Hummer H3. Manual — part 310

Fig. 108: View Of Cylinder Head
Courtesy of GENERAL MOTORS CORP.

60. Remove the cylinder head.

61. Place the cylinder head on a flat, clean surface with the combustion chambers face up, in

order to prevent damage to the deck face.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 109: View Of Cylinder Head Gasket
Courtesy of GENERAL MOTORS CORP.

62. Remove the cylinder head gasket.

Discard the gasket.

63. Remove all remaining gasket material from the engine block.

64. Inspect the cylinder head gasket mating surface on the engine block.

65. Clean and inspect the cylinder head. Refer to Cylinder Head Cleaning and Inspection.

66. Disassemble the cylinder head if necessary. Refer to Cylinder Head Disassemble.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Installation Procedure

1. Assemble the cylinder head if necessary. Refer to Cylinder Head Assemble.

Fig. 110: View Of Cylinder Head Gasket
Courtesy of GENERAL MOTORS CORP.

2. Install the dowel pins, cylinder head locator, if necessary.

3. Position a NEW cylinder head gasket to the engine block.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 111: View Of Cylinder Head
Courtesy of GENERAL MOTORS CORP.

4. Install the cylinder head.

IMPORTANT: Ensure all wires, components, etc. are out of the way when

installing the cylinder head.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3