🏷️ Basic Information Identification Make: Mercedes-Benz Model: 114 / 115 Series Chassis Codes: W114, W115 Generation Generation: First Generation (Neue Klasse) 👋 Introduction Market Position Segment: Mid-size luxury sedan and coupe. Target Audience: Discerning buyers seeking reliable, comfortable, and well-engineered premium vehicles. Essential for owners and independent workshops specializing in classic Mercedes-Benz vehicles. Competitive Analysis Competitors: BMW Neue Klasse (E3, E9), Audi 100, Jaguar XJ6, Rover P6. Key Features Vehicle Appeal: Solid build quality, advanced engineering for its time (e.g., independent suspension, disc brakes), sophisticated styling, comfortable ride, and reputation for longevity. Manual Value Proposition: Provides the definitive technical reference for maintaining and repairing these iconic Mercedes-Benz models, crucial for preserving their classic status and ensuring reliable operation. 📋 Manual Details Coverage Areas Coverage: Complete service, repair, and maintenance for Mercedes-Benz 114/115 series vehicles. Page Count Page Count: Extensive (typical comprehensive factory manuals for this era can range from 500 to over 1500 pages, depending on specific volume and scope). Manual Type Type: Factory Service/Workshop Manual Language Language: English (likely based on typical export market manuals, original may be German) Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, repair procedures, component overhauls, and specifications for all gasoline and diesel engines offered in the W114/W115 chassis. Transmission: Repair and maintenance of manual and automatic transmissions, including clutch, gearbox, torque converter, and related systems. Fuel System: Carburetor (Zenith, Solex) and fuel injection (Bosch K-Jetronic in later models) system diagnostics, repair, and tuning. Diesel injection pump and injector servicing. Electrical System: Wiring diagrams, troubleshooting guides, starter, alternator, battery, ignition system, lighting, instrumentation, and auxiliary electrical components. Suspension And Steering: Front and rear suspension systems (including independent front suspension, swing axle rear on early models, semi-trailing arm rear on later models), steering gear, power steering. Brakes: Hydraulic brake system, disc brakes (front and often rear), brake adjustments, fluid replacement, and troubleshooting. Manual Coverage Body And Chassis: Body repair, panel replacement, interior trim, glass, doors, locks, body sealing, and chassis component identification. Procedures Included Maintenance: Scheduled maintenance tasks, fluid changes (oil, coolant, brake fluid, transmission fluid), filter replacements, lubrication points, tune-up procedures. Repair: Step-by-step repair instructions for major and minor mechanical and electrical components, including engine rebuilds, transmission overhauls, brake system repairs, and electrical diagnostics. Troubleshooting: Diagnostic charts and procedures for identifying and resolving common and uncommon problems across all vehicle systems. Technical Depth Depth: Comprehensive factory-level detail suitable for professional technicians and advanced DIY mechanics. Includes torque specifications, clearances, timing settings, diagnostic values, and detailed illustrations. 📊 Manual Specifications File Format Quality: High-resolution PDF, ensuring clarity of text and diagrams. Typically searchable text for efficient information retrieval. Print Quality Printability: Designed to be printable, allowing users to create physical copies of specific sections or the entire manual. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Codes Gasoline: M114 (2.3L inline-6), M115 (2.0L inline-4), M116 (3.5L V8 - rare in W114/115 but possible conversions or specific markets). Engine Codes Diesel: OM615 (2.0L inline-4 diesel), OM616 (2.4L inline-4 diesel), OM617 (3.0L inline-5 diesel). Performance Horsepower Range: Approximately 90 hp (2.0L diesel) to 120 hp (2.3L gasoline) for standard variants. V8 variants could exceed 200 hp. Torque Range: Dependent on engine variant, typically ranging from 150 Nm to 190 Nm for common four and six-cylinder engines. Fuel System Gasoline Induction: Single or dual downdraft carburetors (Zenith, Solex) for most models. Later models and specific variants may feature Bosch D-Jetronic or K-Jetronic fuel injection. Diesel Injection: Bosch inline injection pumps and injectors. Technical Details Bore Stroke: Varies by engine; e.g., M115 2.0L: 87mm x 83.6mm; OM615 2.0L: 87mm x 83.6mm. Compression Ratio: Typical gasoline: 8.0:1 to 9.0:1. Typical diesel: 20:1 to 22:1. 🔧 Transmission Standard Transmission Type Standard: 4-speed or 5-speed manual transmission. Optional Transmission Type Optional: 4-speed automatic transmission (often referred to as 'Hydrak' or similar automatic units). Features Clutch Type: Single dry plate clutch for manual transmissions. Transmission Fluid Spec Manual: GL-4 Gear Oil (e.g., SAE 80 or 90, specific grade as per manual). Transmission Fluid Spec Automatic: Dexron II or equivalent automatic transmission fluid (ATF). 📐 Dimensions Exterior Body Styles: 4-door Sedan (Strich Acht), 2-door Coupe (Strich Acht Coupe), Long-wheelbase Sedan (e.g., 230 V for taxi/limousine service). Wheelbase: Standard: Approx. 2710 mm (106.7 in); Long wheelbase: Approx. 3150 mm (124.0 in). Weights Curb Weight: Approximately 1300 kg - 1500 kg (2866 lbs - 3307 lbs) depending on engine and body style. 🛡️ Safety Features Ratings Crash Test Era: Vehicles from this era predated standardized crash test ratings like NCAP. Safety features were built according to Mercedes-Benz's stringent internal standards of the time. Active Features Braking System: Standard disc brakes on front wheels, drums on rear. Some later models offered rear discs. Steering System: Recirculating ball steering, often with optional...