This comprehensive Mercedes 300D Turbo Service Repair Manual covers models from 1982 to 1985, providing detailed instructions for maintenance and repairs. The manual is designed to help mechanics and DIY enthusiasts diagnose and solve vehicle problems, as well as guide them through disassembly, inspection, rebuilding, and assembly processes. Within the manual, you'll find sections covering a wide range of topics, including: * **Engine Maintenance:** Engine oil and filter changes, valve clearance adjustments, idle speed checks, injection timing checks and adjustments, fuel filter and pre-filter replacements, air filter cleaning and replacement, V-belt inspections, oxygen sensor replacement, spark plug inspections and replacements, coolant level checks, antifreeze protection checks, and cooling system maintenance. * **Transmission and Drivetrain:** Clutch disk wear checks, manual transmission oil changes, automatic transmission fluid and filter changes, transfer case fluid changes, clutch system checks and inspections, throttle linkage lubrication, and idle speed adjustment. * **Suspension and Steering:** Self-leveling suspension inspections, front and rear axle oil changes, front axle ball joint checks, rear axle mount adjustments, wheel inspections and rotations, tire pressure corrections, drive shaft flexible coupling inspections, and steering component checks and adjustments. * **Brakes:** Brake fluid level checks, brake line inspections, brake pad and disc thickness checks, brake disc cleaning, parking brake cable inspections, parking brake adjustments, brake fluid replacements, and brake tests. * **Electrical and Body:** Battery fluid level checks, warning and indicator lamp checks, water drain cleaning, engine compartment lower panel removal and installation, door hinge and lock lubrication, hydraulic top fluid level checks, sunroof and soft top inspections, windshield washer fluid level checks, antenna mast cleaning, headlamp and exterior lamp inspections, windshield and headlamp wiper and washer inspections, AC refrigerant charge checks, dust filter, active charcoal filter and recirculating air filter replacements, folding side mirror lubrication, hood lubrication, safety belt inspections, backrest lock operation checks, lower noise encapsulation panel removal and installation, and body paint damage inspections. This manual provides a valuable resource for anyone seeking to maintain, repair, or restore their Mercedes 300D Turbo.

The Mercedes-Benz 300D Turbo, produced from 1982 to 1985, was a significant milestone in the evolution of the German automaker's diesel-powered vehicles. It marked the introduction of turbocharging to the 300D series, a technology that dramatically enhanced the engine's performance while still maintaining the renowned fuel efficiency that Mercedes-Benz diesels were known for. The 300D Turbo was powered by a 3.0-liter inline-five-cylinder diesel engine that utilized a Garrett AiResearch T3 turbocharger to boost output. This resulted in a substantial increase in power, catapulting the 300D Turbo from a leisurely cruiser to a surprisingly sprightly performer. The 300D Turbo's engine generated approximately 123 horsepower and 177 lb-ft of torque, a considerable jump compared to its naturally aspirated predecessor. This newfound power translated to a more engaging driving experience, with the 300D Turbo capable of reaching 0-60 mph in around 12 seconds, a remarkably quick time for a diesel-powered car of its era. Beyond its performance enhancements, the 300D Turbo retained the classic Mercedes-Benz qualities of robust build, luxurious interior, and exceptional reliability. The car's spacious and well-appointed cabin featured plush leather seats, wood trim, and a wealth of amenities that offered a comfortable and refined driving experience. The 300D Turbo's stout construction and proven diesel engine ensured that it was capable of handling the rigors of daily driving and long-distance journeys with ease. The 300D Turbo's combination of performance, luxury, and reliability solidified its reputation as a highly desirable vehicle, coveted by both enthusiasts and those seeking a practical yet sophisticated mode of transportation. It was a testament to Mercedes-Benz's engineering prowess and its ability to seamlessly blend performance with fuel efficiency, even in a diesel-powered car, making it a truly impressive and enduring model in the history of the automotive industry.