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

Official International Harvester Shop Manual: Series A, B, C, Cub, H, M, MTA, 4, 6, W6TA & 9 Wheel Type Tractors (1939-1968)

Maintain, repair, and restore your vintage International Harvester equipment with the ultimate technical authority. This comprehensive Shop Manual is the definitive resource for owners of IH wheel-type tractors produced between 1939 and 1968. Whether you are performing routine maintenance on a Farmall Cub or executing a full engine overhaul on a Super WD9, this manual provides the professional-grade specifications and step-by-step procedures required to get the job done right.

Spanning decades of IHC engineering, this manual covers a massive range of configurations including Orchard (O), Orchard Special (OS), Standard (W), and High-Clearance (V) versions. It is specifically designed to provide high-value technical data for both gas and diesel variants, ensuring your classic machine stays in peak operating condition.

Models Covered in Detail:

• Series A & B: Includes the iconic Super A (Serial No. 250001 and up), AV, Super AV, and the versatile B and BN models.
• Series C: Comprehensive data for the Model C and the enhanced Super C.
• The Cub Line: Complete coverage for the Farmall Cub and the Cub Lo-Boy (up to 1968).
• Series H & M: Detailed procedures for the H, HV, Super H, and Super HV. Includes the M, MV, MD (Diesel), MDV, and the legendary Super M, MD, and Super MTA (Torque Amplifier models).
• Series 4 & 6: Covers industrial and wheatland favorites including the O4, OS4, W4, Super W4, O6, OS6, W6, Super W6, and the W6TA (Torque Amplifier).
• Series 9: High-power coverage for the W9, WR9, WD9, WDR9, and the heavy-duty Super WD9 and Super WDR9.

Professional Technical Content:

• Engine Service: Complete teardown and rebuild specs for gas and diesel engines. Includes critical data for the MD and WD9 diesel starting systems.
• Torque Amplifier (TA) & Transmission: Specialized sections on the W6TA and Super MTA Torque Amplifier units, including removal, overhaul, and adjustment procedures.
• Hydraulic Touch-Control: In-depth troubleshooting and repair for the IH Touch-Control systems found on Cub, Super A, and Super C models.
• Clutch & Braking Systems: Step-by-step "Tractor Split" instructions for clutch replacement (10-inch, 11-inch, and 12-inch versions) and brake band adjustments.
• Electrical & Governor: Specific timing marks, governor linkages, and wiring harness routing to ensure factory-spec performance.
• Serial Number Identification: Use the included "Table A" to identify your specific tractor's production year and version based on the chassis serial number.

Why This Manual is Essential:

This manual is optimized for mobile readability and shop-floor use. By following these factory-standard procedures, you prevent costly mistakes and ensure the longevity of your investment. From the smallest Cub pilot bushing to the massive WD9 final drive, every component is addressed with the clarity that professional mechanics demand.

Stop guessing at torque values or fluid capacities. Equip your workshop with the official technical specifications for the entire International Harvester wheel tractor fleet and keep your heritage iron working for generations to come.