
29
4)
Check the diameter of value stem
a:
Use micrometer caliper to measure the
diameter of valve stem.
B:
Use inner micrometer guage to measure
the inner diameter of valve guide.
C:
Calculate the difference of measured
value and the clearance.
If they exceed the specified limit values, the
value or guide shall be replaced more
necessarily.
D:
Check the contact bandwidth of valve.
E:
Check the valve seat insert.
Valve
Guide
Outer Diameter
Of Valve Stem
Inner Diameter Of
Valve Guide
Measuring Point
Measuring Point
Contact Position (Should Be
At The Center Of Slope.)
Edge
Thickness
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Summary of Contents for A21 2005
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