Vehicle Segment:
Luxury Grand Tourer Coupe
Manual Purpose:
To provide comprehensive, vehicle-specific repair and maintenance information for the 1987 Mercedes-Benz W126 SEC.
Format Advantage:
Digital PDF format offers easy navigation, searchability, and selective printing, reducing wear and tear on physical manuals.
Accuracy:
Authentic factory documentation used by dealership technicians, ensuring accuracy and reliability.
Engine Coverage:
All engine variants for 1987 W126 SEC models
Transmission Coverage:
Automatic Transmission (4-speed)
Electrical System Coverage:
Complete wiring schematics and component diagnostics
Chassis Coverage:
Suspension, steering, brakes, exhaust
Body And Interior Coverage:
Doors, windows, seats, trim, climate control
Estimated Page Count:
Detailed technical manual with likely hundreds of pages (specific count not provided, but implies comprehensive coverage)
Type:
Factory Service and Repair Manual
Engine Mechanical:
Engine assembly, disassembly, valve train, lubrication, cooling system, fuel delivery, ignition system
Engine Control System:
Fuel injection system (Bosch K-Jetronic or KE-Jetronic depending on specific engine variant), ignition timing, sensor diagnostics
Emission Control:
Catalytic converter systems, secondary air injection, exhaust gas recirculation (if applicable)
Transmission And Drivetrain:
Automatic transmission service, torque converter, driveshaft, differential, rear axle assembly
Suspension And Steering:
Front and rear suspension, shock absorbers, springs, power steering system, steering column
Brakes:
Hydraulic brake system, ABS (Anti-lock Braking System), parking brake, brake fluid specifications
Climate Control:
Air conditioning system servicing, heater core, ventilation, refrigerant specifications
Electrical Components:
Lighting, wipers, washers, horn, instrumentation, power windows, central locking, cruise control
Body And Trim:
Door mechanisms, glass replacement, interior trim removal, exterior panel repair
Maintenance Procedures:
Regular servicing, oil changes, filter replacements, spark plug replacement, fluid checks and changes
Diagnostic Procedures:
Troubleshooting guides for common issues, fault code interpretation (if applicable), electrical system testing
Repair Procedures:
Step-by-step instructions for component removal, repair, and reinstallation
Rebuild Procedures:
Detailed procedures for major component overhauls (e.g., engine, transmission)
Depth Of Information:
Factory-level technical detail, including specialized tools, torque specifications, and diagnostic data
Printability:
Fully printable, allowing users to select and print specific pages or diagrams
Binding:
N/A (Digital Format)
Paper:
N/A (Digital Format)
Software Requirements:
Adobe PDF Reader, Winzip (or similar decompression utility)
Operating Systems:
Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac compatible
Engine Code Example:
M116 (3.0L V8) or M117 (4.2L or 5.0L V8) - specific to 1987 SEC models
Engine Type:
V8, naturally aspirated
Horsepower Range Example:
Approximately 180-230 hp (depending on engine size and market configuration)
Torque Range Example:
Approximately 230-330 lb-ft (depending on engine size and market configuration)
Fuel Injection System:
Bosch K-Jetronic or KE-Jetronic mechanical fuel injection
Engine Oil Type:
API SG or higher, viscosity SAE 15W-40 or 10W-40 (check manual for exact specification for given climate)
Coolant Type:
Mercedes-Benz Approved Antifreeze/Coolant (e.g., G48, a silicate-free OAT coolant)
Type:
4-speed Automatic Transmission (e.g., 722.3)
Shift Modes:
Comfort/Sport modes (depending on model year and specific transmission variant)
Transmission Fluid Type:
MB 236.1 or MB 236.3 Automatic Transmission Fluid (ATF), typically Dexron-II compatible variants
Airbags:
Driver's side airbag typically standard, passenger airbag optional or not available on all 1987 models
Seat Belts:
3-point seat belts front and rear, with pre-tensioners for front occupants
ABS:
Anti-lock Braking System (ABS) available/standard depending on model variant
Traction Control:
Acceleration Skid Control (ASR) not typically standard on 1987 models, but may be present on later W126 variants
Audio System:
Factory premium sound system with AM/FM radio and cassette player, optional CD changer
Cruise Control:
Standard cruise control system
Climate Control:
Automatic climate control with electronic temperature regulation
Seats:
Power-adjustable front seats with memory function, heated seats optional
Oil Change Interval:
Typically every 5,000-7,500 miles or 12 months, whichever comes first (consult specific manual for exact recommendation)
Major Service Interval:
Major inspections and fluid changes often recommended around 15,000-30,000 miles
Power Steering Fluid:
MB 236.3 or equivalent hydraulic fluid
Common Wear Items:
Fuel distributor seals, vacuum lines, transmission detent star, climate control O-rings, blower motor resistors, window regulators
Electrical Concerns:
Wiring harness degradation (especially insulation on ignition wires), headlight switch failures
Engine Performance Issues:
Hesitation or rough running due to aging K-Jetronic fuel system components, incorrect fuel pressure
Brand Legacy:
Mercedes-Benz renowned for engineering excellence, safety, and luxury, established in the late 19th century.
W126 Generation:
Second generation S-Class coupe (C126 chassis), successor to the C107 SEC.
W126 Sec Debut:
Introduced in 1981, known for its elegant pillarless coupe design and advanced features for its era.
Production Years:
1981-1991
Manufacturing Location:
Sindelfingen, West Germany
