🏷️ Basic Information Identification Make: Mercedes-Benz Model Series: 107, 123, 124, 126, 129, 140, 201 Model Years Covered: 1981-1993 Codes Chassis Codes: W107, W123, W124, W126, R107, C107, C123, S123, W116 (partial overlap in early 81), W124, S124, A124, C124, W126, C126, R129, W140, C140, W201 👋 Introduction Market Position Market Position: Essential documentation for owners and independent workshops specializing in Mercedes-Benz vehicles of the 1980s and early 1990s. Positions itself as the definitive resource, mirroring dealership-level technical information. Competitive Analysis Competitive Analysis: Outperforms generic Haynes or Chilton manuals in terms of detail and accuracy. Directly comparable to official Mercedes-Benz factory service manuals (like the ASRA system data), providing a more accessible and affordable alternative for DIY or independent repair. Key Features Key Features: Instant download, comprehensive coverage across multiple iconic Mercedes-Benz series, detailed step-by-step instructions, high-quality diagrams and illustrations, wiring schematics, printable pages, ease of use for all skill levels, cost-saving for owners. 📋 Manual Details Coverage Areas Coverage Areas: Comprehensive maintenance, repair, diagnostics, and troubleshooting for all listed Mercedes-Benz series. Page Count Page Count: Undisclosed (stated as 'complete' and 'every single detail', implying extensive content, typical for factory service manuals which can range from hundreds to thousands of pages depending on the scope of series covered). Manual Type Manual Type: Service and Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Systems Covered: Engine (mechanical and electrical), fuel system (injection, carburetion on earlier models if applicable within range), cooling system, exhaust system, ignition system, lubrication system, transmission (manual and automatic), drivetrain (driveshaft, axles, differentials), suspension (front and rear, including level control, ADS, ASD, 4MATIC), steering, brakes (hydraulic, parking, ABS if applicable), electrical system (wiring diagrams, lighting, instrumentation, accessories, power windows, central locking, sunroof, hydraulic top), HVAC (heating, ventilation, air conditioning), bodywork (chassis, exterior, interior trim, corrosion inspection), safety features (seat belts, etc.). Procedures Included Procedures Included: Scheduled maintenance (oil changes, filter replacements, fluid checks, belt inspections), component inspection (lines, hoses, suspension, body structure, brakes, steering), engine adjustments (valve clearance, idle speed, injection timing), filter replacement (fuel, air, oil), component replacement (spark plugs, sensors, hoses, belts, filters), fluid changes (engine oil, transmission fluid, brake fluid, coolant, power steering fluid, transfer case fluid, differential fluid, clutch fluid, hydraulic top fluid), troubleshooting diagnostics, electrical system repair, HVAC system servicing, body panel removal and installation, lubrication of hinges and locks, soft top and hydraulic top operation and maintenance, wheel and tire service, brake system bleeding and adjustment, power steering system checks, fuel system checks, battery servicing, lighting system checks, wiper system maintenance, AC refrigerant charging, filter replacements for HVAC. Technical Depth Technical Depth: Factory-level detail, including step-by-step repair procedures, torque specifications, diagnostic flowcharts, wiring schematics, detailed illustrations, and diagrams. Covers everything from basic maintenance to complete engine and transmission rebuilds, as well as advanced system diagnostics for features like ADS, ASD, and 4MATIC. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution, printable, allowing for zoom and enlarged copies of diagrams and images. Consistent with professional workshop manual standards. Binding Type Binding Type: N/A (Digital Download - PDF) Paper Type Paper Type: N/A (Digital Download - PDF) ⚙️ Engine Specifications Primary Engine Primary Engine Coverage: Covers a wide range of Mercedes-Benz engines from the period, including M102 (2.0L, 2.3L I4), M103 (2.6L, 3.0L I6), M104 (2.8L, 3.0L, 3.2L I6, DOHC), M110 (2.8L, 3.0L I6), M116/M117 (3.8L, 4.2L, 5.0L V8), M119 (4.2L, 5.0L V8, DOHC), OM601 (2.0L, 2.2L Diesel I4), OM602 (2.5L, 2.9L Diesel I5), OM603 (3.0L, 3.5L Diesel I6), OM615/OM616 (2.2L, 2.4L Diesel I4), OM617 (3.0L Diesel I5). Specific engine variants and their detailed service procedures are covered within the respective model series sections. Performance Performance Details: The manual provides specifications for engine power output (horsepower and torque), engine speed (RPM), and performance tuning parameters for all covered engine variants. This allows for accurate diagnosis and restoration of original performance. Fuel System Fuel System Coverage: Covers Bosch K-Jetronic (CIS), KE-Jetronic (CIS-E), and later Motronic fuel injection systems, as well as mechanical fuel injection for diesel engines. Includes procedures for fuel filter replacement, fuel pump testing, injector diagnosis, fuel pressure regulation, and idle speed adjustments. 🔧 Transmission Standard Standard Transmission Coverage: Details service and repair for Mercedes-Benz 4-speed and 5-speed manual transmissions, including clutch operation, fluid changes, and adjustment procedures. Optional Optional Transmission Coverage: Extensive coverage of Mercedes-Benz automatic transmissions (e.g., 722.3, 722.4, 722.5, 722.6 variants common in this era). Includes fluid and filter changes, torque converter service, linkage adjustments, and troubleshooting of common automatic transmission issues. Features Transmission Features: Information on specific transmission control systems and electronic aids where applicable within the model years, such as vacuum modulator adjustments and diagnostic procedures for electronic transmission control modules. 📐 Dimensions Exterior Exterior Dimensions: The manual provides detailed dimensions for all covered series (e.g., W124 sedan,...