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SECTION 10
INSPECTION AND RECONDITIONING
Under
Valve Seat Insert
oo
Cut
1.380
Й
i.
031
Min.
Margin
1.125" —M18
Face
1.390" —M20
Valve Guide
Depth
Normal: Even after long hours of operation a valve can be recon-
Bad Condition: The valve depicted here should be replaced.
ditioned and reused if the face and margin are in good shape. Ifa
Note the warped head; margin damaged and too narrow. These
valve is worn to where the margin is less than 1/32" do not reuse it.
conditions could be attributed to excessive hours or a combination
The valve shown was in operation for almost 1000 hours under
ої poor operating conditions.
controlled test conditions.
10.5
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