Engine Mechanical:
Detailed coverage of engine disassembly, assembly, timing, lubrication, cooling, and emissions systems.
Fuel System:
In-depth diagnosis and repair of fuel injection systems (Bosch K-Jetronic), fuel pumps, lines, and filters.
Ignition System:
Troubleshooting and repair of ignition coils, distributors, spark plugs, and timing.
Transmission Manual:
Service and repair procedures for manual transmissions, including clutch operation and adjustments.
Transmission Automatic:
Comprehensive diagnostic and repair information for automatic transmissions (e.g., 4-speed 722.1).
Drivetrain:
Front suspension, rear axle, driveshaft, and differential servicing.
Brakes:
Detailed procedures for hydraulic system maintenance, brake pad/shoe replacement, caliper/wheel cylinder service, and parking brake.
Steering:
Power steering system diagnosis, repair, and fluid service.
Suspension:
Front and rear suspension component inspection, replacement, and alignment procedures.
Electrical System:
Extensive coverage including starter, alternator, battery, lighting, fuses, relays, and wiring diagrams.
Climate Control:
Diagnosis and repair of heating and ventilation systems.
Body And Trim:
Procedures for door panel removal, glass replacement, and interior trim adjustments.
Maintenance:
Routine maintenance tasks such as oil changes, filter replacements, and fluid level checks.
Troubleshooting:
Systematic diagnostic flowcharts and troubleshooting guides for common and uncommon issues.
Repair:
Step-by-step repair instructions for all major vehicle components.
Rebuilds:
Detailed procedures for engine and transmission rebuilds.
Electrical Diagnostics:
Combined troubleshooting and electrical service procedures with detailed wiring diagrams.
Level Of Detail:
Designed for both do-it-yourselfers and experienced mechanics; provides complete disassembly and reassembly instructions.
Visual Aid Quality:
Hundreds of photos, illustrations, and drawings for clear guidance.
Instruction Format:
Numbered instructions, detailed substeps, notes, cautions, and warnings.
Illustrations Highlighting:
Bold figure numbers to match illustrations with instructions, enlarged inset views for detailed part examination.
Compatibility:
Works on all PC-based Windows operating systems and Mac.
Storage And Usage:
Can be saved to hard drive, burned to CD-ROM.
Printability:
Printable without any restriction (entire manual or individual pages).
Binding:
Digital Download (implies no physical binding)
Paper Quality:
N/A (Digital Download)
Software Requirement:
Adobe PDF Reader
Method:
Download link available on checkout page after payment.
Advantages:
No shipping costs or waiting time for physical delivery.
Engine Type:
Inline 6-cylinder, 4-stroke
Engine Code:
M110.984 (typical for 280E in 1983)
Displacement:
2.8 Liters (2799 cc)
Bore X Stroke:
86.5 mm x 80.25 mm
Compression Ratio:
8.3:1 (typical)
Horsepower Net Approx:
185 PS (182 bhp; 136 kW) at 5800 rpm (DIN, typical for M110.984)
Torque Net Approx:
240 Nm (177 lb-ft) at 4500 rpm (DIN, typical for M110.984)
Fuel Delivery:
Bosch K-Jetronic CIS (Continuous Injection System)
Fuel Type:
Unleaded gasoline (Premium / Super)
Historical Safety Standards:
Designed to meet or exceed safety standards of its era, with a focus on structural integrity and occupant protection.
Braking System:
Four-wheel disc brakes (front ventilated), power assisted.
Chassis Design:
Reinforced safety cage, crumple zones.
Steering Column:
Collapsible steering column.
Oil Change Interval:
Typically every 7,500 - 15,000 km (4,500 - 9,000 miles) or 12 months, depending on driving conditions and oil used (refer to manual for exact recommendation).
Filter Replacement:
Oil filter with every oil change; air filter and fuel filter typically every 15,000 - 30,000 km (9,000 - 18,000 miles).
Engine Oil Grade:
API SF or SG, SAE 10W-30 or 10W-40 for general use; 20W-50 for higher temperatures (consult manual for precise MB approval).
Coolant Type:
Ethylene glycol based coolant with corrosion inhibitors (typically a 50/50 mix with distilled water).
Brake Fluid:
DOT 3 or DOT 4.
Automatic Transmission Fluid:
MB 236.2 or equivalent (e.g., Dexron II).
Common Problems:
Rust/corrosion (especially wheel arches, sills), vacuum line leaks affecting climate control and central locking, wear in suspension components, aging fuel lines, potential for head gasket leaks on high-mileage engines.
Electrical Quirks:
Dashboard warning lights, intermittent power issues due to aging wiring harnesses or connectors.
Manufacturer:
Mercedes-Benz, renowned for engineering excellence, durability, and luxury.
W123 Introduction:
The W123 series was introduced in 1976, replacing the W114/W115 series. It was known for its robust build quality and reliability.
W123 280E Positioning:
The 280E represented the upper echelon of the W123 range, offering a more powerful engine and refined features.
Production Years:
W123 series: 1976-1986. The 1983 model falls within the facelifted phase of the W123.
Key Market Appeal:
Popular in Europe and North America, valued for its build quality, comfort, and long-term durability.
Reputation For Durability:
The W123 series, including the 280E, gained a reputation as a highly durable and reliable vehicle, often referred to as a 'workhorse'.
Customer Satisfaction:
Consistently ranked high in customer satisfaction surveys for build quality and longevity during its production era.
Safety Compliance:
Met prevailing safety regulations of the 1980s, a testament to Mercedes-Benz's engineering focus.
