S-Type (X200) V8-4.2L (2005)
19. CAUTION: 0While applying the opposing force to sprocket and chain, tighten the sprocket bolt.
Using the special tool apply force to the tool in an anti-clockwise direction to tension the primary timing chain on its drive side.
^
Tighten to 120 Nm.
20. Remove the special tool from the Right-hand cylinder head.
21. Remove the special tool from the left-hand cylinder head.
Vehicles without supercharger
22. Install the right-hand variable camshaft timing oil control unit housing.