🏷️ Basic Information Identification Make: Allis-Chalmers Model: Model C Product Type: Service Repair Manual 👋 Introduction Market Position Target Audience: Tractor owners, mechanics, collectors, restoration enthusiasts Key Features Manual Value: Essential for maintaining and repairing the classic Allis-Chalmers Model C tractor 📋 Manual Details Coverage Areas Primary Coverage: Allis-Chalmers Model C Tractor Page Count Estimated Pages: 200-300 Manual Type Type: Factory Service/Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, cylinder head, block, crankshaft, camshaft, pistons, rings, lubrication system, cooling system Fuel System: Carburetor (Marvel-Schebler TSX series), fuel pump, fuel tank, lines Ignition System: Distributor, ignition coil, spark plugs, wiring Transmission: Gearbox, clutch, PTO (Power Take-Off) drive Rear Axle And Final Drive: Differential, axle shafts, reduction gears Hydraulic System: Hydraulic pump, control valve, lift arms, reservoir, hydraulic oil specifications Steering System: Steering box, linkage, adjustments Braking System: Brake shoe adjustment, brake drum service Electrical System: Wiring diagrams, battery, starter, generator, lighting Chassis And Frame: Frame inspection, front axle components Operating Controls: Dashboard layout, lever functions Procedures Included Routine Maintenance: Lubrication points, oil changes, filter replacements, greasing schedule Engine Repair: Complete engine rebuild, valve adjustment, piston replacement, bearing checks Transmission Repair: Clutch replacement, gearbox disassembly and reassembly, PTO engagement adjustment Hydraulic System Service: Hydraulic pump testing and repair, control valve calibration, cylinder seal replacement Troubleshooting: Diagnostic procedures for common problems, symptom-based troubleshooting guides Adjustment Procedures: Carburetor tuning, brake adjustment, clutch pedal free play, PTO engagement Special Tools: Identification of specific tools required for repairs Technical Depth Depth: Comprehensive, from basic maintenance to full engine and transmission overhaul 📊 Manual Specifications File Format Digital Format: High-resolution PDF, searchable text, printable pages Print Quality Image Quality: Clear diagrams, illustrations, and photographs Binding Type Binding: N/A (Digital) Paper Type Paper Quality: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Model: Allis-Chalmers Model C Engine (often referred to by its displacement or bore/stroke) Engine Type: 4-cylinder, L-head (flathead) gasoline Bore: 3.25 inches (82.55 mm) Stroke: 3.75 inches (95.25 mm) Displacement: 125.1 cubic inches (2.05 liters) Performance Horsepower Rated: Approximately 30-35 belt horsepower Torque Rated: Approximate specifications available in manual Fuel System Carburetor Type: Marvel-Schebler TSX Series (e.g., TSX-153, TSX-239 variants) Fuel Type: Gasoline Fuel Tank Capacity: Approximately 12 gallons Lubrication System Oil Type: Refer to manual for specific viscosity grades (e.g., SAE 30 or SAE 10W-30 depending on temperature) Oil Capacity: Approximately 5 quarts (with filter) Cooling System Cooling Method: Water-cooled, thermosiphon with fan assist Ignition System Ignition Timing: Specifications provided in manual Spark Plug Gap: Specifications provided in manual (typically around 0.025" to 0.035") 🔧 Transmission Standard Transmission Type: 4-speed manual transmission Clutch Type: Single-plate dry clutch Optional Pto: Standard Power Take-Off (PTO) unit Features Gear Ratios: Detailed gear ratios for each speed are listed in the manual Fluid Type Transmission Oil: Refer to manual for specific gear oil grades (e.g., SAE 90 GL-4) 📐 Dimensions Exterior Wheelbase: Approximately 74 inches Overall Length: Approximately 120 inches (without implements) Overall Width: Approximately 65 inches (at rear wheels, tread adjustable) Weights Operating Weight: Approximately 2,800 - 3,200 lbs 🛡️ Safety Features Ratings Safety Standards Era: Tractor safety standards of the 1940s-1950s; modern safety features not present Passive Features Operator Protection: Basic operator station; ROPS (Roll-Over Protective Structure) not standard 💡 Technology Features Infotainment Features: N/A (basic mechanical operation) 🔧 Maintenance Service Intervals Engine Oil Change: Every 40-50 operating hours or annually Greasing: Daily or before each use at all specified grease points Air Cleaner Service: As needed based on operating conditions, daily inspection recommended Coolant Flush: Annually or as needed Fluid Specifications Hydraulic Fluid Type: Refer to manual for specific API GL-4 rated tractor hydraulic fluid or equivalent Hydraulic Fluid Capacity: Approximately 3.5 gallons (transmission/hydraulic sump) Known Issues Common Wear Points: Clutch wear, PTO shaft wear, hydraulic pump output decline, carburetor sealing issues Engine Problems: Valve seat wear, potential for oil consumption in high-hour engines Transmission Problems: Bearing wear, synchronization issues in some gears, PTO engagement stiffness 📚 Vehicle History Brand Heritage Manufacturer: Allis-Chalmers Manufacturing Company Model Evolution Introduction Year: 1940 Production End Year: 1957 (replaced by the D-series) Production Manufacturing Location: United States (primarily Milwaukee, Wisconsin) Production Volume: Significant, one of Allis-Chalmers' most popular tractors 🏆 Awards & Recognition Recognitions Historical Significance: Highly regarded as a workhorse tractor of its era, contributing significantly to mechanized agriculture.