🏷️ Basic Information Identification Make: International Harvester Model: 674 Product Type: Service Repair Manual Codes Manual Identifier: WSM (Workshop Manual) 👋 Introduction Market Position Target User: Owners, operators, and maintenance personnel for the International Harvester 674 tractor Competitive Analysis Value Proposition: Empowers users to perform their own repairs, saving significant costs on labor and professional services. Key Features Ease Of Use: Easy-to-follow step-by-step instructions Information Completeness: Covers all services and repairs, including routine maintenance 📋 Manual Details Coverage Areas General Coverage: All areas of repair, routine maintenance, services Specific Systems: Engine, transmission, hydraulics, electrical system, steering, brakes, drivetrain, operator station, PTO, hitch Page Count Estimated Page Count: Not specified, but described as 'in depth' and 'full professional quality' Manual Type Type: Service Repair Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download Requirements Software Requirement: Adobe PDF Reader Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, overhaul procedures, component testing, troubleshooting Transmission: Rebuild instructions, gear synchronization, clutch adjustments, hydraulic control system Hydraulics: Hydraulic pump service, cylinder repair, valve body diagnostics, fluid flow charts Electrical System: Wiring diagrams, component testing, starter, alternator, lighting system, ignition system (if applicable) Steering: Power steering system service, linkage adjustments, component replacement Brakes: Brake system overhaul, hydraulic line inspection, brake component replacement Drivetrain: Front and rear axle service, driveshaft maintenance, differential troubleshooting Operator Station: Control linkages, seating adjustment, platform repairs Pto: Power Take-Off unit service, engagement mechanisms, gear maintenance Hitch: Three-point hitch service, hydraulic lift components, draft control adjustments Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication points, daily checks Troubleshooting: Diagnostic charts, symptom-based repair guidance Component Repair: Step-by-step instructions for disassembly, repair, and reassembly of all major components Adjustments: Clutch, brakes, hydraulics, PTO engagement, steering Diagnostics: Electrical testing, hydraulic pressure testing, engine performance checks Technical Depth Depth: Comprehensive, suitable for professional technicians and skilled DIY users Visual Aids: Pictures, illustrations, and wiring diagrams included 📊 Manual Specifications File Format Print Quality: Full printable Searchability: Implied by PDF format, allowing for text search of keywords Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Diesel Engine Family: Likely based on International Harvester's D-series or BD-series engines Displacement: Typically in the range of 2.5 to 3.5 liters for this class of tractor, specific displacement for 674 needs manual verification. Performance Horsepower: Approximate range of 50-70 PTO horsepower, depending on specific engine variant. Manual will provide exact figures. Torque: Specific torque figures will be detailed in the manual. Fuel System Fuel Type: Diesel Injection System: Likely rotary or inline injection pump. Manual will specify model and service procedures. 🔧 Transmission Standard Transmission Type: Likely a synchronized constant mesh gearbox, possibly with a multi-speed range transmission (e.g., 8-speed or 16-speed). Optional Optional Transmission: Possible options might include a creeper gear or powershift capabilities depending on the specific build, though less common for this model year. Features Clutch: Dual-stage clutch for PTO engagement and transmission drive. Gear Ratios: Detailed gear ratios for all forward and reverse speeds will be found in the manual. Transmission Fluid Type: Specific fluid type (e.g., IH Hy-Trans, or equivalent universal tractor transmission fluid - UTTO) and capacity will be in the manual. 📐 Dimensions Exterior Wheelbase: Approximate wheelbase for tractors of this era and size is typically around 80-90 inches. Manual will provide exact measurement. Overall Length: Will vary based on hitch configuration, but typically in the 120-140 inch range. Manual is the definitive source. Weights Operating Weight: Typically in the 4,000-5,500 lb range. Manual will list specific base operating weight. 🛡️ Safety Features Ratings Rollover Protection: ROPS (Roll-Over Protective Structure) may be standard or optional depending on the market and year of manufacture. Manual will specify available configurations. Active Features Braking System: Hydraulically activated, internal expanding shoe or disc brakes. Manual details service. Passive Features Seatbelt: Seatbelt availability will depend on ROPS installation. Manual may cover installation and use. 💡 Technology Features Infotainment Infotainment System: N/A - This is a utility tractor from the 1970s, technology is focused on mechanical functionality and operator controls. Driver Assistance Driver Assistance: N/A - Focus is on mechanical operation and operator input. Connectivity Connectivity Features: N/A 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250-500 operating hours. Manual will specify exact interval and oil type. Transmission Fluid Change: Typically annually or every 500-1000 operating hours. Manual will specify exact interval and fluid type. Hydraulic Fluid Change: Similar to transmission fluid change intervals. Manual will provide specific guidance. Fluid Specifications Engine Oil Viscosity: Likely SAE 15W-40 or 30W for diesel engines. Manual will confirm. Coolant Type: Ethylene glycol based antifreeze, typically a 50/50 mix with distilled water. Manual will specify type and capacity. Known Issues Common Wear Items: Clutch plates, hydraulic seals, PTO components, and common...