Mercedes Benz 280 W114 & W115 Series Complete Workshop Service Repair Manual 1973 1974 1975 1976

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Basic Information Identification Make: Mercedes-Benz Model: 280 Chassis Series: W114 & W115 Years Covered: 1973, 1974, 1975, 1976 Codes Chassis Code W114: W114 (often referred to as the 'Stroke 8'...

Tipo: Cars

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SKU: 160783

Etiquetas: Mercedes W115

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Descripción

Basic Information
Identification
Make:	Mercedes-Benz
Model:	280
Chassis Series:	W114 & W115
Years Covered:	1973, 1974, 1975, 1976
Codes
Chassis Code W114:	W114 (often referred to as the 'Stroke 8' or 'New Generation' compact executive sedan)
Chassis Code W115:	W115 (shared chassis design with W114, typically with simpler engine options)

Introduction
Market Position
Era Positioning:	The Mercedes-Benz W114/W115 series represented Mercedes-Benz's entry into a more compact executive sedan market, balancing luxury, engineering quality, and a more accessible price point compared to larger S-Class models.
Competitive Analysis
Competitors:	Competed with vehicles like BMW 3.0 CS, Alfa Romeo Alfetta, Jaguar XJ6 (though larger), and high-end offerings from American manufacturers depending on market.
Key Features
Engineering Focus:	Robust engineering, advanced (for the time) suspension, comfortable ride, build quality.
Target Audience:	Professionals, families seeking a reliable and prestigious European sedan.

Manual Details
Coverage Areas
Main Coverage:	Complete Service and Repair Procedures
Scope:	All Models, Engines, Trim Levels, and Transmission Types within the specified W114/W115 series years.
Page Count
Estimated Pages:	Approximately 600-900 pages (typical for comprehensive Mercedes-Benz workshop manuals of this era, exact count not specified in product info but implied by 'complete').
Manual Type
Type:	Workshop Service Repair Manual
Language
Language:	English (based on product description language)
Format
Digital Format:	Downloadable PDF

Manual Coverage
Systems Covered
Powertrain:	Engine (maintenance, overhaul, tuning), Fuel System (carburetor/injection), Cooling System, Exhaust System.
Drivetrain:	Transmission (manual and automatic), Clutch, Driveshafts, Differentials, Axles.
Suspension Steering:	Front and Rear Suspension (independent/semi-independent), Shock Absorbers, Springs, Steering System (power steering components).
Brakes:	Brake System (hydraulic, disc/drum configurations), Parking Brake, Fluid Maintenance.
Electrical:	Electrical System, Battery, Charging System (alternator), Ignition System, Lighting, Instrumentation, Starter Motor, Wiring Diagrams.
Body Chassis:	Bodywork Repair, Doors, Windows, Upholstery, Chassis Lubrication, Structural Components.
Procedures Included
Maintenance:	Routine Maintenance Checks, Oil Changes, Filter Replacements, Lubrication Schedules, Tune-ups.
Repair Overhaul:	Engine Rebuilding, Transmission Overhaul, Suspension Component Replacement, Brake System Repairs, Electrical Component Diagnosis and Repair.
Diagnostics:	Troubleshooting Guides for common problems, Diagnostic procedures for various systems.
Adjustments:	Carburetor Adjustment, Ignition Timing, Valve Clearance, Brake Adjustment.
Technical Depth
Depth:	Comprehensive, covering basic maintenance to complete engine and transmission rebuilds, including detailed specifications and diagnostic steps.

Manual Specifications
File Format
Format:	PDF (Portable Document Format)
Searchability:	Likely text-searchable if a good quality scan/OCR was performed on the original document.
Print Quality
Printability:	High quality, allowing printing of individual pages, chapters, or the entire manual.
Binding Type
Digital Binding:	N/A (Digital Download)
Paper Type
Digital Paper Type:	N/A (Digital Download)

Engine Specifications
Primary Engine
W114 280 Engine:	M130 - 2.8L (2778 cc) SOHC Inline-6
Performance
W114 280 Horsepower:	Approximately 156 hp (SAE Gross) at 5500 rpm (for early models, slightly different for later fuel injection variants).
W114 280 Torque:	Approximately 177 lb-ft (240 Nm) at 3500 rpm (for early models).
Fuel System
W114 280 Fuel System:	Dual Solex Zenith 35/40 INAT carburetors (early) or Bosch D-Jetronic fuel injection (later models, e.g., 280E).
Engine Variant W115
W115 Engine Options:	While '280' typically refers to the W114, the W115 chassis could also accommodate engines like the M114 (2.3L Inline-6) or various diesel engines. This manual explicitly covers the '280' model, implying the M130 engine in W114/W115 configurations.

