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How to replace timing chain on Vauxhall/Opel Agila A 1.2i

Special tools

  • Camshaft locking tool – No.KM-953.
  • Camshaft position (CMP) sensor disc setting tool – No.KM-954.
  • Crankshaft locking pin – No.KM-952.
  • Timing chain tensioner locking pin – No.KM-955.

General precautions

  • Disconnect battery earth lead.
  • Remove spark plugs to ease turning engine.
  • Turn engine in normal direction of rotation (unless otherwise stated).
  • DO NOT use special tools listed above to lock engine when slackening sprocket or pulley bolts.
  • 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 Vauxhall/Opel Agila A 1.2i
How to replace timing chain on Vauxhall/Opel Agila A 1.2i
  • Turn crankshaft until just before TDC mark on No.1 cylinder [1] .
  • Ensure No.1 cylinder camshaft lobes are facing outwards [2] .
  • Remove blanking plug from cylinder block.
  • Slowly turn crankshaft clockwise until locking pin can be inserted in crankshaft [3] . Tool No.KM-952.
  • Insert locking tool in rear of camshafts [4] . Tool No.KM-953.
  • Install camshaft position (CMP) sensor disc setting tool [5] . Tool No.KM-954.
  • Compress timing chain tensioner and lock with tool [6] . Tool No.KM-955.
  • If necessary, slacken bolt of each camshaft sprocket to adjust valve timing position [7] .
  • Fit new bolts to camshaft sprockets [7] .
  • Tighten bolt of each camshaft sprocket to 50 Nm + 60° [7] .
  • Tighten crankshaft pulley bolts to 8 Nm [8] .
  • Fit new crankshaft pulley centre bolt.
  • Tighten crankshaft pulley centre bolt to 150 Nm + 45° [9] .

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