🏷️ Basic Information Identification Make: David Brown Model: 1490 Tractor Codes Manual Product Name: David Brown 1490 Tractor WSM Service Manual Repair PDF Download 👋 Introduction Market Position Target Audience: Tractor owners, mechanics, and DIY enthusiasts seeking to perform repairs and maintenance on the David Brown 1490. Competitive Analysis Value Proposition: Enables users to perform their own repairs, saving significant costs compared to professional mechanic services. Provides comprehensive information for efficient and effective maintenance. Key Features Manual Benefits: Saves money, simplifies repairs with step-by-step instructions and visuals, enhances user knowledge and independence from mechanics. Content Highlight: Includes pictures and wiring diagrams on all areas of repair. 📋 Manual Details Coverage Areas General Coverage: All services and repairs, routine maintenance. Repair Scope: In-depth, step-by-step instructions for all areas of repair. Page Count Estimated Page Count: Not specified, but described as 'full professional quality in depth'. Manual Type Type: Service Repair Manual (WSM) Language Language: English Format File Format: PDF Delivery Method: Instant Download Printability: Full printable Software Requirements: Adobe PDF Reader Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine Service: Comprehensive engine repair, overhaul, and diagnostics. Fuel System: Detailed procedures for fuel injection, pumps, and filters. Cooling System: Radiator, thermostat, water pump, and coolant specifications. Lubrication System: Oil pump, filter, pressure checks, and fluid types. Electrical System: Wiring diagrams, starter, alternator, battery, and ignition system repair. Transmission System: Repair and maintenance of the gearbox, clutch, and PTO. Hydraulic System: Power steering, hydraulics, and lift systems. Braking System: Brake shoe, drum, and hydraulic system service. Steering System: Front axle, steering linkages, and power steering unit. Suspension: Front axle and wheel bearing maintenance. Chassis And Bodywork: Frame, fenders, cab structure, and panel repairs. Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication points, and safety checks. Troubleshooting: Diagnostic procedures and symptom-based troubleshooting guides. Repair Instructions: Detailed step-by-step repair procedures with visual aids. Overhaul Procedures: Complete engine, transmission, and hydraulic unit rebuilds. Component Replacement: Instructions for replacing individual parts and assemblies. Wiring Diagrams: Explicitly mentioned as included for all areas of repair. Technical Depth Depth: Comprehensive coverage from basic maintenance to complete rebuilds. Detail Level: Easy-to-follow, step-by-step instructions with pictures. Diagnostic Tools: Implied coverage of diagnostic procedures, likely without specific electronic diagnostic tool requirements for this era of tractor. 📊 Manual Specifications File Format Type: PDF Quality: Professional quality, in-depth. Searchability: Likely text-searchable PDF, greatly aiding in finding specific information. Print Quality Printability: Fully printable for workshop use. Binding Type Binding: Digital (Downloadable PDF) Paper Type Paper Type: Not applicable (digital format) ⚙️ Engine Specifications Primary Engine Manufacturer: David Brown (likely based on an existing engine supplier or in-house design) Engine Type: Diesel Configuration: Likely a 3 or 4-cylinder engine. Displacement: Likely in the range of 3.5-4.5 liters for the 3 and 4 cylinder variants. Exact figures in manual. Performance Horsepower Rating: Approximately 66-72 PTO HP (based on general knowledge of the 1490 model). Torque Rating: Specific torque figures are not provided in the product description but would be detailed within the manual. Fuel System Injection Type: Direct injection, likely with a rotary or inline injection pump. Fuel Type: Diesel Fuel 🔧 Transmission Standard Gearbox Type: David Brown's own range of transmissions, likely a constant mesh or synchromesh gearbox. Number Of Gears: Commonly 12 forward and 4 reverse gears (2WD and 4WD variants). Optional Powertrain Options: Available in 2WD and 4WD configurations. Features Pto: Includes Power Take-Off (PTO) specifications and maintenance. 📐 Dimensions Exterior Wheelbase: Specific wheelbase dimensions not provided but would be detailed in the manual. Weights Operating Weight: Typical operating weight around 2400-2700 kg, depending on configuration. Exact figures in manual. 🛡️ Safety Features Active Features Braking System Type: Hydraulic drum brakes, service brakes are independent and operated by pedals. Passive Features Operator Station: Cab or ROPS options would be available; manual covers cab systems if equipped. 💡 Technology Features Infotainment Features: Not applicable; this is a tractor from an era before infotainment systems were common in agricultural machinery. Driver Assistance Features: Basic operational controls. No advanced driver assistance systems. Connectivity Features: Not applicable. 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 250 hours, but specific interval detailed in manual. Air Filter Service: Service as needed, depending on operating conditions; detailed in manual. Transmission Oil Change: Typically every 1000 hours, but specific interval detailed in manual. Fluid Specifications Engine Oil Type: API CD or CE rated multi-viscosity oil, typically 15W-40. Exact specification in manual. Hydraulic Fluid Type: Universal Tractor Transmission Oil (UTTO) or similar hydraulic fluid meeting specific viscosity and performance standards. Detailed in manual. Coolant Type: Ethylene glycol-based antifreeze/coolant mixture. Specific concentration and type detailed in manual. Transmission Fluid Capacity: Specific capacity not listed but detailed in the manual. Known Issues Common Wear Points: Wear in clutch, PTO, hydraulic pump, and front axle components are...