Chevrolet Silverado / GMC Sierra. Manual — part 162

Fig. 541: Identifying Valve Components
Courtesy of GENERAL MOTORS CORP.

2. Remove the valve stem keys (1).

3. Remove the J 8062 from the cylinder head. See Special Tools.

4. Remove the valve spring cap (2).

5. Remove the valve spring (3).

6. Remove the valve stem oil seal (4).

7. Discard the valve stem oil seal.

8. Remove the valve.

CYLINDER HEAD CLEANING AND INSPECTION

Tools Required

J 8001 Dial Indicator Set

J 8089 Carbon Removing Brush

J 9666 Valve Spring Tester. See Special Tools.

Cleaning and Inspection

IMPORTANT: Mark, sort, and organize the components so that the

components can be reinstalled in their original location and
position.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 542: Identifying Valve Components
Courtesy of GENERAL MOTORS CORP.

1. Clean the valve stems and cylinder heads on a buffing wheel.

2. Clean the following components in cleaning solvent:

CAUTION: Refer to SAFETY GLASSES CAUTION .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Valve stem keys (1)

Valve spring cap (2)

Valve spring (3)

Cylinder head

3. Dry the components with compressed air.

Fig. 543: Removing Carbon From Combustion Chambers
Courtesy of GENERAL MOTORS CORP.

4. Use the J 8089 to clean the carbon from the cylinder head combustion chambers.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado