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

A3 Audi

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.

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