Hummer H3. Manual — part 104

Fig. 80: View Of Valve Springs & Retainers
Courtesy of GENERAL MOTORS CORP.

14. Remove the valve spring retainer and valve spring.

2006 Hummer H3

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

Fig. 81: Removing Valve Stem Seals
Courtesy of GENERAL MOTORS CORP.

15. Use the J 38820 in order to grip the seal. See Special Tools. Remove the seal by exerting a

twisting, pulling motion.

Discard the old valve stem seal.

16. Inspect and measure the valve spring. Refer to Cylinder Head Cleaning and Inspection.

Installation Procedure

2006 Hummer H3

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

Fig. 82: Removing Valve Stem Seals
Courtesy of GENERAL MOTORS CORP.

1. Lubricate the valve stem and inner diameter of the new seal with clean engine oil.

2. Using a twisting, pushing motion install the NEW valve stem seal using the J 38820 . See

Special Tools.

IMPORTANT: Install a seal protector over the valve stem prior to installing

the valve stem seal.

2006 Hummer H3

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

Fig. 83: View Of Valve Springs & Retainers
Courtesy of GENERAL MOTORS CORP.

3. Install the valve spring and valve spring retainer.

2006 Hummer H3

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