This manual covers the International Harvester (David Brown) 1190, 1194, 1290, and 1390 tractor models, likely produced from the late 1970s through the 1980s. These tractors represent a blend of David Brown's robust construction and International Harvester's engineering expertise. Known for their reliability and solid build quality, these diesel-powered machines were designed for a variety of agricultural tasks. Features include liquid-cooled engines, constant mesh gearboxes with synchromesh, and options for two-wheel drive or four-wheel drive configurations, alongside a dependable hydraulic system. This comprehensive Service & Repair Workshop Manual in English provides in-depth information for owners, mechanics, and technicians. It details routine maintenance, lubrication schedules, and fluid specifications, alongside extensive troubleshooting guides and step-by-step repair instructions for all major systems, including the engine, transmission, hydraulics, and electrical components. With hundreds of detailed photos and exploded diagrams, this manual offers factory-level detail on overhaul procedures, technical specifications, and safety guidelines, ensuring the optimal performance and longevity of your International Harvester (David Brown) tractor. 🏷️ Basic Information Identification Make: International Harvester (David Brown) Model: 1190, 1194, 1290, 1294, 1390 Tractor 👋 Introduction Market Position Target Audience: Owners, mechanics, technicians requiring in-depth repair and maintenance information Competitive Analysis Quality Standard: Equivalent to factory service manuals used by authorized dealerships Key Features Completeness: Covers all repair, servicing, and troubleshooting procedures for the specified models Accessibility: Instant download for immediate use on multiple devices Longevity: Lifetime use with no expiry dates or renewal fees 📋 Manual Details Coverage Areas Manual Type: Service & Repair Workshop Manual Language: English Format: Downloadable PDF Availability: Instant Download Usage License: Unlimited installations, lifetime use, no expiry 📖 Manual Coverage Systems Covered Engine: Detailed overhaul, troubleshooting, lubrication, cooling system, fuel system, starting and charging system Transmission: Gearbox, clutch, PTO, differential, final drives, hydraulic transmission (if applicable) Hydraulics: Hydraulic pump, valves, cylinders, linkage, remote control units, tractor hydraulic system troubleshooting Electrical: Wiring diagrams, starter motor, alternator, battery, lighting, instrumentation, troubleshooting Chassis And Steering: Front axle, rear axle, braking system, steering system, wheel alignment Operator Station: Controls, dashboard, seat, safety features, cab (if equipped) Procedures Included Maintenance: Routine service, lubrication schedules, fluid checks and changes, filter replacements Troubleshooting: Diagnostic charts, symptom-based troubleshooting for all major systems Repair: Step-by-step repair instructions for all components, including detailed disassembly and reassembly procedures Overhaul: Complete engine rebuild, transmission overhaul, hydraulic system overhaul Technical Depth Detail Level: Comprehensive (factory level) Illustrations: Hundreds of detailed photos and exploded diagrams Specifications: Torque values, clearances, timing settings, fluid capacities, part numbers 📊 Manual Specifications File Format Format: PDF (Portable Document Format) Compatibility: Windows and macOS Searchability: Likely text-searchable (standard for professionally produced PDFs) Print Quality Printability: Full page or single page printing capability Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Family: International Harvester / David Brown (likely AD Series or similar) Performance Estimated Hp 1190: Approx. 70-80 HP (Engine rating may vary) Estimated Hp 1390: Approx. 85-95 HP (Engine rating may vary) Fuel System Fuel Type: Diesel Injection Type: Likely direct injection (specifics in manual) Cooling System Cooling Method: Liquid-cooled 🔧 Transmission Standard Transmission Type Standard: Constant mesh gearbox with synchromesh (specific configurations vary by model) Optional Transmission Type Optional: Some models may have had optional powershift or synchronized road drive transmissions Features Pto Speed: Standard PTO speeds (e.g., 540/1000 RPM) and related PTO engagement procedures Differential Lock: Operation and maintenance of the differential lock 📐 Dimensions Exterior Tractor Layout: Two-wheel drive (standard), with 4WD options likely available for some models Weights Operating Weight: Varies significantly by model and configuration (e.g., 6,000-9,000 lbs or more), specific details in manual 🛡️ Safety Features Active Features Braking System: Service brake system description, adjustment, and repair (likely hydraulic drum or disc) Passive Features Operator Protection: Information on ROPS (Roll-Over Protective Structure) if fitted, and general safety advice 💡 Technology Features Infotainment Instrumentation: Basic analogue gauges for oil pressure, coolant temperature, fuel level, ammeter/voltmeter, tachometer, and hour meter. Driver Assistance Traction Aid: Differential lock for improved traction in slippery conditions. Connectivity Pto Control: Manual PTO engagement lever and potentially an independent PTO (IPTO) system. 🔧 Maintenance Service Intervals Engine Oil Change: Typically 250-500 operating hours, refer to manual for exact intervals and oil type. Transmission Fluid Change: Refer to manual; often associated with hydraulic fluid service. Fluid Specifications Engine Oil: API CD or CE service category diesel engine oil, SAE 15W-30 or 10W-30 depending on climate. Specific API rating and viscosity grade in manual. Hydraulic Fluid: Tractor Hydraulic Fluid (THF) or equivalent. Specific IH or David Brown approved fluids listed in manual. Transmission Fluid: Refer to manual for specific transmission fluid type (e.g., GL-4 gear oil for some components). Known Issues Common Wear Items: Clutch wear, hydraulic pump efficiency, front axle kingpins, PTO spline wear, starter motor reliability. Electrical Issues: Wiring harness degradation,...