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How to Replace timing chain on Mercedes C180 CGI W204 2009-2012

Special tools

  • Balancer shaft chain link kit – No.602589024000.
  • Balancer shaft chain link installer die kit – No.271589026300.
  • Camshaft holding tool 1 – No.271589006100.
  • Camshaft holding tool 2 (271.820/860 engines) – No.271589006100.
  • Chain tensioner drift – No.271589001500.
  • Crankshaft holding tool – No.271589004000.
  • Crankshaft pulley puller – No.000589883300.
  • Flywheel/drive plate holding tool – No.602589004000.
  • Open-end spanner – No.271589000100.
  • Tensioner rail wedge – No.271589003100.
  • Timing chain link kit – No.271589096300.
  • 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.271589016300.
  • Timing chain link installer die kit 2 – No.271589056300.
  • Timing chain to camshaft sprocket holder – No.271589014000.
  • Tool case – No.602589009800.

General precautions

  • Disconnect battery earth lead.
  • Remove spark 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.
How to Replace timing chain on Mercedes C180 CGI W204 2009-2012
How to Replace timing chain on Mercedes C180 CGI W204 2009-2012

Valve timing procedures

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] .
  • Ensure No.1 cylinder camshaft lobes are facing upwards [2] .
  • Ensure timing marks on both camshafts aligned [3] .
  • Camshaft rotation can be prevented by using camshaft holding tool.
  • Remove tensioner assembly before carrying out engine repairs [4] .
  • Install tensioner after repairs. Tightening torque: 40 Nm.
  • Ensure grooves [5] on sprockets of balancer shafts [6] are horizontal and pointing towards guide sprocket [7] .

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