Mercedes 350 SD Turbo 1991 Service Repair Manual – PDF Download

🛠️ Mercedes 350 SD Turbo 1991 Service Repair Manual – PDF Download

🧰 Complete Factory Workshop Manual – Covers All Repairs & Maintenance Tasks
📲 Instant PDF Download – Compatible with All Devices (Windows, Mac, iOS, Android)
🔧 Perfect for DIY Repairs, Routine Service, and Professional Diagnostics

🚀 Quick Intro:

The Mercedes 350 SD Turbo 1991 service manual PDF download is the complete official factory guide for maintaining, diagnosing, and repairing your turbo diesel 350 SD. Fully bookmarked and searchable, this manual covers everything from diesel engine service and turbocharger maintenance to electrical system troubleshooting and transmission repairs — perfect for DIY enthusiasts, restoration experts, and professional mechanics.

🔍 Model Background

The Mercedes 350 SD Turbo (1991) was a short-wheelbase diesel-powered luxury sedan from the final production year of the W126 S-Class in North America. As a rare offering, it combined executive refinement, legendary build quality, and fuel-efficient turbodiesel performance in a more compact S-Class package.

Under the hood was the 3.5-liter OM603.970 inline-six turbodiesel engine, producing approximately 121 horsepower and 201 lb-ft of torque. Paired with a 4-speed automatic transmission, the engine delivered smooth torque delivery and excellent fuel economy, especially suited for long-distance driving and daily commuting alike.

Compared to the long-wheelbase 350 SDL, the 350 SD offered a shorter wheelbase for better maneuverability, while retaining the core attributes of W126 engineering: four-wheel independent suspension, ABS brakes, and a comfortable, well-balanced ride.

The interior featured typical S-Class luxury, including leather or MB-Tex upholstery, rich wood trim, power seats, automatic climate control, and a well-insulated cabin. Though not performance-oriented, the 350 SD provided a serene, durable driving experience built on Mercedes’ tradition of diesel reliability—despite some known issues with the OM603’s head design in earlier models.

With only one model year of production, the 350 SD Turbo is now considered a rare and collectible diesel S-Class, appreciated for its combination of efficiency, luxury, and classic W126 styling.

📆 Model Coverage:

• Mercedes 350 SD Turbo (1991)

📚 Manual Chapters & Content:

• General Vehicle Inspection and Scheduled Maintenance
• Turbo Diesel Engine Diagnostics, Overhaul, and Repairs
• Turbocharger Inspection, Testing, and Replacement Procedures
• Fuel Injection System Testing, Tuning, and Repairs
• Ignition System Adjustments and Idle Speed Calibration
• Transmission Fluid Changes, Diagnostics, and Overhaul
• Cooling System Inspections, Leak Testing, and Coolant Replacement
• Brake System Bleeding, Disc Inspection, and Pad Replacement
• Suspension and Steering System Diagnostics and Repairs
• Electrical System Testing, Battery and Charging Diagnostics
• Heating, Ventilation, and Air Conditioning (HVAC) Maintenance
• Exhaust System Servicing and Emissions Diagnostics
• Full Electrical Wiring Diagrams and Troubleshooting Charts
• Body Maintenance, Corrosion Prevention, and Paint Repairs

💡 Key Features:

• File Type: PDF (compressed in .ZIP or .RAR)
• Language: English
• Fully Bookmarked & Searchable: Yes
• Printable: Yes (print sections as needed!)
• Compatible With: Windows, macOS, iOS, Android, Linux
• Delivery: Instant Digital Download – No Shipping Required!

🔍 Keywords:

Mercedes 350 SD Turbo service manual, Mercedes 350 SD 1991 repair manual PDF, Mercedes diesel maintenance guide, Mercedes turbo diesel troubleshooting, Mercedes 350SD wiring diagrams, Mercedes factory service manual PDF

❓ Mini FAQ:

Q: Is this the official Mercedes-Benz factory service manual?
A: Yes, this is the complete official factory manual used by Mercedes-Benz dealership technicians.

Q: Can I view the Mercedes 350 SD Turbo 1991 service manual on mobile devices?
A: Absolutely — the PDF manual is fully compatible with smartphones, tablets, laptops, and desktop computers.

Q: Does the manual cover turbocharger service, engine maintenance, and wiring diagrams?
A: Yes! It includes complete engine repairs, turbo servicing, transmission maintenance, and full electrical troubleshooting.

Q: Will I receive a printed manual?
A: No, this is a digital PDF download available instantly after secure checkout.

🧭 Helpful Resources for Mercedes Car Owners

• Why Every Car Owner Should Own a Service Manual – Find out how a downloadable repair manual can simplify maintenance and help you troubleshoot common problems on your own.
• Car Troubleshooter – Not sure what’s wrong with your Mercedes car? Our free tool lists common issues and DIY fixes across all major car brands.

🔧 Browse More Mercedes Car Manuals

Note: While our manuals are designed for DIY use, they do not replace professional mechanical training. If you're unsure about a repair or your car shows serious issues, we strongly recommend visiting a certified mechanic. These guides are best suited for owners with basic to moderate mechanical experience.