Rotate the crankshaft pulley until the "40" mark aligns with the timing pointer on the timing case cover.
If you smell fuel or burning plastic in the cabin, or notice a black, tar-like substance around the fuel injectors, the injector seal has failed.
Strict bolt-loosening sequences to prevent warping the aluminum head. Mercedes Workshop Manual Om646 Engine
Clamp the incoming and outgoing rubber fuel lines to prevent priming loss. Release the click-clips or hose clamps.
Always verify these numbers against your specific chassis manual variant, as updates occurred with the EVO engine. Fastener Component Torque Specification →right arrow →right arrow →right arrow Always use new stretch bolts Injector Hold-down Bolt 7 Nm + 90° + 90° Clean threads thoroughly before installing Main Crankshaft Pulley 200 Nm + 90° Requires a flywheel locking tool Camshaft Bearing Caps Follow the specific inside-out sequence Oil Pan Drain Plug Replace copper crush washer How to Effectively Use the Manual for Troubleshooting Rotate the crankshaft pulley until the "40" mark
Clear diagrams highlighting the Top Dead Center (TDC) alignment marks on the crankshaft pulley and camshaft gears.
The manual dictates using a specialized slide hammer tool if the injector is seized in carbon. The injector seat must be cleaned and faced using a seat cutter tool. Clamp the incoming and outgoing rubber fuel lines
The (e.g., 2006 W211 E220 CDI or 2008 Sprinter) The specific symptoms or error codes you are experiencing The repair procedure you are planning to perform next Share public link
Limp home mode, poor acceleration, black smoke under load, fault codes P2511 or P2359.
Detailed requirements for oil viscosity and approvals (e.g., MB 229.31 or MB 229.51 for vehicles equipped with Diesel Particulate Filters / DPF).
Investing time into referencing a legitimate ensures that repairs conform to strict factory standards. Adhering to exact tightening torques, using specific Mercedes-Benz diagnostic codes, and respecting the tight tolerances of the common-rail fuel system will prolong the operating lifespan of this highly reliable engine for hundreds of thousands of miles.