🏷️ Basic Information Identification Make: Mercedes-Benz Model: W114 280 Body Style: Sedan (W114 chassis) Production Years Covered: 1972, 1973, 1974, 1975, 1976 Chassis Code: W114 👋 Introduction Market Position Target Audience: Owners of Mercedes-Benz W114 280, classic car enthusiasts, independent mechanics, restoration specialists. Competitive Analysis Value Proposition: Provides essential factory-level technical data for maintaining and repairing a vintage Mercedes-Benz, saving significant costs compared to dealership service. Key Features Print Flexibility: Ability to print the entire manual or specific sections as needed for convenient access in a workshop environment. Searchability: Digital PDF format allows for quick text searching of specific terms, procedures, or component names. 📋 Manual Details Coverage Areas Primary Coverage: Mercedes-Benz W114 280 (1972-1976 models) Engine Variants Covered: 280 engine variants Transmission Variants Covered: Automatic and Manual transmissions Page Count Estimated Page Count: Hundreds of pages Manual Type Type: Workshop Service Repair Manual Language Language: English Format File Format: PDF Download 📖 Manual Coverage Systems Covered Engine Service Repair: Complete overhaul, diagnostics, component testing, timing, seals, gaskets. Transmission Service Repair: Automatic and manual transmission service, overhaul, clutch, gears, linkages. Brake System: Disc and drum brake servicing, hydraulic system, components, bleeding, parking brake. Electrical System: Comprehensive coverage including starter, alternator, battery, lighting, ignition, instrumentation, and wiring. Wiring Diagrams: Detailed, system-specific wiring diagrams for all electrical components. Suspension: Front and rear suspension components, springs, shock absorbers, bushings, alignment. Steering: Steering gear, linkage, power steering system (if equipped), column, wheel alignment. Cooling System: Radiator, water pump, thermostat, hoses, fan, coolant specifications. Fuel Injection System: Bosch mechanical fuel injection system diagnosis, testing, and adjustment. Fuel System: Fuel pump, fuel lines, fuel tank, filters, carburetor (if applicable to specific variants). Emission System: Emission control systems, smog pump, EGR, PCV components and servicing. Heating Air Conditioning: HVAC system operation, components, refrigerant, airflow, control mechanisms. Engine Control System: Ignition timing, idle speed control, basic engine management principles. Chassis Body: Body panel repair, structural components, doors, hood, trunk, glass, weatherstripping. Restraint System: Seat belts, mounting points, and related safety components. Interior: Dashboard, seats, upholstery, trim panels, headliner, carpet. Differential Drive: Rear axle assembly, differential unit, lubrication, bearings. Axle: Front and rear axle components, bearings, seals. General Maintenance: Routine checks, fluid changes, filter replacements, lubrication. Periodic Lubrication: Lubrication points and schedules for various chassis and drivetrain components. Procedures Included Diagnostic Procedures: Troubleshooting common issues, symptom analysis, component testing. Repair Procedures: Step-by-step instructions for disassembly, repair, reassembly of all covered systems. Maintenance Procedures: Detailed guidance on scheduled maintenance tasks. Electrical Troubleshooting: Systematic approach to diagnosing electrical faults with wiring diagrams. Engine Rebuilding: Comprehensive instructions for engine disassembly, inspection, repair, and reassembly. Fuel Injection Adjustment: Precise instructions for calibrating and adjusting the Bosch mechanical fuel injection system. Technical Depth Depth: Complete factory-level service and repair information, suitable for experienced mechanics and dedicated DIY enthusiasts. Illustration Quality: Hundreds of detailed photos, illustrations, and drawings to guide procedures. Instruction Format: Numbered step-by-step instructions, detailed substeps, notes, cautions, and warnings. 📊 Manual Specifications File Format Format: PDF Print Quality Print Restriction: Printable without restriction Binding Type Binding: Digital Download (printable into a bound manual) Paper Type Paper Type: N/A (Digital Download) Software Requirement Reader Requirement: Adobe PDF Reader Delivery Method Delivery: Instant download link provided after payment ⚙️ Engine Specifications Primary Engine Engine Type: Inline-6 Cylinder, SOHC (M114) Displacement: 2.8 Liters (2778 cc) Bore X Stroke: 86.5 mm x 80.2 mm Performance Horsepower: Approximately 170-180 hp (SAE Gross) depending on specific model year and tuning. Torque: Approximately 180-190 lb-ft (SAE Gross) depending on specific model year and tuning. Fuel System Fuel Delivery: Bosch Mechanical Fuel Injection (CIS - Continuous Injection System) Fuel Type: Unleaded Gasoline (premium recommended) Ignition System Ignition Type: Distributor-based, electronic ignition (later models may feature transistorized ignition). 🔧 Transmission Standard Transmission Type: 4-speed Manual Transmission (standard on some models) Optional Transmission Type: 4-speed Automatic Transmission (optional) Features Fluid Type: Refer to manual for specific automatic transmission fluid (e.g., Dexron III or equivalent) and manual gearbox oil specifications. 📐 Dimensions Exterior Wheelbase: Approximately 2710 mm (106.7 inches) Overall Length: Approximately 4740 mm (186.6 inches) Overall Width: Approximately 1760 mm (69.3 inches) Overall Height: Approximately 1420 mm (55.9 inches) Weights Curb Weight: Approximately 1450-1550 kg (3197-3417 lbs) depending on options and transmission. 🛡️ Safety Features Ratings Safety Standards: Reflects safety standards of the early to mid-1970s, focusing on passive safety features like a robust chassis and seat belts. Active Features Braking System: Hydraulic power-assisted disc brakes front, drum brakes rear. Passive Features Seatbelts: Standard three-point seatbelts in the front, lap belts in the rear. Structural Integrity: Designed with a strong monocoque body structure typical of Mercedes-Benz engineering of the era. 💡 Technology Features Infotainment Radio System: Typically featured an AM/FM radio, potentially with an optional cassette player. Speaker configurations varied. Driver Assistance Features: Limited driver assistance features by modern standards. Focus was...