1986 Mercedes-Benz 300SDL Service and Repair Manual

This factory service and repair manual for the 1986 Mercedes-Benz 300SDL documents a four-door sedan built around a turbocharged diesel. The engine is a 3.0L inline-six with a single overhead camshaft, and it is the only one listed for this year. The Base trim is the only one listed, and no second body joins it. The specifications and torque values cover this car, from the turbodiesel's fuel and intake systems through the sedan's wiring.

Engines covered

• 3.0L inline-six — SOHC, turbocharged, diesel

Body styles covered

• 4-door sedan

Trims covered

• Base

Known issues on the 1986 300SDL. A turbocharged six-cylinder diesel ties several systems together: the engine, its turbocharger and the diesel fuel supply. The manual addresses each with procedures, specifications and torque values, and its diagnostics help work out which system is behind a symptom. Wiring diagrams cover the four-door sedan's electrical circuits. The manual covers the Base car with the 3.0L engine, the single combination listed for this model year.