The IH (International Harvester) David Brown 1390 and 1394 tractors represent robust and reliable agricultural workhorses, likely produced from the late 1970s through the 1980s. These models are known for their solid engineering, a legacy inherited from David Brown's reputation for durable construction, further integrated into the IH product line. Designed for demanding farm operations, they typically feature diesel engines, manual transmissions with dual-stage clutches, and independent PTO systems. Their operational weight and axle ratings are crucial for handling various implements and heavy workloads. These tractors offer a functional operator interface, focusing on durability and essential controls, with features like a basic instrument panel and operator's platform, ensuring they can perform their intended tasks efficiently. This comprehensive service and repair workshop manual provides detailed factory-level information for the IH David Brown 1390 and 1394 tractors. It covers an extensive range of systems, including engine overhaul, fuel, cooling, lubrication, starting, and exhaust systems. The manual also details transmission and drivetrain components, hydraulic systems, electrical systems with wiring diagrams, braking, steering, and chassis repairs. Included are routine maintenance procedures, step-by-step repair instructions, troubleshooting guides for diagnosing issues, and critical technical specifications such as torque values and fluid capacities. This resource is designed to assist owners, operators, maintenance personnel, and professional mechanics in accurately maintaining and repairing these tractors, ensuring their longevity and optimal performance. 🏷️ Basic Information Identification Make: IH (International Harvester) David Brown Model: 1390 / 1394 Product Type: Service & Repair Workshop Manual Download PDF 👋 Introduction Market Position Target Audience: Owners, operators, maintenance personnel, and professional mechanics working with IH David Brown 1390 and 1394 tractors. Value Proposition Key Selling Point: Provides comprehensive, factory-level repair and maintenance information for cost-effective and accurate upkeep of these agricultural workhorses. Product Benefit Information Accuracy: Utilizes the same detailed information trusted by professional technicians, ensuring accuracy in repairs and diagnostics. 📋 Manual Details Coverage Areas Manual Coverage Scope: Complete factory service, repair, and troubleshooting procedures for IH David Brown 1390 and 1394 tractors. Page Count Estimated Page Count: Hundreds of pages (specific count not provided, but described as very detailed). Manual Type Manual Format: Digital Download (PDF) Language Language: English (implied by product description and typical manual availability) Format Compatibility Operating Systems: Compatible with all Windows and MAC computers, tablets, and smartphones. Format Features Searchability: PDF format typically allows for text searching, significantly improving the efficiency of finding specific information. 📖 Manual Coverage Systems Covered Engine Systems: Engine overhaul, fuel system (injection pump, injectors, fuel lines), cooling system, lubrication system, starting system, exhaust system. Transmission And Drivetrain: Gearbox overhaul (including power shift if applicable), clutch assembly, differential, final drives, PTO (Power Take-Off) system. Hydraulic System: Hydraulic pump, control valves, lift arms, hydraulic cylinders, troubleshooting hydraulic issues, fluid maintenance. Electrical System: Wiring diagrams, starter motor, alternator, battery, lighting systems, instrument panel, troubleshooting electrical faults. Braking System: Brake pedal assembly, brake master cylinder, brake actuators, brake fluid specifications, brake adjustment and repair. Steering System: Power steering system (if equipped), steering linkages, steering column, troubleshooting steering. Chassis And Body: Front axle, rear axle, wheel bearings, mounting of fenders, operator’s platform, hood assembly, general chassis repairs. Chassis And Suspension: Front wheel drive (if equipped), steering geometry, linkage wear, and adjustment procedures. Procedures Included Maintenance Procedures: Routine servicing, lubrication points, filter replacement intervals, fluid level checks, pre-operation checks. Repair Procedures: Step-by-step instructions for all major component overhauls and component replacements. Troubleshooting Guides: Diagnostic procedures for identifying and rectifying common and uncommon issues across all systems. Technical Specifications: Torque values, clearance measurements, timing settings, fluid capacities, and other critical data. Testing And Adjustment: Procedures for setting valve clearances, injection pump timing, hydraulic system pressures, and clutch adjustments. Technical Depth Depth Of Coverage: Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, suitable for professional mechanics. Diagram Utility: Exploded diagrams are invaluable for identifying parts and understanding assembly sequences during repairs. 📊 Manual Specifications File Format File Type: PDF Print Quality Printable: Yes, individual pages or the entire manual can be printed. Licensing Usage License: Lifetime use, no expiry dates, no renewal fees, usable on multiple devices. Content Type Content Features: Detailed photos, diagrams, exploded views, step-by-step instructions. ⚙️ Engine Specifications Primary Engine Engine Type: Diesel (likely Perkins or a proprietary IH engine of the era) Engine Variant 1390 Displacement 1390: Typically around 3.9 Liters (236 cubic inches) for engines powering this class of tractor (e.g., Perkins 4.248). Engine Variant 1394 Displacement 1394: Likely similar to the 1390, possibly with a slightly higher output version or different engine option. Performance 1390 Horsepower 1390: Estimated around 75-85 PTO horsepower (specific figures would be in the manual). Performance 1394 Horsepower 1394: Likely in a similar range to the 1390, possibly slightly higher depending on engine tuning and configuration. Fuel System Fuel Injection: Mechanical fuel injection system, likely with rotary...