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How to replace timing chains on Jaguar S-Type 4.2 V8 32V 2001-2008

Special tools

  • Camshafts setting/locking tool – Jaguar No.303-530.
  • Timing chain tensioning tool – Jaguar No.303-532.
  • Crankshaft positioning tool – Jaguar No.303-645.
  • Primary chain wedges – Jaguar No.303-533.
  • Crankshaft pulley locking tool – Jaguar No.303-191.
  • Crankshaft pulley remover – Jaguar No.303-588.
  • Crankshaft pulley locking tool adapter – Jaguar No.303-191-02.

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

How to replace timing chains on Jaguar S-Type 4.2 V8 32V 2001-2008
How to replace timing chains on Jaguar S-Type 4.2 V8 32V 2001-2008

Removal

  • WARNING: Do not use crankshaft positioning tool to remove/install crankshaft pulley.
  • Remove crankshaft position (CKP) sensor from torque converter housing.
  • Turn the crankshaft to align slot for crankshaft positioning tool [1] .
  • Ensure that flats on RH camshafts are positioned upwards, if not turn crankshaft 360°.
  • Fit crankshaft positioning tool [1] .NOTE: Ensure that the positioning tool engages with the slot in the trigger-ring.
  • If fitted: Remove camshaft position actuators and carriers from cylinder heads [2] & [3] .
  • Fit RH camshafts setting/locking tool [4] .
  • Remove RH timing chain tensioner, rail and guide [5] , [6] & [7] .
  • Remove RH timing chain.
  • Remove RH camshaft coupling chain tensioner [8] .
  • Slacken RH exhaust camshaft sprocket bolt [9] .
  • Slacken RH intake camshaft sprocket bolt [10] .
  • Remove RH camshaft coupling chain and sprockets.
  • Remove RH camshafts setting/locking tool [4] .
  • Fit LH camshafts setting/locking tool [4] .
  • Remove LH timing chain tensioner, rail and guide [11] , [12] & [13] .
  • Remove LH timing chain.
  • Remove LH camshaft coupling chain tensioner [8] .
  • Slacken LH exhaust camshaft sprocket bolt [14] .
  • Slacken LH intake camshaft sprocket bolt [15] .
  • Remove LH camshaft coupling chain and sprockets.

Installation

  • WARNING: Ensure that crankshaft sprockets are installed correctly .
  • Ensure crankshaft positioning tool is installed [1] .
  • Ensure LH camshafts setting/locking tool is installed [4] .
  • Fit LH camshaft coupling chain tensioner [8] .
  • Fit LH camshaft coupling chain and sprockets. Do not tighten bolts.
  • Fit LH timing chain, tensioner rail and guide [12] & [13] .
  • Reset chain tensioners:
      • Release tensioner ratchet [17] .
      • Compress tensioner plunger [18] .
      • Retain in position with wire clip [19] .
  • Install tensioner [11] .
  • Remove wire clip [19] .
  • Hold timing chain tensioning tool. Tension LH exhaust camshaft sprocket anti-clockwise [20] .
  • Tighten LH exhaust camshaft sprocket bolt [14] :
      • XKR/XK8: (A) – 70 Nm + 90°.
      • S-Type/XJR/XJ8: (B) – 120 Nm.
  • Tighten LH intake camshaft sprocket bolt [15] :
      • XKR/XK8: (A) – 70 Nm + 90°.
      • S-Type/XJR/XJ8: (B) – 120 Nm.
  • Ensure RH camshafts setting/locking tool is installed [4] .
  • Fit RH camshaft coupling chain tensioner [8] .
  • Fit RH camshaft coupling chain and sprockets. Do not tighten bolts.
  • Fit RH timing chain, tensioner rail and guide [6] & [7] .
  • Install tensioner [5] .
  • Remove wire clip [19] .
  • Hold timing chain tensioning tool. Tension RH exhaust camshaft sprocket anti-clockwise [20] .
  • Tighten RH exhaust camshaft sprocket bolt [9] :
      • XKR/XK8: (A) – 70 Nm + 90°.
      • S-Type/XJR/XJ8: (B) – 120 Nm.
  • Tighten RH intake camshaft sprocket bolt [10] :
      • XKR/XK8: (A) – 70 Nm + 90°.
      • S-Type/XJR/XJ8: (B) – 120 Nm.
  • Remove LH and RH camshafts setting/locking tools [4] .
  • If fitted: Fit camshaft position actuators [2] and carriers [3] to cylinder heads.
  • Fit crankshaft pulley. Use new bolt.

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