🏷️ Basic Information Identification Make: Allis-Chalmers Model: D-19 Model Variant: D-19 Diesel Codes Chassis Code: Not specified in product data Generation Production Period: 1959-1961 👋 Introduction Market Position Tractor Segment: Mid-size row-crop tractor, popular in its era for general farming applications, offering a good balance of power and maneuverability. Competitive Analysis Competitors: Competed with models from John Deere (e.g., 4010/4020 series), IH (e.g., McCormick Farmall 460/560), Massey Ferguson (e.g., 35/65 series), and Ford (e.g., 4000/5000 series). Key Features Features: Robust diesel engine, versatile hydraulic system (often with Category II hitch), optional live PTO, power steering availability, and a comfortable operator station for its time. 📋 Manual Details Coverage Areas Covered Systems: Engine overhaul, transmission, hydraulics, electrical system, steering, brakes, chassis, body, maintenance schedules, troubleshooting. Page Count Estimated Pages: High (typically 300-500 pages for comprehensive tractor manuals) Manual Type Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain: Complete engine disassembly, inspection, repair, and reassembly; clutch, transmission (gearbox and PTO), final drives, differential. Hydraulics: Hydraulic pump, control valve, lift arms, external hydraulic connections, cylinder repairs, troubleshooting hydraulic system. Electrical: Wiring diagrams, starter, generator/alternator, battery system, lighting, ignition system, instrument panel. Steering And Brakes: Steering mechanism (manual and power assist if applicable), brake system components, adjustments, and repairs. Chassis And Body: Frame, axles, drawbar, fenders, operator's platform, sheet metal repairs, mounting procedures for implements. Procedures Included Maintenance: Routine service, lubrication points and schedules, fluid level checks, filter replacement, tune-up procedures. Troubleshooting: Systematic diagnostic procedures for common problems encountered with engine, transmission, hydraulics, and electrical systems. Repair: Detailed step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation. Adjustments: Clutch pedal, brake pedal, governor, ignition timing, hydraulic controls, PTO engagement. Technical Depth Depth: Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds, including detailed torque specifications and clearance measurements. 📊 Manual Specifications File Format File Type: Digital PDF Searchability: Likely searchable text content, enabling quick access to specific information. Print Quality Quality: Variable, dependent on the source scan quality. Expect clear diagrams and text. Binding Type Binding: N/A (Digital Format) Paper Type Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Model: Allis-Chalmers 2500 Series Diesel (e.g., 251-4B or similar) Engine Type: Inline 4-cylinder, naturally aspirated diesel Displacement: Approximately 250-260 cubic inches (4.1-4.3 Liters) Bore X Stroke: Typically around 3.875" x 4.33" (98.4 mm x 110 mm) Performance Horsepower Rated: Approximately 50-60 PTO horsepower, with a drawbar HP around 40-45. Torque Peak: Not readily available in product description, but expected to be in the 150-180 lb-ft range at ~1400 RPM. Fuel System Fuel Injection: Roosa Master or similar distributor-type injection pump. Fuel Type: Diesel Fuel Fuel Filter: Spin-on or cartridge type, specific part number varies by replacement supplier. Cooling System Cooling Type: Liquid-cooled (water pump driven by engine) Lubrication Oil Type: API CD or CE rated diesel engine oil (e.g., 15W-40 or 20W-50 depending on climate and engine condition). Oil Capacity: Approximately 7-8 quarts (US) including filter. 🔧 Transmission Standard Transmission Type: Constant mesh, sliding gear transmission. Number Of Gears: Typically 6 forward speeds and 2 reverse speeds. Features Pto: Live PTO (Power Take-Off) was often an option, allowing the PTO to operate independently of the transmission clutch. Clutch: Dual-stage clutch (one for transmission, one for PTO if equipped). Fluid Specifications Transmission Oil: API GL-4 rated gear oil, e.g., 80W-90 or 85W-140 depending on operating temperature. Some systems may use Universal Tractor Transmission Oil (UTTO). Transmission Oil Capacity: Approximately 20-25 quarts (US) for the main gearbox and rear end. 📐 Dimensions Exterior Wheelbase: Approximately 85-90 inches (2160-2286 mm) Length: Approximately 130-140 inches (3302-3556 mm) without implements. Width At Rear Axle: Adjustable, typically ranging from 60-80 inches (1524-2032 mm). Ground Clearance: Approximately 15-20 inches (381-508 mm) depending on tire size and axle configuration. Weights Shipping Weight: Around 4,000 - 4,500 lbs (1814 - 2041 kg) Operating Weight: Approximately 4,500 - 5,000 lbs (2041 - 2268 kg) with fluids and operator. Max Ballasted Weight: Can exceed 7,000 lbs (3175 kg) with wheel weights and fluid-filled tires for traction. 🛡️ Safety Features Ratings Safety Features: ROPS (Roll Over Protection System) was not standard equipment for this era but could be fitted as an aftermarket accessory. Seat belts were also not standard. Active Features Brakes: Mechanical drum brakes on rear wheels, often operated by linked pedals or independently for steering assistance. Parking brake mechanism. Passive Features Operator Station: Open station design with basic controls. Fenders provide some protection. Foot platform. 💡 Technology Features Infotainment Infotainment System: N/A - This is a vintage tractor; no modern infotainment systems are present. Driver Assistance Driver Assistance Features: N/A - Focus is on mechanical operation, not electronic driver aids. Connectivity Connectivity Features: N/A - Mechanical and electrical systems only. 🔧 Maintenance Service Intervals Engine Oil Change: Every...