How to Replace timing chain on Renault Megane 3 1.4 2008-

Special tools

• Flywheel locking tool – No.Mot.1431.
• Crankshaft pulley holding tool – No.Mot.1917.

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

Removal

• Removal/installation of timing chain requires:
  • Engine removal.
• Engine at TDC on No.1 cylinder [1] .
• Ensure timing marks positioned as shown [2] . If not, turn crankshaft 360°.
• Lock timing chain tensioner in retracted position:
  • Turn lever to unlocked position [3] .
  • Press plunger into tensioner body [4] .
  • Turn lever to locked position [5] .
  • Insert 2,5 mm pin to lock tensioner plunger [6] .
• Remove timing chain tensioner, tensioner rail and chain guide.
• Align 7th tooth of inlet camshaft sprocket with threaded hole in cylinder head [7] . Count clockwise from camshaft adjuster timing mark.
• Remove timing chain.

Installation

• Ensure 7th tooth of inlet camshaft sprocket aligned with threaded hole in cylinder head [7] .
• Ensure crankshaft sprocket timing mark at 6 o’clock position [8] .
• Fit timing chain in anti-clockwise direction, starting at inlet camshaft sprocket.
• Align marked or coloured chain links with timing mark on each sprocket [8] , [9] & [10] .
• Install timing chain tensioner, tensioner rail and chain guide.
• Remove pin to release timing chain tensioner plunger [6] .
• Turn crankshaft two turns clockwise.
• Ensure timing marks positioned as shown [2] .