Transmission
Standard
W114 280 Transmission:	4-speed Manual Transmission
Optional
W114 280 Optional Transmission:	Optional 4-speed or 3-speed Automatic Transmission (often the 'Hydrak' system or later torque converter automatics like the 722.1).
Features
Automatic Transmission Features:	Smooth shifting, robust design typical of Mercedes-Benz engineering.
Fluid Type
Automatic Transmission Fluid Spec:	Refer to manual for specific MB fluid specification (likely Dexron II or equivalent for period automatics).

Dimensions
Exterior
W114 Wheelbase:	Approximately 2710 mm (106.7 inches)
W114 Length:	Approximately 4680 mm (184.3 inches)
W115 Wheelbase:	Approximately 2710 mm (106.7 inches) - identical to W114
W115 Length:	Approximately 4680 mm (184.3 inches) - identical to W114
Weights
Curb Weight:	Approximately 1450-1550 kg (3197-3417 lbs) depending on engine and equipment.
Gross Vehicle Weight:	Refer to specific model plate in manual.
Tire Size
Standard Tire Size:	Typically 185 HR 14 or 195/70 R14. Exact specification in manual.
Wheel Bolt Pattern
Bolt Pattern:	5x112 mm

Safety Features
Ratings
Crash Safety Era:	Designed to meet safety standards of the 1970s. Emphasized passive safety with a strong chassis and safety cell structure. Modern crash test ratings are not applicable.
Active Features
Braking System:	Front Disc Brakes, Rear Drum Brakes. Power assisted.
Passive Features
Body Structure:	Reinforced passenger compartment, collapsible steering column, safety glass.
Seatbelts:	Standard seatbelts, likely lap belts in the rear, 3-point belts in the front.

Technology Features
Infotainment
Radio:	Typically analog radio receivers, often with AM/FM bands. Optional cassette players might have been available on later models.
Speakers:	Limited speaker count, often two in the front doors or dashboard.
Driver Assistance
Cruise Control:	Optional on some models, a fairly advanced feature for the mid-1970s.
Air Conditioning:	Factory or dealer-installed air conditioning was an optional feature.
Connectivity
Connectivity Features:	None in the modern sense; limited to radio reception.

Maintenance
Service Intervals
Oil Change Interval:	Typically every 5,000-7,500 km (3,000-4,500 miles) or 6 months, depending on driving conditions. Manual will provide exact recommendation.
Major Tune Up Interval:	Spark plugs, ignition points (if applicable), fuel filter, air filter typically every 15,000-25,000 km (9,000-15,000 miles).
Transmission Fluid Service:	Automatic transmission fluid and filter change usually every 30,000-50,000 km (20,000-30,000 miles).
Fluid Specifications
Engine Oil Spec:	Refer to manual for specific API service classification and viscosity grade (e.g., SAE 10W-40, 20W-50 depending on climate). Likely an oil meeting MB 227.1 or equivalent.
Coolant Spec:	Ethylene glycol based coolant, mixed with distilled water at a 50/50 ratio. Refer to manual for specific MB specification (likely a phosphate-free, silicate-free coolant meeting DIN 71700).
Brake Fluid Spec:	DOT 3 or DOT 4 glycol-based brake fluid. Manual will specify the exact requirement.
Known Issues
Common Wear Items:	Rubber bushings in suspension and steering, fuel lines, vacuum hoses (prone to perishing), distributor points and condenser (if applicable), radiator hoses.
Corrosion:	As with many vehicles of this era, rust can be a concern, particularly in wheel wells, rocker panels, and around window seals.
Carburetor Issues:	Zenith carburetors can require periodic adjustment or rebuild due to wear or gumming from fuel degradation.

Vehicle History
Brand Heritage
Mercedes Benz Legacy:	Mercedes-Benz has a long-standing reputation for engineering excellence, safety, and luxury, dating back to the late 19th century.
Model Evolution
W114 W115 Introduction:	Introduced in 1968 (W114) and 1969 (W115) as a replacement for the W110 ('Fintail'). The 'Stroke 8' models were a significant step forward in design and engineering for Mercedes-Benz compact sedans.
Design Philosophy:	Characterized by clean lines, a monocoque construction, and a focus on mechanical refinement, moving away from older body-on-frame designs for this class.
Production
Production Years:	W114/W115 series: 1968-1976.
Manufacturing Location:	Primarily Germany.

Awards & Recognition
Recognitions
Design Awards:	While specific design awards for the W114/W115 are not widely publicized, the series was lauded for its clean, modern design language that influenced automotive styling.
Ratings
Reliability Reputation:	The W114/W115 series are generally considered very reliable and durable vehicles, a hallmark of Mercedes-Benz engineering of the period.
Certifications
Automotive Press Reviews:	Contemporary automotive press highly praised the build quality, driving dynamics, and comfort of these models.