🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 Series 280E Model Code: W123 (specifically 123.033 for 280E sedan) Year: 1977-1981 Codes Chassis Code: 123.033 👋 Introduction Market Position Target Audience: Mercedes-Benz W123 280E owners and enthusiasts who perform their own maintenance and repairs, as well as independent repair shops. Competitive Analysis Value Proposition: Provides the same level of detail as dealer-issued manuals at a fraction of the cost, empowering owners to maintain and repair their classic Mercedes-Benz vehicles effectively. Key Features Features: Detailed illustrations, step-by-step instructions, comprehensive diagnostic procedures, printable format, covers all major vehicle systems. 📋 Manual Details Coverage Areas Covered Sections: 00 (Maintenance, Service, Technical Data, General Descriptions, Operating Instructions, Fluids), 01 (Engine Removal/Installation, Crankcase, Cylinder Head, Engine Breathing), 03 (Crank Assembly), 05 (Engine Timing, Valves), 07.1 (Diesel Injection System - *Note: likely included for completeness of series, but not 280E specific*), 07.2 (Carburetor System - *Note: not applicable to 280E*), 07.3 (Mechanically and Mechanically/Electronically Controlled Gasoline Injection System - *Applicable to earlier 280E models or variants*), 07.4 (Electronically Controlled Gasoline Injection System - *Applicable to later 280E models*), 09 (Air Cleaner, Intake Air Preheater, Exhaust Gas Turbocharger - *Note: Turbocharger not on 280E*), 13 (Air Compressor, Belt Drives), 14 (Intake Manifold, Exhaust Manifold, Engine Brake, Emission Control System), 15 (Electrical System Engine - Ignition, Preheating, Starter, Alternator), 18 (Engine Lubrication, Oil Cooler), 20 (Engine Cooling System, Hoses, Radiator), 22 (Engine Mounting), 25 (Clutch - *for manual transmission models*), 26 (Manual Transmission, Power Take-offs), 27 (Automatic Transmission), 28 (Transfer Case - *not applicable to 280E*), 29 (Pedals), 30 (Throttle Control, Throttle Linkage, Regulating Shafts, Accelerator Pedal), 31 (Frame, Trailer Operation), 32 (Suspension), 33 (Front Axle), 35 (Rear Axle, Trailing Axle), 40 (Wheels, Chassis Measurements), 41 (Propeller Shaft), 42 (Brakes - Hydraulic/Mechanical System), 43 (Brakes - Pneumatic System/Auxiliary Brakes - *Note: pneumatic systems usually for heavy duty vehicles, likely covered for completeness of W123 chassis*), 46 (Steering), 47 (Fuel System), 49 (Exhaust System, Heat Shield), 54 (Electrical System - Equipment, Instruments, Speed Control Systems), 55 (Auxiliary Drives, Hydraulic and Articulated Systems), 58 (Tools, Test Instruments, Equipment), 60 (Body, General), 61 (Understructure), 62 (Front End and Front Wall), 63 (Side Wall), 64 (Rear Wall and Rear End), 65 (Roof), 67 (Glass and Windows), 68 (Interior Equipment), 72 (Doors), 75 (Trunk Lid, Fuel Flap), 77 (Slide Roof/Sun Roof, Top, Racks), 82 (Electrical System Body - Radio, Windshield Washer, Light Range Regulator), 83 (Climate Control), 86 (Emergency Equipment, Sanitary Equipment, Kitchen - *Note: likely for recreational variants, less applicable to standard 280E*), 88 (Attachments, Outside Flaps), 91 (Seats, Cots, Restraint Systems), 94 (Body Noises, Sound Insulation), 97 (Body Sealing, Anti-corrosion Protection), 98 (Paintwork), 99 (Technical Literature, Validity List, Administration), MM (Maintenance Manual), OM (Owner's Manual) Identification Page Count: Not specified in product information, but expected to be extensive covering all listed sections. Manual Type: Service Repair Manual (FSM - Factory Service Manual equivalent) Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine And Powertrain: Engine mechanicals (crankshaft, cylinder head, timing, valves), fuel injection systems (mechanical/electronic), lubrication, cooling, intake/exhaust systems, ignition, starter, alternator, clutch, manual and automatic transmissions, propeller shaft, rear axle. Chassis And Suspension: Frame, suspension components (front and rear axles), steering system, wheels, chassis measurements. Brakes And Fuel: Hydraulic and mechanical brake systems, pneumatic systems (if applicable to W123), fuel system components, exhaust system. Electrical And Body: Engine electrical systems (ignition, starting, charging), body electrical systems (lights, wipers, washers, instruments, radio, climate control), body panels, interior trim, glass, doors, trunk lid, sunroof. Procedures Included Maintenance And Tune Up: Regular service intervals, fluid checks and changes, filter replacements, ignition timing, fuel system adjustments, lubrication points. Repair And Rebuild: Detailed step-by-step procedures for engine overhaul, transmission rebuild, brake system repair, suspension component replacement, electrical system troubleshooting and repair, bodywork and interior repair. Diagnostics And Troubleshooting: Diagnostic charts, fault finding procedures, common problem identification, solutions for engine performance issues, electrical gremlins, and mechanical failures. Technical Depth Depth Of Information: Comprehensive coverage suitable for DIY mechanics and professional technicians, including detailed illustrations, exploded views, torque specifications, and diagnostic flowcharts. Covers everything from routine maintenance to complete vehicle restoration. 📊 Manual Specifications File Format File Format: PDF Print Quality Printability: Fully printable without restrictions, allowing users to print specific pages or the entire manual for workshop use. Binding Type Binding: Digital (PDF download). Original FSM would typically be a bound book. Paper Type Paper Quality: N/A (Digital PDF). Original manuals would be printed on durable paper suitable for workshop environments. ⚙️ Engine Specifications Primary Engine Engine Model: M110 Engine Type: Inline-6 Cylinder, DOHC (Double Overhead Camshaft) Displacement: 2.8 Liters (2799 cc) Performance Horsepower Approx: 182-185 hp (SAE Gross) depending on specific year and market, or 142-150 hp (SAE Net). Torque Approx: 177-180 lb-ft (SAE Gross) or 135-145 lb-ft (SAE Net). Fuel System Fuel...