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Mercedes-Benz 350SD w126 1991 Factory Workshop Service Repair Manual

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$17.99
🏷️ Basic Information Identification Make: Mercedes-Benz Model: 350SD Chassis Code: W126 Model Year: 1991 Codes Engine Code: OM603.960 👋 Introduction Market Position Target Audience: Mercedes-Benz owners (DIY enthusiasts), independent repair...
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Type: Car
Vendor:
Mercedes-benz
Sku: 357798
Tags: 1991 350SD Car Cars Featured Mercedes Mercedes-benz W126
Mercedes-Benz 350SD w126 1991 Factory Workshop Service Repair Manual
🏷️ Basic Information
Identification
Make:
Mercedes-Benz
Model:
350SD
Chassis Code:
W126
Model Year:
1991
Codes
Engine Code:
OM603.960
👋 Introduction
Market Position
Target Audience:
Mercedes-Benz owners (DIY enthusiasts), independent repair shops, Mercedes-Benz technicians
Competitive Analysis
Advantage:
Provides factory-level accuracy and detail, unlike generic aftermarket manuals.
Key Features
Authenticity:
Directly mirrors the documentation used by authorized Mercedes-Benz service centers.
Comprehensiveness:
Covers all aspects of vehicle service and repair, ensuring no critical information is omitted.
📋 Manual Details
Coverage Areas
Primary Coverage:
Service and Repair
Engine Systems:
Diesel Engine (OM603.960), Fuel System, Lubrication System, Cooling System, Air Intake and Exhaust, Emission Control
Drivetrain Systems:
Automatic Transmission (722.5), Drive Shaft, Differential
Chassis Systems:
Suspension (Front & Rear), Steering System, Brakes (Hydraulic System, ABS)
Electrical Systems:
Engine Management, Lighting, Instrumentation, Power Accessories, Climate Control, Battery, Charging System
Body And Interior:
Body Panels, Doors, Windows, Seats, Upholstery, Trim, HVAC Ducts
Page Count
Estimated Page Count:
Over 1500 (estimated for comprehensive factory manual)
Manual Type
Type:
Factory Workshop Service Repair Manual
Language
Language:
English
Format
Format:
HTML/Flash Menu with PDF content
Compatibility:
Windows (95/98/ME/XP/Vista/7), Linux, macOS
📖 Manual Coverage
Systems Covered
All Major Systems:
Yes
Procedures Included
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, inspections
Diagnostics:
Troubleshooting charts, fault code interpretation, diagnostic procedures
Repair Procedures:
Engine component removal/installation/rebuild, transmission overhaul, brake system repair, suspension component replacement, electrical component repair
Adjustments:
Valve adjustments, timing adjustments, idle speed settings
Installation:
Accessory installation, component replacement guidelines
Technical Depth
Depth:
Comprehensive - from basic maintenance to complete engine and transmission rebuilds
Diagnostic Tools:
Includes procedures for using specialized diagnostic tools and equipment common at Mercedes-Benz dealerships.
