🏷️ Basic Information Identification Make: Allis-Chalmers Model: D-21 Series II, 210, 220 Model Designation: Tractor Codes Manual Product Name: Allis Chalmers Tractor Model D-21 D-21 series II 210 220 WSM Service Manual Repair 👋 Introduction Market Position Target Audience: Allis-Chalmers tractor owners, mechanics, and restoration enthusiasts seeking comprehensive repair information. Key Features Ease Of Use: Easy to follow step-by-step instructions, with pictures and wiring diagrams to simplify repairs. Cost Savings: Enables owners to perform their own repairs, saving significant costs on labor and professional services. Knowledge Enhancement: Increases user knowledge about tractor mechanics, reducing reliance on external repair services. Competitive Analysis Market Context: Competed with tractors from manufacturers like John Deere, International Harvester, and Ford in the medium to high horsepower agricultural sector. 📋 Manual Details Coverage Areas Systems Covered: Engine, Fuel System, Cooling System, Lubrication System, Electrical System, Transmission, Clutch, Drive Train, Rear Axle, Steering System, Hydraulic System, Brakes, Power Take-Off (PTO), Front Axle, Chassis, Body, Wiring Diagrams, Troubleshooting Model Variants Covered: Specifically D-21, D-21 Series II, 210, and 220 models, indicating a broad scope within this tractor family. Page Count Estimated Page Count: Comprehensive (Specific number not provided in product information, but implied to be extensive) Manual Type Manual Type: Service Repair Manual (WSM - Workshop Service Manual) Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Maintenance And Repair: Detailed procedures for engine disassembly, assembly, troubleshooting, and component replacement. Fuel System Service: Includes carburetor, fuel pump, fuel lines, and filter service and adjustment. Cooling System Diagnostics: Radiator, fan, water pump, and thermostat service and repair. Lubrication System Maintenance: Oil filter, oil pump, and lubrication points for engine and drivetrain. Electrical System Troubleshooting: Starter, generator/alternator, battery, ignition system, lighting, and instrument panel. Transmission And Drivetrain: Clutch, gearbox, differential, and drive shafts overhaul and repair. Hydraulic System Operation And Repair: Hydraulic pump, cylinders, valves, and fluid specifications for implement operation. Brake System Maintenance: Brake pedal, linkage, and drum/disc brake service. Pto And Hitch Service: Power take-off operation and three-point hitch adjustments and repair. Front Axle And Steering: Service and repair for steering mechanisms, kingpins, and front wheel bearings. Rear Axle And Final Drives: Maintenance and overhaul of differential, final drives, and axle shafts. Chassis And Frame: Inspection and repair of the tractor frame, drawbar, and supporting structures. Bodywork And Sheet Metal: Procedures for maintenance, repair, and potentially painting of the tractor's body panels and cab (if applicable). Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication points, tune-ups, and inspection procedures. Major Repairs: Engine overhauls, transmission rebuilds, hydraulic system repairs, and component replacements. Troubleshooting Guide: Diagnostic steps for identifying and resolving common and uncommon operational issues. Wiring Diagrams: Detailed electrical schematics for all circuits and components. Troubleshooting Methodology: Systematic approach to diagnosing problems, often starting with the most common causes. Component Rebuilds: Detailed instructions for rebuilding major components like engines, transmissions, and hydraulic pumps. Technical Depth Depth Of Information: In-depth, professional quality, covering all areas of repair and service. Diagnostic Capabilities: Covers diagnostic procedures for engine performance, hydraulic system function, and electrical issues. Specifications And Tolerances: Includes detailed torque specifications, clearances, and wear tolerances for various components. 📊 Manual Specifications File Format File Format Details: PDF (Portable Document Format) Print Quality Printability: Full printable pages, allowing users to print only necessary sections for workshop use. Digital Organization: Searchable text within the PDF for quick access to specific information. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Delivery Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader (or compatible PDF viewer) Device Compatibility: Compatible with any device capable of opening PDF files. Compatibility Operating System Compatibility: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: Diesel (Specific engine model not provided in product info, but typically Perkins or Allis-Chalmers built) Engine Manufacturer: Likely Allis-Chalmers or Perkins (common for this era and size). Performance Horsepower Range: Estimated range of 70-85 PTO horsepower for D-21 and similar models, exact specs dependent on specific engine variant. Fuel System Fuel Type: Diesel 🔧 Transmission Standard Transmission Type: Manual Synchromesh (Specific number of gears and options vary by sub-model and year) Features Transmission Features: Likely featured a multi-speed gearbox, potentially with range selection for road and field operation. 📐 Dimensions Exterior Wheelbase: Typical for this class of tractor, specific measurements would be in the manual. Weights Operating Weight: Estimated around 7,000-9,000 lbs (3,175-4,082 kg) depending on configuration. 💡 Technology Features Infotainment Infotainment System: N/A (Tractors of this era did not feature modern infotainment systems.) Driver Assistance Driver Assistance Features: N/A (Basic mechanical controls were standard.) 🔧 Maintenance Service Intervals Engine Oil Change Interval: Typically every 100-250 operating hours or annually, depending on operating conditions (specifics in manual). Hydraulic Fluid Change Interval: Recommended at specified intervals, often annually or after a...