This comprehensive workshop service repair manual provides a wealth of information for the IH International Harvester 986 and 1086 tractors, catering to both do-it-yourselfers and experienced mechanics. It is your go-to resource for repair and service procedures, offering detailed instructions based on complete machine disassembly. Hundreds of illustrations, photos, and diagrams guide you through every step of the repair process, making it easy to understand and implement. Detailed substeps within each procedure provide in-depth information, while notes, cautions, and warnings highlight critical information. Numbered instructions ensure a clear and sequential approach to every repair, while bold figure numbers quickly connect illustrations with corresponding instructions. Enlarged insets allow you to examine parts in detail, facilitating a thorough understanding. The manual features a numbered table of contents for easy navigation, allowing you to quickly locate the information you need. It also includes dedicated sections for troubleshooting and electrical service procedures, combined with detailed wiring diagrams for efficient diagnosis and repair of electrical system issues. This manual covers a wide range of topics, including: * General information and specifications * Engine details and operation * Cooling system components and maintenance * Fuel system operation and troubleshooting * Powertrain analysis and repair * Front axle assembly and components * Clutch operation and repair * Differential lock operation and maintenance * Electrical system analysis and repair * Brake system components and maintenance * Fenders, fuel tank, and platform assembly * Final drive operation and repair * Front system components and maintenance * Front-wheel drive system operation and repair * Hydraulic system analysis and repair * Main drive bevel gears and differential assembly * Park brake operation and maintenance * Power steering system operation and repair * Power take-off operation and repair * Rear axle assembly and components * Steering gear operation and repair * Transmission system analysis and repair This manual equips you with the knowledge and guidance to keep your IH International Harvester 986 and 1086 tractors running smoothly, saving you time, money, and frustration.

The IH International Harvester 986 and 1086 tractors are iconic workhorses known for their rugged durability and reliable performance, particularly in agricultural and construction settings. These models were produced by International Harvester from the late 1960s to the early 1980s, showcasing the company's commitment to building powerful machines for demanding tasks. The 986 and 1086 were distinguished by their powerful diesel engines, which provided ample torque for pulling heavy loads and powering various implements. The tractors were also known for their robust transmissions, capable of handling a wide range of speeds and gear ratios, enabling them to adapt to diverse working conditions. Their sturdy construction, featuring a sturdy frame and robust axles, ensured long-lasting performance even in challenging environments. The 986 and 1086 were popular choices for a variety of applications, including plowing, cultivating, harvesting, and hauling heavy materials. They were equipped with a versatile hydraulic system that powered a range of implements, making them highly adaptable to various tasks. Both models offered a comfortable operator's cab, providing a safe and ergonomic workspace for extended periods. The 986 and 1086 were also known for their serviceability, thanks to their straightforward design and easily accessible components. Their popularity has endured over time, with many of these tractors remaining in service today, proving their lasting value and enduring legacy within the agricultural and construction industries.