🏷️ Basic Information Identification Make: Chevrolet Model: Superior Model Variant: Chevy Year: 1923-1926 Codes Product Code: CHEV-1923-26-WIRING 👋 Introduction Market Position Target Audience: Owners, restorers, mechanics specializing in vintage Chevrolet vehicles. Key Features Essential Tool: Indispensable for diagnosing and repairing any electrical issue on these early Chevrolet models. Restoration Aid: Crucial for accurate wiring harness reconstruction and electrical system verification during restoration projects. 📋 Manual Details Coverage Areas Primary Focus: Electrical System Wiring Diagrams Included Models: All Chevrolet Superior models (Series AA, AB, AC, AD) Page Count Estimated Page Count: 50-75 Manual Type Type: Wiring Diagram Manual / Electrical Service Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Electrical Components: Ignition system, lighting (headlights, taillights, cowl lights, dome light), starting system, charging system (generator, battery), horn, fuel gauge, oil pressure gauge, ammeter, switches, wiring harnesses, fuse/circuit breaker locations. Procedures Included Troubleshooting: Diagnosis of electrical faults, testing of components, identification of wiring issues, interpretation of circuit diagrams. Repair Guidance: Guidance on wire splicing, terminal replacement, component replacement specific to electrical systems. Technical Depth Depth: Detailed circuit diagrams, component identification, wire color codes, terminal identification, and connection points. Focuses on understanding and repairing the electrical system's integrity. 📊 Manual Specifications File Format Digital Format: Searchable PDF Print Quality Scan Quality: High-resolution scans of original diagrams, ensuring clarity of lines and text. Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-Cylinder (Overhead Valve) Displacement: Approximately 171 cubic inches (2.8 liters) Performance Horsepower: Approx. 20-28 HP (depending on year and specific tune) Fuel System Carburetor: Single Barrel Carburetor (e.g., Zenith, Stromberg) Ignition System Ignition Type: Battery and Coil Ignition with Distributor 🔧 Transmission Standard Transmission Type: 3-Speed Manual Transmission Features Gearbox Design: Sliding gear type, center shift (in later models), sometimes floor shift. 📐 Dimensions Exterior Wheelbase: Approximately 103 inches to 113 inches (depending on body style and year) Weights Curb Weight: Approx. 2,000 - 2,500 lbs (depending on body style) 🛡️ Safety Features Ratings Safety Standards: Pre-NHTSA era; safety features are rudimentary by modern standards. Active Features Braking System: Mechanical Drum Brakes on all four wheels (later models may have improved mechanical linkage). Passive Features Lighting System: Inadequate by modern standards, typically incandescent bulbs. Diagram clarity is crucial for ensuring functionality. 💡 Technology Features Infotainment Radio: Optional AM Radio (often a dealer installed accessory, separate wiring diagram may be needed for specific installations). Driver Assistance Driver Aids: None by modern definition. Turn signals were not standard, often hand signals or aftermarket additions. Connectivity Connectivity Features: N/A 🔧 Maintenance Service Intervals Tune Up: Recommended every 2,000-3,000 miles or annually. This includes ignition timing, spark plug gap, carburetor adjustment. Wiring inspection is vital during tune-ups. Fluid Specifications Engine Oil: SAE 20W or SAE 30 (non-detergent) depending on ambient temperature. Capacity approx. 4 quarts. Transmission Oil: SAE 90 Gear Oil. Capacity approx. 2 quarts. Brake Fluid: N/A (Mechanical Brakes - lubrication for linkages). Coolant: Water (traditional), or water with anti-corrosion additive. Antifreeze use is debated for older engines but essential in freezing climates. Known Issues Electrical Reliability: Deterioration of fabric-wrapped wiring insulation, brittle insulation, loose connections, generator output issues, starter motor problems. This manual is key to addressing these. Ignition System: Worn distributor points, condensers, spark plug wear, coil failure. Accurate wiring ensures proper signal flow. Component Replacement Wiring Harness: Replacement requires careful replication of original layouts and connections as per the diagrams. Color coding is critical. 📚 Vehicle History Brand Heritage Chevrolet Legacy: Chevrolet was established as a value-oriented marque by General Motors, offering reliable transportation. Model Evolution Superior Series: The 'Superior' designation encompassed various body styles (Touring, Coach, Coupe, Sedan) and saw incremental updates through the mid-1920s, including engine refinements and styling changes. Production Production Period: 1917-1927 (Superior series dates). Manufacturing Location: United States (various GM plants) 🏆 Awards & Recognition Recognitions Historical Significance: The Chevrolet Superior series was a popular and significant model in the early automotive industry, contributing to GM's market dominance.