🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 280CE Chassis Code: W123 Body Style: Coupé (2-door) Generation Generation Code: First Generation Codes Engine Code Example: M110 👋 Introduction Market Position Positioning: Premium mid-size luxury coupé known for build quality, comfort, and durability Competitive Analysis Competitors: BMW 6 Series, Audi 5+2, Jaguar XJ-S (though often positioned slightly higher) Key Features Design Philosophy: Robust engineering, classic Mercedes-Benz styling, focus on passenger safety and comfort Target Audience: Discerning buyers valuing luxury, performance, and long-term reliability 📋 Manual Details Coverage Areas Coverage Years: 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Specific Model Variant: 280CE Page Count Total Pages: 559 Manual Type Type: Workshop Service Repair Manual Language Language: English Format File Format: PDF Accessibility: Instant Download 📖 Manual Coverage Systems Covered Engine: Complete overhaul, diagnostics, tuning, fuel injection, ignition, cooling, lubrication, exhaust Transmission: Automatic transmission (4-speed) service, repair, adjustments, fluid specifications Drivetrain: Rear axle, driveshaft, CV joints, wheel bearings Suspension: Front and rear suspension components, shock absorbers, springs, bushings, alignment specifications Steering: Power steering system service, pump, gearbox, steering linkages Brakes: Hydraulic system, brake discs, calipers, pads, lines, parking brake, fluid specifications Electrical System: Battery, alternator, starter, lighting, wiring diagrams, fuses, relays, instrumentation Bodywork: Body panel repair, doors, windows, locks, interior trim, seals Climate Control: Heating and ventilation system, A/C system service (where applicable) Fuel System: Fuel tank, fuel pump, fuel lines, fuel injectors, fuel pressure regulator Exhaust System: Catalytic converter (from late 70s/early 80s), mufflers, exhaust manifold, lambda sensor testing (if equipped) Cooling System: Radiator, water pump, thermostat, heater core, hoses, fan clutch Ignition System: Distributor, spark plugs, ignition coils, ignition control module Lubrication System: Oil pump, oil filter, oil pressure sender, oil passages Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks, lubrication Troubleshooting: Diagnostic procedures for common and uncommon issues, symptom analysis Repair: Step-by-step repair instructions for all major vehicle systems Disassembly Assembly: Detailed procedures for removing and reinstalling components Adjustments: Carburetor/fuel injection adjustments, ignition timing, valve clearances, brake adjustments Technical Specifications: Torque values, wear limits, measurement specifications, electrical resistance values Troubleshooting Charts: Includes specific troubleshooting charts for common drivability and electrical issues Component Identification: Clear identification of all components and their locations within the vehicle Technical Depth Depth: Comprehensive, covering from basic maintenance to complex component overhaul and diagnostics Detail Level: Includes pictorial diagrams, exploded views, and step-by-step instructions Special Tools: References special tool numbers and provides guidance on their usage Diagnostics: Detailed diagnostic procedures for engine management, fuel injection, and electrical systems 📊 Manual Specifications File Format Readability: High-resolution PDF, zoomable Print Quality Printability: Fully printable Image Quality: Clear, detailed illustrations, drawings, and photos Binding Type Digital Format: Digital PDF download Paper Type Physical Equivalent: Equivalent to a professional workshop manual Compatibility Operating Systems: Windows, Mac, Linux OS Required Software: Adobe Reader ⚙️ Engine Specifications Primary Engine Engine Code: M110 (984/985 variants for 280CE) Engine Type: Inline-6 Cylinder, DOHC Displacement: 2746 cc (2.7 Liters) Bore X Stroke: 86.0 mm x 78.7 mm Compression Ratio: 8.0:1 or 9.0:1 (depending on market/specific variant) Performance Horsepower: 177 hp (130 kW) at 5500 rpm (DIN) / 185 hp (136 kW) at 5500 rpm (SAE net, later models) Torque: 235 Nm (173 lb-ft) at 4000 rpm (DIN) / 240 Nm (177 lb-ft) at 4000 rpm (SAE net, later models) Fuel System Fuel Delivery: Bosch K-Jetronic (CIS) Continuous Injection System Fuel Type: Unleaded gasoline (Premium Octane) 🔧 Transmission Standard Transmission Type: 4-speed automatic (e.g., 722.1) Optional Transmission Type: 4-speed or 5-speed manual (less common on CE models, more on sedan/coupe models like 280E) Features Automatic Features: Torque converter, hydraulic control 📐 Dimensions Exterior Length: approx. 4725 mm (186.0 in) Width: approx. 1790 mm (70.5 in) Height: approx. 1440 mm (56.7 in) Wheelbase: approx. 2795 mm (110.0 in) Weights Curb Weight: approx. 1450 - 1550 kg (3197 - 3417 lbs) 🛡️ Safety Features Ratings Design Focus: High level of passive safety for its era, crumple zones, strong safety cell Active Features Braking System: Four-wheel disc brakes (front ventilated) Passive Features Airbags: Not standard on early models, optional later Seatbelts: Standard front seatbelts, optional rear seatbelts Construction: Reinforced passenger compartment 💡 Technology Features Infotainment Audio System: Period-correct Becker radios, often with cassette players, optional amplifier Driver Assistance Cruise Control: Optional cruise control (Tempomat) available on some models Climate Control: Optional automatic climate control (Thermatic) on higher-spec models Connectivity Phone Integration: Not applicable for the era 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000 - 15,000 km (6,000 - 9,000 miles) or 12 months, depending on driving conditions and oil used (refer to manual for exact specs) Major Service: Recommended at higher mileages (e.g., 80,000 - 100,000 km) for comprehensive inspection and component renewal Fluid Specifications Engine Oil: API SF/SG rated, SAE 20W-50 or 10W-40 (depending on climate and temperature, refer...