📊 Manual Specifications
File Format
Media Type:
Digital Download
Print Quality
Image Resolution:
High (typical for factory PDFs)
Binding Type
Binding:
N/A (Digital Format)
Paper Type
Paper Type:
N/A (Digital Format)
Searchability
Text Search:
Searchable PDF content
Interactivity
Navigation:
Interactive HTML/Flash menu for easy navigation
⚙️ Engine Specifications
Primary Engine
Engine Type:
Inline 6-Cylinder Turbocharged Diesel
Displacement:
3.5 Liters (3449 cc)
Bore X Stroke:
87.0 mm x 92.4 mm
Compression Ratio:
22.0:1
Performance
Horsepower Net:
134 hp @ 4600 rpm
Torque Net:
217 lb-ft @ 2400 rpm
Fuel System
Injection System:
Bosch Inline Injection Pump (VE type)
Fuel Type:
Diesel Fuel
Lubrication System
Oil Capacity With Filter:
7.5 Liters (8.0 US Quarts)
Recommended Oil Viscosity:
SAE 15W-40 Diesel Engine Oil (API CD or higher)
Cooling System
Coolant Capacity:
11.0 Liters (11.6 US Quarts)
Coolant Type:
Mercedes-Benz Specification 325.0 (Antifreeze/Coolant, Blue)
Emission Control
Emission Standards:
Federal Tier 1 (USA) / Euro 1 (Europe)
🔧 Transmission
Standard
Type:
4-Speed Automatic (722.5)
Gear Ratios:
1st: 3.68, 2nd: 2.40, 3rd: 1.44, 4th: 1.00, Reverse: 4.20
Transmission Fluid Capacity:
8.0 Liters (8.5 US Quarts) (dry fill)
Transmission Fluid Type:
MB Spec 236.1 (Dexron II compatible)
Features
Overdrive:
Yes (4th Gear)
Lock-Up Torque Converter:
Yes
📐 Dimensions
Exterior
Length:
4960 mm (195.3 in)
Width:
1798 mm (70.8 in)
Height:
1450 mm (57.1 in)
Wheelbase:
2936 mm (115.6 in)
Weights
Curb Weight:
1780 kg (3924 lbs)
Gross Vehicle Weight Rating:
2250 kg (4960 lbs)
🛡️ Safety Features
Ratings
NHTSA Rating 1991:
Driver Side: 4 Stars, Passenger Side: 4 Stars (for sedans of the era)
Active Features
ABS:
Standard (Anti-lock Braking System)
Passive Features
Airbags:
Driver's Side Airbag (Standard)
Seatbelts:
Front Inertia Reel Seatbelts, Rear Three-Point Seatbelts
Crumple Zones:
Advanced crumple zones designed for occupant protection.
💡 Technology Features
Infotainment
Audio System:
Factory AM/FM Stereo Cassette Player with optional CD Changer.
Driver Assistance
Cruise Control:
Standard
ABS:
Standard Anti-lock Braking System
Connectivity
Post 1990 Features:
Early forms of electronic climate control and centralized locking systems operated via vacuum.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 10,000 km (6,000 miles) or 12 months, whichever comes first.
Air Filter Replacement:
Every 40,000 km (24,000 miles)
Fuel Filter Replacement:
Every 40,000 km (24,000 miles)
Transmission Fluid Change:
Every 60,000 km (36,000 miles)
Coolant Flush:
Every 60,000 km (36,000 miles) or 3-4 years
Fluid Specifications
Power Steering Fluid:
MB Spec 236.3 (Dexron II compatible)
Brake Fluid:
DOT 3 or DOT 4 Hydraulic Brake Fluid
Known Issues
Diesel Specific:
Glow plug issues, injector pump timing, exhaust manifold cracks (common on older diesels), EGR system maintenance.
Common W126:
Headliner sagging, window regulator failures, vacuum line leaks (affecting central locking, climate control, door locks), SRS system warnings, climate control blower motor resistor failures, ABS sensor issues.
Part Numbers
Oil Filter Example:
Mann Filter W102/2, Bosch 3323 (verify specific application)
Air Filter Example:
Mann Filter C32170 (verify specific application)
📚 Vehicle History
Brand Heritage
Mercedes Benz Legacy:
Renowned for engineering excellence, luxury, and durability.
Model Evolution
W126 Generation:
Second generation of the S-Class (W126) produced from 1979 to 1991. The 1991 model year represents the final iteration of this highly successful platform.
Production
Production Period:
W126: 1979-1991
Significant Updates For 1991:
The 1991 model year saw continued refinement of the W126 chassis, maintaining its position as a benchmark in luxury and engineering. Minor updates may include trim and feature adjustments.
🏆 Awards & Recognition
Recognitions
W126 Reputation:
Consistently ranked among the most reliable and durable Mercedes-Benz models. Celebrated for its build quality and timeless design.
Ratings
Consumer Reports Historical:
Generally positive ratings for reliability in its class during its production run.
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