Installing the timing chains

• Position the bottom timing chain (1).
• Position the crankshaft using special tool 2 357 904  and secure the special tool 2 357 904  with the screw (2).
• Make sure the special tool 2 357 904  is correctly installed on the guide pin of the crankshaft and on the guide bushing of the crankcase.

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• Insert the camshaft sprocket (2) into the timing chain and position it on the crankcase.
• Tighten down screw (1).

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• Replace the bearing journals (1) and (3).

  Parts:  Bearing journal

• Position the guide rail (4) and screw in the bearing journals (3).

• Position the tensioning rail (2) and screw in the bearing journal (1).

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• Remove oil and contamination from the sealing surfaces of the chain tensioner (2).
• Position the chain tensioner (2) and secure with the screws (1).

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• Secure the chain tensioner piston (1) with a screwdriver (2).
• Remove special tool 0 491 012 (11 4 120)  and slowly remove the screwdriver (2).
• Remove special tool 2 357 904  .

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• Install the tensioning rail (2).
• Install the top timing chain (1).

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• Install the chain (1) for the oil pump.

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Follow-up work 

• Refer to INSTALLING THE REAR TIMING CASE COVER .
• Refer to REPLACING THE REAR CRANKSHAFT SEAL .
• Refer to INSTALLING THE OIL VACUUM PUMP .
• Refer to REFITTING ENGINE OIL PAN
• Refer to TIGHTENING THE OIL DRAIN PLUG .
• Refer to INSTALLING THE FLYWHEEL .
• Refer to CLEANING SEALING SURFACES .
• Refer to INSTALLING THE CYLINDER HEAD GASKET .
• Refer to INSTALLING THE CYLINDER HEAD .
• Refer to TURNING THE ENGINE ON THE VIBRATION DAMPER .
• Refer to BLOCKING THE CRANKSHAFT IN THE TDC FIRING POSITION OF THE FIRST CYLINDER (AUTOMATIC TRANSMISSION) .
• Refer to BLOCKING THE CAMSHAFTS
• Refer to INSTALLING THE INTAKE ADJUSTER .
• Refer to INSTALLING EXHAUST CAMSHAFT ADJUSTER .
• Refer to PRELOAD TIMING CHAIN .
• Refer to TIGHTENING THE VANOS CENTRAL VALVE .
• Refer to CRANKING ENGINE TWICE (AUTOMATIC TRANSMISSION) .
• Refer to DISASSEMBLING ALL SPECIAL TOOLS .
• Refer to INSTALLING THE COOLANT FEED LINE (COOLANT RETURN LINE IS REMOVED) .
• Refer to INSTALLING THE REAR SECTION OF THE COOLANT RETURN LINE (FRONT SECTION REMOVED) .
• Refer to INSTALLING THE FRONT SECTION OF THE COOLANT RETURN LINE .
• Refer to INSTALLING THE AUXILIARY COOLANT PUMP .
• Refer to INSTALLING THE INTAKE PLENUM .
• Refer to INSTALLING THE TANK VENT VALVE .
• Refer to TIGHTENING THE OIL FILTER CAP .
• Refer to SECURING THE OIL FEED LINE TO THE ENGINE BLOCK .
• Refer to INSTALLING THE OIL RETURN LINE FOR THE EXHAUST TURBOCHARGER .
• Refer to INSTALLING THE SUPPORT FOR THE EXHAUST TURBOCHARGER .
• Refer to INSTALLING STARTER MOTOR .
• Refer to INSTALLING CYLINDER HEAD COVER .
• Refer to INSTALLING BOTH ACTUATORS (ENGINE REMOVED) .
• Refer to INSTALLING THE INJECTORS FOR THE CYLINDERS 4 TO 6 .
• Refer to INSTALLING THE INJECTORS FOR THE CYLINDERS 1 TO 3 .
• Refer to PREPARING FOR THE INSTALLATION OF THE HIGH PRESSURE PUMP .
• Refer to INSTALLING HIGH PRESSURE PUMP .
• Refer to INSTALLING THE HIGH-PRESSURE LINE BETWEEN THE HIGH-PRESSURE RAIL AND THE HIGH-PRESSURE PUMP .
• Refer to INSTALLING THE IGNITION COILS .
• Refer to INSTALLING FRONT ENGINE ENCAPSULATION .
• Refer to INSTALLING CHARGE AIR LINE .
• Refer to INSTALLING BOTTOM CLEAN AIR PIPE .
• Refer to INSTALLING FRONT AXLE DIFFERENTIAL .
• Refer to INSTALLING BEARING BRACKET
• Refer to REMOVING THE ENGINE FROM THE ASSEMBLY JIG .
• Refer to TOPPING UP THE MOTOR OIL .
• Refer to INSTALLING THE RIGHT ENGINE MOUNT HOLDER .
• Refer to INSTALLING CATALYTIC CONVERTER .
• Refer to INSTALLING THE OXYGEN SENSOR MONITOR .
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR
• Refer to MOUNTING THE ENGINE ON THE FRONT AXLE .
• Refer to INSTALLING THE COMPLETE FRONT AXLE INCLUDING ENGINE AND TRANSMISSION .