How to Replace timing chain on Citroen C1 1.0 B0 (CFA Engine)

Special tools

• Crankshaft pulley holding tool – No.C.0132.AA.

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/installation of timing chain requires:
  • Engine removal.
  • Sump removal.
• Ensure camshaft sprocket timing marks at 12 o’clock position [1] & [2] : If not, turn crankshaft pulley 360°.
• Lock tensioner in retracted position:
  • Lift pawl upwards [3] .
  • Push plunger [4] through tensioner body in direction of arrow.
  • Push pawl downwards [5] .
  • Lock tensioner in retracted position with pin [6] .
• Ensure yellow coloured chain link aligned with timing marks on crankshaft sprocket [7] .
• Ensure orange coloured chain links aligned with timing mark on each camshaft sprocket [1] & [2] .
• Remove pin [6] to release timing chain tensioner plunger [5] .