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How to Replace timing chain on Audi R8 4.2 2009

Audi R8 4.2 2009 cambelt change instructions and replacement inteval. Full guide!

Special tools

  • Camshaft adjuster holding tool – No.T40079.
  • Camshaft locking tool x 2 – No.T40070.
  • Crankshaft locking pin – No.3242.
  • Crankshaft alignment tool – No.T40146.
  • Timing chain tensioner locking pin – No.T40071.
  • Torque wrench – No.VAG 1332.
  • Torque wrench adapter – No.VAG 1332/9.

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:
    • Removal of engine and transmission.
  • Flywheel removal.

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

  • Engine at TDC No.1 cylinder [1] .
  • Ensure camshafts correctly aligned [2] . Threaded holes in camshafts point upwards.
  • Fit camshaft locking tools [3] . Tighten to 25 Nm.
  • If camshaft locking tool cannot be fitted valve timing is incorrect.
  • Remove blanking plug from upper sump.
  • Fit crankshaft locking pin [4] . Tightening torque: 20 Nm.
  • 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 LH cylinder head camshaft adjuster 1 turn [8] .

NOTE: Mark chain link and camshaft adjusters with paint before removal.

  • Align camshafts.
  • Fit camshaft locking tool to LH cylinder bank [3] .
  • Fit camshaft locking tool bolts. Tighten to 25 Nm.
  • Pre-tension chain using camshaft adjuster pre-tensioning tools [9] .
  • Tighten bolt of each LH camshaft adjuster in two stages:
  • Tighten LH inlet camshaft adjuster bolt to stage A: 60 Nm.
  • Maintain pre-tension on LH inlet camshaft adjuster [9] .
  • Tighten LH exhaust camshaft adjuster bolt to stage A: 60 Nm.
  • Remove camshaft adjuster pre-tensioning tools [9] .
  • Tighten bolt of each LH camshaft adjuster to stage B: 80 Nm + 90°.
  • Repeat valve timing procedure for RH cylinder bank.
  • Remove timing chain tensioner locking pins after repairs [7] .

NOTE: Central bolt of camshaft adjusters MUST only be used once.

  • Remove crankshaft locking pin and camshaft locking tool [4] & [3] .
  • Turn crankshaft 2 turns clockwise to TDC on No.1 cylinder [1] .
  • Fit crankshaft locking pin [4] .
  • Check valve timing.
  • Remove crankshaft locking pin [4] .
  • Refit blanking plug for upper sump.

NOTE: If timing chains are to be reused, mark LH and RH chains before removal to ensure they are refitted in their original positions.

How to Replace timing belt on Audi R8 4.2 2009
How to Replace timing belt on Audi R8 4.2 2009
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