🏷️ Basic Information Identification Make: Mercedes-Benz Model: W124 Variant: 300E / E320 Engine Type: Inline-6 Cylinder Production Years: 1986-1990 Codes Chassis Code: W124 Engine Code 300E: M103.980 Engine Code E320: M104.990 (later models, potentially included) 👋 Introduction Market Position Target Audience: Owners of Mercedes-Benz W124 300E/E320 models seeking to perform maintenance, repairs, or diagnostics; professional automotive technicians Competitive Analysis Manual Value Proposition: Provides comprehensive, factory-level information in a convenient digital format, offering significant cost savings over dealership service Key Features Manual Features: Detailed substeps, notes/cautions/warnings, numbered instructions, bold figure numbers, detailed illustrations/drawings/photos, enlarged insets, numbered table of contents, electrical troubleshooting with wiring diagrams Delivery Method Delivery Method: Instant download link provided on checkout page post-payment 📋 Manual Details Coverage Areas Covered Models: Mercedes-Benz W124 300E 3.0L (1986-1990), Mercedes-Benz W124 E320 3.0L (1986-1990) Page Count Page Count Estimate: Hundreds of pages (estimated based on product description) Manual Type Manual Type: Service and Repair Manual / Workshop Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, diagnosis, repair, timing components, cooling system, fuel injection (Bosch KE-Jetronic), lubrication system, exhaust system Transmission: Automatic transmission service and repair, hydraulic systems, torque converter, gear shift mechanisms Suspension And Steering: Front and rear suspension components, shock absorbers, springs, ball joints, control arms, steering gearbox, power steering system Brakes: Hydraulic brake system, ABS (Anti-lock Braking System) diagnosis and repair, brake pads, rotors, calipers, lines, master cylinder Electrical System: Comprehensive wiring diagrams, starter, alternator, battery, lighting systems, ignition system, fuse box, relays, instrument cluster, onboard diagnostics Body And Chassis: Body panel repair, door mechanisms, window regulators, sunroof operation, body sealing, chassis lubrication HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system diagnosis, repair, refrigerant handling, climate control module Procedures Included Maintenance: Oil changes, filter replacements (air, oil, fuel), spark plug replacement, fluid checks and top-offs, lubrication, tire pressure checks, brake fluid flush Repair: Engine rebuild, transmission overhaul, brake component replacement, suspension work, electrical component repair, exhaust system repair, interior trim repair Troubleshooting: Diagnostic procedures for various systems, identifying causes of common issues, fault code interpretation (where applicable) Diagnostics: Detailed diagnostic routines for engine management, fuel system, electrical faults, and mechanical issues Technical Depth Depth Of Information: Comprehensive, covering basic to advanced repairs and overhauls, suitable for DIY enthusiasts and professional mechanics 📊 Manual Specifications File Format File Format Details: PDF (Portable Document Format) Print Quality Printability: Printable without restriction Binding Type Binding Type: Digital (Downloadable) Paper Type Paper Type: N/A (Digital Format) Searchability Search Functionality: Likely searchable via Adobe Reader (depending on PDF creation) Additional Requirements Software Requirements: Adobe PDF Reader, WinRar, Flash Player ⚙️ Engine Specifications Primary Engine Engine Code 300E: M103.980 Engine Displacement 300E: 2.962 cc (3.0 Liters) Engine Configuration 300E: Inline 6-cylinder, SOHC (Single Overhead Camshaft) Bore X Stroke 300E: 88.5 mm x 80.25 mm Compression Ratio 300E: 9.2:1 Horsepower 300E: 188 hp (138 kW) at 5700 rpm Torque 300E: 195 lb-ft (265 Nm) at 4400 rpm Fuel System: Bosch KE-Jetronic Fuel Injection (Electronically controlled mechanical injection) Ignition System: Electronic Ignition (CDI - Capacitor Discharge Ignition) Engine Code E320: M104.990 (Note: This engine was introduced later in the W124 E320 models, typically from 1993 onwards, but this manual may cover its earlier iterations if applicable to the specified years. The 1986-1990 E320 was usually the 3.0L M103, making 'E320 3.0L' a potential overlap or specific designation.) Engine Displacement E320 Potential: 3199 cc (3.2 Liters) for M104.990 Engine Configuration E320 Potential: Inline 6-cylinder, DOHC (Double Overhead Camshaft) Performance Performance Enhancements Covered: Engine tuning, component upgrades (if mentioned in manual) 🔧 Transmission Standard Standard Transmission: 4-speed Automatic Transmission (722.3xx series) Optional Optional Transmission: 5-speed Manual Transmission (G3-75/1, G3-75/2) Features Automatic Transmission Features: Hydraulic control, torque converter lock-up clutch Fluid Specifications Automatic Transmission Fluid Type: MB Spec 236.1 (e.g., MBZ ATF Dexron IIE or equivalent) Fluid Capacities Automatic Transmission Fluid Capacity: Approximately 7.5 - 9.0 liters (varies with torque converter) 📐 Dimensions Exterior Body Styles: Sedan (Saloon), Estate (T-model), Coupe (C124), Convertible (A124) - Manual likely covers Sedan primarily, but general principles may apply to others. Weights Curb Weight: Approximately 1500-1600 kg (1400-1500 kg for manual, higher for auto) 🛡️ Safety Features Ratings Safety Ratings Era: Designed to meet stringent safety standards of its era, including robust body structure and crumple zones. Active Features Active Safety Features: ABS (Anti-lock Braking System) standard on most 300E/E320 models, advanced suspension for stability Passive Features Passive Safety Features: Reinforced safety cell, driver and front passenger airbags (optional on early models, standard later), seatbelt pre-tensioners 💡 Technology Features Infotainment Infotainment Systems: Basic analog radio and cassette player, optional upgraded sound systems, manual likely covers their basic maintenance and repair. Driver Assistance Driver Assistance Features: Cruise control (optional), ABS (standard on many models) Connectivity Connectivity Features: N/A (Vehicles of this era did not feature modern connectivity...