🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 280C Production Years Covered: 1976-1985 Codes Chassis Code: W123 (Coupe designation 'C') 👋 Introduction Market Position Target Audience: Mercedes-Benz W123 280C owners, DIY mechanics, professional technicians Competitive Analysis Manual Quality: Professional quality, same as used by local service/repair shops Key Features Delivery Method: Instant Download Content Integrity: Complete and intact, no missing or corrupt parts/pages User Benefit: Save time and money on repairs and maintenance 📋 Manual Details Coverage Areas Primary Coverage: All W123 280C models and engines Trim Levels Covered: All trim levels Transmission Types Covered: All transmission types (e.g., automatic, manual) Page Count Estimated Page Count: Hundreds (specific number not provided, but described as 'hundreds of pages') Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Service: Yes Transmission Service: Yes Brake System: Yes Electrical System: Yes Wiring Diagrams: Yes Suspension: Yes Steering: Yes Cooling System: Yes Fuel Injection Fuel System: Yes Emission Control System: Yes Heating Air Conditioning: Yes Engine Control System: Yes Chassis Body: Yes Restraint System: Yes Interior Components: Yes Differential Drive Axle: Yes Procedures Included General Maintenance: Yes Troubleshooting: Yes Repair Procedures: Yes (detailed substeps, numbered instructions) Disassembly Assembly: Yes Cleaning Reinstallation: Yes Lubrication: Yes (periodic lubrication) Technical Depth Diagnostic Capabilities: Comprehensive diagnostic information Repair Level: Professional technician level, complete rebuilds Information Source: Manufacturer-written, original workshop manual 📊 Manual Specifications File Format Format: PDF Requirements: Adobe PDF Reader, WinZip Print Quality Printability: Full Printable Zoom Functionality: Zoom IN/OUT enabled Binding Type Binding Type: Digital Download (implies no physical binding) Paper Type Paper Type: Not Applicable (Digital) ⚙️ Engine Specifications Primary Engine Engine Model: M110 (Inline-6, DOHC) Displacement: 2.8 Liters (2746 cc) Performance Horsepower Approximate: 150-160 hp (depending on market and fuel injection system) Torque Approximate: 220-230 Nm (depending on market and fuel injection system) Fuel System Injection Type: Bosch K-Jetronic (CIS) or similar fuel injection 🔧 Transmission Standard Standard Transmission Type: 4-speed automatic (often standard, especially in North America) Optional Optional Transmission Type: 4-speed or 5-speed manual transmission Features Transmission Control: Hydraulic automatic transmission control 📐 Dimensions Exterior Body Style: Coupé (2-door) Wheelbase Mm: 2710 mm Weights Curb Weight Kg Approximate: 1450-1550 kg 🛡️ Safety Features Ratings Safety Features General: Designed with a focus on occupant safety for its era, including crumple zones. Active Features Brakes: Front disc brakes, rear drum brakes (servo-assisted) Passive Features Seat Belts: Lap and diagonal seat belts (front, possibly rear depending on market) 💡 Technology Features Infotainment Audio System: Factory AM/FM radio with cassette player or push-button radio. Driver Assistance Cruise Control: Optional cruise control system available on some models. Connectivity Connectivity Features: Limited to antenna for radio; no modern electronic connectivity features. 🔧 Maintenance Service Intervals Oil Change Interval Km: Typically 10,000 - 15,000 km or 12 months (refer to manual for precise recommendation) Transmission Fluid Change: Intervals vary, often around 40,000 - 60,000 km or as specified for automatic transmissions. Fluid Specifications Engine Oil Specification: API SF or SG classification, SAE 10W-40 or 15W-40 (check manual for exact viscosity and spec based on climate) Transmission Fluid Automatic: MB-Approval 236.1 or Dexron II (verify with manual) Coolant: Ethylene glycol based coolant with corrosion inhibitors (e.g., Mercedes-Benz coolant) Known Issues Common Wear Items: Ball joints, tie rod ends, fuel distributor seals (K-Jetronic), vacuum lines, climate control O-rings, window regulators. Potential Corrosion Areas: Wheel arches, jacking points, underbody, door bottoms (typical for vehicles of this era). 📚 Vehicle History Brand Heritage Mercedes Benz Heritage: Known for engineering excellence, durability, and luxury in the automotive industry. Model Evolution W123 Lineage: The W123 series (1976-1985) succeeded the W114/W115 and was renowned for its robust build quality and reliability. The 280C variant represents the luxurious coupé version. Production Manufacturing Location: West Germany