🏷️ Basic Information Identification Make: Mercedes-Benz Model: 300D Turbo Generation: W124 (First Generation) Chassis Code: W124 Codes Engine Code Family: OM603 👋 Introduction Market Position Vehicle Segment: Mid-size Luxury Sedan (E-Class) Target Audience: Discerning buyers seeking durability, comfort, and refined diesel performance Competitive Analysis Key Competitors: BMW 5 Series Diesel, Audi 100/200 Diesel, Volvo 240/740 Diesel Key Features Vehicle Attributes: Exceptional build quality, robust diesel engine, comfortable ride, advanced engineering for its era Manual Value Proposition Benefit To Owner: Empowers owners and technicians to accurately diagnose and repair the vehicle, ensuring longevity and optimal performance 📋 Manual Details Coverage Areas Years Covered: 1986, 1987 Models Covered: 300D Turbo Sedan (W124.133) Page Count Estimated Pages: Refer to actual manual content, typically 500+ pages for comprehensive coverage Manual Type Type: Service Repair Manual Language Language: English Format Digital Format: PDF / WINRAR 📖 Manual Coverage Systems Covered Powertrain: Engine Mechanical, Fuel System, Lubrication System, Cooling System, Turbocharging System Transmission: Manual Transmission, Automatic Transmission (4-Speed 722.4), Transfer Case (if applicable to specific model variant) Drivetrain: Driveshaft, Axles, Differential Suspension Steering: Front Suspension, Rear Suspension, Steering System, Level Control (if equipped) Brakes: Brake System Hydraulics, Parking Brake, ABS (Anti-lock Braking System - if equipped) Electrical: Engine Electrical, Ignition System, Lighting, Instrumentation, Power Accessories, Fuses, Relays Body Chassis: Body Structure, Doors, Hood, Trunk, Glass, Body Seals, Interior Trim, Noise Insulation Climate Control: Heating, Ventilation, Air Conditioning (HVAC), Climate Control Systems Safety Features: Seat Belts, Airbags (if equipped), Locking Mechanisms Procedures Included Routine Maintenance: Oil and Filter Changes, Fluid Level Checks and Top-offs, Air Filter Replacement, Fuel Filter Replacement, Belt Inspection and Adjustment, Spark Plug Service, Coolant Flush and Replacement Troubleshooting: Diagnostic Procedures for Engine Performance, Electrical Faults, and Component Failures Component Repair: Engine Overhaul, Transmission Repair, Brake System Overhaul, Suspension Component Replacement, Steering System Repair Disassembly Assembly: Detailed steps for removing and installing major components and sub-assemblies Inspection: Visual inspections of components, lines, hoses, body structure, and fluid conditions Adjustments: Valve Clearance Adjustment, Idle Speed Adjustment, Injection Timing Adjustment, Parking Brake Adjustment Technical Depth Level: Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts Detail Level: Includes torque specifications, diagnostic charts, component diagrams, and step-by-step repair instructions 📊 Manual Specifications File Format Digital Delivery: Instant Download Compatibility: Win95/98/ME/XP/vista/7/8/Linux/MAC, iOS, Android Print Quality Digital Resolution: High-resolution for clear viewing and printing Binding Type Digital Format: N/A (Digital Download) Paper Type Digital Format: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-Cylinder Turbocharged Diesel Displacement: 2.996 cc (3.0 Liters) Bore X Stroke: 87.0 mm x 84.0 mm Compression Ratio: 22.0:1 Fuel Delivery: Bosch Inline Fuel Injection Pump with Turbocharger Performance Horsepower: 125 hp @ 4,300 rpm (approx.) Torque: 228 lb-ft @ 2,400 rpm (approx.) Fuel System Injection System: Mechanical Diesel Injection Fuel Type: Diesel Fuel 🔧 Transmission Standard Type: 4-Speed Automatic (722.4) Optional Type: 5-Speed Manual Transmission (Less Common) Features Automatic Transmission Characteristics: Smooth shifting, robust design, often referred to as 'bulletproof' 📐 Dimensions Exterior Wheelbase: 110.1 inches (2799 mm) Length: 188.0 inches (4775 mm) Width: 69.4 inches (1763 mm) Height: 55.5 inches (1410 mm) Weights Curb Weight: Approx. 3,400 - 3,600 lbs (1542 - 1633 kg) 🛡️ Safety Features Ratings Era Specific Ratings: As per contemporary testing standards, known for robust construction. Active Features ABS: Optional Anti-lock Braking System (ABS) Passive Features Construction: Reinforced safety cage, crumple zones Restraints: Three-point seat belts, optional driver's side airbag 💡 Technology Features Infotainment Audio System: Factory-installed AM/FM cassette stereo systems, often with optional premium sound. Driver Assistance ABS: Available ABS system on later models. Connectivity Original Features: Focus on mechanical and electrical reliability rather than advanced electronic connectivity. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000 - 7,500 miles or 6-12 months, consult specific manual for exact recommendation. Air Filter Replacement: Every 15,000 - 30,000 miles or as needed based on driving conditions. Fuel Filter Replacement: Every 15,000 - 25,000 miles. Coolant Replacement: Every 30,000 - 50,000 miles or 2-3 years. Fluid Specifications Engine Oil: API CD or higher; SAE 15W-40 or 10W-40 diesel engine oil recommended. Consult manual for precise viscosity based on climate. Transmission Fluid Automatic: MB 236.1 (ATF Dexron II or equivalent) Transmission Fluid Manual: MB 235.1 (GL-4 Gear Oil) Brake Fluid: DOT 3 or DOT 4 Power Steering Fluid: MB 236.3 (ATF Dexron II or equivalent) Coolant: Glysantin G48 (or equivalent silicate-free antifreeze) mixed 50/50 with distilled water. Known Issues Common Wear Items: Vacuum lines, suspension bushings, glow plugs, fuel injector seals, transmission control pressure regulator Diesel Specific Concerns: Maintenance of injection pump timing, fuel system cleanliness, glow plug system reliability 📚 Vehicle History Brand Heritage Mercedes Benz Legacy: Pioneering diesel technology, engineering excellence, and luxury vehicle manufacturing. Model Evolution W124 Introduction: Introduced in 1984 (as W124), the 300D Turbo variant became available later, representing a significant advancement in diesel...