Vanden Plas L6-4.0L (1990)
21.
Remove the retaining bolts and the camshaft sprocket vernier coupling, Illustration 3, from the intake camshaft, but do not detach the sprocket
from the camshaft flange. The camshaft is free to rotate inside the sprocket with the coupling removed.
22.
Position the camshaft setting tool 18G-1433/A across the camshafts with the positioning tab on the intake camshaft.
23.
Turn the intake camshaft until the tab on the setting tool engages the slot in the camshaft.
24.
With the camshaft in this position, reinstall the sprocket vernier coupling to the intake camshaft. This step will require several attempts to find the
exact alignment of the vernier splines and the bolt holes.
25.
Install the locking tabs and the coupling bolts. Lightly tighten the bolts.
26.
Remove the setting tool and final tighten the camshaft sprocket vernier coupling bolts to 16.2 - 20.6 lb ft (22 - 28 Nm). Bend the lock tabs against
the bolt heads.
27.
Check both the settings of one and a half teeth before and after the arrowed (TDC) tooth edge on the timing ring, Illustration 2. The tab of the
setting gauge should fit in the slot of the camshaft being checked.
28.
Remove the setting tool, the dial indicator gauge, and the lifting eye. Torque camshaft bearing cap bolt to 12.5 - 16.9 lb ft (17 - 23 Nm).
