Start: a. Remove the intake and exhaust valves. See Disassembly and Assembly, "Intake and Exhaust Valves - Removal and Installation".
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Note: Valve guides and valve seats must be removed by a properly trained professional. Specialized machinery is also required. For more information,
Note: Keep all parts clean and free of contaminants. Contaminants cause rapid wear and shorten component life.
Use appropriate presses and tools (A) to remove the valve guide (2) (not shown) from the cylinder head (1).
2. Repeat step 1 for the remaining valve guides.
Note: Valve guides and valve seats must be removed by a properly trained professional. Specialized
machinery is also required. For more information,
Note: Keep all parts clean and free of contaminants. Contaminants cause rapid wear and shorten
component life. 1. Clean the valve guide bore in the cylinder head.
2. Lubricate the new valve guide (2) with clean engine oil. Position the valve guide (2) in place on the cylinder head (1).
Carefully tap the valve guide to begin installation.
3. Use appropriate presses and tools (A) to install the valve guide into the cylinder head.
4. Repeat steps 2 through 3 for the remaining valve guides.
5. Check the protrusion (X) of the valve guide (2). The valve guide should protrude 12.7 mm (0.500 in) above the valve spring recess.
For more information, see the technical specifications, "Cylinder Head Valves".
6. After installing the valve guide (2), the valve guide must be enlarged, and the valve seat insert must be cut to the finishing diameter. Follow steps 6.a through 6.d to ream the large valve guide and cut the valve seat insert.
a. Lubricate the bore of the valve guide (2) with clean engine oil.
b. Ream the large valve guide using tool (B). Ensure even pressure is applied to tool (B).
c. Cut the valve seat using tool (B). Ensure even pressure is applied to tool (B).
d. Ensure the cylinder head is clean and free of machining debris.
7. Check the finishing diameter of the valve guide (2). For more information, see Technical Specifications, "Cylinder Head - Valve".
8. Check the depth of the valve below the cylinder head surface. For more information, see System Operation, Testing and Adjustment, "Valve Depth - Check".
End:
a. Install the intake and exhaust valves. See Disassembly and Assembly, "Intake and Exhaust Valves - Removal and Installation".
