This manual covers the David Brown 1490 tractor, a robust agricultural machine manufactured by Case IH, part of the 1400 Series. Produced during the late 1970s to early 1980s, the 1490 is recognized for its reliable performance and straightforward engineering, making it a dependable workhorse for various farming operations. Its design prioritizes functionality and durability, reflecting the strong heritage of British agricultural machinery. This tractor is equipped with a naturally aspirated diesel engine and a manual synchromesh transmission, offering a solid foundation for demanding tasks. This comprehensive factory service repair workshop manual provides extensive coverage for the David Brown 1490 tractor. It is designed to assist professional mechanics, technicians, and owners in maintaining, troubleshooting, and repairing the vehicle. The manual details procedures for engine, transmission, hydraulic, electrical, brake, and steering systems, among others. It includes routine maintenance schedules, diagnostic guides, overhaul procedures, technical specifications, and torque values, all presented with step-by-step instructions and visual aids to ensure accuracy and clarity. 🏷️ Basic Information Identification Make: David Brown Manufacturer Division: Case IH Model: 1490 Product Type: Tractor Codes Series Designation: 1400 Series 👋 Introduction Market Position Target Audience: Professional mechanics, technicians, and serious tractor owners Competitive Analysis Advantage Over Alternatives: Comprehensive factory content, lifetime access, instant download Key Features Key Selling Point: Authoritative, detailed, and permanent resource for maintaining the David Brown 1490 Content Detail: Equips users with the knowledge of professional mechanics 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, and Troubleshooting Secondary Coverage: Maintenance and Diagnostics Page Count Estimated Page Count: Hundreds (specific number not provided, described as extensive) Manual Type Type: Factory Service Repair Workshop Manual Language Language: English (implied by product description context) Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine System: Complete overhaul, diagnostics, fuel system, cooling system, lubrication system Transmission System: Gearbox repair, clutch service, PTO operation, hydraulic transmission service Hydraulic System: Hydraulic pump, cylinders, control valves, lift system service Electrical System: Wiring diagrams, starter motor, alternator, battery, lighting, troubleshooting Brake System: Brake actuation, parking brake, hydraulic brake service Steering System: Power steering system repair, linkage adjustments Front Axle And Suspension: Front axle overhaul, steering components, kingpins Rear Axle And Drive Shaft: Rear axle assembly, differential service, drive shafts Cooling System: Radiator, thermostat, water pump, coolant specifications Fuel System: Injector pump, injectors, fuel filters, bleeding procedures Exhaust System: Muffler, exhaust pipe inspection and replacement Operator Station And Bodywork: Cab removal, seat service, panel repairs, fenders Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication points, greasing schedule Troubleshooting Guides: Step-by-step diagnostic procedures for common and complex issues Engine Overhaul: Complete engine rebuild procedures, piston and ring replacement, cylinder head service Transmission Rebuild: Detailed steps for gearbox and differential disassembly and reassembly Hydraulic System Repair: Pump, valve, and cylinder repair and calibration Electrical Component Testing: Testing of starter, alternator, solenoids, and sensors Brake System Bleeding And Adjustment: Procedures for air removal and component adjustment Torque Specifications: Precise torque values for all critical fasteners Alignment Procedures: Front-end alignment specifications and adjustments Special Tool Identification: Listing and description of necessary specialized tools Technical Depth Depth: Comprehensive factory-level repair and servicing Diagnostic Capability: Advanced diagnostic procedures for all major systems Visual Aids: Hundreds of detailed photos and exploded diagrams Instructional Style: Step-by-step instructions for clarity and accuracy 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content (standard for high-quality PDFs) Print Quality Printability: Full print capability (single pages or entire manual) Resolution: High-resolution for clear viewing of diagrams and text Binding Type Binding: Digital (no physical binding) Paper Type Paper Type: Digital (no physical paper) Licensing Usage License: Lifetime use on unlimited devices, no expiry ⚙️ Engine Specifications Primary Engine Engine Manufacturer Model: David Brown AD4/55 (or similar variant for 1490) Engine Type: Naturally Aspirated Diesel Cylinders: 4 Displacement Liters: Approximately 3.9 Liters (236 cubic inches) Performance Horsepower Rated: Approximately 60-70 PTO HP (exact rating may vary by specific build) Torque Peak: Specific figures to be detailed in manual, typically around 150-170 lb-ft Fuel System Fuel Injection Type: Direct Injection (e.g., Lucas CAV or Simms/C.A.V. DPA) Fuel Filter Type: Spin-on primary and secondary filters 🔧 Transmission Standard Transmission Type: Manual Synchromesh (e.g., 12-speed, 8 forward + 4 reverse or similar) Optional Optional Transmission: Likely a 12-speed variant or possibly creeper gear options depending on market Features Power Take Off Pto: Standard 540 RPM PTO, possibly 1000 RPM option Differential Lock: Rear differential lock (mechanical engagement) 📐 Dimensions Exterior Wheelbase Inches: Approximately 84-86 inches (2134-2184 mm) Weights Operating Weight Lbs: Approximately 6,000 - 7,000 lbs (2720 - 3175 kg) without ballast Max Ballast Capacity: Significant capacity for front and rear ballast (detailed in manual) 💡 Technology Features Infotainment Infotainment System: N/A (This is a pre-modern agricultural tractor, no infotainment system) Driver Assistance Driver Assistance Features: N/A (This is a pre-modern agricultural tractor, no electronic...