Hummer H3. Manual — part 312

alignment guide.

Fig. 115: View Of Timing Chain Tensioner Shoe & Bolt
Courtesy of GENERAL MOTORS CORP.

11. Position the timing chain tensioner shoe to the engine.

12. Install the timing chain tensioner shoe bolt.

Tighten: Tighten the timing chain tensioner shoe bolt to 25 N.m (18 lb ft).

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 116: View Of Timing Chain Guide & Bolts
Courtesy of GENERAL MOTORS CORP.

13. Position the lower timing chain guide to the engine.

14. Install the lower timing chain guide bolts.

Tighten: Tighten the lower timing chain guide bolts to 12 N.m (107 lb in).

15. Install both upper cylinder head access hole plugs to the front of the cylinder head.

Tighten: Tighten the plugs to 5 N.m (44 lb in).

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 117: Tightening Intake Camshaft Sprocket Bolt
Courtesy of GENERAL MOTORS CORP.

16. Tighten the new intake camshaft sprocket bolt.

Tighten: Using J 45059 , tighten the intake camshaft sprocket bolt to 20 N. See Special
Tools.m (15 lb ft) plus 100 degrees.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 118: Tightening Exhaust Camshaft Sprocket Bolt
Courtesy of GENERAL MOTORS CORP.

17. Tighten the new exhaust camshaft actuator sprocket bolt.

Tighten: Using J 45059 , tighten the exhaust camshaft actuator sprocket bolt to 25 N. See
Special Tools.m (18 lb ft) plus 135 degrees.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3