Lapping notes
When lapping any component, if the sealing surface
cannot easily be restored by the lapping techniques de
-
scribed in this section, you can machine it flat before
lapping as long as you machine only the sealing surface,
maintain the perpendicularity of the face to the compo
-
nent axis, and maintain these minimum dimensions:
•
Shoulder of the check valve body: minimum height
of 0.475 in. (12.06 mm)
•
Check valve inlet poppet: minimum thickness of the
large diameter portion 0.115 in. (2.921 mm)
•
If the check valve body retaining screw does not seat
correctly, the part is at the end of its service life and
must be replaced.
32 | M-376 © Flow International Corporation
94K HYPERPRESSURE INTENSIFIER
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