🏷️ Basic Information Identification Make: Mercedes-Benz Model: 220a, 220S, 220SE Codes Chassis Codes: W180 (220a, 220S), W128 (220S, 220SE) 👋 Introduction Market Position Historical Context: These models represented Mercedes-Benz's move towards more spacious and refined mid-size sedans in the post-war era, bridging the gap between the smaller Pontons and the larger luxury sedans. Target Audience: Enthusiasts and owners of classic Mercedes-Benz sedans seeking to perform maintenance, restoration, or repairs themselves. Competitive Analysis Segment: Mid-size luxury sedan (at the time of production). Competitors: Competed with models from Jaguar, Rover, and other European luxury manufacturers. Key Features Vehicle Attributes: Robust construction, comfortable ride, reliable inline-six engines, and the hallmark Mercedes-Benz build quality and engineering. Manual Value Proposition: Provides the essential technical knowledge for maintaining and repairing these classic vehicles, crucial for preserving their value and operability. 📋 Manual Details Coverage Areas Engines Covered: M180 (2.2L Inline-6), M127 (2.2L Inline-6) Page Count Estimated Pages: 300-500 (typical for comprehensive factory service manuals) Manual Type Type: Service and Repair Manual Language Language: English (assumed based on product title context for a global market) Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine disassembly, inspection, repair, assembly, timing, valve adjustments, torque specifications. Engine Management: Ignition system (distributor, points, coil, spark plugs), fuel system (carburetor or injection specifics for SE models), cooling system. Transmission: Manual transmission (4-speed and optional 4-speed with overdrive) removal, disassembly, inspection, repair, and reassembly. Automatic transmission (optional Hydrak) details may be included. Drivetrain: Clutch, driveshaft, rear axle (differential, half-shafts) service and repair. Brakes: Hydraulic system (master cylinder, wheel cylinders, brake lines, hoses), drum brake service (shoe replacement, drum machining), parking brake. Suspension: Front independent suspension (double wishbone, coil springs), rear semi-independent suspension (swing axles), shock absorbers, steering linkage service. Steering: Steering box, steering column, tie rods, idler arm service. Electrical: Wiring diagrams, starter, alternator/generator, battery, lighting, instrumentation, horn, wipers, and associated component testing and repair. Body And Chassis: Frame inspection, body panel removal/installation, doors, windows, locks, trim, and interior component service. Heating And Ventilation: Heater core service, ducting, fan operation. Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication, spark plug checks, ignition timing, carburetor adjustments, brake fluid changes, coolant flushes. Diagnostic Troubleshooting: Step-by-step guides for identifying and resolving common operational issues across all major systems. Component Rebuilds: Detailed instructions for overhauling engines, transmissions, carburetors, brake cylinders, and steering boxes. Adjustments And Settings: Precise procedures for setting valve clearances, ignition timing, idle speed, and carburetor mixtures. Special Tool Identification: Listing and description of specialized tools required for specific repairs. Technical Depth Depth: Comprehensive, covering everything from basic owner maintenance to full engine and drivetrain rebuilds. Detail Level: Factory-level detail with exploded diagrams, torque specifications, and clearance measurements. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable if it's a quality scan of an original manual. Printability: Printable, allowing for physical copies of specific sections or the entire manual. Print Quality Image Resolution: High-resolution scans are crucial for clarity of diagrams and text. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Quality: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Type 220A: M180, 2.2L (2195cc) Naturally Aspirated Inline-6 Engine Type 220S: M180, 2.2L (2195cc) Naturally Aspirated Inline-6 (with increased power over 220a) Engine Type 220Se: M127, 2.2L (2195cc) Fuel-Injected Inline-6 (Bosch mechanical injection) Performance Horsepower 220A: Approx. 80 hp @ 4600 rpm Horsepower 220S: Approx. 100 hp @ 4800 rpm Horsepower 220Se: Approx. 115 hp @ 4800 rpm Torque 220S: Approx. 120 lb-ft @ 2700 rpm Torque 220Se: Approx. 130 lb-ft @ 3000 rpm Fuel System Fuel System 220A 220S: Single Solex or Zenith downdraft carburetor Fuel System 220Se: Bosch Mechanical Fuel Injection (MFI) Fuel Type: Premium Unleaded Gasoline General Bore Stroke: 82 mm x 72.8 mm Compression Ratio 220A 220S: Approx. 7.0:1 Compression Ratio 220Se: Approx. 8.0:1 🔧 Transmission Standard Transmission Type Standard: 4-speed Manual Transmission Optional Transmission Type Optional: 4-speed Manual with Overdrive, Hydrak Automatic Clutch/Transmission (less common, highly desirable) Features Clutch Type: Single dry plate (manual) Gear Ratios: Specific ratios provided within the manual for each transmission variant. 📐 Dimensions Exterior Wheelbase: Approx. 106.3 inches (2700 mm) Length: Approx. 185.4 inches (4710 mm) Width: Approx. 69.3 inches (1760 mm) Height: Approx. 59.1 inches (1500 mm) Weights Curb Weight: Approx. 3000-3300 lbs (1360-1500 kg), depending on model and equipment. Gross Vehicle Weight: Typically around 4000-4300 lbs (1815-1950 kg). 🛡️ Safety Features Ratings Crash Test Data: No formal modern crash test data available for these vintage vehicles. Active Features Braking System: Four-wheel hydraulic drum brakes. Steering System: Recirculating ball steering, typically unassisted. Passive Features Seatbelts: Optional or not standard depending on early production years and market. Body Structure: Unit-body construction providing reasonable crash protection for its era. 💡 Technology Features Infotainment Radio: Optional factory AM radio; many cars have been updated with aftermarket units. Driver...