🏷️ Basic Information Identification Make: International Harvester Model: 454, 474, 475, 574, 674 Tractor Engines Associated Vehicles: International Harvester 2400, 2500 Tractor Units Codes Product Identifier: International Harvester Engines 454 474 475 574 674 -- 2400 2500 Workshop Manual 👋 Introduction Market Position Historical Context: These engines powered a range of robust International Harvester agricultural and industrial tractors. The '400' and '70' series represented key models in their tractor lineup during the late 1960s and 1970s, known for their durability and workhorse capabilities. The 2400 and 2500 series are industrial tractors that likely utilized these engines. Competitive Analysis Competitive Landscape: During their production era, these engines competed with similar displacement diesel engines from manufacturers like Ford, John Deere, Massey Ferguson, and Perkins, which were prevalent in the agricultural and construction equipment markets. Key Features Manual Value Proposition: This workshop manual provides essential, in-depth technical information for the maintenance, repair, and overhaul of these specific International Harvester engines and their associated tractor units. It is invaluable for owners, mechanics, and restoration specialists seeking to keep these legacy machines operational. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair for International Harvester Engines 454, 474, 475, 574, 674 Secondary Coverage: Associated Tractor Units: International Harvester 2400, 2500 Page Count Estimated Pages: Detailed information suggests a comprehensive workshop manual, likely exceeding 300 pages, common for full engine rebuilds and diagnostics. Manual Type Type: Full Workshop Manual / Technical Manual Language Language: English (Presumed, based on product description context and typical manual languages for this era and brand). Format Delivery Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine block, cylinder head, crankshaft, camshaft, pistons, connecting rods, timing gears, lubrication system, cooling system. Fuel System: Fuel injection pump (e.g., CAV, Bosch, Simms depending on specific application), injectors, fuel lines, filters, fuel tank. Lubrication System: Oil pump, oil filter, oil passages, oil pressure specifications, oil capacity, oil type recommendations. Cooling System: Radiator, water pump, thermostat, fan, coolant hoses, coolant type specifications, draining and filling procedures. Electrical System: Starting system (starter motor), charging system (alternator/generator), ignition system (if applicable, though these are primarily diesel), wiring diagrams for engine components, sensor testing. Air Intake System: Air cleaner assembly, intake manifold, turbocharger (if equipped). Exhaust System: Exhaust manifold, exhaust pipe, muffler (if applicable). Power Take Off Pto: PTO engagement, operation, and potential maintenance for models equipped with PTO. Procedures Included Routine Maintenance: Oil changes, filter replacements (oil, fuel, air), coolant checks, belt tensioning, battery maintenance. Disassembly Assembly: Complete engine teardown and reassembly procedures for all major components. Troubleshooting: Diagnostic charts for common engine problems (e.g., starting issues, poor power, excessive smoke, knocking). Rebuilding Overhauling: Detailed instructions for engine rebuilds, including piston ring installation, bearing replacement, valve adjustments, cylinder head reconditioning. Component Testing: Procedures for testing fuel injection pump timing and output, injector spray patterns, compression testing, oil pressure testing. Calibration Adjustments: Valve lash adjustments, injection timing settings, governor adjustments (if applicable). Special Tools: Identification and usage of specialized tools required for specific repair or maintenance procedures. Technical Depth Depth: Comprehensive - covers from basic maintenance to complete engine overhaul, including detailed diagnostic procedures and specifications for all major engine systems. 📊 Manual Specifications File Format Format: PDF Print Quality Quality: High-resolution, suitable for printing individual pages or the entire manual. Text is likely searchable. Binding Type Binding: Not applicable (Digital Delivery) Paper Type Paper Type: Not applicable (Digital Delivery) Accessibility Ease Of Use: Designed for ease of use with digital format, allowing for quick searches and printing of specific sections. ⚙️ Engine Specifications Primary Engine Engine Family: Likely based on International Harvester's own diesel engine designs, often inline-four or inline-six cylinder configurations for this era. Specific engine families like BD-264, BD-282, BD-308 are common for IH tractors of this period and displacement range. Engine Displacement Range: Ranges typically from approximately 4.3 liters (264 cu in) to 5.0 liters (308 cu in), depending on the specific engine model (454, 474, etc.). Engine Type: Direct Injection Diesel Engine Performance Horsepower Range: Typically ranging from approximately 50 HP to 80 HP (net flywheel horsepower) depending on the specific engine model and application within the tractors. Torque Range: Torque figures would vary, but these engines are known for strong low-end torque suitable for agricultural applications. Fuel System Fuel Injection Type: Mechanical fuel injection, likely using rotary or inline injection pumps from reputable manufacturers like CAV, Bosch, or Simms. Fuel Type: Diesel Fuel Lubrication System Oil Capacity Typical: Approximately 6-8 U.S. quarts (5.7-7.6 liters) including filter, but specific capacity varies by engine model. The manual will specify exact amounts. Cooling System Cooling Method: Liquid Cooling (Water-cooled) 🔧 Transmission Standard Transmission Type Tractor: Manual transmission, often a 8-speed or 16-speed gearbox (e.g., Multi-Power option for some models). Specific transmission details might be covered in a separate tractor manual, but engine-transmission interface...