🏷️ Basic Information Identification Make: International Harvester Model: 674 Product Name: International Harvester Tractor 674 Factory Service Repair Manual Codes Manual Type Code: FSM (Factory Service Manual) 👋 Introduction Market Position Historical Segment: Utility tractor, designed for a wide range of agricultural tasks, from fieldwork to light construction. Competitive Analysis Key Competitors: Ford, John Deere, Massey Ferguson, Case IH (during its operational period). Key Features Tractor Design Philosophy: Robust construction, reliable performance, user-friendly operation, and versatility for farm operations. Manual Access: Easy navigation via table of contents, facilitating quick access to required information. Manual Value Proposition Benefit To Owner: Enables owners to perform maintenance, troubleshooting, and repairs independently, saving on service costs and reducing downtime. Cost Savings: Enables significant cost savings by avoiding dealership labor charges for repairs and maintenance. 📋 Manual Details Coverage Areas Primary Coverage: International Harvester Tractor 674 Additional Coverage: Troubleshooting guides, maintenance schedules, wiring diagrams, diagnostic procedures, and parts identification. Page Count Estimated Page Count: Detailed (Specific page count not provided, but described as comprehensive) Manual Type Type: Factory Service Repair Manual Language Primary Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: Engine overhaul, fuel system, cooling system, lubrication, ignition system (if applicable for diesel pre-heating/starting), exhaust system. Powertrain Systems: Clutch, transmission (gearbox), final drives, differential, power take-off (PTO). Hydraulics Systems: Hydraulic pump, control valves, lift arms, hydraulic fluid system, external hydraulic circuits. Electrical Systems: Wiring diagrams, starter system, charging system, lighting, instrumentation, battery. Chassis And Steering: Front axle, rear axle, steering system (mechanical and/or power steering), braking system. Operator Station: Operator controls, seat, platform, dashboard, safety features. Braking System Coverage: Service and repair of internal or external contracting shoe brakes, brake adjustments, and hydraulic brake lines. Steering System Coverage: Mechanical steering box, tie rods, linkage maintenance, and power steering unit service (if equipped). Frontend And Steering Geometry: Includes specifications for front axle alignment and steering component checks. Procedures Included Maintenance Procedures: Scheduled maintenance, lubrication points and intervals, filter replacement, fluid checks and changes. Repair Procedures: Detailed step-by-step repair instructions for all major components and systems. Troubleshooting: Systematic diagnostic procedures, common problems and their solutions, fault finding guides. Disassembly And Assembly: Complete instructions for dismantling and reassembling all tractor systems. Specification Data: Includes critical specifications like bolt torques, hydraulic pressures, engine clearances, and wear limits. Hydraulic System Calibration: Procedures for calibrating the hydraulic lift system and setting pressure relief valves. Technical Depth Diagnostic Capability: Advanced diagnostics, including electrical schematics and hydraulic circuit analysis. Rebuild Procedures: Comprehensive rebuild procedures for engines, transmissions, and hydraulic components. Specifications And Tolerances: Detailed torque specifications, clearance measurements, and operational parameters. Repair Complexity: Covers everything from routine fluid changes and filter replacements to full engine and transmission rebuilds. Component Identification: Detailed diagrams and part numbers for identifying specific components during repair. 📊 Manual Specifications File Format Format Details: PDF; requires Adobe PDF Reader for viewing and WinZip for potential extraction. Compatibility: Compatible with all versions of Windows and Mac operating systems. Searchability: PDF format typically allows for text searching within the document. Print Quality Printability: Printable pages available for all content. Binding Type Binding Method: Not applicable for digital format; if printed, would be professional binding. Paper Type Paper Quality: Not applicable for digital format; original manuals were typically on durable paper stock. ⚙️ Engine Specifications Primary Engine Engine Manufacturer Type: Likely a D or DT series diesel engine (e.g., DT 239, DT 301, or similar Perkins derivatives used by IH). Performance Horsepower Range Estimated: Approximately 60-75 PTO horsepower (specific engine variant dependent). Engine Displacement Estimated: Likely in the range of 239 to 301 cubic inches (3.9 to 4.9 liters), depending on the specific engine model. Fuel System Fuel Type: Diesel Injection System: Direct injection, likely with a distributor-type or inline injection pump. Filtration: Includes details on fuel filters, primary and secondary, and their replacement intervals. 🔧 Transmission Standard Transmission Type: Likely a partially synchronized or fully synchronized gearbox with multiple forward and reverse gears (e.g., 8x4, 12x4, or 16x4 configurations). Optional Optional Gearbox Features: Potential for a synchronizer for easier shifting or a creeper gear option for very slow speeds. Features Power Take Off Pto: Standard 540 RPM and potentially an optional 1000 RPM PTO. 📐 Dimensions Exterior Wheelbase: Varies by configuration, but typical for a tractor of this size and era. Weights Operating Weight: Estimated range of 5,000 - 7,000 lbs (2270 - 3175 kg) depending on configuration and options. 💡 Technology Features Infotainment Operator Interface: Basic mechanical controls, instrument panel for engine monitoring (oil pressure, temperature, battery voltage), fuel gauge. Driver Assistance Traction Enhancement: Differential lock for improved traction in slippery conditions. Connectivity Farm Management Integration: Not applicable in the modern sense; primary connectivity is through mechanical linkages for implements. 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250-400 hours of operation, or...