How to Replace timing chain on Audi A3 8P MK2 1.4 TFSI 2007-2012

Special tools

• Camshaft alignment tool – No.T10171A.
• Camshaft sprocket holding tool – No.T10172.
• Crankshaft pulley holding tool 1 – No.3415.
• Crankshaft pulley holding tool 2 – No.3415/1.
• Crankshaft timing pin – No.T10340.
• Dial gauge – No.VAS 6079.
• Dial gauge holder – No.T10170.
• Tensioner locking tool – No.T40011.

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:
  • Timing chain cover removal.
  • Sump removal.
• Install dial gauge and holder in No.1 cylinder plug hole. Ensure engine at TDC on No.1 cylinder [1] .
• Ensure timing marks on camshafts aligned as shown [2] . If not, turn crankshaft 360°.
• Fit camshaft alignment tool [3] .

NOTE: If camshaft alignment tool cannot be inserted valve timing is incorrect.

• Install crankshaft timing pin [4] .
• Refit crankshaft pulley bolt with spacer. Finger tighten bolt.
• Push tensioner rail against chain tensioner.
• Fit tensioner locking tool [5] .

NOTE: If reusing timing chain: Mark direction of rotation on chains.

• Remove camshaft alignment tool [3] .
• Slacken bolt of each camshaft sprocket.

NOTE: Inlet camshaft sprocket bolt has LH thread.

• Remove exhaust camshaft sprocket [6] and timing chain.
• Align camshafts. Use special tool [3] .
• Ensure crankshaft at TDC on No.1 cylinder:
  • Turn crankshaft slowly clockwise until it stops against timing pin [4] .
• Install exhaust camshaft sprocket [6] with timing chain.
• Renew bolt of each camshaft sprocket and re-tighten by hand.
• Ensure camshaft sprockets turn freely but do not tilt.
• Remove tensioner locking tool [5] .
• Ensure crankshaft at TDC on No.1 cylinder:
  • Turn crankshaft slowly clockwise until it stops against timing pin.
• Ensure camshaft alignment tool correctly located [3] .
• Temporarily tighten camshaft sprocket bolts to:
  • Inlet camshaft sprocket bolt. Tightening torque: 40 Nm.
  • Exhaust camshaft sprocket bolt. Tightening torque: 50 Nm.
• Remove camshaft alignment tool [3] .
• Remove crankshaft timing pin [4] .
• Turn crankshaft two turns clockwise.
• Check engine at TDC on No.1 cylinder. Use dial gauge [1] .
• Fit crankshaft timing pin [4] .
• Ensure camshaft alignment tool can be fitted [3] .
• If camshaft alignment tool cannot be fitted valve timing is incorrect. Repeat installation procedures.
• Remove camshaft alignment tool [3] .
• Remove crankshaft timing pin [4] .
• Tighten camshaft sprocket bolts a further 90°.
• Turn crankshaft two turns clockwise.
• Check valve timing.
• Tighten crankshaft pulley bolt. Tightening torque: 150 Nm + 180°.

NOTE: Crankshaft pulley bolt and bolt on each camshaft sprocket MUST only be used once.