🏷️ Basic Information Identification Make: McCormick-Deering Model: 10-20 & 15-30 Type: Tractor Generation Primary Generation: Pre-War (1920s-1930s) Codes Historical Series: Farmall International 👋 Introduction Market Position Target Audience: Owners, restorers, and mechanics working on McCormick-Deering 10-20 and 15-30 tractors. Competitive Analysis Value Proposition: Provides comprehensive, detailed information essential for in-depth repair and restoration, aiming for 100% customer satisfaction. Key Features Manual Strengths: Exceptional detail in repair procedures, clarity of illustrations, and integrated electrical system coverage. Customer Focus Sales Philosophy: Prioritizes client respect and customer loyalty through high-quality documentation and service. 📋 Manual Details Coverage Areas Primary Focus: Overhaul, Repair, Maintenance, Refurbishment, Restoration Diagnostic Coverage: Comprehensive diagnostic and repair procedures Electrical Coverage: Electrical system diagnostics, troubleshooting, and service procedures with detailed wiring diagrams Page Count Estimated Pages: Undisclosed (likely substantial given depth of coverage) Manual Type Type: Overhaul Manual / Service Manual / Repair Manual Scope: Comprehensive guide for complete restoration and repair, not a simplified user manual. Language Primary Language: English Format Delivery Format: Print (implied by sales business focus and description) 📖 Manual Coverage Systems Covered Major Systems: Body, Frame & Mounting, Engine, Suspension, Driveline, Brake Systems, Transmission/Transaxle, Clutch, Chains, Exhaust, Fuel, Steering, Shocks, Instrumentation & Warning Systems, Battery & Charging Systems, Lighting, Electrical Distribution, Wiring Engine Specific: Detailed engine repair and overhaul Climate Control: Mentioned as a typical inclusion, likely relevant to cabin heating/cooling if equipped. Power Take Off: PTO system maintenance and repair (if equipped). Cooling System: Radiator, water pump, and thermostat service. Procedures Included Repair Procedures: Detailed substeps, numbered instructions, bold figure numbers for illustration matching Maintenance Procedures: All necessary maintenance procedures covered Troubleshooting: Dedicated troubleshooting section for common and electrical issues Adjustments: Valve adjustments, ignition timing adjustments, carburetor adjustments. Technical Depth Rebuild Capability: Full rebuild and refurbishment procedures User Accessibility: Suitable for DIY mechanics and professional repair personnel Rebuild Specifics: Covers dismantling, inspection, measurement, and reassembly of all major components. Illustrations Visual Guidance: Detailed illustrations, drawings, and photos; enlarged inset views for detailed part examination Illustration Types: Exploded views, circuit diagrams, assembly drawings. 📊 Manual Specifications File Format Digital Format: Not specified, presumed print for sales. Print Quality Illustration Clarity: High quality with detailed illustrations and photos Binding Type Binding: Professional binding (assumed for durability in a workshop setting) Paper Type Paper Quality: Durable paper suitable for workshop environments (assumed) Organization Table Of Contents: Numbered table of contents for easy navigation ⚙️ Engine Specifications Primary Engine Engine Type 10-20: 4-cylinder, L-head, gasoline (typically) Engine Type 15-30: 4-cylinder, L-head, gasoline (typically) Performance Bore Stroke 10-20: Approx. 3.875" x 5.5" (98.4mm x 140mm) Displacement 10-20: Approx. 247.6 cu. in. (4.06 L) Bore Stroke 15-30: Approx. 4.25" x 6.5" (108mm x 165mm) Displacement 15-30: Approx. 370.6 cu. in. (6.07 L) Horsepower 10-20: Approx. 20 belt HP / 10 drawbar HP Horsepower 15-30: Approx. 30 belt HP / 15 drawbar HP Torque 10-20: Approx. 55-60 lb-ft at rated RPM (estimate) Torque 15-30: Approx. 80-90 lb-ft at rated RPM (estimate) Fuel System Carburetion: Typically updraft carburetor (e.g., Marvel-Schebler, Zenith) Ignition: Magneto ignition (e.g., Wico, Bosch) Lubrication Oil System: Splash lubrication with oil pump for main bearings 🔧 Transmission Standard Gearbox Type: Sliding gear, constant mesh transmission Features Number Of Speeds: Typically 3 forward speeds and 1 reverse speed. Clutch Type: Dry, single-plate clutch Final Drive: Gear drive with spur gears 📐 Dimensions Exterior Wheelbase 10-20: Approx. 76 inches (1930 mm) Wheelbase 15-30: Approx. 83 inches (2108 mm) Weights Shipping Weight 10-20: Approx. 3,500 lbs (1588 kg) Shipping Weight 15-30: Approx. 4,800 lbs (2177 kg) 💡 Technology Features Infotainment Audio System: Not applicable (pre-modern infotainment era). Driver Assistance Safety Features: Basic mechanical brakes, steering. No electronic driver aids. Connectivity Communication: Not applicable. 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 50-100 operating hours or annually (refer to specific manual for precise intervals). Grease Points: Daily or weekly lubrication of all grease fittings (bearings, linkages) is critical. Fluid Specifications Engine Oil Type: SAE 30 or SAE 10W-30 HD (Heavy Duty) oil, depending on climate. Modern equivalents might be used if API rated appropriately. Transmission Oil Type: EP (Extreme Pressure) Gear Lubricant, SAE 90 Coolant Type: Water (used in non-freezing climates), or a mix with antifreeze if applicable. Hydraulic Fluid: If equipped with a hydraulic system, specific IH hydraulic fluid or equivalent. Known Issues Common Wear Items: Piston rings, bearings, clutch plates, carburetor wear, magneto points, and worn gears in the transmission are common. Electrical System Concerns: Wiring degradation, magneto issues, and starter motor (if electric start equipped) can be problematic due to age. Carburetor Performance: Tuning and maintenance of updraft carburetors for optimal fuel mixture are crucial. 📚 Vehicle History Brand Heritage Manufacturer: International Harvester Company (McCormick-Deering was a brand of IH). Model Evolution Development: The 10-20 and 15-30 represented significant advancements in tractor technology for their time, transitioning agriculture towards...