🏷️ Basic Information Identification Make: International Harvester Model: 21456 Tractor Model Designation: 21456 Product Type: Service Repair Manual 👋 Introduction Market Position Category: Agricultural Tractor Target User: Tractor owners, farm mechanics, agricultural repair shops Competitive Analysis Value Proposition: Provides essential information for maintaining and repairing the IH 21456 Tractor, enabling cost savings and extending operational life. Key Features Information Source: Official or semi-official documentation from International Harvester or authorized sources. Format Benefit: PDF format offers portability, searchability, and easy access across various devices. 📋 Manual Details Coverage Areas Primary Coverage: Maintenance, Troubleshooting, Repair, Overhaul of IH International Harvester 21456 Tractor Secondary Coverage: Electrical Systems, Hydraulics, Powertrain, Chassis, Operator Station Page Count Estimated Pages: Varies (PDF format can dynamically adjust, but representative of a comprehensive print manual) Manual Type Type: Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed overhaul, diagnostics, fuel system, cooling system, lubrication system, starting and charging systems, emission controls (if applicable) Transmission: All manual and power shift transmissions, clutch, PTO, differentials, final drives; diagnostic and repair procedures Hydraulics: Hydraulic pump, cylinders, valves, control systems, auxiliary hydraulics, fluid specifications, troubleshooting Electrical: Wiring diagrams, component testing, starter, alternator, battery, lighting systems, diagnostic procedures Chassis And Steering: Front axle, rear axle, brakes (service and parking), steering system, hitch system, wheel specifications Operator Station: Cab systems, HVAC (if equipped), controls, seat, safety features Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication points, fluid level checks, safety inspections Troubleshooting: Diagnostic flowcharts, symptom-based troubleshooting guides, common problem identification Repair And Overhaul: Step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation Adjustments And Calibration: Valve adjustments, clutch adjustments, brake adjustments, hydraulic system calibration Technical Depth Depth: Comprehensive, covering from basic daily checks to complete engine and transmission rebuilds Detail Level: Includes torque specifications, clearance measurements, timing procedures, and diagnostic trouble codes (DTCs) 📊 Manual Specifications File Format Format: PDF (Portable Document Format) Searchability: Likely text-searchable, allowing for quick lookup of keywords and components Print Quality Printability: Designed for clear printing of text and diagrams Diagram Clarity: High-resolution diagrams and illustrations suitable for repair guidance Binding Type Binding: N/A (Digital PDF format) Paper Type Paper: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Family: Likely based on common IH diesel engine families of the era (e.g., D-series, DT-series, or similar). Fuel Type: Diesel Performance Displacement: Specific displacement not provided, but typical for IH tractors of this class would range from 4.0L to 7.0L+ depending on configuration. Horsepower Range: Specific HP not provided, but typically in the 60-120 HP range for tractors of this era and model number designation. Torque Range: Specific torque not provided, but expected to be robust for agricultural applications. Fuel System Injection Type: Likely direct injection, possibly with rotary or inline fuel injection pumps. Fuel Filter Specifications: Manual will specify OEM part numbers and recommended replacement intervals. Cooling System Coolant Type: Manual will specify required coolant mixture (e.g., 50/50 ethylene glycol and water) and potential specifications for heavy-duty coolants. Lubrication System Engine Oil Specification: Manual will specify viscosity grade (e.g., SAE 15W-40, SAE 30) and API service classification (e.g., CD, CE, or higher). Oil Capacity: Manual will provide exact oil capacity with and without filter change. Oil Filter Part Number: Manual will list OEM and possibly cross-reference part numbers for the engine oil filter. 🔧 Transmission Standard Transmission Type: Likely a robust manual transmission (e.g., 8-speed, 12-speed, or 16-speed range transmission) or potentially a power shift option. Optional Power Take Off Pto: Standard PTO specifications (e.g., 540/1000 RPM) and maintenance procedures. Features Transmission Fluid Specification: Manual will specify the correct type of transmission lubricant (e.g., IH Hy-Trans, UTF, or specific gear oil) and its API classification/viscosity. Transmission Fluid Capacity: Manual will provide the precise fluid capacity for the transmission and associated components. 📐 Dimensions Exterior Wheelbase: Specific dimensions not provided; consult manual for detailed schematics. Overall Length: Specific dimensions not provided; consult manual for detailed schematics. Overall Width: Specific dimensions not provided; consult manual for detailed schematics. Overall Height: Specific dimensions not provided; consult manual for detailed schematics. Weights Operating Weight: Specific weight not provided; consult manual for operational specifications. Drawbar Horsepower: Manual may specify drawbar HP ratings relevant to operational performance. 🛡️ Safety Features Ratings Operator Safety Guidelines: Emphasis on safe operating procedures, ROPS (Roll-Over Protective Structure) requirements, and general tractor safety. Active Features Brake System: Details on mechanical or hydraulic brake systems, parking brake operation, and adjustment procedures. Passive Features Operator Presence Control: Likely includes safety interlocks for starting and PTO engagement. Lighting Systems: Information on headlights, taillights, and work lights for visibility. 💡 Technology Features Infotainment Infotainment System: N/A (Tractors of this era typically lacked complex infotainment systems; focus is on functional controls). Driver Assistance Driver Assistance Features: N/A (Focus on mechanical and hydraulic systems, not electronic...