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How to Replace timing chains on Jaguar XF 4.2 SV8 2008-2009

Special tools

  • Camshafts setting/locking tool – No.303-530.
  • Crankshaft positioning tool – No.303-645.
  • Crankshaft pulley locking tool – No.303-191.
  • Crankshaft pulley locking tool adapter – No.303-191/02.
  • Crankshaft pulley removal tool – No.303-588.
  • Timing chain tensioning tool – No.303-532.

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

How to Replace timing chains on Jaguar XF 4.2 SV8 2008-2009
NOTE: Do not use crankshaft positioning tool to remove/install crankshaft pulley.

  • Remove crankshaft position (CKP) sensor.
  • Turn the crankshaft to align slot for crankshaft positioning tool.
  • Fit crankshaft positioning tool [1] .
  • Ensure that flats on camshafts are positioned upwards. If not, remove crankshaft positioning tool and turn crankshaft pulley 360°.
  • Remove housings of camshaft adjuster control valves [2] .
  • Fit camshafts setting/locking tool to RH cylinder head [3] .
  • Remove RH timing chain tensioner, rail and guide [4] , [5] & [6] .
  • Remove RH timing chain.
  • Remove RH exhaust camshaft sprocket bolt [7] .
  • Remove RH inlet camshaft sprocket bolt [8] .
  • Remove RH camshaft coupling chain tensioner [9] .
  • Remove RH camshaft coupling chain and sprockets.
  • Fit camshafts setting/locking tool to LH cylinder head [3] .
  • Remove LH timing chain tensioner, rail and guide [10] , [11] & [12] .
  • Remove LH timing chain.
  • Remove LH exhaust camshaft sprocket bolt [13] .
  • Remove LH inlet camshaft sprocket bolt [14] .
  • Remove LH camshaft coupling chain tensioner [9] .
  • Remove LH camshaft coupling chain and sprockets.

Installation

  • Ensure crankshaft positioning tool is installed [1] .
  • Ensure LH camshafts setting/locking tool is installed [3] .
  • Fit LH camshaft coupling chain tensioner [9] . Use new bolts.
  • Fit LH camshaft coupling chain and sprockets. Do not tighten bolts.
  • Fit LH timing chain, tensioner rail and guide [11] & [12] .

NOTE: Ensure timing chain is taut between sprockets on non-tensioned side.

  • Reset chain tensioners [4] & [10] :
      • Release tensioner ratchet [15] .
      • Compress tensioner plunger [16] .
      • Retain in position with 3 mm pin [17] .
  • Install LH tensioner [10] .
  • Remove locking pin [17] .
  • Using the timing chain tensioning tool, tension the LH exhaust sprocket anti-clockwise [18] .
  • To prevent engine damage, the inlet camshaft sprocket bolt MUST be tightened before the exhaust camshaft sprocket bolt.
  • Tighten LH inlet camshaft sprocket bolt to 20 Nm + 90° [14] .
  • Tighten LH exhaust camshaft sprocket bolt to 20 Nm + 90° [13] .

NOTE: Camshaft sprocket bolts MUST only be used once.

  • Ensure RH camshafts setting/locking tool is installed [3] .
  • Fit RH camshaft coupling chain tensioner [9] . Use new bolts.
  • Fit RH camshaft coupling chain and sprockets. Do not tighten bolts.
  • Fit RH timing chain, tensioner rail and guide [5] & [6] .
  • Install RH tensioner [4] .
  • Remove locking pin [17] .

NOTE: Ensure timing chain is taut between sprockets on non-tensioned side.

  • Using the timing chain tensioning tool, tension the RH exhaust sprocket anti-clockwise [18] .
  • To prevent engine damage, the inlet camshaft sprocket bolt MUST be tightened before the exhaust camshaft sprocket bolt.
  • Tighten RH inlet camshaft sprocket bolt to 20 Nm + 90° [8] .
  • Tighten RH exhaust camshaft sprocket bolt to 20 Nm + 90° [7] .

NOTE: Camshaft sprocket bolts MUST only be used once.

  • Remove LH and RH camshafts setting/locking tools [3] .
  • Remove crankshaft positioning tool [1] .
  • Fit housings of camshaft adjuster control valves [2] .
  • Fit crankshaft pulley. Use new bolt. Tightening torque: 380 Nm.

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