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How to Replace timing chain on Renault Megane 3 2.0 dCi 2008-

Special tools

  • Crankshaft pulley locking tool – No.MOT.1789.
  • Flywheel locking tool – No.MOT.919-02.
  • Timing chain cover removal tool – No.MOT.1716.

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.
  • 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.

Valve timing procedures

How to Replace timing chain on Renault Megane 3 2.0 dCi 2008-
How to Replace timing chain on Renault Megane 3 2.0 dCi 2008-

Removal

  • Removal/installation of timing chain requires:
      • Engine/transmission removal.
  • Engine at TDC on No.1 cylinder.
  • Ensure crankshaft sprocket timing mark at 6 o’clock position [1] .
  • Ensure timing marks on each camshaft sprocket aligned with timing marks on cylinder head [2] .
  • Fit flywheel locking tool [3] .
  • Lock timing chain tensioner in retracted position:
      • Depress tensioner rail [4] .
      • Insert suitable pin to lock tensioner plunger [5] .
  • Remove timing chain tensioner, tensioner rail and chain guide.
  • Remove timing chain.

Installation

  • Ensure crankshaft sprocket timing mark at 6 o’clock position [1] .
  • Ensure timing marks on each camshaft sprocket aligned with timing marks on cylinder head [2] .
  • Install timing chain.
  • Ensure coloured or painted chain links aligned with timing marks on each camshaft sprocket and crankshaft sprocket [6] & [7] .
  • Install timing chain tensioner, tensioner rail and chain guide.
  • To release tensioner plunger after installation:
      • Remove locking pin [5] .
  • Remove flywheel locking tool [3] .
  • Turn crankshaft two turns clockwise to No.1 cylinder at TDC.
  • Ensure crankshaft sprocket timing mark at 6 o’clock position [1] .
  • Ensure timing marks on each camshaft sprocket aligned with timing marks on cylinder head [2] .
  • Tighten new crankshaft pulley bolt as follows [8] :
      • Tighten crankshaft pulley bolt to 68 Nm.
      • Slacken crankshaft pulley bolt.
      • Tighten crankshaft pulley bolt to 30 Nm + 60°.

NOTE: DO NOT start engine without auxiliary drive belt fitted as damage may occur to crankshaft pulley.

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