1939-1952 Farmall A/B/AV/BN International A U-2 Service Manual (64 P.)

1939–1952 Farmall A, B, AV, BN and International A Technical Manual

• Original OEM publication (Form CHS-27) from International Harvester, documenting factory-specified tolerances and clearances for the 113 cu in 4-cylinder engine
• Contains 80 technical illustrations, including exact exploded views of the engine, transmission, and differential assemblies
• Available as an instant download immediately after checkout
• Print only the pages you need for the shop floor—no more ruined or greasy reference books
• Fully searchable, indexed PDF format allowing you to jump straight to specific chapters and appendices

Documented Systems and Assembly Data

This 64-page service manual breaks down critical tractor systems with exact engineering data. Inside, you will find comprehensive documentation on internal engine components. This includes specifications for wet-type cylinder sleeves, connecting rods, and the exact clearances for crankshaft Tocco-hardened bearing surfaces.

Fuel system sections detail both Zenith and Marvel Schebler carburetors. You get the factory numbers for float level settings and main jet calibration for gasoline and distillate setups. Need to trace a short? The electrical section includes straightforward wiring diagrams for the starter and Delco-Remy lighting systems.

Engine and Chassis Specification Preview

Beyond the engine block, this guide outlines transmission and differential overhaul parameters, specifically documenting the selective sliding gear four-speed arrangements. You also get critical fast-reference data directly from the factory. The manual lists a cylinder head bolt torque of 65 ft-lb, a transmission case capacity of 1-1/2 gallons, and a 3-3/8 gallon cooling system limit.

Caution: Heavy machinery maintenance carries inherent risks. Always verify procedures and consult a certified heavy equipment mechanic before beginning any teardown or overhaul.