G6 L4-2.4L (2007)
21. Install the upper timing chain guide and bolts.
Tighten the bolts to 10 N.m (89 lb in).
22. Install a 24 mm wrench onto the hex on the intake camshaft. Using a torque wrench, tighten the camshaft actuator bolt.
Tighten the bolt to 85 N.m (63 lb ft), plus 30 degrees using the J 45059 .
23. Install a 24 mm wrench onto the hex on the exhaust camshaft. Using a torque wrench, tighten the camshaft actuator bolt.
Tighten the bolt to 85 N.m (63 lb ft), plus 30 degrees J 45059 .
24. Remove the old oil from the timing chain tensioner.
25. Inspect the timing chain tensioner. If the timing tensioner, O-ring seal, or washer is damaged, replace the timing chain tensioner.
26. Measure the timing chain tensioner assembly from end to end. A new tensioner should be supplied in the fully compressed non-active state. A
tensioner in the compressed state will measure 72 mm (2.83 in) (a) from end to end. A tensioner in the active state will measure 85 mm (3.35 in)
(a) from end to end.