Crawler Tractors International IH Farmall AV B BN Tractor Service Repair Workshop Manual PDF

This is the COMPLETE Service and Repair Manual for the Crawler Tractors International IH Farmall AV B BN Tractor Service Repair Workshop Manual PDF. It covers every single detail.

International Harvester Farmall A AV B BN Tractor Service Repair Workshop Manual PDF VEHICLE/EQUIPMENT INTRODUCTION: The International Harvester Farmall A, AV, B, and BN tractors, produced between 1939 and 1948, are iconic row-crop tractors that defined an era of American agriculture. The Farmall A was introduced in 1939 as a smaller alternative to the Farmall H, powered by the International C-113 engine producing approximately 15-16 drawbar horsepower on regular fuel. The AV variant runs on vaporized gasoline (propane/kerosene), while the B is essentially the same tractor with a different hood and grille design, and the BN is the narrow-row version. These tractors feature a distinctive tricycle front wheel configuration with adjustable rear tread width, making them ideal for cultivating row crops such as corn and cotton. With over 128,000 Farmall A and AV units produced at the Tractor Works in Chicago, these machines are among the most collectible vintage tractors today. Their simple 4-speed sliding gear transmission, magneto ignition system, and robust C-113 engine make them relatively easy to maintain, though original parts knowledge is invaluable. SERVICE & REPAIR SCOPE: - Engine C-113: cylinder head decarbonizing, valve grinding, piston ring replacement - Magneto ignition: magneto disassembly, points and condenser service, timing adjustment - Carburetor: Zenith or updraft carburetor rebuild, fuel mixture adjustment - Ignition system: spark plug wire routing, distributor cap inspection - 4-speed sliding gear transmission: gear tooth inspection, bearing replacement - Cooling system: thermosiphon cooling maintenance, water pump (if equipped) service - Braking system: single brake adjustment, brake band replacement - Hydraulics: Farmall touch-control hydraulic system service (if equipped) - Front axle: tricycle wheel fork inspection, kingpin bushing replacement - Rear axle: differential gear setup, final drive inspection TECHNICAL SPECIFICATIONS: - Engine: International C-113, 113 cu in (1.85L), 4-cylinder, naturally aspirated - Fuel type: Gasoline/distillate (A/B), vaporized fuel (AV/BN) - Power: approximately 15-16 drawbar HP, 20 belt HP - Engine speed: 1400 RPM governed - Bore x Stroke: 3.0 x 4.0 inches - Transmission: 4-speed sliding gear, 1 reverse - Drive: 2-WD only - Front tire: 4.00-15 4-ply, Rear tire: 9-24 4-ply - Weight: approximately 1780 lb (808 kg) - Wheelbase: 71 inches DIAGNOSTIC INFORMATION: - Magneto timing: alignment of timing marks, impulse coupler function check - Compression testing: acceptable ring seal condition for vintage engine - Carburetor float level: fuel level at nozzle orifice, needle and seat inspection - Engine overheating: thermosiphon system flow check, radiator tube inspection for blockage - Transmission slipping: gear engagement depth check, shift fork wear assessment - Magneto failure: condenser breakdown testing, breaker point gap verification (typically 0.015 inch) - Oil pressure: visual drip-feed system

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