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1979-1992 Mercedes W126 SEL Service and Repair Manual

$16.99
$16.99
🏷️ Basic Information Identification Make: Mercedes-Benz Model: W126 SEL Generation: First Generation (1979-1991) Chassis Code: W126 Body Style: Long-wheelbase Sedan (SEL) Production Years Covered: 1979-1992 Codes Internal Model Code: W126...
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Taper: Car
Distributeur:
Mercedes
UGS: 511767
Mots clés: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 Car Cars Mercedes SEL W126
1979-1992 Mercedes W126 SEL Service and Repair Manual
🏷️ Basic Information
Identification
Make:
Mercedes-Benz
Model:
W126 SEL
Generation:
First Generation (1979-1991)
Chassis Code:
W126
Body Style:
Long-wheelbase Sedan (SEL)
Production Years Covered:
1979-1992
Codes
Internal Model Code:
W126
👋 Introduction
Market Position
Market Position:
Luxury Sedan, flagship model for Mercedes-Benz during its production run
Competitive Analysis
Competitive Analysis:
Competed with other high-end luxury sedans of its era, known for build quality, engineering, and comfort.
Key Features
Key Features:
Exceptional ride comfort, advanced safety features for its time, powerful yet refined engines, spacious interior, and sophisticated styling.
Manual Value Proposition
Manual Value Proposition:
Provides authorized repair information, empowering owners and independent technicians to maintain and repair the W126 SEL to factory standards.
Ease Of Use
Ease Of Use:
Digital format allows for quick searching, printing specific pages, and easy storage, eliminating the need for bulky physical manuals.
📋 Manual Details
Coverage Areas
Coverage Scope:
All models and all repairs A-Z for the W126 SEL
Page Count
Page Count:
N/A (Digital PDF)
Manual Type
Manual Type:
Factory Service and Repair Manual
Language
Language:
English
Format
Format:
PDF (Printable, Zoomable)
Digital Requirements
Digital Requirements:
Adobe PDF Reader, Winzip (Optional)
📖 Manual Coverage
Systems Covered
Engine Overhaul:
Complete engine disassembly, inspection, assembly, and tuning
Fuel System:
Fuel injection systems (Bosch K-Jetronic/KE-Jetronic), fuel pumps, injectors, fuel pressure regulators
Ignition System:
Ignition coils, distributors, spark plugs, ignition control modules
Cooling System:
Radiator, water pump, thermostat, cooling fans, hoses
Lubrication System:
Oil pump, oil filter, oil cooler, oil passages
Intake Exhaust Emissions:
Intake manifolds, exhaust systems, catalytic converters, emission control systems
Automatic Transmission:
4-speed Automatic Transmission (e.g., 722.3, 722.4) overhaul, adjustments, fluid service
Manual Transmission:
Availability and repair procedures for manual transmission variants (less common on SEL)
Drivetrain:
Driveshaft, universal joints, differential, axle shafts
Suspension:
Front and rear suspension components, struts, shocks, control arms, bushings
Steering:
Steering gear, power steering pump, steering linkages, steering column
Brakes:
Hydraulic brake system, master cylinder, brake calipers, brake pads, rotors, ABS (Antiblockiersystem) if equipped
Parking Brake:
Parking brake mechanism and adjustments
Electrical System:
12V electrical system, battery, alternator, starter, wiring harnesses
Lighting:
Headlights, taillights, interior lighting, auxiliary lighting
Instrumentation:
Instrument cluster, gauges, warning lights, sensors
Climate Control:
Air conditioning system, heater core, blower motor, climate control panel, refrigerant service
Body Exterior:
Body panels, doors, hood, trunk, bumpers, glass, mirrors, seals
Body Interior:
Seats, upholstery, door panels, dashboard, headliner, trim
Power Accessories:
Power windows, power seats, central locking, power mirrors, sunroof
Wiper Washer:
Wiper motor, washer pump, wiper blades, washer fluid reservoir
Audio Visual:
Radio, speakers, antenna, and associated wiring
Cruise Control:
Cruise control system components and troubleshooting
Supplemental Restraint System:
Airbag system components (if equipped), seat belt pre-tensioners
Engine Immobilizer:
Information regarding immobilizer systems if factory-equipped
Multiplex Can Communication:
Diagnostics and understanding of multiplexed electrical systems and CAN bus if applicable to later models in range
Procedures Included
Maintenance Procedures:
Oil changes, filter replacements, fluid checks and top-offs, tune-ups, belt inspections
Diagnostic Procedures:
Troubleshooting guides for common and uncommon issues, symptom-based diagnostics
Repair Procedures:
Detailed step-by-step instructions for component replacement and repair
Adjustment Procedures:
Valve adjustments, idle speed adjustments, brake adjustments, steering alignment checks
Wiring Schematics:
Complete and detailed wiring diagrams for all electrical systems
