🏷️ Basic Information Identification Make: Mercedes-Benz Model: W114/W115 Year: 1973 Codes Chassis Code: W114/W115 👋 Introduction Market Position Target Audience: Mercedes-Benz W114/W115 owners, independent repair shops, classic car enthusiasts, DIY mechanics. Segment Positioning: Positioned as a premium mid-size sedan and coupe, bridging the gap between the smaller W115 and the larger S-Class (W108/W109). Competitive Analysis Value Proposition: Provides definitive, vehicle-specific information identical to what dealership technicians use, enabling accurate and efficient repair, maintenance, and diagnosis. Significantly more detailed and accurate than generic repair guides. Key Features Digital Advantage: Easy navigation, search functionality, ability to print specific sections, protection from physical wear and tear. Content Detail: Complete A-Z coverage for all models and repairs, including detailed diagrams, illustrations, and wiring schematics. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Maintenance, Diagnosis Model Variants Covered: All W114 and W115 models Page Count Estimated Page Count: Varies by specific factory publication, but comprehensive digital versions typically offer equivalent detail to hundreds of printed pages. Manual Type Type: Factory Service and Repair Manual Language Language: English Format Format: PDF (Digital) 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, overhaul, timing, fuel system, cooling, lubrication, ignition, starting, charging systems. Transmission: Manual and automatic transmission service, overhaul, fluid specifications, adjustments, clutch service. Brakes: Hydraulic system, calipers, drums, parking brake, fluid specifications, bleeding procedures. Suspension Steering: Front and rear suspension components, steering gear, power steering, alignment specifications, wheel bearings. Electrical: Complete wiring schematics, component testing, lighting, instrumentation, power distribution, starter, alternator. Body Interior: Body panels, doors, windows, locks, seats, upholstery, glass, mirrors, climate control, wipers, washers. Fuel Emission: Fuel delivery, carburetor/injection systems (model dependent), emission control systems, specifications. Chassis And Body: Frame construction, body mounting, door mechanisms, hinges, latches, hood, trunk lid, windshield, rear glass, mirrors. Climate Control: Heater core, ventilation system, blower motor, control linkages, and any optional air conditioning systems. Fuel And Emission Control: Detailed coverage of fuel tanks, lines, pumps, filters, carburetors or early fuel injection systems, and emission control devices as mandated by regulations of the era. Drive Axle And Differential: Service procedures for rear axle assembly, driveshaft, universal joints, and differential unit, including fluid types and capacities. Procedures Included Maintenance Schedule: Regular maintenance intervals, fluid changes, filter replacements, lubrication points. Troubleshooting: Diagnostic flowcharts, common problem identification, symptom-based troubleshooting. Repair Procedures: Step-by-step instructions for component removal, installation, and overhaul for all major systems. Diagnostics: Detailed procedures for diagnosing electrical and mechanical faults. Component Replacement: Detailed guides for replacing parts such as alternators, starters, fuel pumps, water pumps, radiator, exhaust components. Adjustments: Carburetor idle speed and mixture, valve clearances, ignition timing, parking brake adjustment, clutch free play. Technical Depth Depth: Comprehensive, factory-level detail suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic maintenance to complete engine rebuilds and complex electrical diagnostics. Specifications And Data: Includes torque specifications for critical fasteners, engine bearing clearances, piston ring gaps, valve lift, timing marks, and wheel alignment angles. 📊 Manual Specifications File Format Compatibility: Windows (Vista, XP, ME, 98, NT, 2000) and Mac compatible. File Requirements: Requires Adobe PDF Reader and Winzip (or equivalent extraction software). Print Quality Printability: All pages are printable; allows for enlarged image printing. Binding Type Binding: Digital (PDF) - No physical binding. Paper Type Digital Features: Searchable text, zoomable images, hyperlinked sections (if applicable to specific PDF creation). ⚙️ Engine Specifications Primary Engine Engine Variants: Covers gasoline (e.g., M115, M114 inline-4 and inline-6) and diesel (e.g., OM615, OM616, OM617 inline-4 and inline-5) engines. Performance Engine Performance Details: Includes specifications for horsepower, torque, bore, stroke, compression ratios for various engine options. Fuel System Fuel System Coverage: Details on Solex, Zenith, or Bosch fuel injection systems (depending on specific model and market), fuel pumps, filters, and pressure specifications. Engine Variants Diesel Engine Details: OM615 (2.0L, 2.2L), OM616 (2.4L), OM617 (3.0L) naturally aspirated diesel engines, known for their durability and fuel efficiency. Gasoline Engine Details: M115 (2.0L, 2.3L inline-4), M114 (2.5L inline-6), M110 (2.8L inline-6, introduced later) gasoline engines. 🔧 Transmission Standard Manual Transmission Options: Details for 4-speed and 5-speed manual transmissions common in W114/W115 models. Optional Automatic Transmission Options: Coverage for the Mercedes-Benz 3-speed automatic transmission (e.g., 720) with torque converter. Features Transmission Fluid Specs: Specific automatic transmission fluid (ATF) types and capacities, manual transmission gear oil specifications. Gear Ratios: Manual and automatic transmission gear ratios are provided for different model configurations. 📐 Dimensions Exterior Wheelbase: W114: 2800mm (110.2 in); W115: 2750mm (108.3 in) Length: Approx. 4740 mm (186.6 in) Width: Approx. 1750 mm (68.9 in) Height: Approx. 1420 mm (55.9 in) Weights Curb Weight: Varies significantly by engine and equipment, typically ranging from 1300kg to 1500kg (2866 lbs to 3307 lbs). 🛡️ Safety Features Ratings Safety Features Design: While formal crash ratings of the modern era are not applicable, the W114/W115 featured a robust safety cage, crumple zones, and safety...