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How to Replace timing chain on Mercedes C350 CDI 4Matic W204 2009-

Special tools

  • Flywheel/drive plate locking tool (bell housing) – No.112589034000.
  • Camshaft retaining tool x 2 – No.642589003100.
  • Timing chain to camshaft sprocket holding tool – No.642589044000.
  • Timing chain link kit – No.602589024000.
  • Timing chain link separator (item 1) – No.602589023300.
  • Timing chain link separator (item 2) – No.602589046300.
  • Timing chain link separator (item 3) – No.602589046301.
  • Timing chain link installer – No.602589003900.
  • Timing chain link installer die kit 1 – No.602589026300.
  • Timing chain link installer die kit 2 – No.602589036300.
  • Timing chain link installer die kit 3 – No.112589096300.
  • Tool case – No.602589009800.

General precautions

  • Disconnect battery earth lead.
  • Remove glow plugs to ease turning engine.
  • Turn engine in normal direction of rotation (unless otherwise stated).
  • Observe tightening torques.
  • Do NOT turn crankshaft via camshaft or other sprockets.
  • Do NOT turn crankshaft or camshaft with timing chain removed.

Valve timing procedures

How to Replace timing chain on Mercedes C350 CDI 4Matic W204 2009-
How to Replace timing chain on Mercedes C350 CDI 4Matic W204 2009-

NOTE: Timing chain can be changed without dismantling engine. Using the tools listed above, the new chain can be linked to the old, passed round the sprockets and then joined.

  • Engine at TDC on No.1 cylinder [1] .
  • Install camshaft retaining tools to LH and RH banks [2] .
  • Ensure timing marks on camshaft gears aligned [3] & [4] .
  • Ensure balancer shaft timing mark aligned at 12 o’clock position [5] .
  • Remove tensioner assembly before carrying out engine repairs [6] .

NOTE: Bolts for camshaft sprocket MUST be renewed.

  • Tighten bolt of each camshaft sprocket to 18 Nm [7] .
  • Install tensioner after engine repairs [6] . Tightening torque: 80 Nm.
  • Tighten crankshaft pulley bolt [8] . Tightening torque: 200 Nm + 90° + 90°.

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