(post-2006), which includes changes to the turbocharger, connecting rods, and ceramic glow plugs. Available Manual Types Official Training Guides: Originally for authorized Mercedes-Benz workshops
: Inline 4-cylinder, DOHC 16-valve with turbocharging. 2. Core Maintenance & Procedures Mercedes Workshop Manual Om646 Engine
: The OM646 is famous for surpassing 300,000 miles on original internals. This manual provides the precise torque specs and technical data needed to keep that streak alive. which includes changes to the turbocharger
Reduced compression ratio (17.5:1) and ceramic glow plugs (from 2006) torque specification for a particular OM646 component? Mercedes Workshop Manual Om646 Engine
Modern Mercedes engines are governed by electronics. A good manual includes for: Glow plug control modules. Crankshaft and Camshaft position sensors. Mass Air Flow (MAF) and Map sensors. Common Maintenance Tasks in the OM646 Manual