🏷️ Basic Information Identification Make: Mercedes-Benz Model: 114 / 115 Series Model Aliases: W114, W115, /8 Series, Stroke Eight Generation Production Years: 1968-1973 (W114), 1968-1976 (W115) Codes Chassis Codes: W114, W115 👋 Introduction Market Position Segment: Mid-size luxury sedan and coupe, positioned as a more accessible entry into Mercedes-Benz ownership while retaining premium build quality and engineering. Competitive Analysis Competitors: Competed with vehicles like the BMW E3 Neue Klasse, Audi 100, Volvo 140 Series, and other European luxury and executive sedans of the era. Key Features Design Philosophy: Emphasized robust engineering, long-term durability, advanced safety features for its time, and sophisticated ride comfort, embodying Mercedes-Benz's reputation for quality. Body Styles: Offered as a four-door sedan (W115) and a two-door coupe (W114), later a longer wheelbase sedan was also available. 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive workshop service and repair for Mercedes-Benz W114 and W115 models. Page Count Estimated Pages: Likely 500+ pages (typical for comprehensive factory-style manuals). Manual Type Type: Workshop Service Repair Manual Language Language: English (presumed, as most widely distributed manuals of this era for export markets were in English). Format Format: PDF (Digital) 📖 Manual Coverage Systems Covered Engine: Detailed coverage of all gasoline (M114, M115) and diesel (OM601, OM602, OM615, OM616) engines, including overhaul, timing, fuel injection systems, lubrication, cooling, and exhaust. Transmission: Manual and automatic transmission service, repair, overhaul, clutch, and drive shaft components. Brakes: Hydraulic brake system (front discs, rear drums), parking brake, brake fluid, master cylinder, wheel cylinders, calipers, and ABS if applicable to later variants. Suspension: Front independent suspension (double wishbone), rear semi-trailing arm suspension, shock absorbers, springs, ball joints, bushings, and steering components. Electrical: Complete electrical system, wiring diagrams, ignition system, starting system, charging system (alternator/generator), lighting, instrumentation, fuses, relays, and accessories. Body: Body shell construction, door mechanisms, window regulators, trim, bumpers, glass replacement, interior components, and underbody protection. HVAC: Heating system, ventilation, and optional air conditioning system diagnosis and repair. Procedures Included Maintenance: Routine maintenance schedules, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, tune-ups, and belt adjustments. Repair: Detailed step-by-step repair procedures for all major mechanical and electrical components, including engine rebuilds, transmission overhaul, brake caliper replacement, suspension arm replacement, and electrical component diagnostics. Troubleshooting: Diagnostic charts and troubleshooting guides for common and uncommon problems, helping to identify causes and solutions. Diagnostics: Procedures for diagnosing faults in the engine, fuel, ignition, electrical, and mechanical systems. Adjustments: Precise specifications and procedures for adjusting valve clearances, ignition timing, carburetor settings, idle speed, and clutch pedal free play. Fuel System Repair: Detailed procedures for carburetor overhaul and adjustment, fuel pump replacement, fuel line repair, and fuel tank cleaning/servicing. Ignition System Diagnosis: Step-by-step troubleshooting for ignition timing, distributor, coil, spark plugs, and wiring for reliable starting and running. Cooling System Maintenance: Radiator, water pump, thermostat, hoses, and fan clutch inspection, replacement, and coolant flush procedures. Steering And Suspension Alignment: Specifications and procedures for wheel alignment, tie rod end replacement, ball joint inspection, and bushing replacement. Electrical Component Replacement: Guides for replacing starter motors, alternators, voltage regulators, wiper motors, headlights, and dashboard instruments. Technical Depth Depth Level: Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, suitable for professional mechanics and experienced DIY enthusiasts. Engine Rebuild: Includes detailed specifications for bore, hone, piston ring gap, bearing clearances, and torque sequences for complete engine overhauls. Transmission Rebuild: Procedures for disassembling, inspecting, and reassembling manual and automatic transmissions, including gear replacement and seal installation. Bodywork Repair: Information on body panel alignment, rust repair techniques, and interior trim component removal/installation. Wiring Diagrams: Full vehicle wiring schematics for all major electrical systems, crucial for diagnosis and repair. 📊 Manual Specifications File Format Quality: High-resolution PDF with searchable text and clear, legible diagrams. Printable pages. Print Quality Diagrams: Detailed line drawings, exploded views, and schematics are expected to be high quality and accurate. Binding Type Binding: Not Applicable (Digital PDF) Paper Type Paper: Not Applicable (Digital PDF) ⚙️ Engine Specifications Primary Engine Gasoline Options: M114: 2.3L inline-6 (114.980), M115: 2.0L inline-4 (115.912, 115.914), 2.3L inline-4 (115.917) Diesel Options: OM601: 2.0L inline-4 diesel (W115 variant), OM615: 2.2L inline-4 diesel (60 hp), OM616: 2.4L inline-4 diesel (65 hp), later OM615.940 2.0L and OM616.912 2.2L diesel engines. Performance Horsepower Range: Approx. 90 hp (2.0L diesel) to 140 hp (2.5L gasoline). Torque Range: Approx. 120 lb-ft (2.0L diesel) to 150 lb-ft (2.5L gasoline). Fuel System Gasoline Induction: Carburetor (e.g., Solex, Zenith) for most models; fuel injection (Bosch D-Jetronic or similar) on some later or higher-performance variants. Diesel Injection: Bosch inline injection pump. Engine Construction Block Material: Cast Iron Head Material: Aluminum Alloy Cooling System Type: Water Cooled, Thermostatic Control 🔧 Transmission Standard Type: 4-speed Manual Transmission (floor or column shift) Optional Type: 3-speed or 4-speed Automatic Transmission (e.g., 'Hydrak', 'TorqueFlite' based) Features Clutch: Single dry...