
3
Workshop Manual, TPD 1458E, issue 3 - Perkins Confidential: Green
31
400 Series
To lap the contact face of the valve seat
Operation 3-19
Use the valve seat cutter to obtain the correct seat contact width and seat recess on a new cylinder head, use
a valve lapping tool and lapping compound to finish.
H1052
Summary of Contents for 403C-11
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