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MMD > Archives > January 2002 > 2002.01.28 > 06Prev  Next

Old Style Inverted Ampico Unit Valves
By Bruce Clark

Help!  I am trying to help a friend restore an early Ampico.  The
problem is in the old style inverted unit valves.  I have little
experience with this style of unit valve.

The bottom seats are wood, the inverted tops are wood with a metal
ring, glued on with paper shims. The valves have been replaced and
correctly re-gapped. The new pouches are dished properly.  Still, many
of the valves are leaking when the vacuum is directed to the pneumatic

Can anyone help us with this problem?

Bruce Clark

(Message sent Mon 28 Jan 2002, 13:38:28 GMT, from time zone GMT-0500.)

Key Words in Subject:  Ampico, Inverted, Old, Style, Unit, Valves

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