The International Harvester (IH) 786 and 886 tractors represent a lineage of robust agricultural machinery, produced during the late 1970s and early 1980s. These tractors, powered by reliable diesel engines such as the International Harvester DT-402, were engineered for demanding farm work, offering substantial horsepower and torque. Key features often included a 16-speed transmission with a Torque Amplifier (TA) system, providing a wide range of gears for optimal performance in various field conditions. Their solid construction and focus on functional power transfer underscore International Harvester's heritage as a significant American manufacturer of agricultural equipment, known for dependability in the field.
This comprehensive service repair manual provides essential information for the maintenance and repair of IH 786 and 886 tractors. It covers a wide array of systems, including the engine, diesel fuel system, cooling system, clutch, torque amplifier, transmissions, brakes, hydraulic system, power steering, PTO, electrical system, cab, and front systems. The manual includes detailed procedures for standard maintenance, scheduled servicing, and complete disassembly and repair, supported by hundreds of photos and illustrations. Its purpose is to assist both do-it-yourself owners and experienced mechanics in keeping these tractors in optimal working condition, ensuring longevity and performance through accurate guidance and technical specifications.
Make:
International Harvester (IH)
Product Type:
Service Repair Manual PDF
Manual Identifier:
IH-786-886-SRM-PDF
Positioning:
Essential resource for owners and technicians of IH 786/886 tractors
Cost Savings:
Inexpensive way to keep vehicle working properly, saves money on mechanic labor
Convenience:
Digital format is less expensive and more convenient than old paper manuals
Accessibility:
Easy to use, accessible on multiple devices
Primary Coverage:
IH International Harvester 786 and 886 Tractors
Estimated Page Count:
Hundreds of pages
Type:
Official Full Factory Service Repair Workshop Manual
Format:
PDF (Digital Download)
Compatibility:
All Versions of Windows and Mac, Smartphones, Tablets (via Web Browser)
Accessibility:
Web browser access on any computer or mobile device
Print Option:
Printable (entire manual or specific pages)
Licensing:
No extra fees, No expiry dates
Power Steering System:
Yes
Multiple Control Valve:
Yes
Maintenance:
Yes (standard maintenance, scheduled servicing)
Repair:
Yes (step-by-step instructions based on complete disassembly)
Troubleshooting:
Yes (implied by comprehensive repair information)
Depth:
Complete factory level service and repair
Photos Illustrations:
Hundreds of photos and illustrations
Audience:
Do-it-yourselfers and experienced mechanics
Reader Requirement:
Adobe PDF Reader (free)
Compression Requirement:
Winzip (free, for download)
Print Resolution:
High quality (suitable for printing)
Binding Type:
N/A (Digital PDF)
Paper Type:
N/A (Digital PDF, user prints on desired paper)
Engine Family:
International Harvester DT-402 Diesel (typical for 786/886)
Engine Displacement:
Approximately 402 cubic inches (6.6 L)
Horsepower Range:
Varies by specific model and configuration, typically 70-90 HP range
Torque Range:
Varies by specific model and configuration, significant torque for farm work
Fuel System Type:
Direct Injection Diesel
Turbocharger:
Yes, often equipped with a turbocharger
Transmission Type:
Typically a 16-speed transmission with Torque Amplifier (TA)
Optional Transmission:
Other configurations may exist, but TA is a key feature
Torque Amplifier:
Provides 16 forward and 8 reverse speeds by splitting gears
Wheelbase:
Varies by configuration (2WD/4WD, tires)
Operating Weight:
Typically around 8,000 - 10,000 lbs (3600 - 4500 kg)
Drawbar Horsepower:
Designed for substantial fieldwork, indicating significant power transfer
Safety Standards:
Designed to meet agricultural safety standards of its era
Braking System:
Hydraulically activated wet disc brakes for reliable stopping power
Infotainment Features:
N/A (Focus on functional agricultural operation, not modern infotainment)
Driver Assistance:
N/A (Basic tractor controls, no electronic driver aids)
Engine Oil Change:
Typically every 250 hours of operation or annually, consult manual for specific OEM recommendation.
Fuel Filter Replacement:
Recommended at regular intervals, often with oil changes or as needed based on fuel quality.
Hydraulic Fluid Change:
Typically every 1000 hours or 2 years, dependent on usage and fluid condition.
Engine Oil Type:
API CD or CE rated diesel engine oil (e.g., 15W-40)
Hydraulic Transmission Fluid:
IH Hy-Trans Fluid or equivalent (refer to manual for exact specification).
Coolant Type:
Ethylene glycol-based antifreeze with corrosion inhibitors (e.g., 50/50 mix).
Torque Amplifier Slippage:
Can occur with wear; manual details inspection and adjustment procedures.
Hydraulic System Leaks:
Common with age; manual covers seal replacement and system diagnostics.
Electrical Connections:
Corrosion or loose connections can cause intermittent issues; manual provides wiring diagrams.
Heritage:
International Harvester: a storied American manufacturer of agricultural and industrial equipment.
Era:
Produced in the late 1970s and early 1980s, part of IH's established tractor lines.
Manufacturing Location:
Typically manufactured in North America (e.g., USA)
Industry Recognition:
IH tractors of this era were known for their robustness and dependability in agricultural applications.
