How to Replace timing chain on Audi A3 8P MK2 1.2 TFSI 2009-2012

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.
  

  Special tools

  • Camshaft alignment tool – No.T10414.
  • Camshaft sprocket holding tool – No.T10172.
  • Crankshaft pulley holding tool 1 – No.3415.
  • Crankshaft pulley holding tool 2 – No.3415/2.
  • Crankshaft timing pin – No.T10340.

  

• Removal

  • Removal/installation of timing chain requires:
    • • Sump removal.
  • Remove blanking plug from cylinder block [1] .
  • Install crankshaft timing pin [2] .
  • Turn crankshaft slowly clockwise until it stops against timing pin.
  • Remove hose connecting block from rear of cylinder head cover [3] .
  • Ensure groove in rear of camshaft positioned as shown [4] .
  • Install camshaft alignment tool [5] .
  • Remove timing chain tensioner [6] .
  • Remove camshaft sprocket bolt [7] . Hold camshaft sprocket with holding tool.
  • Remove camshaft sprocket.
  • Remove timing chain.

  Installation

  • Ensure crankshaft at TDC on No.1 cylinder.
  • Ensure camshaft alignment tool correctly located [5] .
  • Fit timing chain to crankshaft sprocket.
  • Fit timing chain to camshaft sprocket.
  • Install camshaft sprocket and chain as an assembly to camshaft. Finger tighten bolt [7] .
  • Fit timing chain tensioner [6] .
  • Tighten camshaft sprocket bolt [7] . Tightening torque: 50 Nm.
  • Install crankshaft pulley.
  • Install the used crankshaft pulley bolt and tighten to 50 Nm.
  • Remove special tools [2] & [5] .
  • Turn crankshaft 2 turns clockwise to TDC on No.1 cylinder.
  • Ensure groove in rear of camshaft positioned as shown [4] .
  • Install crankshaft timing pin [2] .
  • Turn crankshaft slowly clockwise until it stops against timing pin.
  • Ensure camshaft alignment tool can be fitted [5] . If not, repeat installation procedures.
  • Remove special tools [2] & [5] .
  • Remove crankshaft pulley.
  • Tighten camshaft sprocket bolt a further 90° [7] .

  NOTE: All bolts with an angular torque setting MUST be replaced.