🏷️ Basic Information Identification Make: International Harvester Model: 248, 258, 278, Hydro 268 Tractor Codes Product Name: International Harvester 248 258 278 Hydro 268 Tractor Complete Workshop Service Repair Manual PDF Download 👋 Introduction Market Position Target User: Tractor owners, mechanics, service technicians, and DIY enthusiasts. Key Features Cost Savings: Enables users to perform their own repairs, saving significant money on labor costs. Usability: Easy-to-follow step-by-step instructions with clear illustrations. Accessibility: Instant download and accessible on multiple devices. Competitive Analysis Competitors: This manual is comparable to factory service manuals for tractors from John Deere, Massey Ferguson, Ford, and Allis-Chalmers of the same era. 📋 Manual Details Coverage Areas Overall Coverage: Complete Workshop Service and Repair Procedures, A-Z Model Variant Coverage: All Models, Engines, Trim, and Transmission Types Covered Specific Procedures: Includes procedures for clutch replacement, brake caliper/drum servicing, hydraulic pump testing, and PTO clutch adjustment. Wiring Diagrams: Comprehensive electrical wiring diagrams for various configurations. Page Count Estimated Pages: Hundreds (specific number not provided, but described as 'complete' and covering 'every' procedure) Manual Type Type: Workshop Service Repair Manual Manual Purpose: Designed for comprehensive repair and maintenance, enabling users to perform tasks ranging from routine servicing to major overhauls. Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, diagnostics, repair, and component breakdown (e.g., fuel system, cooling system, lubrication system, ignition/starting system). Transmission: Repair and servicing of all transmission types, including hydrostatic systems (Hydro 268) and related components. Hydraulics: Hydraulic system diagnostics, repair, maintenance of pumps, valves, cylinders, and related components. Electrical: Wiring diagrams, troubleshooting, repair of electrical components, charging system, starting system, lighting, and accessories. Drivetrain: Front and rear axle repair, differential, PTO (Power Take-Off) systems, and drive shafts. Steering: Power steering system repair, troubleshooting, and maintenance. Brakes: Brake system diagnosis, repair, and maintenance for all brake types. Chassis And Body: Frame, suspension, drawbar, ballast, and minor bodywork repairs. Air Conditioning: If factory-equipped, AC system service and repair would be included. Steering Column: Repair and adjustment of steering column and linkage. Procedures Included Maintenance: Scheduled maintenance, fluid changes, lubrication, filter replacements, general inspections. Troubleshooting: Detailed diagnostic procedures and fault finding for all systems. Repair: Step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation. Overhaul: Complete overhaul procedures for engines, transmissions, and hydraulic systems. Adjustments: Calibration and adjustment procedures for engine timing, PTO engagement, hydraulic pressures, etc. Wheel Alignment: Procedures for checking and adjusting front-end alignment. Technical Depth Diagnostic Capability: Advanced diagnostics, including specific fault codes (if applicable to the era) and systematic troubleshooting trees. Rebuild Capability: Full rebuild procedures for major components like engines and transmissions. Technical Illustrations: Includes pictures/illustrations for easy-to-follow step-by-step instructions. Torque Specifications: Detailed torque specifications for all critical fasteners across all systems. Tolerance Specifications: Precision tolerances for engine and transmission component assembly. Diagnostic Charts: Troubleshooting charts and flow diagrams for systematic fault diagnosis. 📊 Manual Specifications File Format Format: PDF Compatibility: All PC & MAC Computers, Tablets, Mobile Phones Required Software: Adobe Reader (free download) Print Quality Printability: Printable (single page, chapter, or entire document) Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Family: International Harvester DT-360 (likely for 258/278, smaller variants for 248). Displacement: Approx. 360 cubic inches (5.9L) for DT-360; smaller displacements for other models (specifics to be found within the manual). Performance Horsepower Range: Varies by model and engine, typically in the 50-80 HP range for these tractors. Torque: Specific torque figures would be detailed in the manual for various engine variants. Fuel System Injection Type: Direct injection, likely with Bosch or similar rotary/inline injection pumps. Fuel Type: Diesel Cooling System Cooling Method: Liquid-cooled Lubrication System Oil Type: Specific SAE viscosity grade and API service classification for diesel engines (e.g., SAE 15W-40 API CG-4 or higher) would be detailed in the manual. 🔧 Transmission Standard Gearbox Type: Various options including 8-speed or 16-speed synchromesh transmissions. Optional Hydrostatic: Hydrostatic transmission variant available, specifically for the Hydro 268 model. Features Power Take Off: Standard PTO (540/1000 RPM) functionality and repair procedures. Clutch Type: Dual-clutch (for independent PTO) or single-stage clutch depending on configuration. 📐 Dimensions Exterior Wheelbase: Varies by model, typical for this class of tractor (details in manual). Length: Varies by model, typical for this class of tractor (details in manual). Weights Operating Weight: Typically in the range of 5,000 - 7,000 lbs (details in manual). 💡 Technology Features Infotainment Infotainment System: N/A (Basic agricultural tractor technology of its era). Driver Assistance Driver Assistance Features: N/A (Focus is on mechanical functionality and power). Connectivity Connectivity Options: N/A 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 100-250 operating hours, or annually (specific recommendation in manual). Air Filter Service: Check and service based on operating conditions, usually every 50-100 hours. Fuel Filter Replacement: Recommended annually...