This manual covers International Harvester models 454, 474, 475, 574, and 674, a line of robust and versatile utility tractors designed for agricultural and general work. Likely produced from the late 1960s through the 1970s, these tractors are characterized by their reliable diesel engines, typically naturally aspirated with indirect injection, and manual transmissions offering multiple gear selections. Their engineering prioritizes durability and functionality, making them dependable workhorses for demanding tasks. The International Harvester legacy is one of providing essential machinery for farming and industry, and these models represent a significant part of that heritage. This Factory Service Repair Manual provides comprehensive information essential for the maintenance, repair, and troubleshooting of your International Harvester tractor. It details procedures for all major systems, including the engine, transmission, hydraulics, electrical system, cooling, fuel, and exhaust. Within its extensive coverage, you will find step-by-step instructions for routine maintenance, major overhauls, component replacement, and calibration. The manual also includes troubleshooting guides and detailed wiring diagrams, enabling owners and technicians to diagnose and resolve issues efficiently, ensuring optimal performance and longevity of the vehicle. 🏷️ Basic Information Identification Make: International Harvester Model: 454, 474, 475, 574, 674 Product Type: Factory Service Repair Manual Codes Product Code: IH-454-674-FSRM 👋 Introduction Market Position Sector: Agricultural and Utility Tractors Competitive Analysis Competitors: Massey Ferguson, John Deere, Ford, Fiat, David Brown (during its production era) Key Features Vehicle Focus: Robust, versatile utility tractors for farming and general work Manual Benefit 1: Enables cost savings through DIY repairs and maintenance Manual Benefit 2: Provides in-depth vehicle knowledge for confident operation and troubleshooting Manual Benefit 3: Convenient access to repair information anytime, anywhere Manual Accessibility: Easily searchable PDF format with table of contents for quick information retrieval 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive service and repair information Secondary Coverage: Troubleshooting, maintenance schedules, wiring diagrams Page Count Estimated Page Count: Extensive (Exact count not specified, but described as comprehensive) Manual Type Type: Factory Service Repair Manual / Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Service: Detailed overhaul, repair, and diagnostics for various International Harvester diesel engines Transmission Service: Repair and servicing of mechanical transmissions and associated components Hydraulics Service: Troubleshooting, repair, and maintenance of hydraulic systems (lift, steering, etc.) Electrical System: Wiring diagrams, component testing, and troubleshooting for the tractor's electrical system Chassis And Drivetrain: Service for axles, steering, brakes, and driveline components Cooling System: Radiator, thermostat, water pump, and fan service Fuel System: Injector pump, injectors, filters, and fuel lines service Exhaust System: Muffler, exhaust pipe, and related component inspection and repair Power Takeoff Pto: Service and repair of the PTO clutch and drive components Front Axle Steering: Maintenance and repair of the front axle and steering mechanisms Procedures Included Routine Maintenance: Lubrication, filter changes, fluid checks, and belt adjustments Major Overhauls: Complete engine rebuilds, transmission rebuilds, and hydraulic system overhauls Troubleshooting Guides: Systematic approaches to diagnosing and resolving common and uncommon issues Component Replacement: Step-by-step instructions for replacing individual parts and assemblies Calibration And Adjustment: Procedures for setting engine timing, hydraulic pressures, and other critical adjustments Wiring Diagrams: Includes detailed wiring diagrams for electrical troubleshooting Technical Depth Depth: Comprehensive, covering from basic maintenance to full component rebuilds and diagnostics Diagnostic Capabilities: Provides diagnostic procedures for identifying faults in all major systems 📊 Manual Specifications File Format Compatibility: Usable on all versions of Windows & Mac Software Requirements: Adobe PDF Reader & WinZip Print Quality Quality: High-quality, clear and legible text and diagrams Binding Type Binding: Digital Download (PDF) Paper Type Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Manufacturer: International Harvester (often utilizing modified variants of their own engines or sourced components) Engine Types: Typically naturally aspirated, indirect injection diesel engines Performance Displacement Range: Varies by model, common displacements include 2.5L to 3.5L (approximate) Horsepower Range: Ranging from approximately 45 HP to 70 HP depending on the model Fuel System Injection Type: Indirect Injection (IDI) Fuel Type: Diesel 🔧 Transmission Standard Type: Constant mesh manual transmission (e.g., 8-speed or 16-speed with creeper gears) Optional Features: Some models may have offered an optional hydraulic power steering system Features Gear Selection: Multiple forward and reverse gears, often with high/low range options Clutch Type: Dry single-plate clutch 📐 Dimensions Exterior Wheelbase: Varies by model, typically around 80-90 inches Weights Operating Weight: Generally in the range of 4,000 - 5,500 lbs, depending on configuration 🛡️ Safety Features Ratings Rollover Protection: ROPS (Rollover Protective Structure) availability may vary by original specification and aftermarket fitment Active Features Braking System: Mechanical disc brakes or drum brakes (model dependent) Passive Features Operator Station: Open operator station; safety is primarily dependent on operator attentiveness and proper use 💡 Technology Features Infotainment Infotainment System: N/A (Basic tractor features, no infotainment) Driver Assistance Driver Aid: N/A (Relies on operator skill) Connectivity Connectivity...