1939-1968 International Harvester Series A, B, C, Cub, H, M, MTA, 4, 6, W6TA & 9 Wheel Type Tractors Shop Manual - Complete Repair & Maintenance Procedures

International Harvester Tractor Service Manual: 1939–1968

• Covers 1939–1968 International Harvester wheel-type tractors, including Series A, B, C, Cub, H, M, 4, 6, and 9, documenting critical maintenance for gasoline, distillate, and diesel engine variants
• Original OEM publication, referenced for technical specifications and system-wide service intervals
• Contains 432 technical illustrations, exploded-view diagrams, torque-specification tables, and electrical system schematics for complex engine and drivetrain assemblies
• No shipping wait — the PDF is available immediately after purchase
• Indexed PDF search covers every chapter and appendix
• This complete 88-page manual documents the full spectrum of the Farmall and International Harvester series, including advanced options like the torque amplifier and independent power take-off units

Engine, Transmission, and Drivetrain Documentation

This factory manual provides an expert overview of the mechanical systems that define these vintage International Harvester tractors. The documentation begins with engine overhaul procedures, covering cylinder head service, piston and sleeve specifications, and camshaft maintenance for both gasoline and diesel engines. Detailed chapters provide data on engine removal, clutch assembly service, and final drive maintenance. The technical prose explores the intricacies of steering gear, axle assemblies, and the complex hydraulic Lift-All and Touch-Control systems, detailing service requirements for pumps, control valves, and cylinders.

Specification Highlights

Technical depth is provided through comprehensive tables documenting cylinder head bolt torque, valve tappet clearances, and crankshaft journal dimensions across all covered engine models. Engine low idle speeds are documented at 425–525 rpm depending on the series. Crankshaft end play is specified as 4–8 thousandths for most models in the provided service data. Intake valve seat angles are listed at 45° across the board, with tappet gaps clearly defined for hot or cold settings. Fluid capacities for transmissions, differentials, and cooling systems are itemized for quick reference during routine maintenance. How factory workshop documentation is structured is essential for owners performing precision service on this vintage equipment.

Reference only — always consult a certified technician before performing service on this equipment. An official 88-page International Harvester OEM workshop manual covering the 1939–1968 Series A, B, C, Cub, H, M, MTA, 4, 6, W6TA, and 9, documenting engine, chassis, electrical, and hydraulic specifications for the entire wheel-type tractor lineup.

Document Reference: Original OEM manufacturer publication