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Mercedes

Mercedes 380 SEC 1982-1983 Service Repair Manual

Mercedes 380 SEC 1982-1983 Service Repair Manual

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$16.99
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Vehicle data plateRef 375019
Brand
Mercedes
Vehicle
Cars
Models covered
380, 380 SEC
Years
1982, 1983
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

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🏷️ Basic Information
Identification
Make:
Mercedes-Benz
Model:
380 SEC
Chassis Code:
C107
Model Years Covered:
1982-1983
Codes
Engine Code:
M116 (3.8L V8)
👋 Introduction
Market Position
Vehicle Segment:
Luxury Grand Tourer / Personal Luxury Coupe
Target Audience:
Affluent buyers seeking refined styling, comfortable cruising, and Mercedes-Benz engineering.
Competitive Analysis
Key Competitors:
BMW 6 Series (E24), Jaguar XJ-S, Cadillac Eldorado, Rolls-Royce Corniche.
Key Features
Design Philosophy:
Elegant, pillarless coupe design emphasizing aerodynamic lines and premium comfort.
Engineering Focus:
Robust mechanicals, advanced (for its time) fuel injection, and sophisticated chassis dynamics.
Manual Value Proposition
Benefit To Owner:
Empowers owners and technicians with detailed knowledge to maintain and repair the vehicle effectively, preserving its value and performance.
📋 Manual Details
Coverage Areas
Primary Coverage:
Service and Repair
Secondary Coverage:
Maintenance, Troubleshooting, Diagnostics
Page Count
Estimated Page Count:
Varies by specific year manual, generally extensive for comprehensive coverage.
Manual Type
Type:
Factory-Style Service Repair Manual
Language
Language:
English
Format
Format:
PDF / WINRAR (Digital Download)
📖 Manual Coverage
Systems Covered
Engine Mechanical:
Engine overhaul, cylinder head, crankshaft, pistons, connecting rods, camshafts, timing system, lubrication system, cooling system, fuel system (including injection).
Engine Electrical:
Ignition system, starting system, charging system, fuel injection control unit (ECU), sensors, warning lamps.
Transmission:
Manual and Automatic Transmission overhaul, fluid changes, diagnostics, clutches.
Drivetrain:
Driveshaft, universal joints, flexible couplings, rear axle, front axle (if applicable for specific sub-models, though SEC is typically RWD).
Suspension Steering:
Front and rear suspension components, shock absorbers, springs, control arms, ball joints, steering system, power steering, level control systems (e.g., ADS).
Brakes:
Brake system hydraulics, brake pads, brake discs, brake lines, parking brake, ABS (if equipped).
Body Chassis:
Body structure inspection, water leakage, corrosion, door hinges, locks, hood, sunroof, convertible top mechanisms (for SEC, it's a pillarless hardtop), exterior panels, noise encapsulation.
HVAC:
Heating and ventilation system, air conditioning system, refrigerant charge, filters (dust, charcoal, recirculating air).
Electrical Body:
Lighting (headlamps, exterior lamps), windshield wipers and washers, antennas, battery, warning and indicator lamps.
Procedures Included
Maintenance:
Oil and filter changes, fluid level checks and corrections, filter replacements, belt inspections and adjustments, spark plug replacement, fuel filter replacement, valve clearance adjustments.
Troubleshooting:
Diagnosis of vehicle problems, inspection of components, lines, and hoses, identifying causes of issues.
Repair Rebuild:
Disassembly, inspection of parts for reuse, rebuilding of components (e.g., engine, transmission, suspension), assembly procedures.
Adjustment:
Idle speed adjustment, injection timing adjustment, valve clearance adjustment, parking brake adjustment, steering bolt tightening, rear axle mount limiting stop adjustment.
Lubrication:
Throttle linkage lubrication, door hinge lubrication, door lock lubrication, sunroof rail lubrication, folding side mirror lubrication.
Technical Depth
Depth:
Comprehensive, covering routine maintenance, in-depth diagnostics, component overhaul, and troubleshooting.
📊 Manual Specifications
File Format
Digital Format:
PDF and WINRAR archive. PDF is typically searchable and printable.
Print Quality
Quality Description:
High-resolution digital scans or professionally formatted documents, ensuring clear diagrams and text.
Binding Type
