XJR (X308) V8-4.0L SC (AJ26) (1998)
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17. Remove the primary chain tensioner blade.
Remove the pivot bolt which secures the tensioner blade.
Remove the tensioner blade.
18. Reposition the VVT unit along the cam journal to allow the chain to clear the head casting.
Disconnect the primary chain from the VVT unit and reposition it against the crankshaft sprocket.
19. Remove the VVT unit.
Remove the securing bolt from the VVT unit and the exhaust cam sprocket.
Remove the VVT unit, exhaust sprocket and secondary chain as an assembly (release the chain from the tensioner which is still secured to the
cylinder head).
Remove the secondary chain from the VVT unit and the sprocket.
20. Clean and inspect all relevant components.
Installation
1. Push the tensioner piston (secondary chain) into the body to provide clearance for installing.
Insert a thin rigid wire through the hole in the end of the tensioner piston to displace the ball from the non-return valve seat.
With the wire in position, press the piston fully into the tensioner body.
Remove the wire.