🏷️ Basic Information Identification Make: Allis-Chalmers Model: WD Model Nickname: WD Vehicle Type: Tractor 👋 Introduction Market Position Target Audience: Professional technicians and experienced DIY mechanics Competitive Analysis Comparison To Factory Manuals: Covers topics typically found in factory service and owner's manuals Key Features Learning Method: Step-by-step guidance, teaching factory-trained technician knowledge Availability: Instant Download Benefit To Owner: Enables informed decisions for maintenance and repair 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Maintenance Page Count Estimated Page Count: Likely 300-600 pages (typical for comprehensive service manuals) Manual Type Type: Service Repair Manual / Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Detailed overhaul, troubleshooting, timing, lubrication, cooling system Fuel System: Carburetor adjustments, fuel pump, fuel filter servicing Ignition System: Magneto servicing, spark plugs, timing Transmission: Clutch, gearbox, PTO (Power Take-Off) repair and adjustment Rear Axle And Final Drive: Differential, axle shafts, bearing service Hydraulics: Hydraulic lift system, pump, cylinder, valve body, fluid specifications Steering System: Linkages, tie rods, steering gearbox maintenance Brakes: Brake band adjustment, overhaul, hydraulic lines Electrical System: Wiring diagrams, lighting, starter, generator servicing Cooling System: Radiator, water pump, thermostat service Chassis And Frame: Frame inspection and repair Front Axle And Steering: Kingpins, spindle bushings, wheel alignment Procedures Included Maintenance: Regular service checks, lubrication points and schedules, filter changes Troubleshooting: Diagnostic charts for common problems and solutions Disassembly And Assembly: Step-by-step instructions for component removal and reinstallation Repair: Detailed instructions for repairing worn or damaged parts Cleaning And Reinstallation: Procedures for cleaning components and proper reassembly Adjustments: Carburetor, clutch, governor, brake adjustments Technical Depth Depth: Comprehensive, covering factory-level repair and maintenance 📊 Manual Specifications File Format File Format: PDF Print Quality Printability: Full Printable Zoom Capability: Yes Binding Type Binding Type: Digital Download (No physical binding) Paper Type Paper Type: Not Applicable (Digital) Requirements Software Requirements: Adobe PDF Reader, WinZip Compatibility Operating Systems: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: Allis-Chalmers Model G-156 Engine Configuration: 4-cylinder, gasoline Displacement: 226.2 cubic inches (3.7 liters) Bore X Stroke: 3.4375 in. x 4.125 in. Horsepower Rated: Approx. 35 PTO HP (actual varies by configuration and condition) Performance Governor Type: Centrifugal, mechanical Fuel System Carburetor Model: Marvel-Schebler TSX Fuel Type: Gasoline Ignition System Ignition Type: Magneto Ignition (e.g., Wico or Fairbanks-Morse) Lubrication Oil Capacity: 6 quarts (with filter) Cooling System Cooling Type: Water Cooled 🔧 Transmission Standard Transmission Type: Constant Mesh Gearbox Number Of Gears: 4 Forward, 1 Reverse Features Pto Type: Independent PTO (540 RPM standard) Clutch Type: Single Plate, Dry Clutch 📐 Dimensions Exterior Wheelbase: Approx. 76 inches Weights Shipping Weight: Approx. 4,300 lbs Operating Weight: Approx. 4,800 lbs (variable with options) 💡 Technology Features Infotainment Infotainment System: Not Applicable (Tractor of its era) Driver Assistance Driver Assistance Features: Not Applicable (Tractor of its era) 🔧 Maintenance Service Intervals Engine Oil Change: Every 50 operating hours or annually Transmission And Hydraulic Oil Change: Every 500 operating hours or annually Fluid Specifications Engine Oil Grade: SAE 30 or 20W-30 (depending on climate), API CD or higher recommended Hydraulic Fluid Type: Allis-Chalmers HD Transmission Fluid or equivalent (consult manual for specific type) Coolant Type: Ethylene Glycol based antifreeze mixed with water (50/50 ratio) Known Issues Common Wear Items: Clutch wear, hydraulic cylinder seals, PTO clutch packs, magneto points and condenser Engine Performance Issues: Carburetor gumming, valve seat wear, magneto timing drift 📚 Vehicle History Brand Heritage Brand Legacy: Allis-Chalmers, a significant American manufacturer of agricultural and industrial machinery Model Evolution Production Period: WD: 1948-1952. Preceded by the WC, succeeded by the WD45. Production Manufacturing Location: West Allis, Wisconsin, USA 🏆 Awards & Recognition Recognitions Industry Impact: The WD was a highly successful and popular tractor for Allis-Chalmers, known for its reliability and versatility.