Audi S4 3.0 TFSI 2009 timing chain change instructions and replacement interval. Full guide!
Special tools
- Balancer shaft alignment tool – No.T40116.
- Camshaft adjuster pre-tensioning tool 1 – No.T10172.
- Camshaft adjuster pre-tensioning tool 2 – No.T10172/2.
- Camshaft locking tools – No.T40133/1/2.
- Camshaft sprocket adapter – No.T10035.
- Crankshaft locking pin – No.T40069.
- Crankshaft pulley bolt adapter – No.T40058.
- Crankshaft turning tool – No.T40049.
- Timing chain tensioner locking pin – No.T40071.
- Two-pin wrench – No.3212.
Special 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
- Timing chains located at rear of engine.
- Removal/installation of timing chain(s) requires:
- Transmission removal.
- Flywheel removal.
- Turn crankshaft in direction of rotation until threaded holes in camshafts point upwards [1] .
- Fit camshaft locking tools [2] . Tighten to 25 Nm.
- Remove blanking plug from cylinder block.
- Fit crankshaft locking pin [3] . Tighten to 20 Nm.
- Ensure balancer shaft can be locked in position [4] .
- Remove tensioner(s) to ease timing chain(s) removal/installation.
- Push plunger into tensioner housing and insert locking pin [5] , [6] & [7] .
- Slacken central bolt of each camshaft 1 turn [8] .
NOTE: If timing chains are to be reused, mark LH and RH chains before removal to ensure they are refitted in their original positions.
- Align camshafts.
- Fit camshaft locking tools [2] .
- Fit camshaft locking tool bolts. Tighten to 25 Nm.
- Tighten RH camshaft adjuster bolt and RH camshaft sprocket bolt in sequence [8] :
- Pre-tension RH camshaft coupling chain.
- Fit two-pin wrench to exhaust camshaft sprocket [9] .
- Pre-tension RH exhaust camshaft sprocket in clockwise direction [9] .
- Tighten exhaust camshaft sprocket bolt to 80 Nm [8] .
- Maintain pre-tension on exhaust camshaft sprocket [9] .
- Tighten inlet camshaft adjuster bolt to 80 Nm [8] .
- Remove two-pin wrench [9] .
- Tighten inlet camshaft adjuster bolt and exhaust camshaft sprocket bolt a further 90° [8] .
- Tighten LH camshaft adjuster bolt and LH camshaft sprocket bolt in sequence [8] :
- Pre-tension LH camshaft coupling chain.
- Fit camshaft adjuster pre-tensioning tools to LH inlet camshaft adjuster [10] .
- Pre-tension LH inlet camshaft adjuster in clockwise direction [10] .
- Tighten inlet camshaft adjuster bolt to 80 Nm [8] .
- Maintain pre-tension on inlet camshaft adjuster [10] .
- Tighten exhaust camshaft sprocket bolt to 80 Nm [8] .
- Remove camshaft adjuster pre-tensioning tools [10] .
- Tighten inlet camshaft adjuster bolt and exhaust camshaft sprocket bolt a further 90° [8] .
NOTE: Central bolt of camshaft adjusters MUST only be used once.
- Remove chain tensioner locking pin after repairs [7] .
- Remove crankshaft locking pin and camshaft locking tools [3] & [2] . Turn crankshaft 2 turns clockwise to TDC on No.1 cylinder.
- Fit camshaft locking tools [2] .
- Fit crankshaft locking pin [3] .
- If crankshaft locking pin cannot be fitted valve timing is incorrect. Repeat installation procedures.
- Remove crankshaft locking pin and camshaft locking tools [3] & [2] .
- Refit blanking plug for cylinder block. Renew seal ring.
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