
Detailed procedures for brake system maintenance, adjustment, and repair, including transmission brake.
Hydraulic System:
In-depth information on the hydraulic system, including pump, cylinders, valves, and maintenance.
Power Steering System:
Service and repair of the power steering unit and associated components.
Power Take Off Pto:
Information on PTO engagement, maintenance, and repair.
Differential:
Repair and overhaul procedures for the differential unit.
Final Drive:
Service and repair of the final drive assemblies.
Front System:
Maintenance and repair of the front axle and steering components.
Cab:
Procedures for cab maintenance and repair, potentially including climate control and operator comfort features.
Multiple Control Valve:
Service and repair of the multi-control valve for hydraulic functions.
Service Data:
Includes essential service data, such as fluid capacities, lubrication points, and general specifications.
Maintenance:
Step-by-step instructions for routine maintenance tasks.
Troubleshooting:
Diagnostic procedures to identify and resolve common issues.
Repair:
Detailed instructions for all major repair procedures.
Disassembly Reassembly:
Complete step-by-step disassembly and reassembly of all major components and systems.
Adjustments:
Procedures for adjusting various components for optimal performance.
Torque Specifications:
Provides critical torque specifications for fasteners across all systems, essential for proper assembly.
Depth:
Comprehensive, factory-level detail suitable for both DIY and experienced mechanics.
Diagnostics:
Includes diagnostic procedures for identifying mechanical and electrical faults.
Rebuild Procedures:
Detailed instructions for complete rebuilds of major components like the engine, transmission, and hydraulic systems.
Visual Aids:
Hundreds of photos and illustrations guiding through service and repair procedures.
Digital Type:
PDF (requires Adobe PDF Reader)
Printability:
Fully printable, allowing users to print entire manual or specific pages.
Physical Format Equivalent:
Not applicable (digital format), but designed to replace traditional bound manuals.
Durability Advantage:
Digital format offers superior durability and cleanliness compared to paper manuals in workshop environments.
Operating Systems:
Compatible with all versions of Windows and Mac.
Device Compatibility:
Accessible on desktop PCs, laptops, smartphones, and tablets via web browser or PDF reader.
Engine Model:
Likely a D-series International Harvester diesel engine (e.g., D-239, DT-239 or similar variants based on tractor era and horsepower).
Cylinders:
Typically a 4-cylinder or 6-cylinder diesel engine.
Injection Type:
Direct injection, likely with a Roosa Master or similar rotary injection pump, and optional turbocharging.
Horsepower Range:
Typically in the 80-100 PTO horsepower range, depending on specific engine configuration and era.
System Type:
Liquid-cooled, pressurized system.
Dashboard Features:
Basic dashboard instrumentation including tachometer, temperature gauge, oil pressure gauge, and fuel gauge. Typically no advanced infotainment systems.
Operator Comfort:
Focus on operator ergonomics and comfort within the cab, though advanced driver-assistance systems are absent.
Data Logging:
No electronic data logging or connectivity features typical of modern equipment.
Engine Oil Change:
Typically every 250 hours, depending on operating conditions. Consult manual for specific diesel engine type.
Transmission Hydraulic Fluid:
Typically every 1000 hours for fluid and filter change. Verify with manual.
Engine Oil:
API CD or CE rated diesel engine oil, SAE 15W-40 or 10W-30 recommended based on ambient temperature. Consult manual for exact viscosity.
Transmission Hydraulic Fluid:
IH Hy-Tran fluid or equivalent (e.g., UTF - Universal Tractor Transmission Fluid). Capacity varies, approximately 10-15 gallons for the transmission and hydraulic system.
Coolant:
Ethylene glycol based antifreeze mixture, typically a 50/50 mix with distilled water.
Torque Amplifier:
Torque Amplifier (TA) clutch wear or malfunction is a common issue requiring specialized repair.
Hydraulic Pump:
Wear or leaks in the hydraulic pump can lead to loss of hydraulic power for implements and steering.
Electrical Connections:
Corrosion or loose connections in the electrical system can cause intermittent issues.
Fuel Injection Pump:
Wear or calibration issues with the diesel injection pump can affect engine performance and starting.
Manufacturer:
International Harvester (IH), a prominent American manufacturer of agricultural and construction equipment.
Production Era:
The 986 tractor was part of IH's highly successful '86 series, produced from the mid-1970s into the early 1980s.
Manufacturing Location:
Primarily manufactured at International Harvester's Doncaster, UK, and Louisville, Kentucky, USA plants.
