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

Special tools

• Crankshaft pulley holding tool – No.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:
  • Sump removal.
• Turn crankshaft clockwise until crankshaft timing mark aligned with pointer [1] .
• Ensure camshaft adjuster timing mark at 12 o’clock position [2] .
• Ensure camshaft sprocket timing mark at 12 o’clock position [3] .
• Align yellow coloured chain link with crankshaft sprocket timing mark [4] .
• Align orange coloured chain link with timing mark on camshaft sprocket [5] .
• Align orange coloured chain link with timing mark on camshaft adjuster [6] .
• Reset timing chain tensioner [7] .
  • Lift pawl upwards [8] .
  • Push plunger into tensioner body in direction of arrow [9] .
  • Push pawl downwards [10] .
  • Retain in position with suitable pin [11] .
• Remove pin to release timing chain tensioner plunger [11] .