This workshop service manual covers the David Brown 1390 Tractor, a robust and reliable piece of agricultural machinery known for its enduring performance. David Brown tractors have a long-standing reputation for quality and durability in demanding farming environments, and the 1390, likely produced in the late 1970s to mid-1980s, represents a significant advancement in tractor design for its era. This manual is designed to provide comprehensive technical information for maintaining and repairing this esteemed model, ensuring its continued operational efficiency. The purpose of this manual is to offer detailed guidance for mechanical technicians, agricultural mechanics, and skilled owners. It encompasses a wide range of topics, including routine maintenance, comprehensive repair and overhaul procedures for all major systems such as the engine, fuel, electrical, transmission, drivetrain, hydraulics, steering, and brakes. The manual also covers bodywork, troubleshooting common and uncommon issues, and provides specific instructions for proprietary components, emphasizing safety with clear WARNING, CAUTION, and NOTE statements. It includes references to special tool numbers and is written in English for clarity and ease of use. 🏷️ Basic Information Identification Make: David Brown Model: 1390 Tractor Product Type: Workshop Service Manual 👋 Introduction Market Position Target Audience: Mechanical technicians, agricultural mechanics, skilled DIY tractor owners Competitive Analysis Value Proposition: Provides dealership-level technical information for owners and technicians to perform quality repairs and maintenance, saving on labor costs. Key Features Emphasis: Special aspects of product repair, clear identification of WARNING, CAUTION, and NOTE statements. Tool Identification: References specific David Brown 1390 Tractor special tool numbers and illustrations. 📋 Manual Details Coverage Areas Scope: Comprehensive repair and overhaul Page Count Estimated Pages: Not Specified (assumed comprehensive based on description) Manual Type Type: Workshop Service Manual Purpose: Primarily for mechanical technicians, but beneficial for informed owners. Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Engine removal, installation, disassembly, assembly, tune-ups, lubrication, cooling system (if applicable), exhaust system Fuel System: Fuel system components, diagnosis, repair, overhaul Ignition: Ignition system components, diagnosis, repair (if applicable - likely diesel, so glow plugs/starting aids) Electrical System: Electrical system components, wiring diagrams, diagnosis, repair Transmission: Transmission disassembly, assembly, repair, overhaul Drivetrain: Axles, differentials, driveshafts, PTO (Power Take-Off) Hydraulics: Hydraulic system components, pump, cylinders, control valves, diagnosis, repair Steering: Steering system components, diagnosis, repair Brakes: Brake system components, diagnosis, repair Bodywork: Body panels, fenders, operator's station, sheet metal repair Cooling System: Radiator, water pump, thermostat, hoses, and coolant maintenance. Exhaust: Exhaust manifold, pipe, and muffler inspection and replacement. Chassis: Frame, axles, and suspension components. Procedures Included Maintenance: Routine maintenance, servicing, lubrication schedules Troubleshooting: Diagnostic procedures for common and uncommon issues Repair: Detailed step-by-step repair instructions for all major components Overhaul: Complete overhaul procedures for engine, transmission, and hydraulic systems Installation Removal: Procedures for removing and installing major components and assemblies Proprietary Components: Instructions for repairs of proprietary components, with references to manufacturer guidelines Tune Ups: Engine tuning procedures, including fuel injection timing and valve adjustments. Assemblies Disassemblies: Detailed step-by-step instructions for the assembly and disassembly of all major tractor systems. Wheel Alignment: Procedures for checking and adjusting wheel alignment. Technical Depth Depth: Advanced diagnostics and repair, suitable for experienced technicians; assumes familiarity with general automotive practices and BRP product service Diagnostic Tools: References required diagnostic tools, including specialized David Brown tools. 📊 Manual Specifications File Format File Format: PDF Print Quality Printability: Printable Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Diesel (Specific engine details not provided in product info, but typical for this era tractor) Performance Horsepower Range: Typically in the 60-80 HP range for a tractor of this size and era (specifics would be in the manual). Torque: Not Specified (specific torque figures would be detailed in the manual). Fuel System Fuel Type: Diesel Fuel Injection System: Likely a rotary or inline injection pump system (specific details in manual). 🔧 Transmission Standard Transmission Type: Manual transmission with multiple gear ranges and potentially a synchronized or unsynchronized gearbox (specifics in manual). Optional Powershift Or Creeper: Could have optional creeper gears or a powershift option depending on the specific configuration (manual would detail). Features Pto: Standard PTO (Power Take-Off) operation and maintenance procedures. 📐 Dimensions Exterior Wheelbase: Not Specified (details in manual) Length: Not Specified (details in manual) Width: Not Specified (details in manual) Height: Not Specified (details in manual) Weights Operating Weight: Not Specified (details in manual) 🛡️ Safety Features Ratings Safety Standard Compliance: Adherence to general agricultural machinery safety standards of its production era. Active Features Warning Symbols: Manual includes specific WARNING, CAUTION, and NOTE markings for safety-critical procedures. Passive Features Operator Safety: Emphasizes safety precautions and the use of safety equipment during maintenance and repair. 💡 Technology Features Infotainment Infotainment System: N/A (Tractor of this era has minimal to no advanced...