Target Audience:
DIY Enthusiasts, Independent Repair Shops, Mercedes-Benz Owners
Value Proposition:
Provides the same level of detail as factory manuals used by dealership technicians, enabling cost savings through DIY repairs.
Ease Of Use:
Digital format allows for easy navigation, printing of specific pages, and avoids physical wear and tear of traditional manuals.
Completeness:
Covers every single detail of the vehicle from basic maintenance to complex overhauls.
Cost Savings:
Empowers owners to perform their own repairs, leading to significant cost savings on labor.
Information Source:
Provides vehicle-specific information, mirroring the factory service manuals.
Engine:
Engine Overhaul and Rebuilding, Engine Performance, Firing Orders
Brakes:
Brake Servicing Procedures, Brake System Components
Transmission:
Transmission Removal and Installation, In-Car Servicing
Electrical:
Complete Wiring Diagrams, Computer Diagnostic Trouble Tree Charts
Suspension Steering:
Front End and Alignment Procedures and Specifications, Suspension System
Body Chassis:
Sunroof Service, U-Joint and CV-Joint Service Procedures
Climate Control:
Air Conditioning Service and Capacities
Fuel System:
Detailed diagnostics and repair for both diesel mechanical injection and petrol fuel injection systems.
Cooling System:
Radiator, water pump, thermostat, hoses, and fan assembly service.
Exhaust System:
Component identification, inspection, and replacement procedures.
Steering System:
Power steering pump, steering gearbox, linkage, and alignment specifications.
Body Electrical:
Lighting, power windows, central locking, mirrors, seats, and instrument cluster diagnostics.
Maintenance:
Factory Maintenance Schedules and Charts
Diagnostics:
Troubleshooting and Diagnostics, Trouble Codes, Computer Diagnostic Codes
Repair:
Repair Procedures, Detailed Specifications on Every Model Covered
Timing:
Timing Belt Replacement, Timing Belt Service Procedures
Lubrication:
Lubrication points and recommended lubricants.
Diagnostics Tools:
Guidance on using diagnostic tools and interpreting error codes.
Belt Replacement:
Serpentine belt routings with diagrams and replacement procedures.
Depth:
Comprehensive (Dealership Technician Level)
Detail Level:
Vehicle-Specific, Step-by-Step Instructions, Hundreds of Illustrations
Diagrams Illustrations:
Hundreds of clear diagrams and step-by-step illustrations.
Diagnostic Charts:
Computer diagnostic trouble tree charts and diagnostic trouble codes (DTCs) for various ECUs.
Compatibility:
Adobe PDF Reader, WinZip
Access Method:
Instant Download
Operating System Compatibility:
All Versions of Windows & Mac
Printability:
All pages printable, zoom in/out capability for enlarged copies
Digital Resolution:
High resolution for clear viewing and printing of diagrams and text.
Format Type:
Digital Download (PDF/HTML/SWF)
Digital Features:
Bookmarked, Searchable
Engine Variants:
Inline-6 Diesels (OM617, OM603), V8 (M116, M117), V8 (M119 - later models)
Diesel Engines Covered:
300SD (OM617.951), 300SDL (OM603.961)
Petrol Engines Covered:
380 SE/SEL (M116.960), 500 SEL/SEC (M117.960/M117.968), 380 SEC (M116.962), 420 SEL (M116.968), 560 SEL/SEC (M117.967)
Torque Specifications:
Complete torque specifications for all engine components included.
Horsepower Torque Notes:
Detailed specifications for each engine variant are included, enabling accurate performance assessment and troubleshooting.
Fuel Delivery Systems:
Covers mechanical fuel injection (diesel) and Bosch KE-Jetronic/LH-Jetronic (petrol) systems.
Transmission Types:
4-speed Automatic (722.3, 722.4), 5-speed Manual (rare for some models)
Transmission Options:
Varies by specific model and market, primarily automatic transmissions.
Transmission Service:
In-car servicing procedures for automatic transmissions are detailed.
Body Styles:
Sedan (SE/SEL), Coupe (SEC)
Interior Features:
Focus on comfort, luxury, and ergonomic design as per Mercedes-Benz standards of the era.
Curb Weight Range:
Approx. 3,700 - 4,200 lbs (1680 - 1900 kg) depending on engine and options.
Safety Standards:
Adheres to rigorous Mercedes-Benz safety engineering standards of the 1980s and early 1990s.
Active Safety:
ABS (Anti-lock Braking System) standard on most models later in production, disc brakes on all wheels.
Passive Safety:
Reinforced passenger compartment, driver's airbag (optional/standard on later models), seatbelt pretensioners.
Audio Systems:
Factory installed premium audio systems with cassette players and analog tuners. Manual covers diagnostics and potential upgrades.
Assistance Systems:
ABS, cruise control, power adjustable steering column, power seats with memory.
Early Electronics:
Focus on sophisticated (for the era) climate control, power accessories, and engine management electronics.
Typical Intervals:
Oil changes typically every 5,000-7,500 miles, major services at 30,000, 60,000 miles (details specific to engine and model).
Engine Oil:
e.g., SAE 15W-40 or 20W-50 for diesels, SAE 10W-30 or 10W-40 for petrol engines (specific viscosity depends on climate and engine variant, refer to manual for precise MB approval numbers).
Coolant:
Mercedes-Benz approved coolant (e.g., G48, typically a silicate-free, ethylene glycol-based mixture).
Transmission Fluid:
e.g., ATF Dexron II or compatible MB approved fluid (specific type critical for automatic transmission longevity).
Brake Fluid:
DOT 3 or DOT 4 brake fluid (MB approval recommended).
Power Steering Fluid:
Hydraulic fluid meeting MB specifications (e.g., MB 236.3).
Common Wear Items:
Vacuum leaks (climate control, central locking), aging rubber hoses and bushings, fuel distributor seals (petrol), head gasket (some V8s), window regulators, blower motor resistor.
Electrical Common Problems:
Wiring harness degradation (especially in the engine bay), faulty climate control modules, door lock actuators.
Engine Common Problems:
Head gasket leaks on some V8 models, timing chain stretching on higher mileage engines (M117/M116), glow plug system issues on diesels.
Brand Legacy:
Mercedes-Benz is renowned for engineering excellence, luxury, and durability.
W126 Introduction:
The W126, introduced in 1979, represented a significant evolution in the S-Class line, focusing on aerodynamics, safety, and fuel efficiency.
Production Years:
1979-1991 (manual covers 1981-1991 models)
Key Updates:
Mid-cycle facelift in 1985 brought updated styling, new engines (like the 300 SDL, 420 SEL, 560 SEL/SEC), and improved technology.
