K 1500 Yukon Denali AWD V8-6.0L VIN U (2002)
12. Remove the J 38606.
13. Remove the valve spring cap (4).
14. Remove the valve spring (5).
Important: A second design valve stem oil seal and shim may be used on later engines. A separate spring shim is not required with the second design
seal and shim.
15. Remove the valve stem oil seal (6) (first design).
16. Remove the valve spring shim (7) (first design).
17. Remove the valve stem oil seal and shim (2) (second design)
Installation Procedure
1. Clean the cylinder head valve spring seat and/or shim area.
2. Install the valve spring shim (7) (first design).
3. Install the valve stem oil seal and shim (2) (second design). J42078 is not required for installation of the second design seal and shim.
Important: The valve stem oil seal alignment and position on the valve guide is critical.
An improperly installed valve stem oil seal may lead to excessive oil consumption, increased vehicle emissions, or component damage.
4. Install the valve stem oil seal (first design) onto the guide.
4.1.
Lubricate the valve guide and valve stem oil seal with clean engine oil.
4.2.
Install the valve stem oil seal (first design) onto the valve stem. Push the seal down until the seal contacts the valve guide.
