XJ (X350) V8-4.2L (2005)
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16. Remove the primary timing chain tensioner assembly.
17. Remove the primary timing chain tensioner guide.
18. Remove the primary timing chain.
19. Remove the primary timing chain tensioner guide.
20. CAUTION: Make sure the secondary timing chain and camshaft sprockets are free to rotate.
Loosen the camshaft sprockets.
