The International Harvester B275 Tractor, produced from approximately 1955 to 1960, represents a robust and versatile light to medium-duty agricultural machine. Known for its reliable diesel engine, standard rear PTO, and Category I or II three-point hitch, the B275 was designed for a wide range of farm tasks. Its engineering prioritizes durability and straightforward operation, making it a dependable workhorse for farmers and a sought-after model for enthusiasts. The tractor's rear-wheel-drive system, coupled with the option of a differential lock, provided essential traction for fieldwork. This comprehensive Workshop Service Manual (WSM) provides essential information for the maintenance, repair, and troubleshooting of the International Harvester B275 Tractor. It covers all major systems, including detailed procedures for engine overhaul, fuel, cooling, lubrication, ignition, transmission, PTO, drive axles, steering, braking, hydraulic, and electrical systems. The manual includes guidance on routine maintenance, component repair and rebuilds, adjustment procedures, and critical technical specifications. Its purpose is to empower owners, mechanics, and technicians with the knowledge required to keep this classic tractor in optimal working condition. 🏷️ Basic Information Identification Make: International Harvester Model: B275 Tractor Product Type: Service Manual / Workshop Manual Product Format: PDF Download 👋 Introduction Market Position Market Segment: Light to medium-duty agricultural tractor Target User: Farmers, agricultural mechanics, restoration enthusiasts Competitive Analysis Key Competitors: Massey Ferguson, Fordson, John Deere, David Brown (of similar era and power) Key Features Traction Aid: Rear-wheel drive, potential for differential lock Power Take Off: Standard rear PTO Three Point Hitch: Standard Category I or II three-point hitch 📋 Manual Details Coverage Areas Manual Type: Workshop Service Manual (WSM) Language: English Coverage Scope: Comprehensive repair and service information Page Count Page Count Estimated: 300-500 pages (typical for WSMs of this era) Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine Overhaul: Yes (detailed disassembly, assembly, troubleshooting) Fuel System: Yes (carburetor/injection, fuel pump, filters) Cooling System: Yes (radiator, thermostat, water pump, hoses) Lubrication System: Yes (oil pump, oil filter, lubrication passages) Ignition System: Yes (spark plugs, ignition timing, distributor) Transmission Manual: Yes (gearbox, clutch, linkages) Transmission Power Take Off: Yes (PTO operation, gearing, engagement) Drive Axles: Yes (differential, half-shafts, final drives) Steering System: Yes (steering box, linkages, adjustment) Braking System: Yes (drum/disc brakes, master cylinder, linkages) Hydraulic System: Yes (lift system, hydraulics for implements, pump, cylinders) Electrical System: Yes (lighting, starting, charging system, wiring diagrams) Chassis And Frame: Yes (frame inspection, repairs, mounting points) Bodywork And Fenders: Yes (sheet metal repair, mounting, adjustments) Procedures Included Routine Maintenance: Yes (oil changes, filter replacements, greasing, inspections) Troubleshooting Diagnostics: Yes (identification of common problems and diagnostic steps) Component Repair: Yes (detailed step-by-step repair instructions for all major components) Component Rebuild: Yes (engine, transmission, hydraulic pump rebuilds) Adjustment Procedures: Yes (valve lash, clutch free play, brake adjustments, timing) Torquing Specifications: Yes (critical bolt torques for engine, transmission, chassis components) Wiring Diagrams: Yes (detailed electrical schematics) Technical Depth Depth Level: Professional-level service and repair Diagnostics Capability: Advanced troubleshooting and fault finding Rebuild Instructions: Complete rebuild procedures for major assemblies 📊 Manual Specifications File Format File Type: PDF Searchable Text: Likely searchable if digitally created, but could be scanned OCR Print Quality Image Resolution: High-resolution images and diagrams expected Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Manufacturer: International Harvester (likely based on or manufactured by them) Engine Type: Diesel Engine Configuration: Vertical, inline, naturally aspirated Displacement Liters: Approximately 2.6 - 2.9 Liters (based on common IH diesel engines of the period) Cylinders: 3 or 4 cylinders (most likely 3 for B275) Performance Horsepower Rated: Approximately 35-45 PTO HP (actual rated HP varies by source and specific engine tune) Torque Peak: Estimated 100-120 lb-ft (typical for engines of this size and era) Fuel System Fuel Type: Diesel Injection System: Indirect injection (likely CAV or Simms inline injection pump) Cooling System Cooling Method: Water Cooled Lubrication Oil Type Recommendation: SAE 30 or 20W-30 Diesel Engine Oil (API CD or equivalent) Maintenance Oil Capacity Liters: Approximately 5.5 - 6.5 Liters Oil Filter Part Number: Varies by filter manufacturer (e.g., Wix 51515, Baldwin B73, IH Part No. 372008R1) 🔧 Transmission Standard Transmission Type: Manual Gear Configuration: Constant Mesh Number Of Speeds Forward: 8 Forward Speeds Number Of Speeds Reverse: 2 Reverse Speeds Optional Multi Speed Rear Axle: Some models may have had a multi-speed rear axle option for enhanced gearing. Features Clutch Type: Dry, Single Plate Gearbox Oil Type: API GL-4 Gear Oil (e.g., 80W-90 or 85W-140) Gearbox Oil Capacity Liters: Approximately 15-20 Liters (including hydraulic system) 📐 Dimensions Exterior Wheelbase Inches: Approximately 70-75 inches Overall Length Inches: Approximately 120-130 inches Overall Width Inches: Approximately 60-70 inches (track width adjustable) Weights Operating Weight Lbs: Approximately 3500 - 4000 lbs Drawbar Pull Capacity Lbs: Varies significantly based on ballast and tire configuration 💡 Technology Features Infotainment...