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How to replace timing chains on Jaguar S-Type 3.0 24V 1998-2008

Special tools

  • Crankshaft vibration damper holder/wrench strap – Jaguar No.303-D055.
  • Crankshaft vibration damper remover – Jaguar No.303-D121.
  • Crankshaft vibration damper installer – Jaguar No.303-102.

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 3.0 24V 1998-2008
How to replace timing chains on Jaguar S-Type 3.0 24V 1998-2008

Removal

  • Removal/installation of timing chain(s) requires:
      • Front crossmember removal.
      • Sump removal.
  • Engine at TDC on No.1 cylinder with marked links and timing marks aligned [1] , [2] , [3] , [4] & [5] .
  • Remove RH tensioner [6] , RH tensioner blade and RH chain guide [7] & [8] and RH chain.
  • Remove LH tensioner [9] , LH tensioner blade and LH chain guide [10] & [11] and LH chain.
  • Remove crankshaft sprockets.

Installation

  • Engine at TDC on No.1 cylinder.
  • Ensure crankshaft sprocket keyway at 11 o’clock position [12] .
  • Set timing chain tensioners:
      • Release tensioner ratchet [13] .
      • Compress tensioner plunger [14] .
      • Retain in position with wire clip [15] .
  • Install crankshaft sprockets.
  • Ensure timing marks of both LH camshaft sprockets aligned [16] .
  • Install LH chain guide [11] .
  • Install LH chain ensuring marked links aligned [1] , [4] & [5] .
  • Install LH tensioner blade [10] .
  • Install LH tensioner [9] .
      • Remove wire clip [15] .
  • Ensure timing marks of both RH camshaft sprockets aligned [17] .
  • Install RH chain guide [8] .
  • Install RH chain ensuring marked links aligned [1] , [2] & [3] .
  • Install RH tensioner blade [7] .
  • Install RH tensioner [6] .
      • Remove wire clip [15] .
  • Seal crankshaft pulley keyway with a proprietary sealant.
  • Tighten crankshaft pulley bolt to 120 Nm slacken 360°. Tighten to 50 Nm + 90° [18] .

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