5. Inspection and servicing of basic engine parts
183
(2) Knead valve compound with oil and
finish the valve seat with a lapping tool.
(3) Final finishing should be done with oil
only.
Lapping tool
Use a rubber cap type lapping tool for
cylinders without a lapping tool groove with oil
only.
Note:
Clean the valve and cylinder head with light
oil or the equivalent after valve seat finishing
is completed and make sure that there are
no grindings remaining.
Note:
1) Insert adjusting shims between the valve
spring and cylinder head when seats
have been refinishing with a seat grinder.
2) Measure valve distortion after valve seat
refinishing has been completed, and
replace the valve and valve seat if it
exceeds the tolerance.
001412-00X
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