🏷️ Basic Information Identification Make: Allis-Chalmers Model: D-21 Model Variant: D-21 Series II Related Models: 210, 220 Product Type: Service Repair Manual 👋 Introduction Market Position Target Audience: Do-It-Yourself tractor owners, farm mechanics, and service technicians. Competitive Analysis Manual Completeness Claim: Claimed to be the 'most complete Service Repair Manual for the Allis Chalmers MODELS D-21, D-21 SERIES II, 210 and 220 Tractor ever compiled by mankind'. Key Features Value Proposition: Saves money on postage and packaging, provides instant access to comprehensive repair information. User Benefit: Empowers users to service and repair their tractor from front bumper to rear. 📋 Manual Details Coverage Areas Systems Covered: • Brakes • Clutch • Cooling System • Diesel Fuel System • Differential • Electrical System • Engine • Final Drive and Differential • Front System • Front Wheel Assist • Power Lift System • Power Steering • Power Take-Off (PTO) • Transmission (Front) • Transmission (Dual Range) Page Count Estimated Page Count: Extensive (Exact number not specified, described as 'most complete ever compiled') Manual Type Manual Type: Service Repair Manual Language Language: English Format File Format: PDF Download Method: Instant Download Compatibility Software Requirements: Adobe PDF Reader, WinZip Operating System Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Brake System Coverage: Detailed inspection, diagnosis, repair, and adjustment procedures for all brake components, including master cylinder, wheel cylinders, brake shoes, drums, and hydraulic lines. Clutch System Coverage: Comprehensive instructions for clutch inspection, adjustment, removal, and installation of clutch disc, pressure plate, release bearing, and flywheel. Cooling System Coverage: Procedures for radiator, water pump, thermostat, hoses, and fan maintenance, testing, and repair. Includes coolant specifications and flushing procedures. Diesel Fuel System Coverage: In-depth coverage of fuel injection pump, injectors, fuel filters, fuel lines, and fuel tank. Includes timing, calibration, and troubleshooting of diesel fuel delivery. Differential Coverage: Detailed service procedures for differential assembly, including inspection of gears, bearings, seals, and lubrication requirements. Electrical System Coverage: Wiring diagrams, component testing, troubleshooting of starter, alternator, battery, ignition system (if applicable), lighting, and instrumentation. Engine Coverage: Complete engine overhaul procedures, including cylinder head, pistons, rings, crankshaft, camshaft, valve train, and lubrication system service. Torque specifications and clearances provided. Final Drive And Differential Coverage: Detailed instructions for servicing final drive assemblies, axle shafts, and differential components. Includes bearing adjustments and lubrication. Front System Coverage: Service information for front axle components, steering linkages, and front end alignment specifications. Front Wheel Assist Coverage: Specific repair and maintenance procedures for the front-wheel drive system, if equipped. Power Lift System Coverage: Detailed service information for the tractor's hydraulic power lift system, including pump, control valve, cylinders, and linkage adjustments. Power Steering Coverage: Troubleshooting, repair, and adjustment procedures for the power steering system, including hydraulic pump, cylinder, and steering gear. Power Take Off Pto Coverage: Service instructions for the PTO engagement mechanism, shaft, and related components, including maintenance and repair. Transmission Front Coverage: Repair and maintenance procedures for the front section of the transmission, likely relating to power take-off or drive components. Transmission Dual Range Coverage: Detailed service and repair instructions for the dual-range transmission, including gear selection mechanisms, shifting, and internal component maintenance. Procedures Included Troubleshooting: Comprehensive diagnostic procedures for identifying and resolving common and uncommon issues across all covered systems. Repair Procedures: Step-by-step instructions for disassembly, repair, reassembly, and adjustment of all major components and systems. Maintenance Procedures: Guidance on routine maintenance tasks, fluid changes, lubrication, and inspections to ensure optimal performance and longevity. Technical Depth Diagnostic Capability: Advanced diagnostic techniques and troubleshooting guides for pinpointing faults. Rebuild Procedures: Complete rebuild instructions for major components such as the engine, transmission, and hydraulic systems. Diagrams And Illustrations: High-quality diagrams and illustrations to clarify complex procedures and component identification. 📊 Manual Specifications File Format File Quality: High Quality Printability: All pages are printable Searchability: Likely searchable due to PDF format, though not explicitly stated. Binding Type Binding Type: Digital (Downloadable PDF) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Manufacturer: Allis-Chalmers Engine Type: Diesel Engine Displacement: Exact displacement for D-21/210/220 not specified in product description, but typically a 6-cylinder diesel engine for this class of tractor. Performance Horsepower Range: Horsepower figures vary by specific model variant and year, but generally in the 70-90 PTO HP range for this era of Allis-Chalmers tractors. Fuel System Fuel Type: Diesel Injection System: Typically Roosa-Master or similar inline/rotary injection pumps for this era. 🔧 Transmission Standard Transmission Type: Manual transmission with dual-range capability. Optional Optional Transmission: Front-wheel assist was an option on some configurations. Features Gear Configuration: The manual specifically mentions 'Transmission (Front)' and 'Transmission (Dual Range)', indicating a multi-gearbox setup. 📐 Dimensions Exterior Tractor Chassis: Heavy-duty agricultural tractor chassis. Weights Operating Weight: Operating weight varies by configuration and equipment, typically in the 8,000-10,000 lbs range for tractors of...