Hummer H3. Manual — part 121

Fig. 138: View Of Tee At Timing Chain Tensioner
Courtesy of GENERAL MOTORS CORP.

11. Remove the tee in the timing chain tensioner in order to regain tension on the timing chain.

2006 Hummer H3

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

Fig. 139: View Of J 44221 Installed On Camshafts
Courtesy of GENERAL MOTORS CORP.

12. Remove the J 44221 from the camshafts. See Special Tools.

2006 Hummer H3

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

Fig. 140: View Of Timing Chain Marked Links
Courtesy of GENERAL MOTORS CORP.

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

shown.

2006 Hummer H3

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

14. Install the engine front cover. Refer to Engine Front Cover Replacement.

15. Install the intake CMP sensor. Refer to Camshaft Position (CMP) Sensor Replacement-

Intake in Engine Controls - 3.5L (L52).

16. Install the exhaust CMP sensor. Refer to Camshaft Position (CMP) Sensor

Replacement-Exhaust in Engine Controls - 3.5L (L52).

17. Install the camshaft cover. Refer to Camshaft Cover Replacement.

18. Install #1 cylinder spark plug. Refer to Spark Plug Replacement in Engine Controls -

3.5L (L52).

TIMING CHAIN TENSIONER REPLACEMENT

Tools Required

J 44221 Camshaft Holding Tool. See Special Tools.

Removal Procedure

1. Remove the camshaft cover. Refer to Camshaft Cover Replacement.

2. Remove the engine front cover. Refer to Engine Front Cover Replacement.

2006 Hummer H3

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