Content .. 1972 1973 1974 1975 ..
Chevrolet Silverado / GMC Sierra. Manual - part 1974
15. Remove the valve stem oil seal (222).
16. Remove the valve (228).
Installation Procedure
Fig. 270: Valve Stem Keys, Valve Spring Cap & Valve Spring
Courtesy of GENERAL MOTORS CORP.
1. Clean the cylinder head valve spring seat area.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
2. Lubricate the valve guide and valve stem oil seal with clean engine oil.
3. Install the valves (228) into the proper port.
4. Install the valve stem oil seal (222).
5. Install the valve spring (223).
6. Install the valve spring cap (224).
Fig. 271: Compressing Valve Spring (Cylinder Head Installed) Using Special Tools
Courtesy of GENERAL MOTORS CORP.
7. Compress the valve spring using the J 38606 .
8. Install the valve keys.
Use grease in order to hold the valve keys in place.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Make sure the keys seat properly in the groove of the valve stem.
Carefully release the valve spring pressure, making sure the valve keys stay in place.
Remove the J 38606 .
Tap the end of the valve stem with a plastic faced hammer to seat the keys, if
necessary.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 272: View Of J 22794
Courtesy of GENERAL MOTORS CORP.
9. Remove the J 22794 from the spark plug port.
Fig. 273: View Of Spark Plug And Sparkplug Seat
Courtesy of GENERAL MOTORS CORP.
10. Hand start the spark plug.
Tighten: Tighten the spark plug to 15 N.m (11 lb ft).
11. Install the spark plug wires at the ignition coil.
12. Install the spark plug wire to the spark plug.
13. Inspect the wires for proper installation:
Push sideways on each boot in order to check for proper installation.
Reinstall any loose boot.
14. Install the rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement.
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Content .. 1972 1973 1974 1975 ..