Hummer H3. Manual — part 518

Fig. 107: View Of Valve Rocker Arm Cover & Bolts (Right)
Courtesy of GENERAL MOTORS CORP.

11. Remove the valve rocker arm cover bolts.

12. Remove the valve rocker arm cover.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 108: Rocker Arm Cover Gasket
Courtesy of GENERAL MOTORS CORP.

13. Remove the gasket (1) from the rocker cover.

14. Discard the OLD gasket.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 109: Oil Fill Cap & Oil Fill Tube
Courtesy of GENERAL MOTORS CORP.

15. Remove the oil fill cap from the oil fill tube.

16. Remove the oil fill tube from the rocker cover, if required.

17. Discard the oil fill tube.

Installation Procedure

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 110: Oil Fill Cap & Oil Fill Tube
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

All gasket surfaces should be free of oil or other foreign
material during assembly.

DO NOT reuse the valve rocker arm cover gasket.

The valve rocker arm cover bolt grommets may be
reused.

If the oil fill tube has been removed from the rocker arm
cover, install a NEW fill tube during assembly.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3