Binding Type:
Not applicable (Digital format)
Paper Type
Paper Type:
Not applicable (Digital format)
⚙️ Engine Specifications
Primary Engine
Engine Type:
V8, SOHC (Single Overhead Camshaft)
Displacement:
3.8 liters (3839 cc)
Bore X Stroke:
86.0 mm x 80.25 mm
Performance
Horsepower Est:
Approximately 155-160 hp @ 4750 rpm (US Spec)
Torque Est:
Approximately 196-200 lb-ft @ 2500 rpm (US Spec)
Fuel System
Fuel Delivery:
Bosch K-Jetronic (CIS - Continuous Injection System)
Fuel Type:
Unleaded gasoline (premium recommended)
Lubrication
Oil Capacity Qt:
Approximately 8.5 quarts (with filter)
Cooling
Coolant Capacity Qt:
Approximately 10.5 quarts
🔧 Transmission
Standard
Transmission Type:
4-speed Automatic (e.g., 4G-TRONIC)
Optional
Transmission Type:
Not typically offered with manual transmission for SEC models of this era.
Features
Fluid Type:
MB Automatic Transmission Fluid (ATF) - e.g., MB 236.1 spec
Fluid Capacity Qt Auto:
Approximately 8.0-8.5 quarts (pan removal)
📐 Dimensions
Exterior
Length In:
Approx. 193.3 inches
Width In:
Approx. 70.7 inches
Height In:
Approx. 53.7 inches
Wheelbase In:
Approx. 115.6 inches
Weights
Curb Weight Lbs:
Approx. 3700-3800 lbs
🛡️ Safety Features
Ratings
Crash Test Info:
Data from this era is limited compared to modern standards. Focus on structural integrity and passive safety features of the time.
Active Features
Braking System:
Four-wheel disc brakes, often with ABS (Anti-lock Braking System) as an option or standard depending on market.
Passive Features
Seat Belts:
Front seat belts with pretensioners (likely standard), rear seat belts.
Body Construction:
Reinforced passenger cell, energy-absorbing crumple zones.
💡 Technology Features
Infotainment
Audio System:
Factory installed AM/FM stereo with cassette player. Often featured premium sound options.
Climate Control:
Automatic Climate Control (ACC) or manual HVAC systems with advanced ventilation.
Driver Assistance
ABS:
Anti-lock Braking System (ABS) was a significant technological feature for its time, often optional.
Level Control:
Hydropneumatic self-leveling suspension (ADS - Automatic Damping System) available on some models for enhanced ride comfort and handling.
🔧 Maintenance
Service Intervals
Oil Change Interval Miles:
Approximately every 5,000 - 7,500 miles, or annually.
Transmission Fluid Change Miles:
Recommended every 30,000 - 50,000 miles, or as per manual guidance.
Spark Plug Replacement Miles:
Typically around 30,000 miles, depending on type.
Fluid Specifications
Engine Oil Viscosity:
e.g., 15W-40 or 20W-50, depending on climate. Refer to manual for specific MB approval numbers.
Coolant Type:
Ethylene glycol-based antifreeze, typically a 50/50 mix with distilled water.
Known Issues
Fuel System Aging:
Degradation of rubber fuel lines, injector seals, and fuel distributor components due to age and fuel composition.
Suspension Wear:
Wear in ball joints, tie rod ends, and bushings leading to steering looseness and ride quality degradation.
Electrical Corrosion:
Corrosion in connectors and wiring harnesses, especially in areas exposed to moisture.
Engine Mounts:
Hydraulic engine mounts can degrade, leading to increased vibration.
📚 Vehicle History
Brand Heritage
Heritage Statement:
Mercedes-Benz established a reputation for engineering excellence, durability, and luxury throughout the 20th century.
Model Evolution
Platform Basis:
Based on the R107 SL roadster platform, sharing many mechanical components and styling cues.
Generation Significance:
The C107 SEC represented the coupe iteration of Mercedes-Benz's successful SL roadster line, offering a more spacious and luxurious coupe experience.
Production
Production Period:
The C107 chassis was produced from 1971 to 1989. The 380 SEC variant specifically covered the earlier part of this range.
Manufacturing Location:
Germany
🏆 Awards & Recognition
Recognitions
Automotive Excellence:
While specific awards for the 380 SEC from 1982-83 may not be widely cataloged, the C107 chassis and Mercedes-Benz brand consistently received accolades for build quality, safety, and luxury. It was widely regarded as a benchmark in the personal luxury coupe segment.

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Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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