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How to Replace timing chain on Mercedes C180 CDI W204 2011-

Special tools

  • Balancer shaft alignment tool – No.651589026300.
  • Camshaft alignment tools – No.651589014000.
  • Crankshaft pulley holding tool – No.651589004000 or 651589084000.
  • 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.642589003300.
  • Timing chain link installer die kit – No.651589046300.
  • Timing chain to camshaft sprocket holder – No.651589034000.
  • 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.
  • If fitted: Mark position of crankshaft position (CKP) sensor before removal.
  • 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 CDI W204 2011-
How to Replace timing chain on Mercedes C180 CDI W204 2011-

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.

  • Removal/installation of timing chain and gears requires:
      • Engine removal.
      • Flywheel removal.
      • Sump removal.

NOTE: Timing chain and gears located at rear of engine.

  • Check camshaft timing:
      • Engine at TDC on No.1 cylinder [1] .
      • Remove exhaust camshaft position (CMP) sensor.
      • Ensure timing marks on camshafts aligned as shown [2] & [3] . If not, turn crankshaft 360°.
  • Adjust camshafts as follows:
      • Ensure crankshaft at TDC on No.1 cylinder [1] .
      • Slacken bolt of each camshaft sprocket [4] .

        NOTE: Camshaft sprocket bolts have LH thread.

      • Remove camshaft bearing caps [5] .
      • Align camshafts with camshaft alignment tools [6] .
      • Tighten bolt of each camshaft sprocket [4] . Tightening torque: 55 Nm + 90°.
      • Remove camshaft alignment tools [6] .
      • Install camshaft bearing caps [5] .
  • Check balancer shaft timing:
      • Ensure crankshaft at TDC on No.1 cylinder [1] .
      • Ensure balancer shaft timing mark aligned with balancer shaft housing timing mark [7] .
  • Adjust balancer shafts as follows:
      • Ensure crankshaft at TDC on No.1 cylinder [1] .
      • Slacken bolt of each balancer shaft gear [8] .
      • Rotate balancer shafts until balancer shaft alignment tool can be fitted [9] .
      • Rotate balancer shafts until balancer shaft alignment tool pin can be installed [10] .
      • Tighten bolt of each balancer shaft gear [8] . Tightening torque: 50 Nm + 90°.
      • Remove balancer shaft alignment tool pin [10] .
      • Turn crankshaft in direction of engine rotation to 30° ATDC on No.1 cylinder.
      • Remove balancer shaft alignment tool [9] .

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