Hummer H3. Manual — part 250

Fig. 615: Camshaft Actuator
Courtesy of GENERAL MOTORS CORP.

NOTE:

The camshaft actuator must be fully advanced during
installation. Engine damage may occur if the camshaft actuator
is not fully advanced.

IMPORTANT: Rotate the camshaft actuator clockwise relative to the

camshaft prior to tightening the bolt.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

13. Install the new exhaust camshaft actuator bolt.

Tighten:

Tighten the new exhaust camshaft actuator bolt the first pass to 25 N.m (18 lb ft).

Use J 45059 to tighten the exhaust camshaft actuator bolt the final pass an additional
135 degrees. See Special Tools.

14. Unlock the tensioner.

15. Remove J 44221 . See Special Tools.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

Fig. 616: Chain Alignment Links
Courtesy of GENERAL MOTORS CORP.

16. The dark links (1) on the chain should be aligned with marks on sprockets as shown.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

Fig. 617: Top Chain Guide
Courtesy of GENERAL MOTORS CORP.

17. Install the top chain guide.

18. Add threadlock GM P/N United States 89021297, GM P/N Canada 10953488 to the top

chain guide bolt threads.

19. Install the top chain guide bolts.

Tighten: Tighten the top chain guide bolts to 10 N.m (89 lb in).

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3