Technical Depth
Technical Depth:
Factory-level diagnostics, repair, and maintenance, covering basic to advanced procedures
Illustrations
Illustrations:
Numerous diagrams, exploded views, and line drawings to aid comprehension
Specifications
Specifications Included:
Torque values, fluid capacities, wear limits, engine data, electrical specifications
📊 Manual Specifications
File Format
File Format:
Portable Document Format (PDF)
Print Quality
Print Quality:
High-resolution, suitable for printing individual pages or sections
Binding Type
Binding Type:
N/A (Digital, no physical binding)
Paper Type
Paper Type:
N/A (Digital, no physical paper)
⚙️ Engine Specifications
Primary Engine
Engine Options:
M116 3.8L V8, M116 4.2L V8, M117 5.0L V8, M117 5.6L V8 (SEL models typically feature larger displacement V8s)
Performance
Horsepower Torque Ranges:
Varies by engine and year; typically 155-238 HP and 220-330 lb-ft torque
Fuel System
Fuel Injection Type:
Bosch K-Jetronic (CIS) or KE-Jetronic (CIS-E) Fuel Injection
Ignition Type
Ignition System:
Distributor-based, breakerless electronic ignition
Cooling Type
Cooling System:
Liquid-cooled, thermostatically controlled
🔧 Transmission
Standard
Transmission Type:
4-speed Automatic Transmission (e.g., 722.3 or 722.4)
Optional
Optional Transmission:
Manual transmission was rarely offered on SEL models, but covered if applicable to specific market variations.
Features
Transmission Features:
Hydraulically controlled, with torque converter
📐 Dimensions
Exterior
Wheelbase Sel:
Approximately 116.7 inches (2964 mm)
Overall Length Sel:
Approximately 201.3 inches (5113 mm)
Weights
Curb Weight:
Approximately 3900-4300 lbs (1770-1950 kg), depending on engine and options
Gross Vehicle Weight Rating:
Typically around 5000-5300 lbs (2270-2400 kg)
🛡️ Safety Features
Ratings
Crash Test Ratings:
N/A for modern standardized ratings, but built to high safety standards of the era.
Active Features
Active Safety Features:
Four-wheel disc brakes, Anti-lock Braking System (ABS) availability on later models.
Passive Features
Passive Safety Features:
Reinforced safety cage, crumple zones, dual front airbags (later models), padded interior surfaces, seat belt pretensioners.
💡 Technology Features
Infotainment
Infotainment Features:
AM/FM radio, cassette player, power antenna, speaker systems. Early models may have analog controls, later ones may have digital displays.
Driver Assistance
Driver Assistance Features:
ABS (Antiblockiersystem) on later models, cruise control.
Connectivity
Connectivity Features:
Limited by era; primarily focused on internal vehicle systems. External connectivity features were not prevalent.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically every 5,000-7,500 miles (8,000-12,000 km) or annually, depending on driving conditions.
Major Service Intervals:
Key services often at 30,000, 60,000, and 100,000 miles, involving spark plug replacement, fuel filter, coolant, transmission service.
Fluid Specifications
Engine Oil Spec:
API SG or higher, SAE 15W-40 or 10W-40 (consult specific owner's manual for precise viscosity based on climate).
Transmission Fluid Spec:
MB 236.1 approved Automatic Transmission Fluid (ATF), such as Dexron III or equivalent.
Coolant Spec:
Proprietary Mercedes-Benz coolant or an equivalent antifreeze with corrosion inhibitors, typically a 50/50 mix with distilled water.
Known Issues
Known Issues W126:
Timing chain guides (on M117 engines), fuel distributor leaks, climate control system issues (vacuum leaks, blower motor), wiring harness degradation, ABS sensor failures, window regulator failures.
Common Repairs
Common Repair Focus:
Emphasis on systematic troubleshooting of fuel injection, ignition, and vacuum systems for optimal performance and emissions.
📚 Vehicle History
Brand Heritage
Brand Heritage:
Mercedes-Benz is renowned for its engineering excellence, luxury, and longevity.
Model Evolution
Model Evolution W126:
The W126 S-Class replaced the W116 and was a significant advancement in design, engineering, and safety. The SEL designation signifies the long-wheelbase version, offering increased rear passenger space.
Production
Production Location:
Sindelfingen, Germany
Production Volume:
Significant production run for the W126 series globally.
🏆 Awards & Recognition
Recognitions
Automotive Recognitions:
The W126 series was widely acclaimed for its engineering, comfort, and luxury, often cited as one of the best sedans of its era by automotive journalists.
Ratings
Quality Longevity Ratings:
Consistently ranked high for build quality and long-term durability, a hallmark of Mercedes-Benz engineering.
Certifications
Certifications:
N/A for general certifications, but adherence to stringent German automotive manufacturing standards.
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