XJR (X308) V8-4.0L SC (AJ26) (1998)
12. Remove the bolt, which secures the sprocket to the exhaust camshaft.
Move the sprocket forward from the camshaft boss.
13. Remove the secondary chain tensioner.
Remove the two bolts, which secure the tensioner.
Lift the tensioner, sprocket (release it fully from the camshaft) and chain assembly.
Remove the tensioner rearward from between the chain.
14. Remove the sprocket if required, or leave it in the chain resting on the cylinder head.
15. Clean and inspect all relevant components.
Installation
1. Install the sprocket to the secondary chain.