🏷️ Basic Information Identification Make: David Brown Model: 1594 Tractor Product Type: Service Repair Manual (WSM) Codes Manual Identifier: WSM 👋 Introduction Market Position Target Audience: Tractor owners, mechanics, and DIY enthusiasts Value Proposition: Save significant money on repairs and maintenance Competitive Analysis Benefit Vs Dealership: Empowers users to perform their own repairs, reducing reliance on expensive dealership services Key Features Ease Of Use: Designed for user-friendliness with clear instructions and visuals Knowledge Enhancement: Increases user knowledge and understanding of tractor systems Workshop Utility: Printable pages for convenient use in the garage or workshop 📋 Manual Details Coverage Areas Overall Coverage: Comprehensive repair and service information Routine Maintenance: Included Troubleshooting: Included Component Repair: All major repair jobs covered Page Count Estimated Page Count: Varies by specific manual edition, but expected to be extensive given the depth implied Manual Type Type: Service Manual / Workshop Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download Accessibility Requirements: Adobe PDF Reader Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine: Complete overhaul, diagnostics, timing, fuel system, lubrication, cooling system Transmission: Gearbox repair, clutch, PTO operation and maintenance Hydraulics: Hydraulic pump, lift cover, external hydraulics, control systems Electrical System: Wiring diagrams, starting system, charging system, lighting, instrumentation Chassis And Steering: Front axle, steering system, brakes, wheels and tires Bodywork: Sheet metal repair, cab removal and installation (if applicable) Procedures Included Major Repairs: Engine rebuilds, transmission overhauls, hydraulic system repairs Routine Maintenance: Oil changes, filter replacements, greasing points, fluid level checks Diagnostics: Troubleshooting guides for common and uncommon problems Adjustments: Valve adjustments, brake adjustments, clutch adjustments Disassembly And Assembly: Detailed steps for component removal and reinstallation Technical Depth Depth: In-depth, professional quality service and repair Visual Aids: Includes pictures and diagrams for clarity Wiring Information: Detailed wiring diagrams provided Step By Step Instructions: Very easy to follow, step-by-step instructions 📊 Manual Specifications File Format Print Quality: Full Printable Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Manufacturer: David Brown (likely Perkins-based for this era) Engine Type: Diesel Engine Configuration: Likely a 4-cylinder or 6-cylinder inline diesel engine Displacement: Typical for this model range would be around 3.9L to 4.5L (e.g., 3.9L 4-cylinder or 4.5L 4-cylinder, or potentially a 6-cylinder variant around 6.2L). Exact specification depends on the specific 1594 variant. Bore X Stroke: Varies by specific engine variant. For example, a Perkins 4.236 (common in David Brown tractors of this era) has a bore of 3.875 in (98.4 mm) and a stroke of 5.00 in (127 mm). Performance Horsepower Rating: Approximately 70-85 PTO HP (subject to specific engine and transmission configuration). Torque Rating: Specific torque figures are engine variant dependent, but expected to be in the range of 180-220 lb-ft. Fuel System Fuel Type: Diesel Injection System: Likely a direct injection system with a mechanical fuel injection pump (e.g., Simms, CAV, or Bosch). Fuel Filter Part Number Example: Various common filters used, e.g., for Perkins engines, often CAV or Fram equivalents. Fluid Specifications Engine Oil Type: API CD or CE rated diesel engine oil, viscosity typically SAE 15W-30 or 20W-50 depending on ambient temperature. Engine Oil Capacity: Approximately 7.0 - 9.5 liters (7.4 - 10 US quarts), subject to specific engine block and filter. Coolant Type: Ethylene glycol based antifreeze with corrosion inhibitors, mixed 50/50 with distilled water. 🔧 Transmission Standard Transmission Type: Manual transmission with multiple gear ratios Gear Selection: Likely a 8-speed or 12-speed gearbox (e.g., 8 forward + 4 reverse, or 12 forward + 4 reverse with a creeper gear option). Clutch Type: Dual-stage dry plate clutch (one for transmission, one for PTO) Optional Powershift: While less common for this exact model designation, some later David Brown tractors offered partial powershift options. The 1594 is typically a manual gearbox tractor. Features Pto System: Independent 540/1000 RPM Power Take-Off (PTO), with a dual-stage clutch engagement. Fluid Specifications Transmission Oil Type: API GL-4 or GL-5 rated tractor hydraulic fluid or SAE 80W/90 gear oil for the gearbox. Tractor hydraulic fluid often serves both transmission and hydraulics. (e.g., John Deere J20C, Ford/New Holland M2C 134). Transmission Oil Capacity: Approximately 25-30 liters (26-32 US quarts) for the combined transmission and hydraulic system. 📐 Dimensions Exterior Overall Length: Approx. 3.7 meters (145 inches) Overall Width: Approx. 1.8 meters (71 inches) at rear track Wheelbase: Approx. 2.3 meters (90 inches) Weights Operating Weight: Approx. 2,600 - 3,000 kg (5,730 - 6,615 lbs), depending on configuration and fitted equipment. Front Axle Weight: Approx. 1,000 kg (2,205 lbs) Rear Axle Weight: Approx. 1,600 - 2,000 kg (3,527 - 4,410 lbs) Max Gross Weight: Subject to manufacturer's specification, likely around 5,000 kg (11,023 lbs). 🛡️ Safety Features Ratings Rollover Protection: ROPS (Roll-Over Protective Structure) may be an optional or standard fitment depending on...