🏷️ Basic Information Identification Make: Mercedes-Benz Model Series: W114 / W115 Model Designations: 220, 230, 240, 250, 280, 300 Production Years Covered: 1968-1972 Codes Chassis Code: W114 (coupe/sedan - longer wheelbase), W115 (sedan - shorter wheelbase) 👋 Introduction Market Position Segment: Luxury Compact to Mid-size Executive Cars Target Audience: Discerning buyers valuing build quality, engineering, and comfort Competitive Analysis Key Competitors: BMW Neue Klasse (e.g., 1500-2000), Audi 100, Volvo 140 Series, Jaguar XJ6 Key Features Design Philosophy: Robust engineering, timeless styling, emphasis on safety and comfort Powertrain Options: Range of inline-four and inline-six petrol engines, and reliable diesel engines 📋 Manual Details Coverage Areas Geographical Coverage: Global (factory specifications and procedures) Market Segment: Luxury Compact/Mid-size Sedan and Coupe Page Count Estimated Pages: Hundreds (as stated in product description) Manual Type Type: Factory Service Repair Workshop Manual Language Primary Language: English (implied by typical workshop manual distribution) Format Digital Format: PDF Download Accessibility: Downloadable to computer, tablet, or smartphone Usage Rights Licensing: Lifetime use, no expiry, unlimited installations Printing Print Capability: Printable (single pages or entire manual) 📖 Manual Coverage Systems Covered Engine: All gasoline and diesel variants (e.g., M180, M130, OM601, OM615, OM616, OM617 families) Transmission: Manual and automatic transmissions Drivetrain: Rear-wheel drive, driveshafts, differential Suspension: Front independent suspension (double wishbone), rear independent suspension (swing axle) Steering: Power steering systems Brakes: Hydraulic braking system (disc front, drum rear; potential for rear discs on some models) Electrical: 12V electrical system, battery, alternator, starter, ignition system, lighting, gauges Fuel System: Carburetor and fuel injection systems (Bosch D-Jetronic on some models) Cooling System: Radiator, fan, thermostat, water pump Exhaust System: Exhaust manifolds, pipes, mufflers Body And Chassis: Body construction, frame, doors, panels, interior trim Climate Control: Heating and ventilation systems Procedures Included Maintenance: Routine servicing, oil changes, filter replacements, lubrication Troubleshooting: Diagnostic procedures for all systems, common faults Repair: Detailed step-by-step repair instructions for all major components Rebuilds: Engine and transmission overhaul procedures Diagnosis: Electrical system diagnostics, fuel system diagnostics Adjustment: Carburetor tuning, ignition timing, valve adjustments Disassembly And Assembly: Component removal and installation Wiring Diagrams: Comprehensive electrical wiring schematics Technical Depth Level Of Detail: Professional-grade, comprehensive factory specifications and procedures Content Type: Detailed photos, diagrams, exploded views, specifications 📊 Manual Specifications File Format Digital Format: PDF Searchability: Likely searchable text within PDF (standard for professional manuals) Print Quality Print Resolution: High-quality (implied by inclusion of photos and diagrams) Binding Type Physical Binding: N/A (Digital Download) Paper Type Physical Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Families: M180 (inline-6), M130 (inline-6), OM601/615/616/617 (inline-4/5 diesel) Engine Variants Displacement Examples: 2.2L, 2.3L, 2.4L, 2.5L, 2.8L, 3.0L Performance Horsepower Range Approx: 70 hp (diesel) to 160 hp (premium petrol) Torque Range Approx: 100 lb-ft (diesel) to 170 lb-ft (premium petrol) Fuel System Carburetor Types: Solex twin-choke carburetors common on petrol models Injection Systems: Bosch D-Jetronic for some higher-performance variants Engine Construction Block Material: Cast Iron Cylinder Head Material: Aluminum Alloy 🔧 Transmission Standard Type: 4-speed Manual (common) Optional Type: 3-speed or 4-speed Automatic (optional, Mercedes-Benz 'Hydrak' on early models) Features Clutch: Single dry plate (manual) Automatic Features: Torque converter, floor or column shift 📐 Dimensions Exterior Wheelbase W114: Approx. 2750 mm (108.3 in) Wheelbase W115: Approx. 2720 mm (107.1 in) Length Approx: 4710-4770 mm (185.4-187.8 in) Width Approx: 1750-1780 mm (68.9-70.1 in) Height Approx: 1420-1450 mm (55.9-57.1 in) Weights Curb Weight Range: Approx. 1300-1500 kg (2866-3307 lbs) Gross Weight Rating Approx: Approx. 1850-2000 kg (4078-4409 lbs) 🛡️ Safety Features Ratings Crash Test Data: N/A (Modern crash test ratings did not exist for this era) Active Features Braking System: Dual-circuit hydraulic brakes, front discs, rear drums Passive Features Body Construction: Integrated safety cell, crumple zones Steering Column: Collapsible steering column Windshield: Laminated safety glass 💡 Technology Features Infotainment Radio: Optional period-correct AM/FM radio, potentially with cassette player Driver Assistance ABS: Not standard; possibly available as an option on very late models or specific trims Cruise Control: Optional on some higher-spec models Connectivity Modern Features: None (designed for a pre-digital automotive era) 🔧 Maintenance Service Intervals Oil Change Interval: Typically 5,000 - 10,000 km (3,000 - 6,000 miles) or annually Tune Up Interval: Every 10,000 - 20,000 km (6,000 - 12,000 miles) Fluid Specifications Engine Oil Viscosity Examples: SAE 10W-40 or 10W-30 (depending on climate and engine type) Coolant Type: Ethylene glycol based antifreeze/coolant Brake Fluid Type: DOT 3 or DOT 4 Automatic Transmission Fluid: Dexron II (or equivalent specification) Known Issues Common Wear Items: Ball joints, tie rod ends, engine mounts, fuel lines (aged rubber), exhaust components Diesel Specific Issues: Glow plug system reliability, injector pump maintenance Petrol Specific Issues: Carburetor tuning and wear, ignition points and condenser maintenance Electrical Issues: Wiring harness degradation over time, alternator brushes, starter solenoid 📚 Vehicle History Brand Heritage Mercedes Benz Legacy: Pioneering automotive manufacturer with a long...