XK-8 Coupe (X100) V8-4.0L (AJ26) (1998)
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16. Remove the primary chain tensioner blade.
Remove the pivot bolt which secures the tensioner blade.
Remove the tensioner blade.
17. Disconnect the primary chain from the VVT unit and the crankshaft sprocket, and remove it completely.
18. Do not tamper with the three bolts which secure the VVT mechanism to the sprockets. It is sealed at the factory to the correct valve timing
specification for the engine and is supplied only as a complete unit.
19. Remove the VVT unit.
Remove the securing bolt from both 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.
